Commitments and Contingencies (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2011
Estimated future cash outlays related to principal contractual obligations
2012	$ 138.8
2013	78.3
2013	20.7
2015	13.8
2016	1.7
Total	253.3
Operating Leases, Future Minimum Payments Due [Abstract]
2012	81.8
2013	57.2
2014	37.5
2015	24.8
2016	17.3
Thereafter	40.3
Total	$ 258.9

The total of future contractually required payments on leases defined as operating.

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