Annual report pursuant to Section 13 and 15(d)

Supplemental Guarantor Information - Condensed Consolidating Cash Flows - Balances per Condensed Consolidating Balance Sheet (Details)

v3.19.3.a.u2
Supplemental Guarantor Information - Condensed Consolidating Cash Flows - Balances per Condensed Consolidating Balance Sheet (Details) - USD ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Sep. 30, 2018
Dec. 31, 2017
Dec. 31, 2016
Balances per Consolidated Balance Sheet:          
Cash and cash equivalents $ 1,781 $ 0      
Restricted cash 181 1,541      
Total cash, cash equivalents and restricted cash 1,962 1,541 $ 1,541 $ 1,589 $ 605
Parent Issuer [Member]          
Balances per Consolidated Balance Sheet:          
Cash and cash equivalents 1,778 0      
Restricted cash 0 779      
Total cash, cash equivalents and restricted cash 1,778 779 779 1,033 234
Guarantors [Member]          
Balances per Consolidated Balance Sheet:          
Cash and cash equivalents 3 0      
Restricted cash 0 6      
Total cash, cash equivalents and restricted cash 3 6 6 12 13
Non-Guarantors [Member]          
Balances per Consolidated Balance Sheet:          
Cash and cash equivalents 0 0      
Restricted cash 181 756      
Total cash, cash equivalents and restricted cash 181 756 756 544 358
Eliminations [Member]          
Balances per Consolidated Balance Sheet:          
Cash and cash equivalents 0 0      
Restricted cash 0 0      
Total cash, cash equivalents and restricted cash $ 0 $ 0 $ 0 $ 0 $ 0