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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 | Non-controlling interests not subject to put provisions
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Beginning Balance at Dec. 31, 2013 |  | $ 697,300 | $ 213 |  | $ 1,070,922 |  | $ 3,363,989 |  |  | $ (2,645) | $ 4,432,479 | $ 173,062
Beginning Balance (in shares) at Dec. 31, 2013 |  |  | 213,163,000 |  |  |  |  |  |  |  |  |
Comprehensive income: |  |  |  |  |  |  |  |  |  |  |  |
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 |  | 829,965 | $ 216 |  | 1,108,211 |  | 4,087,103 |  |  | (25,017) | 5,170,513 | 189,798
Ending Balance (in shares) at Dec. 31, 2014 |  |  | 215,641,000 |  |  |  |  |  |  |  |  |
Comprehensive income: |  |  |  |  |  |  |  |  |  |  |  |
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) |
Purchase of treasury stock | $ (575,380) |  |  |  |  |  |  | $ (575,380) |  |  | (575,380) |
Purchase of treasury stock (in shares) | (7,779,958) |  |  |  |  |  |  | (7,780,000) |  |  |  |
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: |  |  |  |  |  |  |  |  |  |  |  |
Net income |  | 99,834 |  |  |  |  | 879,874 |  |  |  | 879,874 | 53,374
Other comprehensive income (loss) | $ (29,627) |  |  |  |  |  |  |  |  | (29,817) | (29,817) | 190
Stock purchase shares issued |  |  | $ 1 |  | 23,902 |  |  |  |  |  | 23,903 |
Stock purchase shares issued (in shares) |  |  | 438,000 |  |  |  |  |  |  |  |  |
Stock-settled shares issued |  |  |  |  | (19,815) | $ (36,685) |  | $ 19,815 | $ 36,685 |  |  |
Stock-settled shares issued (in shares) |  |  | 4,000 | 218,000 |  |  |  | 276,000 | 513,000 |  |  |
Stock-based compensation expense |  |  |  |  | 37,970 |  |  |  |  |  | 37,970 |
Excess tax benefits from stock awards exercised |  |  |  |  | 13,251 |  |  |  |  |  | 13,251 |
Distributions to noncontrolling interests |  | (111,092) |  |  |  |  |  |  |  |  |  | (81,309)
Contributions from noncontrolling interests |  | 33,517 |  |  |  |  |  |  |  |  |  | 14,073
Sales and assumptions of additional noncontrolling interests |  | 28,874 |  |  | 3,423 |  |  |  |  |  | 3,423 | 2,585
Purchases from noncontrolling interests |  | (6,660) |  |  | (13,105) |  |  |  |  |  | (13,105) | (1,747)
Changes in fair value of noncontrolling interests |  | 65,855 |  |  | (65,855) |  |  |  |  |  | (65,855) |
Reclassifications and expirations of noncontrolling interests subject to puts |  | (1,136) |  |  |  |  |  |  |  |  |  | 1,136
Purchase of treasury stock | $ (1,072,377) |  |  |  |  |  |  | $ (1,072,377) |  |  | (1,072,377) |
Purchase of treasury stock (in shares) | (16,649,090) |  |  |  |  |  |  | (16,649,000) |  |  |  |
Retirement of treasury stock |  |  | $ (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 | $ 973,258 | $ 195 |  | $ 1,027,182 |  | $ 3,710,313 |  |  | $ (89,643) | $ 4,648,047 | $ 201,694
Ending Balance (in shares) at Dec. 31, 2016 | 194,554,491 |  | 194,554,000 |  |  |  |  |  |  |  |  |

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