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CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Thousands | Total | Total | Total Cumulative Effect, Period of Adoption, Adjustment | Non-controlling interests subject to put provisions | Non-controlling interests subject to put provisions Cumulative Effect, Period of Adoption, Adjustment | Common stock | Additional paid-in capital | Retained earnings | Retained earnings Cumulative Effect, Period of Adoption, Adjustment | Treasury stock | Accumulated other comprehensive income (loss) | Non-controlling interests not subject to put provisions | Non-controlling interests not subject to put provisions Cumulative Effect, Period of Adoption, Adjustment
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Beginning Balance (in shares) at Dec. 31, 2018 |  |  |  |  |  | 166,387,000 |  |  |  | 0 |  |  |
Beginning balance at Dec. 31, 2018 |  | $ 3,703,442 | $ 39,876 |  | $ (38) | $ 166 | $ 995,006 | $ 2,743,194 | $ 39,876 | $ 0 | $ (34,924) | $ 204,956 | $ (6)
Temporary equity, beginning balance at Dec. 31, 2018 |  |  |  | $ 1,124,641 |  |  |  |  |  |  |  |  |
Increase (Decrease) in Temporary Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |
Net income |  |  |  | 143,413 |  |  |  |  |  |  |  |  |
Distributions |  |  |  | (155,011) |  |  |  |  |  |  |  |  |
Contributions |  |  |  | 35,572 |  |  |  |  |  |  |  |  |
Acquisitions and divestitures |  |  |  | (6,332) |  |  |  |  |  |  |  |  |
Partial purchases |  |  |  | (11,394) |  |  |  |  |  |  |  |  |
Fair value remeasurements |  |  |  | 49,525 |  |  |  |  |  |  |  |  |
Temporary equity, ending balance at Dec. 31, 2019 |  |  |  | 1,180,376 |  |  |  |  |  |  |  |  |
Comprehensive income: |  |  |  |  |  |  |  |  |  |  |  |  |
Net income |  | 810,981 |  |  |  |  |  | 810,981 |  |  |  | 66,900 |
Other comprehensive income | $ (12,574) | (12,574) |  |  |  |  |  |  |  |  | (12,574) |  |
Stock purchase shares issued (in shares) |  |  |  |  |  | 315,000 |  |  |  |  |  |  |
Stock purchase plan |  | 16,570 |  |  |  | $ 1 | 16,569 |  |  |  |  |  |
Stock award payment plan (in shares) |  |  |  |  |  | 161,000 |  |  |  |  |  |  |
Stock award plan |  | (3,290) |  |  |  | $ 0 | (3,290) |  |  |  |  |  |
Stock-settled stock-based compensation expense |  | 67,549 |  |  |  |  | 67,549 |  |  |  |  |  |
Changes in noncontrolling interest from: |  |  |  |  |  |  |  |  |  |  |  |  |
Distributions |  |  |  |  |  |  |  |  |  |  |  | (78,112) |
Contributions |  |  |  |  |  |  |  |  |  |  |  | 21,745 |
Acquisitions and divestitures |  |  |  |  |  |  |  |  |  |  |  | (10,170) |
Partial purchases |  | (37,145) |  |  |  |  | (37,145) |  |  |  |  | (19,480) |
Fair value remeasurements |  | (49,525) |  |  |  |  | (49,525) |  |  |  |  |  |
Purchase of treasury stock (in shares) | (41,020,000) |  |  |  |  |  |  |  |  | (41,020,000) |  |  |
Purchase of treasury stock | $ (2,402,475) | (2,402,475) |  |  |  |  |  |  |  | $ (2,402,475) |  |  |
Retirement of treasury stock (in shares) |  |  |  |  |  | (41,020,000) |  |  |  | 41,020,000 |  |  |
Retirement of treasury stock |  | 0 |  |  |  | $ (41) | (240,121) | (2,162,313) |  | $ 2,402,475 |  |  |
Ending balance at Dec. 31, 2019 |  | 2,133,409 |  |  |  | $ 126 | 749,043 | 1,431,738 |  | $ 0 | (47,498) | 185,833 |
Ending Balance (in shares) at Dec. 31, 2019 |  |  |  |  |  | 125,843,000 |  |  |  | 0 |  |  |
Increase (Decrease) in Temporary Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |
Net income |  |  |  | 141,879 |  |  |  |  |  |  |  |  |
Distributions |  |  |  | (163,175) |  |  |  |  |  |  |  |  |
Contributions |  |  |  | 30,154 |  |  |  |  |  |  |  |  |
Acquisitions and divestitures |  |  |  | (3,215) |  |  |  |  |  |  |  |  |
Partial purchases |  |  |  | (7,771) |  |  |  |  |  |  |  |  |
Fair value remeasurements |  |  |  | 151,780 |  |  |  |  |  |  |  |  |
Temporary equity, ending balance at Dec. 31, 2020 |  |  |  | 1,330,028 |  |  |  |  |  |  |  |  |
Comprehensive income: |  |  |  |  |  |  |  |  |  |  |  |  |
Net income |  | 773,642 |  |  |  |  |  | 773,642 |  |  |  | 79,156 |
Other comprehensive income | $ (18,656) | (18,656) |  |  |  |  |  |  |  |  | (18,656) |  |
Stock purchase shares issued (in shares) |  |  |  |  |  | 222,000 |  |  |  |  |  |  |
Stock purchase plan |  | 17,148 |  |  |  | $ 0 | 17,148 |  |  |  |  |  |
Stock award payment plan (in shares) |  |  |  |  |  | 345,000 |  |  |  |  |  |  |
Stock award plan |  | (17,801) |  |  |  | $ 0 | (17,801) |  |  |  |  |  |
Stock-settled stock-based compensation expense |  | 90,007 |  |  |  |  | 90,007 |  |  |  |  |  |
Changes in noncontrolling interest from: |  |  |  |  |  |  |  |  |  |  |  |  |
Distributions |  |  |  |  |  |  |  |  |  |  |  | (89,943) |
Contributions |  |  |  |  |  |  |  |  |  |  |  | 12,812 |
Acquisitions and divestitures |  |  |  |  |  |  |  |  |  |  |  | (248) |
Partial purchases |  |  |  |  |  |  |  |  |  |  |  | (4,424) |
Partial purchases |  | 4,364 |  |  |  |  | 4,364 |  |  |  |  |  |
Fair value remeasurements |  | (151,780) |  |  |  |  | (151,780) |  |  |  |  |  |
Purchase of treasury stock (in shares) | (16,477,000) |  |  |  |  |  |  |  |  | (16,477,000) |  |  |
Purchase of treasury stock | $ (1,446,767) | (1,446,767) |  |  |  |  |  |  |  | $ (1,446,767) |  |  |
Retirement of treasury stock (in shares) |  |  |  |  |  | (16,477,000) |  |  |  | 16,477,000 |  |  |
Retirement of treasury stock |  | 0 |  |  |  | $ (16) | (93,908) | (1,352,843) |  | $ 1,446,767 |  |  |
Ending balance at Dec. 31, 2020 | $ 1,566,752 | 1,383,566 |  |  |  | $ 110 | 597,073 | 852,537 |  | $ 0 | (66,154) | 183,186 |
Ending Balance (in shares) at Dec. 31, 2020 | 109,933,000 |  |  |  |  | 109,933,000 |  |  |  | 0 |  |  |
Increase (Decrease) in Temporary Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |
Net income |  |  |  | 160,359 |  |  |  |  |  |  |  |  |
Distributions |  |  |  | (159,259) |  |  |  |  |  |  |  |  |
Contributions |  |  |  | 22,672 |  |  |  |  |  |  |  |  |
Acquisitions and divestitures |  |  |  | 5,903 |  |  |  |  |  |  |  |  |
Partial purchases |  |  |  | (588) |  |  |  |  |  |  |  |  |
Fair value remeasurements |  |  |  | 75,717 |  |  |  |  |  |  |  |  |
Temporary equity, ending balance at Dec. 31, 2021 |  |  |  | $ 1,434,832 |  |  |  |  |  |  |  |  |
Comprehensive income: |  |  |  |  |  |  |  |  |  |  |  |  |
Net income |  | 978,450 |  |  |  |  |  | 978,450 |  |  |  | 72,953 |
Other comprehensive income | $ (73,093) | (73,093) |  |  |  |  |  |  |  |  | (73,093) |  |
Stock purchase shares issued (in shares) |  |  |  |  |  | 203,000 |  |  |  |  |  |  |
Stock purchase plan |  | 19,626 |  |  |  | $ 0 | 19,626 |  |  |  |  |  |
Stock award payment plan (in shares) |  |  |  |  |  | 1,030,000 |  |  |  |  |  |  |
Stock award plan |  | (80,641) |  |  |  | $ 1 | (80,642) |  |  |  |  |  |
Stock-settled stock-based compensation expense |  | 100,714 |  |  |  |  | 100,714 |  |  |  |  |  |
Changes in noncontrolling interest from: |  |  |  |  |  |  |  |  |  |  |  |  |
Distributions |  |  |  |  |  |  |  |  |  |  |  | (84,774) |
Contributions |  |  |  |  |  |  |  |  |  |  |  | 9,082 |
Acquisitions and divestitures |  | (264) |  |  |  |  | (264) |  |  |  |  |  |
Acquisitions and divestitures |  |  |  |  |  |  |  |  |  |  |  | 1,250 |
Partial purchases |  | (13,853) |  |  |  |  | (13,853) |  |  |  |  | (1,057) |
Fair value remeasurements |  | (75,717) |  |  |  |  | (75,717) |  |  |  |  |  |
Purchase of treasury stock (in shares) | (13,877,000) |  |  |  |  |  |  |  |  | (13,877,000) |  |  |
Purchase of treasury stock | $ (1,546,016) | (1,546,016) |  |  |  |  |  |  |  | $ (1,546,016) |  |  |
Retirement of treasury stock (in shares) |  |  |  |  |  | (13,877,000) |  |  |  | 13,877,000 |  |  |
Retirement of treasury stock |  | 0 |  |  |  | $ (14) | (69,352) | (1,476,650) |  | $ 1,546,016 |  |  |
Deferred taxes from partnership buyouts |  | 62,736 |  |  |  |  | 62,736 |  |  |  |  |  |
Ending balance at Dec. 31, 2021 | $ 936,148 | $ 755,508 |  |  |  | $ 97 | $ 540,321 | $ 354,337 |  | $ 0 | $ (139,247) | $ 180,640 |
Ending Balance (in shares) at Dec. 31, 2021 | 97,289,000 |  |  |  |  | 97,289,000 |  |  |  | 0 |  |  |

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