Revenue (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Disaggregation of Revenue [Line Items]
Total net revenues	$ 778,445,000	$ 767,170,000	$ 2,366,322,000	$ 2,427,044,000
Short-term contract assets	51,900,000		51,900,000		$ 37,300,000
Long-term contract assets	44,800,000		44,800,000		41,700,000
Current portion of deferred revenues	1,464,176,000		1,464,176,000		1,510,216,000
Long-term portion of deferred revenues	314,272,000		314,272,000		392,360,000
Deferred revenue recognized	553,700,000		1,260,000,000
Impairment charges related to contract assets	0	0	0	0
Short-term contract acquisition costs	76,000,000		76,000,000		71,500,000
Long-term contract acquisition costs	131,600,000		131,600,000		$ 124,700,000
Impairment of capitalized costs	0	0	0	0
Transferred at Point in Time [Member]
Disaggregation of Revenue [Line Items]
Total net revenues	86,366,000	155,087,000	371,000,000	630,193,000
Transferred over Time [Member]
Disaggregation of Revenue [Line Items]
Total net revenues	692,079,000	612,083,000	1,995,322,000	1,796,851,000
Sales, Marketing and Services Expense [Member]
Disaggregation of Revenue [Line Items]
Amortization of capitalized contract acquisition costs	$ 19,300,000	$ 14,700,000	$ 56,500,000	$ 41,600,000
Minimum [Member]
Disaggregation of Revenue [Line Items]
Average customer life			2 years
Maximum [Member]
Disaggregation of Revenue [Line Items]
Average customer life			7 years
Customer Relationships [Member] | Minimum [Member]
Disaggregation of Revenue [Line Items]
Average customer life			3 years
Customer Relationships [Member] | Maximum [Member]
Disaggregation of Revenue [Line Items]
Average customer life			5 years