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Income Tax Expense Level 4 (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended			9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Mar. 31, 2011	Sep. 30, 2012	Sep. 30, 2011
INCOME TAX EXPENSE [Abstract]
Effective Income Tax Rate, Continuing Operations	25.50%	24.50%		24.90%	21.90%
Income Tax Examination, Liability (Refund) Adjustment from Settlement with Taxing Authority			$ 10.4
Tax Adjustments, Settlements, and Unusual Provisions			$ 6.0

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.

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- Definition

Reflects the effects of adjustments of previously recorded tax expense, significant settlements of income tax disputes, and unusual tax positions or infrequent actions taken by the entity, including tax assessment reversal, IRS tax settlement and unusual repatriation of foreign earnings.

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