Quarterly report pursuant to Section 13 or 15(d)

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

v3.10.0.1
Revenues from Contracts with Customers - Schedule of Deferred Revenue Reconciliation (Details)
$ in Millions
6 Months Ended
Jun. 30, 2018
USD ($)
Change In Contract With Customer, Liability [Roll Forward]  
Deferred revenues, beginning of period $ 111
Cash received but not yet recognized 98
Revenue recognized from prior period deferral (111)
Deferred revenues, end of period $ 98