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Debt (Details) - USD ($)
$ in Millions
9 Months Ended
Sep. 30, 2020
Oct. 23, 2020
Apr. 02, 2020
6.25% Senior Notes      
Debt Instrument [Line Items]      
Interest rate 6.25%    
Principal amount $ 500    
Cash proceeds 483    
Debt issuance cost 17    
Receivables securitization agreement      
Debt Instrument [Line Items]      
Amount borrowed     $ 125
Assets pledged as collateral $ 222    
Receivables securitization agreement | Subsequent event      
Debt Instrument [Line Items]      
Maximum borrowing capacity   $ 300