Annual report pursuant to Section 13 and 15(d)

Debt - Interest Expense (Details)

v3.20.4
Debt - Interest Expense (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Debt Instrument [Line Items]      
Total interest cost $ 1,773 $ 1,846 $ 1,678
Capitalized interest (248) (414) (803)
Total interest expense, net of capitalized interest 1,525 1,432 875
Convertible Debt [Member]      
Debt Instrument [Line Items]      
Interest per contractual rate 152 256 237
Amortization of debt discount 45 40 35
Amortization of debt issuance costs 8 12 9
Total interest cost 205 308 281
Debt and Finance Leases Excluding Convertible Debt [Member]      
Debt Instrument [Line Items]      
Total interest cost $ 1,568 $ 1,538 $ 1,397