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Commitments and Contingencies (Details) (USD $) In Millions, unless otherwise specified | Dec. 31, 2011
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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

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