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Label Element Value
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents $ 1,668,000,000
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents 831,000,000
Equity [Member] | Difference between Revenue Guidance in Effect before and after Topic 606 [Member]  
Stockholders' Equity Attributable to Parent us-gaap_StockholdersEquity $ (2,000,000)