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Income Taxes - Additional information (Detail) (USD $)
In Millions, unless otherwise specified |
6 Months Ended | |
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Jun. 30, 2012
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Jun. 30, 2011
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| Income Taxes [Line Items] | ||
| Effective income tax rate | 22.20% | 22.90% |
| Tax settlements of prior years tax audits | $ 8.0 | |
| Reductions due to settlement of foreign tax claim | 3.5 | |
| Tax benefits from partial release of a valuation allowance related to capital loss carryforwards | 11.1 | |
| Realization of unrecognized tax benefits | 12.8 | |
| Decrease in unrecognized tax benefits and associated interest primarily due to the audit settlements | 8.0 | |
| Total unrecognized tax benefits | 94.7 | |
| Unrecognized tax benefits and interest | 5.3 | |
| Possible decrease in unrecognized income tax benefits | $ 5.5 | |
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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 sum of the differences between total income tax expense or benefit as reported in the Income Statement and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to all income tax settlements for the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The portion of the difference between total income tax expense or benefit as reported in the Income Statement and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to domestic income tax settlements for the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The portion of the difference between total income tax expense or benefit as reported in the Income Statement and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to foreign income tax settlements for the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The amount of the unrecognized tax benefit of a position taken for which it is reasonably possible that the total amount thereof will significantly increase or decrease within twelve months of the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The gross amount of decreases in unrecognized tax benefits resulting from settlements with taxing authorities. 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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- Definition
The amount of the change in the period in the valuation allowance for a specified deferred tax asset. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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