Revenue (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Disaggregation of Revenue [Line Items]
Total net revenues	$ 775,766,000	$ 860,945,000
Short-term contract assets	37,100,000		$ 37,300,000
Long-term contract assets	43,100,000		41,700,000
Current portion of deferred revenues	1,479,894,000		1,510,216,000
Long-term portion of deferred revenues	363,626,000		392,360,000
Deferred revenue recognized	532,700,000
Impairment charges related to contract assets	0	0
Short-term contract acquisition costs	72,000,000.0		71,500,000
Long-term contract acquisition costs	130,400,000		$ 124,700,000
Impairment of capitalized costs	0	0
Transferred at Point in Time [Member]
Disaggregation of Revenue [Line Items]
Total net revenues	141,799,000	279,411,000
Transferred over Time [Member]
Disaggregation of Revenue [Line Items]
Total net revenues	$ 633,967,000	581,534,000
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
Sales, Marketing and Services Expense [Member]
Disaggregation of Revenue [Line Items]
Amortization of capitalized contract acquisition costs	$ 18,300,000	$ 13,100,000