Quarterly report pursuant to Section 13 or 15(d)

Consolidated Statements of Cash Flows - Balances per Consolidated Balance Sheet

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Consolidated Statements of Cash Flows - Balances per Consolidated Balance Sheet - USD ($)
$ in Millions
Sep. 30, 2018
Dec. 31, 2017
Sep. 30, 2017
Dec. 31, 2016
Balances per Consolidated Balance Sheet:        
Cash and cash equivalents $ 989 $ 722    
Restricted cash 1,943 1,880    
Total cash, cash equivalents and restricted cash $ 2,932 $ 2,613 $ 2,575 $ 1,827