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U.S. State and Local Operating Loss and Credit Carryforwards (Detail) (USD $)
In Millions, unless otherwise specified |
Dec. 31, 2011
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Dec. 31, 2010
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| Operating Loss and Tax Credit Carryforward [Line Items] | ||
| U.S. state and local operating loss carryforwards | $ 859 | $ 1,088 |
| U.S. state and local credit carryforwards | $ 77 | $ 74 |
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- Details
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- Definition
The tax effect as of the balance sheet date of the amount of excess of tax deductions over gross income in a year which cannot be used on the tax return of a state or local jurisdiction in the current year but can be carried forward to reduce taxable income or income taxes payable in a future year, for which there must be sufficient tax-basis income to utilize a portion or all of the carryforward amount to realize the deferred tax asset. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The tax effect as of the balance sheet date of the amount of future tax deductions arising from all unused tax credit carryforwards which have been reduced by a valuation allowance. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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