Redeemable Noncontrolling Interests Redeemable Noncontrolling Interests (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2012	Dec. 31, 2012 Consolidated Joint Venture [Member]	Sep. 30, 2012 Consolidated Joint Venture [Member]
Redeemable Noncontrolling Interest [Line Items]
Parent's ownership percentage	100.00%	87.00%	87.00%
Redeemable Noncontrolling Interest [Roll Forward]
Balance at December 31, 2011	$ 14.8
Adjustments related to combination	(2.1)
Net loss attributable to redeemable noncontrolling interests	(2.0)
Other comprehensive income, net of tax	0.1
Other comprehensive income, net of tax	0
Balance at December 31, 2012	$ 10.8

Net of tax amount of other comprehensive income (loss) attributable to noncontrolling interests.

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+ Details

- Definition

As of the reporting date, the aggregate carrying amount of all noncontrolling interests which are redeemable by the (parent) entity (1) at a fixed or determinable price on a fixed or determinable date, (2) at the option of the holder of the noncontrolling interest, or (3) upon occurrence of an event that is not solely within the control of the (parent) entity. This item includes noncontrolling interest holder's ownership (or holders' ownership) regardless of the type of equity interest (common, preferred, other) including all potential organizational (legal) forms of the investee entity.

+ References

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-Appendix A

+ Details