Annual report pursuant to Section 13 and 15(d)

Consolidated Statements of Cash Flows - Balances per Consolidated Balance Sheets

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Consolidated Statements of Cash Flows - Balances per Consolidated Balance Sheets - USD ($)
$ in Millions
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Balances per Consolidated Balance Sheets:        
Cash and cash equivalents $ 981 $ 722    
Restricted cash 2,175 1,880    
Non-current restricted cash 0 11    
Total cash, cash equivalents and restricted cash $ 3,156 $ 2,613 $ 1,827 $ 1,736