Income Taxes - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 6 Months Ended | |||
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Jun. 30, 2012
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Jun. 30, 2011
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Jun. 30, 2012
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Jun. 30, 2011
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Dec. 31, 2011
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Income Taxes [Abstract] | |||||
Income tax expense | $ 74.4 | $ 54.8 | $ 128.0 | $ 104.3 | |
Income tax expense, percentage of pre-tax income | 32.40% | 31.80% | 30.00% | 32.00% | |
Federal statutory tax rate | 35.00% | 35.00% | 35.00% | 35.00% | |
Total gross unrecognized tax benefits | 97.2 | 97.2 | 98.1 | ||
Unrecognized tax benefits, period increase (decrease) | (0.9) | ||||
Unrecognized tax benefits, if recognized, would reduce the Company's effective tax rate | 92.9 | 92.9 | 93.8 | ||
Gross interest related to unrecognized tax benefit accrued | $ 8.8 | $ 8.8 | $ 7.9 |
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- Definition
A ratio calculated by dividing the reported amount of income tax expense attributable to continuing operations for the period by GAAP-basis pretax income from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The domestic federal statutory tax rate applicable under enacted tax laws to the Company's pretax income from continuing operations for the period. The "statutory" tax rate is the regular tax rate if there are alternative tax systems. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The gross amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns as of the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
This element represents the amount of interest expense accrued as of the date of the statement of financial position for an underpayment of income taxes computed by applying the applicable statutory rate of interest to the difference between a tax position recognized for financial reporting purposes and the amount previously taken or expected to be taken in a tax return of the entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The net amount of all increases and decreases in unrecognized tax benefits for the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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