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Consolidated Statements of Equity - USD ($) $ in Thousands | Total | Class A Common Stock [Member] | Additional Paid-In Capital [Member] | Accumulated Earnings [Member] | Minimum Pension Liability [Member] | Foreign Currency Translation and Other [Member] | Non-controlling Interests [Member]
--- | --- | --- | --- | --- | --- | --- | ---
Beginning balance at Dec. 31, 2015 | $ 2,759,070 | $ 3,342 | $ 1,106,758 | $ 2,088,227 | $ (101,921) | $ (383,754) | $ 46,418
Beginning balance (in shares) at Dec. 31, 2015 | 334,230,496 |  |  |  |  |  |
Adoption of Accounting Standards Update, net of tax | Adoption of New Revenue Recognition Guidance, Accounting Standards Update 2014-09 [Member] | $ 87,885 |  |  | 87,885 |  |  |
Adoption of Accounting Standards Update, net of tax | Accounting Standards Update 2016-09 [Member] | 1,681 |  | 4,975 | (3,294) |  |  |
Net income (As Adjusted) | 585,170 |  |  | 573,079 |  |  | 12,091
Pension liability adjustments, net of tax | (63,749) |  |  |  | (63,749) |  |
Stock options exercised | $ 915 | 1 | 914 |  |  |  |
Stock options exercised (in shares) | 89,727 |  |  |  |  |  |
Restricted stock awards vesting |  | 30 | (30) |  |  |  |
Restricted stock awards vesting (in shares) | 2,955,142 |  |  |  |  |  |
Compensation expense for equity awards | $ 63,484 |  | 63,484 |  |  |  |
Units repurchased for payment of taxes on equity awards | $ (27,426) |  | (27,426) |  |  |  |
Repurchase of common stock (in Shares) | 0 |  |  |  |  |  |
Amounts reclassified from accumulated other comprehensive loss to interest expense, net of tax | $ 6,839 |  |  |  |  | 6,839 |
Unrealized (losses) gains on interest rate swaps, net of tax | (1,431) |  |  |  |  | (1,431) |
Unrealized holding gains (losses) on available for sale debt securities, net of tax | 384 |  |  |  |  | 384 |
Foreign currency translation (loss) gain (As Adjusted) | (235,614) |  |  |  |  | (235,631) | 17
Contributions from non-controlling interests | 2,272 |  |  |  |  |  | 2,272
Distributions to non-controlling interests | (19,133) |  |  |  |  |  | (19,133)
Other | $ (14,447) |  | (3,449) |  |  | (12,091) | 1,093
Other (in shares) | 4,084 |  |  |  |  |  |
Ending balance at Dec. 31, 2016 | $ 3,145,900 | 3,373 | 1,145,226 | 2,745,897 | (165,670) | (625,684) | 42,758
Ending balance (in shares) at Dec. 31, 2016 | 337,279,449 |  |  |  |  |  |
Net income (As Adjusted) | $ 703,576 |  |  | 697,109 |  |  | 6,467
Pension liability adjustments, net of tax | 12,701 |  |  |  | 12,701 |  |
Non-cash issuance of common stock related to acquisition | $ 11,693 | 5 | 11,688 |  |  |  |
Non-cash issuance of common stock related to acquisition (in shares) | 495,828 |  |  |  |  |  |
Restricted stock awards vesting |  | 17 | (17) |  |  |  |
Restricted stock awards vesting (in shares) | 1,660,269 |  |  |  |  |  |
Compensation expense for equity awards | $ 93,087 |  | 93,087 |  |  |  |
Units repurchased for payment of taxes on equity awards | $ (29,549) |  | (29,549) |  |  |  |
Repurchase of common stock (in Shares) | 0 |  |  |  |  |  |
Amounts reclassified from accumulated other comprehensive loss to interest expense, net of tax | $ 4,964 |  |  |  |  | 4,964 |
Unrealized (losses) gains on interest rate swaps, net of tax | 585 |  |  |  |  | 585 |
Unrealized holding gains (losses) on available for sale debt securities, net of tax | 2,737 |  |  |  |  | 2,737 |
Foreign currency translation (loss) gain (As Adjusted) | 218,001 |  |  |  |  | 217,589 | 412
Contributions from non-controlling interests | 5,301 |  |  |  |  |  | 5,301
Distributions to non-controlling interests | (8,715) |  |  |  |  |  | (8,715)
Acquisition of non- controlling interests | 12,671 |  |  |  |  |  | 12,671
Other | $ 1,662 |  | 73 | 1 |  | 364 | 1,224
Other (in shares) | 23,592 |  |  |  |  |  |
Ending balance at Dec. 31, 2017 | $ 4,174,614 | 3,395 | 1,220,508 | 3,443,007 | (152,969) | (399,445) | 60,118
Ending balance (in shares) at Dec. 31, 2017 | 339,459,138 |  |  |  |  |  |
Adoption of Accounting Standards Update, net of tax | Accounting Standards Update 2016-01 [Member] | $ (3,964) |  |  | 3,964 |  | (3,964) |
Net income (As Adjusted) | 1,065,948 |  |  | 1,063,219 |  |  | 2,729
Pension liability adjustments, net of tax | $ 1,315 |  |  |  | 1,315 |  |
Restricted stock awards vesting |  | 14 | (14) |  |  |  |
Restricted stock awards vesting (in shares) | 1,424,462 |  |  |  |  |  |
Compensation expense for equity awards | $ 128,171 |  | 128,171 |  |  |  |
Reclassification of stock incentive plan award from an equity award to a liability award | (9,074) |  | (9,074) |  |  |  |
Units repurchased for payment of taxes on equity awards | (29,386) |  | (29,386) |  |  |  |
Repurchase of common stock | $ (161,034) | (40) | (160,994) |  |  |  |
Repurchase of common stock (in Shares) | (3,980,656) |  |  |  |  |  |
Amounts reclassified from accumulated other comprehensive loss to interest expense, net of tax | $ 2,439 |  |  |  |  | 2,439 |
Unrealized (losses) gains on interest rate swaps, net of tax | 708 |  |  |  |  | 708 |
Unrealized holding gains (losses) on available for sale debt securities, net of tax | (971) |  |  |  |  | (971) |
Foreign currency translation (loss) gain (As Adjusted) | (161,384) |  |  |  |  | (160,312) | (1,072)
Contributions from non-controlling interests | 25,355 |  |  |  |  |  | 25,355
Distributions to non-controlling interests | (13,413) |  |  |  |  |  | (13,413)
Other | $ (13,386) |  | (198) | (5,506) | 3,747 | (8,817) | (2,612)
Other (in shares) | 9,839 |  |  |  |  |  |
Ending balance at Dec. 31, 2018 | $ 5,009,902 | $ 3,369 | $ 1,149,013 | $ 4,504,684 | $ (147,907) | $ (570,362) | $ 71,105
Ending balance (in shares) at Dec. 31, 2018 | 336,912,783 |  |  |  |  |  |

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