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Affiliate Equity (Tables) | 12 Months Ended
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Dec. 31, 2017
Affiliate Equity |
Schedule of Affiliate Equity Expense | The following is a summary of Affiliate equity expense:
| For the Years Ended December 31,
| 2015 |  | 2016 |  | 2017
Controlling interest | $ | 16.9 |  |  | $ | 10.0 |  |  | $ | 13.2 |
Non-controlling interest | 51.6 |  |  | 31.2 |  |  | 36.8 |
Total | $ | 68.5 |  |  | $ | 41.2 |  |  | $ | 50.0 |
Schedule of Affiliate Equity Unrecognized Expense | The following is a summary of unrecognized Affiliate equity expense for the years ended December 31, 2015, 2016 and 2017:
| Unrecognized Affiliate Equity Expense
Year | Controlling Interest |  | Remaining Life |  | Non-Controlling Interest |  | Remaining Life
2015 | $ | 22.4 |  |  | 3 years |  | $ | 51.9 |  |  | 5 years
2016 | 31.3 |  |  | 4 years |  | 70.7 |  |  | 5 years
2017 | 33.3 |  |  | 5 years |  | 95.9 |  |  | 6 years
Schedule of the Effect of Changes in the Company's Ownership 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 discloses the cumulative effect that ownership changes had on the controlling interest’s equity related only to Affiliate equity transactions that settled during the periods:
|  | For the Years Ended December 31,
|  | 2015 |  | 2016 |  | 2017
Net income (controlling interest) |  | $ | 509.5 |  |  | $ | 472.8 |  |  | $ | 689.5 |
Increase / (decrease) in controlling interest paid-in capital from purchases and sales of Affiliate equity issuances |  | 0.9 |  |  | 1.6 |  |  | (1.0 | )
Decrease in controlling interest paid-in capital related to Affiliate equity repurchases |  | (87.6 | ) |  | (38.0 | ) |  | (116.2 | )
Net income attributable to controlling interest and transfers from non-controlling interests |  | $ | 422.8 |  |  | $ | 436.4 |  |  | $ | 572.3 |

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