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Income Taxes (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010	Dec. 31, 2010
Effective tax rate	29.60%	24.10%	29.20%	28.00%
Liability for uncertain tax positions including penalties and interest, noncurrent	$ 22.6		$ 22.6		$ 17.1
BMS [Member]
Income tax receivable	$ 16.3		$ 16.3

- 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.

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