Annual report pursuant to Section 13 and 15(d)

Revenues from Contracts with Customers - Schedule of Deferred Revenue Reconciliation (Details)

v3.20.4
Revenues from Contracts with Customers - Schedule of Deferred Revenue Reconciliation (Details)
$ in Millions
12 Months Ended
Dec. 31, 2020
USD ($)
Change In Contract With Customer, Liability [Roll Forward]  
Deferred revenues, beginning of period $ 155
Cash received but not yet recognized 137
Revenue recognized from prior period deferral (155)
Deferred revenues, end of period $ 137