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Affiliate Equity (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2013 | Jun. 30, 2012 | Jun. 30, 2013 | Jun. 30, 2012
Affiliate Equity |  |  |  |
Compensation expenses related to Affiliate equity | $ 9.1 | $ 8.8 | $ 17.5 | $ 15.1
Compensation expenses related to Affiliate equity, attributable to controlling interest | 3.2 | 4.8 | 8.4 | 7.0
Changes in redeemable non-controlling interests during the period |  |  |  |
Balance at the beginning of the period |  |  | 477.5 |
Issuance of Redeemable non-controlling interests |  |  | 3.4 |
Repurchase of Redeemable non-controlling interests |  |  | (28.7) |
Changes in redemption value |  |  | 67.6 |
Balance at the end of the period | 519.8 |  | 519.8 |
Effect of changes in the Company's ownership interest in its Affiliates on the controlling interest's equity |  |  |  |
Net income (controlling interest) | 64.7 | 6.6 | 127.1 | 44.0
Decrease in controlling interest paid-in capital from purchases and sales of Affiliate equity | (19.3) | (2.6) | (24.1) | (8.6)
Change from Net income (controlling interest) and net transfers with non-controlling interests | $ 45.4 | $ 4.0 | $ 103.0 | $ 35.4

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