Risks And Concentrations Of Credit Risk	12 Months Ended
Aug. 31, 2011
Risks And Concentrations Of Credit Risk [Abstract]
Risks And Concentrations Of Credit Risk	17. RISKS AND CONCENTRATIONS OF CREDIT RISK Financial Risk Management In the normal course of business, FactSet is exposed to foreign currency exchange risk and interest rate risk that could impact its financial position and results of operations. Foreign Currency Exchange Risk The Company is exposed to changes in foreign currency exchange rates, which could affect its operating results, financial position and cash flows. The Company's primary foreign currency market exposures include the Euro, British Pound Sterling, Japanese Yen, Indian Rupee and Philippines Peso. The Company's non-U.S. dollar denominated revenues expected to be recognized over the next twelve months are estimated to be $16 million while its non-U.S. dollar denominated expenses are $165 million, which translates into a net foreign currency exposure of $149 million per year. To the extent that FactSet's international activities recorded in local currencies increase in the future, its exposure to fluctuations in currency exchange rates will correspondingly increase. FactSet manages its exposure to foreign currency exchange risk through its regular operating and financing activities and, when appropriate, through the use of derivative financial instruments. These derivative financial instruments are utilized to hedge currency exposures as well as to reduce earnings volatility resulting from shifts in market rates. FactSet only enters into foreign currency forward contracts to manage foreign currency exposures. The fair market values of all the Company's derivative contracts change with fluctuations in currency rates and are designed so that any changes in their values are offset by changes in the values of the underlying exposures. See Note 5 to the Consolidated Financial Statements for additional analysis of the Company's foreign currency exchange rate risk. Interest Rate Risk The fair market value of the Company's cash and cash equivalents at August 31, 2011 was $182 million. FactSet's cash and cash equivalents consist of demand deposits and money market funds with maturities of three months or less at the date of acquisition and are reported at fair value. It is anticipated that the fair market value of the Company's portfolio will continue to be immaterially affected by fluctuations in interest rates. Because FactSet has a restrictive investment policy, its financial exposure to fluctuations in interest rates is expected to remain low. The Company does not believe that the value or liquidity of its cash and cash equivalents have been significantly impacted by the recent credit crisis. Current market events have not required the Company to modify materially or change its financial risk management strategies with respect to its exposures to foreign currency exchange risk and interest rate risk. Concentrations of Credit Risk Cash equivalents Cash and cash equivalents are maintained with several financial institutions. Deposits held with banks may exceed the amount of insurance provided on such deposits. Generally, these deposits may be redeemed upon demand and are maintained with financial institutions with reputable credit and therefore bear minimal credit risk. The Company seeks to mitigate its credit risks by spreading such risks across multiple counterparties and monitoring the risk profiles of these counterparties. Accounts Receivable Accounts receivable are unsecured and are derived from revenues earned from clients located around the globe. FactSet performs ongoing credit evaluations of its clients and does not require collateral from its clients. The Company maintains reserves for potential write-offs and these losses have historically been within expectations. No single client represented 10% or more of FactSet's total revenues in any fiscal year presented. As of August 31, 2011 and 2010, respectively, the Company's largest individual client accounted for 2% of total subscriptions. In both years, subscriptions from the ten largest clients did not surpass 16% of total subscriptions. Derivative Instruments As a result of the use of derivative instruments, the Company is exposed to counterparty credit risk. FactSet has incorporated counterparty risk into the fair value of its derivative assets and its own credit risk into the value of the Company's derivative liabilities. FactSet calculates credit risk from observable data related to credit default swaps as quoted by publicly available information. Counterparty risk is represented by CDS spreads related to the senior secured debt of the respective bank with whom FactSet has executed these derivative transactions. Because CDS spread information is not available for FactSet, the Company's credit risk is determined based on using a simple average of CDS spreads for peer companies as determined by FactSet. To mitigate counterparty credit risk, FactSet enters into contracts with large financial institutions (JPMorgan Chase and Bank of America) and regularly reviews its credit exposure balances as well as the creditworthiness of the counterparties. Data Content Providers Certain datasets that FactSet relies on have a limited number of suppliers, although the Company makes every effort to assure that, where reasonable, alternative sources are available. However, FactSet is not dependent on any one third-party data supplier in order to meet the needs of its clients. FactSet combines the data from these commercial databases into its own dedicated single online service, which the client accesses to perform their analysis. No single vendor or data supplier represented 10% or more of FactSet's total expenses in any fiscal year presented.

Risks And Concentrations Of Credit Risk

12 Months Ended

Aug. 31, 2011

Risks And Concentrations Of Credit Risk [Abstract]

17. RISKS AND CONCENTRATIONS OF CREDIT RISK

Financial Risk Management

In the normal course of business, FactSet is exposed to foreign currency exchange risk and interest rate risk that could impact its financial position and results of operations.

Foreign Currency Exchange Risk

The Company is exposed to changes in foreign currency exchange rates, which could affect its operating results, financial position and cash flows. The Company's primary foreign currency market exposures include the Euro, British Pound Sterling, Japanese Yen, Indian Rupee and Philippines Peso. The Company's non-U.S. dollar denominated revenues expected to be recognized over the next twelve months are estimated to be $16 million while its non-U.S. dollar denominated expenses are $165 million, which translates into a net foreign currency exposure of $149 million per year. To the extent that FactSet's international activities recorded in local currencies increase in the future, its exposure to fluctuations in currency exchange rates will correspondingly increase. FactSet manages its exposure to foreign currency exchange risk through its regular operating and financing activities and, when appropriate, through the use of derivative financial instruments. These derivative financial instruments are utilized to hedge currency exposures as well as to reduce earnings volatility resulting from shifts in market rates. FactSet only enters into foreign currency forward contracts to manage foreign currency exposures. The fair market values of all the Company's derivative contracts change with fluctuations in currency rates and are designed so that any changes in their values are offset by changes in the values of the underlying exposures. See Note 5 to the Consolidated Financial Statements for additional analysis of the Company's foreign currency exchange rate risk.

Interest Rate Risk

The fair market value of the Company's cash and cash equivalents at August 31, 2011 was $182 million. FactSet's cash and cash equivalents consist of demand deposits and money market funds with maturities of three months or less at the date of acquisition and are reported at fair value. It is anticipated that the fair market value of the Company's portfolio will continue to be immaterially affected by fluctuations in interest rates. Because FactSet has a restrictive investment policy, its financial exposure to fluctuations in interest rates is expected to remain low. The Company does not believe that the value or liquidity of its cash and cash equivalents have been significantly impacted by the recent credit crisis.

Current market events have not required the Company to modify materially or change its financial risk management strategies with respect to its exposures to foreign currency exchange risk and interest rate risk.

Concentrations of Credit Risk

Cash equivalents

Cash and cash equivalents are maintained with several financial institutions. Deposits held with banks may exceed the amount of insurance provided on such deposits. Generally, these deposits may be redeemed upon demand and are maintained with financial institutions with reputable credit and therefore bear minimal credit risk. The Company seeks to mitigate its credit risks by spreading such risks across multiple counterparties and monitoring the risk profiles of these counterparties.

Accounts Receivable

Accounts receivable are unsecured and are derived from revenues earned from clients located around the globe. FactSet performs ongoing credit evaluations of its clients and does not require collateral from its clients. The Company maintains reserves for potential write-offs and these losses have historically been within expectations. No single client represented 10% or more of FactSet's total revenues in any fiscal year presented. As of August 31, 2011 and 2010, respectively, the Company's largest individual client accounted for 2% of total subscriptions. In both years, subscriptions from the ten largest clients did not surpass 16% of total subscriptions.

Derivative Instruments

As a result of the use of derivative instruments, the Company is exposed to counterparty credit risk. FactSet has incorporated counterparty risk into the fair value of its derivative assets and its own credit risk into the value of the Company's derivative liabilities. FactSet calculates credit risk from observable data related to credit default swaps as quoted by publicly available information. Counterparty risk is represented by CDS spreads related to the senior secured debt of the respective bank with whom FactSet has executed these derivative transactions. Because CDS spread information is not available for FactSet, the Company's credit risk is determined based on using a simple average of CDS spreads for peer companies as determined by FactSet. To mitigate counterparty credit risk, FactSet enters into contracts with large financial institutions (JPMorgan Chase and Bank of America) and regularly reviews its credit exposure balances as well as the creditworthiness of the counterparties.

Data Content Providers

Certain datasets that FactSet relies on have a limited number of suppliers, although the Company makes every effort to assure that, where reasonable, alternative sources are available. However, FactSet is not dependent on any one third-party data supplier in order to meet the needs of its clients. FactSet combines the data from these commercial databases into its own dedicated single online service, which the client accesses to perform their analysis. No single vendor or data supplier represented 10% or more of FactSet's total expenses in any fiscal year presented.