XML 81 R74.htm IDEA: XBRL DOCUMENT v3.21.2
Revenue from Contracts with Customers - Receivables, Contract Assets and Contract Liabilities (Details) - USD ($)
$ in Millions
Jun. 30, 2021
Dec. 31, 2020
Revenue from Contract with Customer [Abstract]    
Accounts receivable, net $ 122 $ 125
Current contract liabilities (deferred revenues) (24) (18)
Non-current contract liabilities (deferred revenues) $ (7) $ (13)