Revenue (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Disaggregation of Revenue [Line Items]
Total net revenues	$ 767,170,000	$ 732,901,000	$ 2,427,044,000	$ 2,200,741,000
Short-term contract assets	22,100,000		22,100,000		$ 12,200,000
Long-term contract assets	29,500,000		29,500,000		20,500,000
Current portion of deferred revenues	1,313,883,000		1,313,883,000		1,352,333,000
Long-term portion of deferred revenues	378,421,000		378,421,000		443,458,000
Deferred revenue recognized	512,400,000		1,130,000,000
Impairment charges related to contract assets	0	0	0	0
Short-term contract acquisition costs	60,500,000		60,500,000		50,400,000
Long-term contract acquisition costs	99,800,000		99,800,000		$ 81,000,000.0
Impairment of capitalized costs	0	0	0	0
Transferred at Point in Time [Member]
Disaggregation of Revenue [Line Items]
Total net revenues	155,087,000	159,326,000	630,193,000	500,450,000
Transferred over Time [Member]
Disaggregation of Revenue [Line Items]
Total net revenues	612,083,000	573,575,000	$ 1,796,851,000	1,700,291,000
Minimum [Member]
Disaggregation of Revenue [Line Items]
Average customer life			3 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
Sales, Marketing and Services Expense [Member]
Disaggregation of Revenue [Line Items]
Amortization of capitalized contract acquisition costs	$ 14,700,000	$ 11,400,000	$ 41,600,000	$ 33,000,000.0