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CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - USD ($) shares in Millions, $ in Millions | Total | Common Stock | Additional Paid-In Capital | Accumulated Other Comprehensive Income (Loss) | Retained Earnings | Treasury Stock at Cost | Noncontrolling Interest
--- | --- | --- | --- | --- | --- | --- | ---
Beginning Balance (in shares) at Dec. 31, 2013 | 53.9 |  |  |  |  |  |
Beginning Balance at Dec. 31, 2013 | $ 3,144.6 | $ 0.5 | $ 479.9 | $ 74.0 | $ 1,711.2 | $ (131.4) | $ 1,010.4
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |
Net income | 337.4 |  |  |  | 176.2 |  | 161.2
Share-based compensation | 15.2 |  | 15.2 |  |  |  |
Common stock issued under share-based incentive plans | (21.2) |  | (87.2) |  |  | 66.0 |
Tax benefit from share-based incentive plans | $ 44.9 |  | 44.9 |  |  |  |
Settlement of senior convertible securities (in shares) | 1.9 |  |  |  |  |  |
Settlement of senior convertible securities | $ 276.5 | 0.1 | 276.4 |  |  |  |
Forward equity | (45.0) |  | (45.0) |  |  |  |
Investments in Affiliates | 116.6 |  |  |  |  |  | 116.6
Affiliate equity activity | (21.4) |  | (35.2) |  |  |  | 13.8
Distributions to non-controlling interests | (345.5) |  |  |  |  |  | (345.5)
Other comprehensive income (loss) | $ 3.2 |  |  | (0.7) |  |  | 3.9
Ending Balance (in shares) at Jun. 30, 2014 | 55.8 |  |  |  |  |  |
Ending Balance at Jun. 30, 2014 | $ 3,505.3 | 0.6 | 649.0 | 73.3 | 1,887.4 | (65.4) | 960.4
Beginning Balance (in shares) at Dec. 31, 2014 | 55.8 |  |  |  |  |  |
Beginning Balance at Dec. 31, 2014 | $ 3,643.2 | 0.6 | 672.2 | 31.8 | 2,163.3 | (240.9) | 1,016.2
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |
Net income | 410.6 |  |  |  | 256.7 |  | 153.9
Share-based compensation | 17.0 |  | 17.0 |  |  |  |
Common stock issued under share-based incentive plans | 49.3 |  | (123.4) |  |  | 172.7 |
Tax benefit from share-based incentive plans | 42.3 |  | 42.3 |  |  |  |
Affiliate equity activity | (63.9) |  | (106.8) |  |  |  | 42.9
Share repurchases | (278.7) |  |  |  |  | (278.7) |
Distributions to non-controlling interests | (230.0) |  |  |  |  |  | (230.0)
Other comprehensive income (loss) | $ 47.0 |  |  | 44.3 |  |  | 2.7
Ending Balance (in shares) at Jun. 30, 2015 | 55.8 |  |  |  |  |  |
Ending Balance at Jun. 30, 2015 | $ 3,636.8 | $ 0.6 | $ 501.3 | $ 76.1 | $ 2,420.0 | $ (346.9) | $ 985.7

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