Revenues - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Jan. 01, 2018
Revenue from Contract with Customer [Abstract]
Remaining performance obligation	$ 724,000,000	$ 489,000,000
Remaining performance obligation period of recognition	2 years
Capitalized Contract Cost [Line Items]
Capitalized contract, impairment loss	$ 0	0
Deferred revenue	459,000,000	382,000,000
Revenue recognized which was previously included in deferred revenue	219,000,000	181,000,000
Other long-term assets	126,000,000	87,000,000
Sales Commissions
Capitalized Contract Cost [Line Items]
Deferred commissions	21,000,000	15,000,000
Amortization expense related to commissions	11,000,000	10,000,000
ASU 2014-09 | Difference between Revenue Guidance in Effect before and after Topic 606
Capitalized Contract Cost [Line Items]
Other long-term assets			$ 12,000,000
Prepaid expenses and other current assets
Capitalized Contract Cost [Line Items]
Contract assets	$ 8,000,000	$ 5,000,000	$ 7,000,000