Annual report pursuant to Section 13 and 15(d)

Debt - Interest Expense (Details)

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Debt - Interest Expense (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Debt Instrument [Line Items]      
Total interest cost $ 1,604 $ 1,773 $ 1,846
Capitalized interest (166) (248) (414)
Total interest expense, net of capitalized interest 1,438 1,525 1,432
Convertible Debt [Member]      
Debt Instrument [Line Items]      
Interest per contractual rate 36 152 256
Amortization of debt discount 10 45 40
Amortization of debt issuance costs 0 8 12
Total interest cost 46 205 308
Debt and Finance Leases Excluding Convertible Debt [Member]      
Debt Instrument [Line Items]      
Total interest cost $ 1,558 $ 1,568 $ 1,538