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CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Thousands | Total | Non- controlling Interests subject to put provisions | Common stock | Common stock Stock Appreciation Rights | Additional paid-in capital | Additional paid-in capital Stock Appreciation Rights | Retained earnings | Treasury stock | Treasury stock Stock Appreciation Rights | Accumulated other comprehensive income (loss) | Total | Total Stock Appreciation Rights | Non-controlling interests not subject to put provisions
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Beginning Balance at Dec. 31, 2012 |  | $ 580,692 | $ 270 |  | $ 1,208,665 |  | $ 3,731,835 | $ (1,162,336) |  | $ (15,297) | $ 3,763,137 |  | $ 153,788
Beginning Balance (in shares) at Dec. 31, 2012 |  |  | 269,725,000 |  |  |  |  | (58,728,000) |  |  |  |  |
Comprehensive income: |  |  |  |  |  |  |  |  |  |  |  |  |
Net income |  | 78,215 |  |  |  |  | 633,446 |  |  |  | 633,446 |  | 45,540
Other comprehensive income (loss) | $ 12,652 |  |  |  |  |  |  |  |  | 12,652 | 12,652 |  |
Stock purchase shares issued |  |  |  |  | 12,817 |  |  |  |  |  | 12,817 |  |
Stock purchase shares issued (in shares) |  |  | 238,000 |  |  |  |  |  |  |  |  |  |
Stock-settled shares issued |  |  |  |  | (3,286) | $ (29,025) |  | $ 3,247 | $ 28,561 |  | (39) | $ (464) |
Stock-settled shares issued (in shares) |  |  | 7,000 | 313,000 |  |  |  | 164,000 | 1,444,000 |  |  |  |
Stock-based compensation expense |  |  |  |  | 59,998 |  |  |  |  |  | 59,998 |  |
Excess tax benefits from stock awards exercised |  |  |  |  | 36,197 |  |  |  |  |  | 36,197 |  |
Distributions to noncontrolling interests |  | (80,353) |  |  |  |  |  |  |  |  |  |  | (58,973)
Contributions from noncontrolling interests |  | 22,053 |  |  |  |  |  |  |  |  |  |  | 14,943
Sales and assumptions of additional noncontrolling interests |  | 23,642 |  |  | (1,442) |  |  |  |  |  | (1,442) |  | 10,770
Purchases from noncontrolling interests |  | (512) |  |  | (3,119) |  |  |  |  |  | (3,119) |  | (147)
Expiration of put option and other reclassification |  | (7,141) |  |  |  |  |  |  |  |  |  |  | 7,141
Changes in fair value of noncontrolling interests |  | 80,704 |  |  | (80,704) |  |  |  |  |  | (80,704) |  |
Treasury stock retirement |  |  | $ (57) |  | (129,179) |  | (1,001,292) | $ 1,130,528 |  |  |  |  |
Treasury stock retirement (Shares) |  |  | (57,120,000) |  |  |  |  | 57,120,000 |  |  |  |  |
Ending Balance at Dec. 31, 2013 |  | 697,300 | $ 213 |  | 1,070,922 |  | 3,363,989 |  |  | (2,645) | 4,432,479 |  | 173,062
Ending Balance (in shares) at Dec. 31, 2013 |  |  | 213,163,000 |  |  |  |  |  |  |  |  |  |
Comprehensive income: |  |  |  |  |  |  |  |  |  |  |  |  |
Purchase of treasury stock (in shares) | 0 |  |  |  |  |  |  |  |  |  |  |  |
Net income |  | 88,425 |  |  |  |  | 723,114 |  |  |  | 723,114 |  | 51,791
Other comprehensive income (loss) | $ (22,372) |  |  |  |  |  |  |  |  | (22,372) | (22,372) |  |
Stock purchase shares issued |  |  |  |  | 19,010 |  |  |  |  |  | 19,010 |  |
Stock purchase shares issued (in shares) |  |  | 298,000 |  |  |  |  |  |  |  |  |  |
Stock-settled shares issued |  |  | $ 1 | $ 2 | (28) | (2) |  |  |  |  | (27) |  |
Stock-settled shares issued (in shares) |  |  | 304,000 | 1,876,000 |  |  |  |  |  |  |  |  |
Stock-based compensation expense |  |  |  |  | 54,969 |  |  |  |  |  | 54,969 |  |
Excess tax benefits from stock awards exercised |  |  |  |  | 45,271 |  |  |  |  |  | 45,271 |  |
Distributions to noncontrolling interests |  | (93,884) |  |  |  |  |  |  |  |  |  |  | (55,455)
Contributions from noncontrolling interests |  | 41,876 |  |  |  |  |  |  |  |  |  |  | 22,779
Sales and assumptions of additional noncontrolling interests |  | 25,220 |  |  | 355 |  |  |  |  |  | 355 |  | 4,165
Purchases from noncontrolling interests |  | (6,111) |  |  | (5,357) |  |  |  |  |  | (5,357) |  | (6,544)
Other reclassification |  |  |  |  | 210 |  |  |  |  |  | 210 |  |
Changes in fair value of noncontrolling interests |  | 77,139 |  |  | (77,139) |  |  |  |  |  | (77,139) |  |
Ending Balance at Dec. 31, 2014 | $ 5,360,311 | 829,965 | $ 216 |  | 1,108,211 |  | 4,087,103 |  |  | (25,017) | 5,170,513 |  | 189,798
Ending Balance (in shares) at Dec. 31, 2014 | 215,640,968 |  | 215,641,000 |  |  |  |  |  |  |  |  |  |
Comprehensive income: |  |  |  |  |  |  |  |  |  |  |  |  |
Purchase of treasury stock (in shares) | 0 |  |  |  |  |  |  |  |  |  |  |  |
Net income |  | 96,510 |  |  |  |  | 269,732 |  |  |  | 269,732 |  | 61,168
Other comprehensive income (loss) | $ (34,809) |  |  |  |  |  |  |  |  | (34,809) | (34,809) |  |
Stock purchase shares issued |  |  |  |  | (6,079) |  |  | $ 30,608 |  |  | 24,529 |  |
Stock purchase shares issued (in shares) |  |  |  |  |  |  |  | 414,000 |  |  |  |  |
Stock-settled shares issued |  |  |  | $ 1 |  | $ (1) |  |  |  |  |  |  |
Stock-settled shares issued (in shares) |  |  | 348,000 | 1,131,000 |  |  |  |  |  |  |  |  |
Stock-based compensation expense |  |  |  |  | 56,899 |  |  |  |  |  | 56,899 |  |
Excess tax benefits from stock awards exercised |  |  |  |  | 28,157 |  |  |  |  |  | 28,157 |  |
Distributions to noncontrolling interests |  | (103,355) |  |  |  |  |  |  |  |  |  |  | (71,280)
Contributions from noncontrolling interests |  | 25,795 |  |  |  |  |  |  |  |  |  |  | 28,849
Sales and assumptions of additional noncontrolling interests |  | 10,654 |  |  |  |  |  |  |  |  |  |  | 6,875
Purchases from noncontrolling interests |  | (8,538) |  |  | (55,826) |  |  |  |  |  | (55,826) |  | (2,018)
Changes in fair value of noncontrolling interests |  | 13,035 |  |  | (13,035) |  |  |  |  |  | (13,035) |  |
Ending Balance at Dec. 31, 2015 | $ 5,084,172 | $ 864,066 | $ 217 |  | $ 1,118,326 |  | $ 4,356,835 | $ (544,772) |  | $ (59,826) | 4,870,780 |  | $ 213,392
Ending Balance (in shares) at Dec. 31, 2015 | 209,754,247 |  | 217,120,000 |  |  |  |  | (7,366,000) |  |  |  |  |
Comprehensive income: |  |  |  |  |  |  |  |  |  |  |  |  |
Purchase of treasury stock | $ (575,380) |  |  |  |  |  |  | $ (575,380) |  |  | $ (575,380) |  |
Purchase of treasury stock (in shares) | (7,779,958) |  |  |  |  |  |  | (7,780,000) |  |  |  |  |

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