Accounts Payable Current Accounts payable Accounts Receivable Net Current Accounts receivable, net Accrued Liabilities Current Other accrued liabilities Accumulated Depreciation Depletion And Amortization Property Plant And Equipment Less: accumulated depreciation and amortization Accumulated Other Comprehensive Income Loss Net Of Tax Accumulated other comprehensive loss Accumulated Other Comprehensive Income [Member] Accumulated Other Comprehensive Loss Acquired Finite Lived Intangible Assets Weighted Average Useful Life Acquired identifiable intangible assets weighted average useful life in years Additional Paid In Capital Common Stock Paid-in-capital Additional Paid In Capital [Member] Paid-in- Capital Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value Share-based compensation Adjustments To Additional Paid In Capital Tax Effect From Share Based Compensation Tax effect from share-based payment arrangements Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities [Abstract] Adjustments to reconcile net income to net cash provided by operating activities: Amendment Flag Amendment Flag Amortization Of Intangible Assets Amortization of intangible assets Unallocated amortization expense Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount Options to purchase shares of common stock excluded in the computation of diluted earnings per share because their inclusion would be antidilutive, shares Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Applicable Margin Rate Applicable Margin Rate Revolving credit facility, federal funds rate Applications [Member] Applications [Member] Applications Assets Total assets Assets [Abstract] Assets Assets Current Total current assets Assets Current [Abstract] Current assets: Assets Fair Value Disclosure Total Assets Fair Value Disclosure [Abstract] Assets: Available For Sale Securities Current Marketable securities available for sale, current portion Available For Sale Securities Fair Value Disclosure Marketable securities available-for-sale Available For Sale Securities Noncurrent Marketable securities available for sale, less current portion Balance Sheet Location [Axis] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Disclosure for the basis of accounting, or basis of presentation, used to prepare the financial statements, as well as disclosure of accounting policy regarding the principles it follows in consolidating or combining the separate financial statements, and the accounting treatment for intercompany accounts and transactions. Basis Of Presentation And Principles Of Consolidation Policy [Text Block] Principles of Consolidation and Basis of Presentation Business Acquisition Cost Of Acquired Entity Cash Paid Cash Business Acquisition Cost Of Acquired Entity Purchase Price Business Acquisition, Cost of Acquired Entity, Purchase Price Business Acquisition, Cost of Acquired Entity, Purchase Price, Total Business Acquisition Cost Of Acquired Entity Transaction Costs Acquisition-related costs (included in the company's condensed consolidated statement of income for the quarter ended June 30, 2012 as a component of selling, general, and administrative expense) Business Acquisition [Line Items] Business Acquisition [Line Items] Business Acquisition Percentage Of Voting Interests Acquired Common stock acquired Business Acquisition Purchase Price Allocation Amortizable Intangible Assets Intangible assets Business Acquisition Purchase Price Allocation Assets Acquired Liabilities Assumed Net Total identifiable net assets Business Acquisition Purchase Price Allocation Current Assets Cash And Cash Equivalents Cash and cash equivalents Business Acquisition Purchase Price Allocation Current Assets Prepaid Expense And Other Assets Prepaid expenses and other current assets Business Acquisition Purchase Price Allocation Current Assets Receivables Accounts receivable, net Business Acquisition Purchase Price Allocation Current Liabilities Accounts Payable Accounts payable Business Acquisition Purchase Price Allocation Current Liabilities Accrued Liabilities Other accrued expenses Business Acquisition Purchase Price Allocation Current Liabilities Deferred Revenue Deferred revenue Business Acquisition Purchase Price Allocation Deferred Tax Assets Noncurrent Deferred income taxes Business Acquisition Purchase Price Allocation Goodwill Amount Goodwill Business Acquisition Purchase Price Allocation Other Assets Other assets Business Acquisition, Purchase Price Allocation, Other Intangible Assets [Abstract] Business Acquisition Purchase Price Allocation Other Intangible Assets [Abstract] Intangible assets Business Acquisition Purchase Price Allocation Property Plant And Equipment Property and equipment, net Business Combination Disclosure [Text Block] Acquisitions Cash Cash deposits Cash And Cash Equivalents At Carrying Value Cash and cash equivalents, end of year Cash and cash equivalents, beginning of year Cash and cash equivalents Cash And Cash Equivalents Fair Value Disclosure Cash equivalents Cash And Cash Equivalents Period Increase Decrease Increase in cash and cash equivalents Cash Equivalents [Member] Cash equivalents Cash [Member] Cash Commercial Paper [Member] U.S. commercial paper Commitments And Contingencies Commitments and contingencies Common Stock Dividends Per Share Cash Paid Dividends paid, per share Common Stock [Member] Common Stock Common Stock Par Or Stated Value Per Share Common stock, par value Common Stock Shares Authorized Common stock, shares authorized Common Stock 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currency Derivative Instruments Not Designated As Hedging Instruments Liability At Fair Value Derivative liabilities not designated as hedging instruments Derivative [Line Items] Derivative [Line Items] Derivative [Table] Derivative [Table] Developed Technology Rights [Member] Completed technology Disclosure - Acquisitions - Additional Information [Abstract] Disclosure Acquisitions Additional Information [Abstract] Disclosure - Acquisitions - Additional Information [Abstract] Disclosure - Amortization Expense Associated with Intangible Assets [Abstract] Disclosure Amortization Expense Associated With Intangible Assets [Abstract] Disclosure - Amortization Expense Associated with Intangible Assets [Abstract] Disclosure - Consideration Paid and Amounts of Assets Acquired and Liabilities Assumed [Abstract] Disclosure Consideration Paid And Amounts Of Assets Acquired And Liabilities Assumed [Abstract] Disclosure - Consideration Paid and Amounts of Assets Acquired and Liabilities Assumed [Abstract] Disclosure - Derivative Financial Instruments - Additional Information [Abstract] Disclosure Derivative Financial Instruments Additional Information [Abstract] Disclosure - Derivative Financial Instruments - Additional Information [Abstract] Disclosure - Earnings Per Share - Additional Information [Abstract] Disclosure Earnings Per Share Additional Information [Abstract] Disclosure - Earnings Per Share - Additional Information [Abstract] Disclosure - Estimated Future Intangible Asset Amortization Expense [Abstract] Disclosure Estimated Future Intangible Asset Amortization Expense [Abstract] Disclosure - Estimated Future Intangible Asset Amortization Expense [Abstract] Disclosure - Financial Assets Measured at Fair Value on a Recurring Basis [Abstract] Disclosure Financial Assets Measured At Fair Value On A Recurring Basis [Abstract] Disclosure - Financial Assets Measured at Fair Value on a Recurring Basis [Abstract] Disclosure - Gains (Losses) on Derivative Financial Instruments Recorded in Consolidated Statements of Income [Abstract] Disclosure Gains Losses On Derivative Financial Instruments Recorded In Consolidated Statements Of Income [Abstract] Disclosure - Gains (Losses) on Derivative Financial Instruments Recorded in Consolidated Statements of Income [Abstract] Disclosure - Goodwill and Intangible Assets - Additional Information [Abstract] Disclosure Goodwill And Intangible Assets Additional Information [Abstract] Disclosure - Goodwill and Intangible Assets - Additional Information [Abstract] Disclosure - Income Taxes - Additional Information [Abstract] Disclosure Income Taxes Additional Information [Abstract] Disclosure - Income Taxes - Additional Information [Abstract] Disclosure - Property and Equipment [Abstract] Disclosure Property And Equipment [Abstract] Disclosure - Property and Equipment [Abstract] Disclosure - Reconciliation of Numerators and Denominators of Basic and Diluted Earnings Per Share [Abstract] Disclosure Reconciliation Of Numerators And Denominators Of Basic And Diluted Earnings Per Share [Abstract] Disclosure - Reconciliation of Numerators and Denominators of Basic and Diluted Earnings Per Share [Abstract] Disclosure - Revolving Line of Credit - Additional Information [Abstract] Disclosure Revolving Line Of Credit Additional Information [Abstract] Disclosure - Revolving Line of Credit - Additional Information [Abstract] Disclosure - Senior Notes - Additional Information [Abstract] Disclosure Senior Notes Additional Information [Abstract] Disclosure - Senior Notes - Additional Information [Abstract] Disclosure - Summary of Changes to Goodwill [Abstract] Disclosure Summary Of Changes To Goodwill [Abstract] Disclosure - Summary of Changes to Goodwill [Abstract] Disclosure - Summary of Fair Value of Derivative Instruments by Consolidated Balance Sheet Location [Abstract] Disclosure Summary Of Fair Value Of Derivative Instruments By Consolidated Balance Sheet Location [Abstract] Disclosure - Summary of Fair Value of Derivative Instruments by Consolidated Balance Sheet Location [Abstract] Disclosure - Summary of Outstanding Forward Foreign Currency Contracts by Currency [Abstract] Disclosure Summary Of Outstanding Forward Foreign Currency Contracts By Currency [Abstract] Disclosure - Summary of Outstanding Forward Foreign Currency Contracts by Currency [Abstract] Disclosure - Summary of Restructuring Accruals and Certain Facility Closures [Abstract] Disclosure Summary Of Restructuring Accruals And Certain Facility Closures [Abstract] Disclosure - Summary of Restructuring Accruals and Certain Facility Closures [Abstract] Disclosure - Summary of Segment Information [Abstract] Disclosure Summary Of Segment Information [Abstract] Disclosure - Summary of Segment Information [Abstract] Dividends Common Stock Cash Dividends paid ($0.02 per share) Document - Document and Entity Information [Abstract] Document Documentand Entity Information [Abstract] Document - Document and Entity Information [Abstract] Document Fiscal Period Focus Document Fiscal Period Focus Document Fiscal Year Focus Document Fiscal Year Focus Document Information [Line Items] Document Information [Line Items] Document Period End Date Document Period End Date Document Type Document Type Domestic Corporate Debt Securities [Member] U.S. corporate debt Earnings Per Share [Abstract] Earnings per share Earnings Per Share Basic Basic Earnings Per Share Basic And Diluted Numerator [Abstract] Earnings Per Share Basic And Diluted Numerator [Abstract] Numerator for diluted and basic earnings per share- Earnings Per Share Diluted Dilluted Diluted Earnings Per Share Disclosure [Line Items] Earnings Per Share Disclosure [Line Items] Earnings Per Share Disclosure [Line Items] Earnings Per Share Disclosure [Table] Earnings Per Share Disclosure [Table] Earnings Per Share Disclosure [Table] Earnings Per Share [Text Block] Earnings Per Share Effective Income Tax Rate Continuing Operations Effective income tax rate Effect Of Exchange Rate On Cash And Cash Equivalents Effect of exchange rate changes on cash Employee Related Liabilities Current Accrued compensation and employee benefits Employee Severance [Member] Employee separation Entities [Table] Entities [Table] Entity Central Index Key Entity Central Index Key Entity Common Stock Shares Outstanding Entity Common Stock, Shares Outstanding Entity [Domain] Entity [Domain] Entity Filer Category Entity Filer Category Entity Registrant Name Entity Registrant Name Equity Component [Domain] Equity Component [Domain] Excess Tax Benefit From Share Based Compensation Financing Activities Excess tax benefits from share-based payment arrangements Excess Tax Benefit From Share Based Compensation Operating Activities Excess tax benefits from share-based payment arrangements Facility Closing [Member] Facilities charges Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring Basis [Table] Fair Value Assets And Liabilities Measured On Recurring Basis [Table] Fair Value, Assets and Liabilities Measured on Recurring Basis [Table] Fair Value Assets Measured On Recurring Basis [Text Block] Fair Value, Assets Measured on Recurring Basis Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation By Asset Class [Domain] Fair Value by Asset Class [Domain] Fair Value By Asset Class [Axis] Asset Class [Axis] Fair Value By Fair Value Hierarchy Level [Axis] Fair Value, Hierarchy [Axis] Fair Value By Measurement Frequency [Axis] Measurement Frequency [Axis] Fair Value Disclosures [Text Block] Fair Value Measurements Fair Value Inputs Level 1 [Member] Active Markets for Identical Instruments (Level 1) Fair Value Inputs Level 2 [Member] Significant Other Observable Inputs (Level 2) Fair Value Measurement Frequency [Domain] Fair Value, Measurement Frequency [Domain] Fair Value Measurements Fair Value Hierarchy [Domain] Fair Value, Measurements, Fair Value Hierarchy [Domain] Fair Value Measurements Recurring [Member] Fair Value, Measurements, Recurring Finite Lived Intangible Assets Amortization Expense Next Twelve Months 2013 Finite Lived Intangible Assets Amortization Expense Remainder Of Fiscal Year Remainder of fiscal 2012 Finite Lived Intangible Assets Amortization Expense Year Four 2016 Finite Lived Intangible Assets Amortization Expense Year Three 2015 Finite Lived Intangible Assets Amortization Expense Year Two 2014 Finite Lived Intangible Assets By Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Finite Lived Intangible Assets Future Amortization Expense [Abstract] Estimated future intangible asset amortization expense Finite Lived Intangible Assets Gross Intangible assets, gross Finite Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Finite Lived Intangible Assets Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite Lived Intangible Assets Net Intangible assets, net Fixed Charge Coverage Ratio, Minimum Fixed Charge Coverage Ratio Minimum Credit facility restrictive covenant, minimum fixed charge ratio Foreign Exchange Contracts To Purchase British Pounds With US Dollars [Member] Foreign Exchange Contracts To Purchase British Pounds With United States Dollars [Member] Foreign Exchange Contracts To Purchase British Pounds With US Dollars Foreign Exchange Contracts To Purchase Currencies Axis Foreign Exchange Contracts To Purchase Currencies [Axis] Foreign Exchange Contracts To Purchase Currencies Axis Foreign Exchange Contracts To Purchase Currencies Domain Foreign Exchange Contracts To Purchase Currencies [Domain] Foreign Exchange Contracts To Purchase Currencies Domain Foreign Exchange Contracts to Sell Canadian Dollar for US Dollar [Member] Foreign Exchange Contracts To Sell Canadian Dollar For United States Dollar [Member] Foreign Exchange Contracts to Sell Canadian Dollar for US Dollar Foreign Exchange Contracts To Sell European Euro For U S dollar [Member] Foreign Exchange Contracts To Sell European Euro For United States Dollar [Member] Foreign Exchange Contracts To Sell European Euro for US Dollar Foreign Exchange Forward [Member] Foreign currency forward contracts Future Amortization Expense, Thereafter Future Amortization Expense Thereafter Thereafter Gain Loss On Derivative Instruments Net Pretax Foreign currency forward contracts Gain Loss On Sale Of Property Plant Equipment Net loss on sales of property and equipment Goodwill Ending Balance Beginning Balance Goodwill Goodwill Acquired During Period Addition from acquisition Goodwill and Intangible Assets Disclosure [Line Items] Goodwill And Intangible Assets Disclosure [Line Items] Goodwill and Intangible Assets Disclosure [Line Items] Goodwill and Intangible Assets Disclosure [Table] Goodwill And Intangible Assets Disclosure [Table] Goodwill and Intangible Assets Disclosure [Table] Goodwill And Intangible Assets Disclosure [Text Block] Goodwill and Intangible Assets Goodwill Translation Adjustments Foreign currency translation adjustment Hedging Designation [Axis] Hedging Designation [Axis] Hedging Designation [Domain] Hedging Designation [Domain] Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments Income before income taxes Income from operations before income taxes Income Statement [Abstract] Income Statement [Abstract] Income Tax Disclosure [Text Block] Income Taxes Income Taxes [Line Items] Income Taxes [Line Items] Income Taxes [Line Items] Income Taxes Paid Net Cash paid for income taxes, net of refunds Income Taxes [Table] Income Taxes [Table] Income Taxes [Table] Income Tax Expense Benefit Provision for income taxes Increase Decrease In Accounts Payable Accounts payable Increase Decrease In Accounts Receivable Accounts receivable Increase Decrease In Deferred Revenue Deferred revenue Increase Decrease In Employee Related Liabilities Accrued compensation and employee benefits Increase Decrease In Operating Capital [Abstract] Changes in operating assets and liabilities: Increase Decrease In Other Operating Liabilities Other liabilities Increase Decrease In Prepaid Deferred Expense And Other Assets Prepaid expenses and other assets Interest Expense Unallocated interest expense Interest expense Interest Paid Cash paid for interest Interim Period Costs Not Allocable [Domain] Interim Period, Costs Not Allocable [Domain] Investment Income Interest Interest income Unallocated interest income Investment Income Net Amortization Of Discount And Premium Net amortization of premium on marketable securities Investments In Affiliates Subsidiaries Associates And Joint Ventures Other investments Legal Entity [Axis] Legal Entity [Axis] Legal Matters And Contingencies [Text Block] Contingencies Leverage Ratio Maximum Leverage Ratio Maximum Credit facility restrictive covenant, maximum consolidated leverage ratio Liabilities Total liabilities Liabilities And Stockholders Equity Total liabilities and stockholders' equity Liabilities And Stockholders Equity [Abstract] Liabilities and Stockholders' Equity Liabilities Current Total current liabilities Liabilities Current [Abstract] Current liabilities: Liabilities Other Than Longterm Debt Noncurrent Other liabilities Licenses Revenue License Line of Credit Facilities [Text Block] Line Of Credit Facilities [Text Block] Revolving Line of Credit Line Of Credit Facility Expiration Date 1 Revolving credit facility, expiration date Line Of Credit Facility Interest Rate Description Revolving credit facility, interest rate description Line Of Credit Facility [Line Items] Line of Credit Facility [Line Items] Line Of Credit Facility Maximum Borrowing Capacity Unsecured revolving line of credit Line Of Credit Facility [Table] Line of Credit Facility [Table] LIBORS Spread Maximum London Interbank Offered Rate Spread Maximum Margin on LIBOR borrowings, maximum LIBORS Spread Minimum London Interbank Offered Rate Spread Minimum Margin on LIBOR borrowings, minimum Long Term Debt, Maturity Long Term Debt Maturity Senior Notes, maturity Long Term Debt [Text Block] Senior Notes Long Term Debt, Weighted Average Maturity Long Term Debt Weighted Average Maturity Senior Notes, weighted average maturity (in years) Marketable securities [Member] Marketable Securities [Member] Marketable securities Maturities Of Senior Debt Payments on Senior Notes Payments on Senior Notes Maximum [Member] Maximum Maximum Remaining Maturity Of Foreign Currency Derivatives 1 Short-term forward contracts, average maturities at inception Percentage of borrowings to total credit facility that if exceeded utilization fees are required to be paid. Minimum Credit Facility Utilization Subject To Utilization Fee Revolving credit facility, utilization fees, percentage of total credit facility commitment to exceed Minimum [Member] Minimum Municipal Bonds [Member] U.S. municipal obligations Nature Of Expense [Axis] Nature of Expense [Axis] Nature of Operations [Policy Text Block] Nature Of Operations Policy [Text Block] Fair Isaac Corporation Net Cash Provided By Used In Financing Activities Net cash used in financing activities Net Cash Provided By Used In Financing Activities [Abstract] Cash flows from financing activities: Net Cash Provided By Used In Investing Activities Net cash provided by (used in) investing activities Net Cash Provided By Used In Investing Activities [Abstract] Cash flows from investing activities: Net Cash Provided By Used In Operating Activities Net cash provided by operating activities Net Cash Provided By Used In Operating Activities [Abstract] Cash flows from operating activities: Net Income Loss Net income Net Income Nondesignated [Member] Not Designated as Hedging Instrument Non United States Commercial Paper [Member] Non United States Commercial Paper [Member] Non-U.S. commercial paper Notional Amount Of Foreign Currency Derivative Purchase Contracts Contract amount of forward foreign currency contracts to buy foreign currency Notional Amount Of Foreign Currency Derivative Sale Contracts Contract amount of forward foreign currency contracts to sell foreign currency Number of Series Number Of Series Number of series of Senior Notes issued Operating Income Loss Operating income Other Assets Noncurrent Other assets Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax Cumulative translation adjustments Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax Unrealized loss on investments Other Current Assets [Member] Other current assets Other Current Liabilities [Member] Other Current Liabilities [Member] Other current liabilities Other Nonoperating Income Expense Other income (expense), net Unallocated other expense, net Payments For Proceeds From Other Investing Activities Distribution from (purchase of) cost method investees Payments For Repurchase Of Common Stock Repurchases of common stock Payments Of Dividends Common Stock Dividends paid Payments To Acquire Available For Sale Securities Purchases of marketable securities Payments To Acquire Businesses Net Of Cash Acquired Cash paid for acquisitions, net of cash acquired Payments To Acquire Property Plant And Equipment Purchases of property and equipment Preferred Stock Par Or Stated Value Per Share Preferred stock, par value Preferred Stock Shares Authorized Preferred stock, shares authorized Preferred Stock Shares Issued Preferred stock, issued Preferred Stock Shares Outstanding Preferred stock, outstanding Preferred Stock Value Outstanding Preferred stock ($0.01 par value; 1,000 shares authorized; none issued and outstanding) Prepaid Expense And Other Assets Current Prepaid expenses and other current assets Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities Proceeds from maturities of marketable securities Proceeds from (Payments for) Issuance of Shares under Incentive and Share Based Compensation Plans, Including Stock Options Proceeds From Payments For Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options Proceeds from issuances of common stock under employee stock option and purchase plans Proceeds From Sale And Maturity Of Marketable Securities Proceeds from sales of marketable securities Property Plant And Equipment Gross Property and equipment Property Plant And Equipment [Line Items] Property, Plant and Equipment [Line Items] Property Plant And Equipment Net Property and equipment, net Property and equipment, net Property Plant And Equipment [Text Block] Property, Plant and Equipment Provision For Reduction Of Doubtful Accounts Provision For Reduction Of Doubtful Accounts Benefit from provision for doubtful accounts, net Range [Axis] Range [Axis] Range [Member] Range [Domain] Research And Development Expense Research and development Restructuring And Related Activities Disclosure [Text Block] Restructuring Expenses Restructuring Charges Restructuring Unallocated restructuring expense Expense Additions Restructuring Cost And Reserve [Axis] Restructuring Type [Axis] Restructuring Cost And Reserve [Line Items] Restructuring Cost and Reserve [Line Items] Restructuring Reserve Ending balance Beginning balance Restructuring Reserve Current Less: current portion Restructuring Reserve Noncurrent Non-current Restructuring Reserve Settled With Cash Cash Payments Retained Earnings Accumulated Deficit Retained earnings Retained Earnings [Member] Retained Earnings Sales Revenue Net Total segment revenues Total revenues Sales Revenue Net [Abstract] Revenues: Schedule of Amortization Expense [Table Text Block] Schedule Of Amortization Expense [Text Block] Schedule of Amortization Expense Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule Of Business Acquisitions By Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Schedule Of Derivative Instruments Gain Loss In Statement Of Financial Performance [Text Block] Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance Schedule Of Derivative Instruments In Statement Of Financial Position Fair Value [Text Block] Schedule of Derivative Instruments in Statement of Financial Position, Fair Value Schedule Of Earnings Per Share Basic And Diluted Table [Text Block] Schedule of Earnings Per Share, Basic and Diluted Scheduleof Finite Lived Intangible Assets Future Amortization Expense Table [Text Block] Schedule of Finite-Lived Intangible Assets, Future Amortization Expense Schedule Of Finite Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Schedule Of Goodwill [Text Block] Schedule of Goodwill Schedule Of Notional Amounts Of Outstanding Derivative Positions Table [Text Block] Schedule of Notional Amounts of Outstanding Derivative Positions Schedule Of Property Plant And Equipment [Table] Schedule of Property, Plant and Equipment [Table] Schedule Of Purchase Price Allocation Table [Text Block] Consideration Paid and Amounts of Assets Acquired and Liabilities Assumed Schedule Of Restructuring And Related Costs [Table] Schedule of Restructuring and Related Costs [Table] Schedule Of Restructuring And Related Costs [Text Block] Schedule of Restructuring and Related Costs Schedule Of Segment Reporting Information By Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Schedule Of Segment Reporting Information By Segment [Text Block] Schedule of Segment Reporting Information, by Segment Scores [Member] Scores [Member] Scores Segment [Domain] Segment [Domain] Segment Reporting Disclosure [Text Block] Segment Information Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Segment Reporting Information, Net Operating Income (Loss) Segment Reporting Information Net Operating Income Loss Segment operating income Segment Reporting Information, Operating Expense Segment Reporting Information Operating Expense Segment operating expense Segment Reporting Information Revenue [Abstract] Segment revenues: Selling General And Administrative Expense Selling, general and administrative Selling General And Administrative Expenses [Member] Selling, general and administrative expenses Senior Long Term Notes Senior notes Senior Notes Carrying value of Senior Notes Senior Notes Current Current maturities on long-term debt Senior Notes, July Twenty Ten [Member] Senior Notes July Twenty Ten [Member] July 2010 senior notes Senior Notes, May Twenty Zero Eight [Member] Senior Notes May Twenty Zero Eight [Member] May 2008 senior notes Share Based Compensation Share-based compensation Unallocated share-based compensation expense Shares Outstanding Ending Balance (in shares) Beginning Balance (in shares) Significant Accounting Policies [Text Block] Nature of Business Statement Business Segments [Axis] Business Segments [Axis] Statement Equity Components [Axis] Equity Components [Axis] Statement [Line Items] Statement [Line Items] Statement Of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Statement Of Financial Position [Abstract] Statement of Financial Position [Abstract] Statement Of Stockholders Equity [Abstract] Statement of Stockholders' Equity [Abstract] Statement [Table] Statement [Table] Stockholders Equity Ending Balance Beginning Balance Total stockholders' equity Stockholders Equity [Abstract] Stockholders' equity: Stock Issued During Period Shares Restricted Stock Award Net Of Forfeitures Issuance of restricted stock to employees from treasury (in shares) Stock Issued During Period Shares Stock Options Exercised Exercise of stock options (in shares) Stock Issued During Period Value Employee Stock Purchase Plan Issuance of ESPP shares from treasury Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures Issuance of restricted stock to employees from treasury Stock Issued During Period Value Stock Options Exercised Exercise of stock options Supplemental Balance Sheet Disclosures [Text Block] Composition of Certain Financial Statement Captions Supplemental Cash Flow Information [Abstract] Supplemental disclosures of cash flow information: Technology Services Revenue Professional services Text Block [Abstract] Text Block [Abstract] Tools [Member] Tools [Member] Tools Trading Symbol Trading Symbol Transactional-based revenue from credit scoring, data processing, data management and internet delivery services; and revenue from transactional or unit-based license fees under software license arrangements, network service and internally-hosted software agreements recognized based on minimum contractual amounts or on system usage that exceeds minimum contractual amounts. Revenue derived from maintenance services provided under contracts or arrangements with clients. Transactional And Maintenance Revenue Transactional and maintenance Treasury Stock [Member] Treasury Stock Treasury Stock Shares Treasury stock, shares Treasury Stock Shares Acquired Repurchases of common stock (in shares) Treasury Stock Value Treasury stock, at cost (54,165 and 51,773 shares at June 30, 2012 and September 30, 2011, respectively) Treasury Stock Value Acquired Cost Method Repurchases of common stock Type Of Restructuring [Domain] Type of Restructuring [Domain] Unallocated Amount To Segment [Member] Unallocated Corporate Expenses Unrecognized Tax Benefits Unrecognized tax benefits, uncertain tax positions Unrecognized Tax Benefits Interest On Income Taxes Accrued Unrecognized tax benefits, accrued interest Use Of Estimates Use of Estimates U S Government Agencies Debt Securities [Member] U.S. government obligations Weighted Average Number Diluted Shares Outstanding Adjustment Effect of dilutive securities Weighted Average Number Of Diluted Shares Outstanding Diluted Diluted weighted-average shares Weighted Average Number Of Shares Outstanding [Abstract] Denominator-shares Weighted Average Number Of Shares Outstanding Basic Basic Basic weighted-average shares Weighted Average Number Of Shares Outstanding Diluted Disclosure Items [Abstract] Shares used in computing earnings per share: