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Long-Term Debt Long-Term Debt - Schedule of Secured Assets and Unused Available Credit and Fees (Details) - Revolving Credit Facility [Member] - USD ($)
$ in Millions
Jun. 16, 2018
Feb. 24, 2018
Debt Instrument [Line Items]    
Outstanding letters of credit $ 57 $ 57
Letters of credit fees (as a percentage) 1.375% 1.375%
Unused available credit $ 748 $ 816
Unused facility fees 0.25% 0.25%
Inventories    
Debt Instrument [Line Items]    
Collateral amount pledged $ 1,306 $ 1,176
Accounts Receivable    
Debt Instrument [Line Items]    
Collateral amount pledged 436 410
Cash and Cash Equivalents    
Debt Instrument [Line Items]    
Collateral amount pledged $ 20 $ 20