Stockholders' Equity - Schedule of Stockholders' Equity (Details) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Jan. 01, 2019
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning of period	$ 2,804,151,000	$ 2,050,946,000
Adoption of accounting standards			$ 28,944,000
Balance, adjusted			2,079,890,000
Non-cash stock compensation	1,984,000	3,149,000
Conversion of Class B shares to Class A shares	0	0
Treasury Stock, Value, Acquired, Cost Method	(29,203,000)
Exercise of stock options and vesting of restricted stock, net of shares withheld to satisfy tax withholding	25,614,000	(1,420,000)
Distributions to noncontrolling interest holders		(625,000)
Reclassification of redeemable noncontrolling interests and equity	38,000	224,000
Net income	98,316,000	194,265,000
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	(330,116,000)	49,551,000
Unrealized gain on derivatives, net of tax of $0	0	2,609,000
Minimum pension liability adjustment, net of tax of $0	(932,000)	0
Balance, end of period	2,569,808,000	2,327,906,000
Foreign currency translation adjustment, tax	0	0
Pension adjustment, tax	0	0
Additional paid-in capital
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning of period	3,724,636,000	3,703,796,000
Balance, adjusted			3,703,796,000
Non-cash stock compensation	1,984,000	3,149,000
Exercise of stock options and vesting of restricted stock, net of shares withheld to satisfy tax withholding	25,610,000	(1,421,000)
Balance, end of period	3,752,186,000	3,705,787,000
(Accumulated deficit) retained earnings
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning of period	436,509,000	(530,919,000)
Adoption of accounting standards			28,944,000
Balance, adjusted			(501,975,000)
Net income	99,615,000	191,243,000
Balance, end of period	536,124,000	(310,732,000)
Accumulated other comprehensive (loss) income
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning of period	(1,073,981,000)	(1,112,695,000)
Balance, adjusted			(1,112,695,000)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	(330,875,000)	49,521,000
Unrealized gain on derivatives, net of tax of $0		2,609,000
Minimum pension liability adjustment, net of tax of $0	(932,000)
Balance, end of period	(1,405,788,000)	(1,060,565,000)
Treasury stock at cost
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning of period	(271,106,000)
Treasury Stock, Value, Acquired, Cost Method	(29,203,000)
Balance, end of period	(300,309,000)
Non-controlling interests
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning of period	(12,812,000)	(10,133,000)
Balance, adjusted			(10,133,000)
Distributions to noncontrolling interest holders		(625,000)
Reclassification of redeemable noncontrolling interests and equity	38,000	224,000
Net income	(1,299,000)	3,022,000
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	759,000	30,000
Balance, end of period	$ (13,314,000)	$ (7,482,000)
Class A Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance of shares outstanding, beginning of period (in shares)	119,575,000
Balance of shares outstanding, end of period (in shares)	119,075,000
Class A Common Stock | Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance of shares outstanding, beginning of period (in shares)	119,575,000	107,450,000
Balance, beginning of period	$ 542,000	$ 430,000
Balance, adjusted			430,000
Conversion of Class B shares to Class A shares (in shares)	18,000	8,000
Purchases of treasury stock at cost (in shares)	1,619,000
Vesting of restricted stock, net of shares withheld to satisfy tax withholding (in shares)	1,101,000	325,000
Exercise of stock options and vesting of restricted stock, net of shares withheld to satisfy tax withholding	$ 4,000	$ 1,000
Balance of shares outstanding, end of period (in shares)	119,075,000	107,783,000
Balance, end of period	$ 546,000	$ 431,000
Class B Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance of shares outstanding, beginning of period (in shares)	90,831,000
Balance of shares outstanding, end of period (in shares)	90,813,000
Class B Common Stock | Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance of shares outstanding, beginning of period (in shares)	90,831,000	116,865,000
Balance, beginning of period	$ 363,000	$ 467,000
Balance, adjusted			$ 467,000
Conversion of Class B shares to Class A shares (in shares)	(18,000)	(8,000)
Vesting of restricted stock, net of shares withheld to satisfy tax withholding (in shares)		0
Balance of shares outstanding, end of period (in shares)	90,813,000	116,857,000
Balance, end of period	$ 363,000	$ 467,000
Redeemable noncontrolling interests and equity
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accretion of redeemable noncontrolling interests and equity	(44,000)	263,000
Redeemable noncontrolling interests and equity | Additional paid-in capital
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accretion of redeemable noncontrolling interests and equity	$ (44,000)	$ 263,000