XML 33 R40.htm IDEA: XBRL DOCUMENT

Income Taxes (Details) (USD $) In Millions, unless otherwise specified	0 Months Ended	3 Months Ended		9 Months Ended
	Feb. 28, 2011	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Income Tax Expense (Benefit) [Abstract]
Income tax expense		$ 13.6	$ 11.7	$ 39.8	$ 87.8
Changes in valuation allowances of deferred tax assets		$ 0.1	$ (0.2)	$ 1.2	$ (4.2)
Equity interest sold, percentage	50.00%

The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to continuing operations.

The amount of the change in the period in the valuation allowance for a specified deferred tax asset.