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Long-Term Debt - Schedule of Long-Term Debt (Detail) - USD ($)
$ in Millions
Mar. 31, 2022
Dec. 31, 2021
Debt Instrument [Line Items]    
Senior secured debt $ 25,067 $ 21,875
Debt issuance costs and discounts (323) (248)
Total debt (average life of 9.5 years, rates averaging 4.9%) 37,696 34,579
Less amounts due within one year 1,486 237
Long-term debt 36,210 34,342
Senior Secured Asset-Based Revolving Credit Facility [Member]    
Debt Instrument [Line Items]    
Long-term line of credit 0 2,780
Senior Secured Revolving Credit Facility [Member]    
Debt Instrument [Line Items]    
Long-term line of credit 0 0
Senior Secured Term Loan Facilities [Member]    
Debt Instrument [Line Items]    
Senior secured debt 1,940 1,960
Senior Secured Notes [Member]    
Debt Instrument [Line Items]    
Senior secured debt 22,200 16,200
Other Senior Secured Debt [Member]    
Debt Instrument [Line Items]    
Other senior secured debt 927 935
Senior Unsecured Notes [Member]    
Debt Instrument [Line Items]    
Senior unsecured notes $ 12,952 $ 12,952