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Supplemental Disclosures (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Supplemental Disclosures [Abstract]
Effective tax rate	23.80%	19.50%	48.60%	37.60%
Reduction to income tax expense due to settlements			$ 61.0	$ 12.3
Cash paid for interest and income taxes, net of income tax refunds			$ 0.9	$ 1.2

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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