v3.20.4
Debt (Long-Term Debt - Scheduled Repayments) (Details)
$ in Millions
12 Months Ended
Dec. 31, 2020
USD ($)
Debt repayments  
2021 $ 3,418
2022 5,951
2023 7,779
2024 7,849
2025 6,389
Thereafter $ 134,268
Weighted-average interest rate  
2021 3.80%
2022 3.30%
2023 3.40%
2024 3.30%
2025 3.90%
Thereafter 4.20%