Business and Significant Accounting Policies - Additional Information (Details) $ in Thousands		12 Months Ended
	Apr. 01, 2018 USD ($)	Dec. 31, 2020 USD ($) segment company country	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Jan. 01, 2018 USD ($)	Dec. 31, 2017 USD ($)
Business and Significant Accounting Policies [Line Items]
Number of enterprises served | company		14,000
Number of countries in which entity operates | country		100
Number of reportable segments | segment		3
Proceeds from the sale of an equity security		$ 0	$ 14,120	$ 0
Gain on sale of minority equity investment		0	9,120	0
Stockholders' equity attributable to parent		(1,090,428)	(938,593)	(850,757)		$ (983,465)
Income tax benefit		(59,388)	(42,449)	(58,665)
Depreciation expense		93,925	82,066	68,592
Net capitalized development costs for internal use software		58,200	55,700
Amortization of capitalized internal software development costs		28,900	20,000	13,200
Foreign currency transaction gain (loss)		12,500	(1,100)	9,200
Derivative instruments, gain (loss) recognized in income, net		(47,180)	873	(8,445)
Accounting Standards Update 2016-16
Business and Significant Accounting Policies [Line Items]
Income tax benefit		28,300	38,100	6,800
Foreign currency exchange contracts
Business and Significant Accounting Policies [Line Items]
Derivative instruments, gain (loss) recognized in income, net		(14,100)	(2,500)	(10,400)
Accumulated Other Comprehensive (Loss) Income, Net
Business and Significant Accounting Policies [Line Items]
Reclassification from AOCI to retained earnings, tax effect	$ 600
Stockholders' equity attributable to parent		99,228	77,938	39,867		(1,508)
Accumulated Earnings
Business and Significant Accounting Policies [Line Items]
Reclassification from AOCI to retained earnings, tax effect	$ 600
Stockholders' equity attributable to parent		$ (2,255,467)	$ (1,988,722)	$ (1,755,432)		(1,647,284)
Cumulative Effect, Period of Adoption, Adjustment | Accounting Standards Update 2016-16
Business and Significant Accounting Policies [Line Items]
Stockholders' equity attributable to parent					$ 13,700	13,717
Cumulative Effect, Period of Adoption, Adjustment | Accumulated Earnings | Accounting Standards Update 2016-16
Business and Significant Accounting Policies [Line Items]
Stockholders' equity attributable to parent						$ 13,717