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Affiliate Equity (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Affiliate Equity |  |  |
Affiliate equity compensation expense attributable to noncontrolling interest | $ 15.9 | $ 16.3 | $ 6.8
Compensation expenses related to Affiliate equity | 68.2 | 85.3 |
Compensation expenses related to Affiliate equity, attributable to controlling interest | $ 32.1 | $ 33.0 |
Weighted average period of recognition | 4 years |  |

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