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Debt - Credit Facilities, Borrowings and Repayments and Letters of Credit (Details) - USD ($)
$ in Millions
1 Months Ended 9 Months Ended
Mar. 01, 2022
Aug. 31, 2022
Sep. 30, 2022
Sep. 30, 2021
Dec. 31, 2021
Debt          
Repayments of senior notes     $ 750    
Outstanding letters of credit     58   $ 98
3.65% senior notes due June 2022 | Senior notes          
Debt          
Stated percentage 3.65%       3.65%
Repayments of senior notes $ 750        
Senior secured hedged inventory facility          
Debt          
Number of years maturity date was extended   1 year      
Senior unsecured revolving credit facility          
Debt          
Number of years maturity date was extended   1 year      
Credit facilities and commercial paper program          
Debt          
Total borrowings     19,300 $ 31,200  
Total repayments     $ 19,300 $ 31,900