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Derivative and Other Financial Instruments - Fair Value Hedge Carrying Amounts (Details) - Derivatives in fair value hedges - Designated as Hedging Instrument - USD ($)
$ in Millions
Sep. 30, 2021
Dec. 31, 2020
Cash and cash equivalents    
Derivative [Line Items]    
Carrying amount of hedged assets $ 25 $ 22
Receivables, net    
Derivative [Line Items]    
Carrying amount of hedged assets 15 11
Accrued liabilities    
Derivative [Line Items]    
Accounts payable $ 108 $ 100