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CONSOLIDATED STATEMENTS OF EQUITY (unaudited) - USD ($) $ in Thousands | Total | Total | Total Restricted Stock Units | Total Stock Appreciation Rights | Non- controlling Interests subject to put provisions | Common stock | Common stock Restricted Stock Units | Common stock Stock Appreciation Rights | Additional paid-in capital | Additional paid-in capital Restricted Stock Units | Additional paid-in capital Stock Appreciation Rights | Retained earnings | Treasury stock | Treasury stock Restricted Stock Units | Treasury stock Stock Appreciation Rights | Accumulated other comprehensive(loss) | Non-controlling interests not subject to put provisions
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Beginning balance at Dec. 31, 2015 |  | $ 4,870,780 |  |  | $ 864,066 | $ 217 |  |  | $ 1,118,326 |  |  | $ 4,356,835 | $ (544,772) |  |  | $ (59,826) | $ 213,392
Beginning Balance (in shares) at Dec. 31, 2015 |  |  |  |  |  | 217,120,000 |  |  |  |  |  |  | (7,366,000) |  |  |  |
Comprehensive income: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other comprehensive income | $ (61) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance at Dec. 31, 2015 |  | 4,870,780 |  |  | 864,066 | $ 217 |  |  | 1,118,326 |  |  | 4,356,835 | $ (544,772) |  |  | (59,826) | 213,392
Beginning Balance (in shares) at Dec. 31, 2015 |  |  |  |  |  | 217,120,000 |  |  |  |  |  |  | (7,366,000) |  |  |  |
Comprehensive income: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income |  | 879,874 |  |  | 99,834 |  |  |  |  |  |  | 879,874 |  |  |  |  | 53,374
Other comprehensive income |  | (29,817) |  |  |  |  |  |  |  |  |  |  |  |  |  | (29,817) | 190
Stock purchase shares issued |  | 23,903 |  |  |  | $ 1 |  |  | 23,902 |  |  |  |  |  |  |  |
Stock purchase shares issued (in shares) |  |  |  |  |  | 438,000 |  |  |  |  |  |  | 0 |  |  |  |
Stock unit shares issued/settled |  |  | $ 0 | $ 0 |  |  | $ 0 | $ 0 |  | $ (19,815) | $ (36,685) |  |  | $ 19,815 | $ 36,685 |  |
Stock unit shares issued/settled (in shares) |  |  |  |  |  |  | 4,000 | 218,000 |  |  |  |  |  | 276,000 | 513,000 |  |
Stock-settled stock-based compensation expense |  | 37,970 |  |  |  |  |  |  | 37,970 |  |  |  |  |  |  |  |
Excess tax benefits from stock awards exercised |  | 13,251 |  |  |  |  |  |  | 13,251 |  |  |  |  |  |  |  |
Changes in noncontrolling interest from: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Distributions |  |  |  |  | (111,092) |  |  |  |  |  |  |  |  |  |  |  | (81,309)
Contributions |  |  |  |  | 33,517 |  |  |  |  |  |  |  |  |  |  |  | 14,073
Acquisitions and divestitures |  | 3,423 |  |  | 28,874 |  |  |  | 3,423 |  |  |  |  |  |  |  | 2,585
Partial purchases |  | (13,105) |  |  | (6,660) |  |  |  | (13,105) |  |  |  |  |  |  |  | (1,747)
Fair value |  | (65,855) |  |  | 65,855 |  |  |  | (65,855) |  |  |  |  |  |  |  |
Reclassifications and expirations of puts |  |  |  |  | (1,136) |  |  |  |  |  |  |  |  |  |  |  | 1,136
Purchase of treasury stock |  | (1,072,377) |  |  |  |  |  |  |  |  |  |  | $ (1,072,377) |  |  |  |
Purchase of treasury stock (in shares) |  |  |  |  |  |  |  |  |  |  |  |  | (16,649,000) |  |  |  |
Retirement of treasury stock |  | 0 |  |  |  | $ (23) |  |  | (34,230) |  |  | (1,526,396) | $ 1,560,649 |  |  |  |
Retirement of treasury stock (in shares) |  |  |  |  |  | (23,226,000) |  |  |  |  |  |  | 23,226,000 |  |  |  |
Ending balance at Dec. 31, 2016 | $ 4,849,741 | 4,648,047 |  |  | 973,258 | $ 195 |  |  | 1,027,182 |  |  | 3,710,313 | $ 0 |  |  | (89,643) | 201,694
Ending Balance (in shares) at Dec. 31, 2016 | 194,554,491 |  |  |  |  | 194,554,000 |  |  |  |  |  |  | 0 |  |  |  |
Comprehensive income: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other comprehensive income | $ (6,374) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income |  | 574,698 |  |  | 56,721 |  |  |  |  |  |  | 574,698 |  |  |  |  | 30,491
Other comprehensive income | 62,333 | 62,335 |  |  |  |  |  |  |  |  |  |  |  |  |  | 62,335 | (2)
Stock unit shares issued/settled |  |  | $ 0 | $ 0 |  |  | $ 0 | $ 0 |  | $ 0 | $ 0 |  |  | $ 0 | $ 0 |  |
Stock unit shares issued/settled (in shares) |  |  |  |  |  |  | 105,000 | 116,000 |  |  |  |  |  | 0 | 0 |  |
Stock-settled stock-based compensation expense |  | 17,468 |  |  |  |  |  |  | 17,468 |  |  |  |  |  |  |  |
Changes in noncontrolling interest from: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Distributions |  | 0 |  |  | (72,636) |  |  |  |  |  |  |  |  |  |  |  | (43,439)
Contributions |  | 0 |  |  | 31,368 |  |  |  |  |  |  |  |  |  |  |  | 8,504
Acquisitions and divestitures |  | (709) |  |  | 34,365 |  |  |  | (709) |  |  |  |  |  |  |  | (7,457)
Partial purchases |  | 195 |  |  | (1,544) |  |  |  | 195 |  |  |  |  |  |  |  | (83)
Fair value |  | 13,954 |  |  | (13,954) |  |  |  | 13,954 |  |  |  |  |  |  |  |
Reclassifications and expirations of puts |  |  |  |  | 2,126 |  |  |  |  |  |  |  |  |  |  |  | (2,126)
Purchase of treasury stock | $ (231,674) | (231,674) |  |  |  |  |  |  |  |  |  |  | $ (231,674) |  |  |  |
Purchase of treasury stock (in shares) | (3,575,000) |  |  |  |  |  |  |  |  |  |  |  | 3,575,000 |  |  |  |
Ending balance at Jun. 30, 2017 | $ 5,271,896 | 5,084,314 |  |  | 1,009,704 | $ 195 |  |  | 1,058,090 |  |  | 4,285,011 | $ (231,674) |  |  | (27,308) | 187,582
Ending Balance (in shares) at Jun. 30, 2017 | 191,200,237 |  |  |  |  | 194,775,000 |  |  |  |  |  |  | (3,575,000) |  |  |  |
Comprehensive income: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other comprehensive income | $ 49,578 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ending balance at Jun. 30, 2017 | $ 5,271,896 | $ 5,084,314 |  |  | $ 1,009,704 | $ 195 |  |  | $ 1,058,090 |  |  | $ 4,285,011 | $ (231,674) |  |  | $ (27,308) | $ 187,582
Ending Balance (in shares) at Jun. 30, 2017 | 191,200,237 |  |  |  |  | 194,775,000 |  |  |  |  |  |  | (3,575,000) |  |  |  |

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