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Affiliate Equity (Tables) | 9 Months Ended
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Sep. 30, 2018
Affiliate Equity [Abstract] |
Schedule of Affiliate Equity Compensation | The following table presents Affiliate equity expense:
| For the Three Months Ended September 30, |  | For the Nine Months Ended September 30,
| 2017 |  | 2018 |  | 2017 |  | 2018
Controlling interest | $ | 2.3 |  |  | $ | 6.1 |  |  | $ | 9.4 |  |  | $ | 10.9 |
Non-controlling interests | 7.7 |  |  | 9.9 |  |  | 29.2 |  |  | 32.8 |
Total | $ | 10.0 |  |  | $ | 16.0 |  |  | $ | 38.6 |  |  | $ | 43.7 |
Schedule of Affiliate Equity Unrecognized Compensation Expense | The following table presents unrecognized Affiliate equity expense:
| Controlling Interest |  | Remaining Life |  | Non-controlling Interests |  | Remaining Life
December 31, 2017 | $ | 33.3 |  |  | 5 years |  | $ | 95.9 |  |  | 6 years
September 30, 2018 | 36.8 |  |  | 5 years |  | 120.0 |  |  | 6 years
Schedule of Changes in the Company's Interest in its Affiliates on the Controlling Interest's Equity | While the Company presents the current redemption value of Affiliate equity within Redeemable non-controlling interests, with changes in the current redemption value increasing or decreasing the controlling interest’s equity over time, the following table presents the cumulative effect that ownership changes had on the controlling interest’s equity related only to Affiliate equity transactions that settled during the applicable periods:
| For the Three Months Ended September 30, |  | For the Nine Months Ended September 30,
| 2017 |  | 2018 |  | 2017 |  | 2018
Net income (controlling interest) | $ | 125.4 |  |  | $ | 124.9 |  |  | $ | 374.2 |  |  | $ | 394.9 |
Decrease in controlling interest paid-in capital from Affiliate equity issuances | (0.3 | ) |  | (0.5 | ) |  | (0.6 | ) |  | (3.8 | )
Decrease in controlling interest paid-in capital from Affiliate equity repurchases | (12.7 | ) |  | (31.7 | ) |  | (81.8 | ) |  | (63.8 | )
Net income (controlling interest) including the net impact of Affiliate equity transactions | $ | 112.4 |  |  | $ | 92.7 |  |  | $ | 291.8 |  |  | $ | 327.3 |

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- Definition Affiliate Equity [Abstract] + References No definition available. + Details
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- Definition Represents a schedule of net income (loss) attributable to the entity and net transfers to non-controlling interest. + References No definition available. + Details
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- Definition Summary of Affiliate Equity Compensation [Table Text Block] + References No definition available. + Details
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