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Guarantor Condensed Consolidating Financial Information - Condensed Consolidating Statements of Cash Flows (Details) (Parenthetical) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Condensed Cash Flow Statements, Captions [Line Items]      
Proceeds from accounts receivable securitization facility $ 128 $ 0 $ 0
Securitization Facility [Member]      
Condensed Cash Flow Statements, Captions [Line Items]      
Proceeds from accounts receivable securitization facility 1,034    
Securitization Facility [Member] | Guarantor Subsidiaries [Member] | Special Purpose Entity [Member]      
Condensed Cash Flow Statements, Captions [Line Items]      
Proceeds from accounts receivable securitization facility $ 1,144