v3.20.4

Debt (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2020
Debt Disclosure [Abstract] |
Schedule of Outstanding Debt | The following table summarizes the outstanding long-term debt as of December 31, 2020 and 2019:
| 2020 |  | 2019
| Maturities |  | Amount |  | Effective rate |  | Amount |  | Effective rate
Fixed-rate 4.125% senior unsecured notes | Jun, 2021 |  | — |  |  | 4.125 |  |  | 1,350 |  |  | 4.125 |
Fixed-rate 4.625% senior unsecured notes | Jun, 2022 |  | — |  |  | 4.625 |  |  | 400 |  |  | 4.625 |
Fixed-rate 3.875% senior unsecured notes | Sep, 2022 |  | 1,000 |  |  | 3.875 |  |  | 1,000 |  |  | 3.875 |
Fixed-rate 4.625% senior unsecured notes | Jun, 2023 |  | 900 |  |  | 4.625 |  |  | 900 |  |  | 4.625 |
Fixed-rate 4.875% senior unsecured notes | Mar, 2024 |  | 1,000 |  |  | 4.875 |  |  | 1,000 |  |  | 4.875 |
Fixed-rate 2.7% senior unsecured notes | May, 2025 |  | 500 |  |  | 2.700 |  |  | — |  |  | — |
Fixed-rate 5.35% senior unsecured notes | Mar, 2026 |  | 500 |  |  | 5.350 |  |  | 500 |  |  | 5.350 |
Fixed-rate 3.875% senior unsecured notes | Jun, 2026 |  | 750 |  |  | 3.875 |  |  | 750 |  |  | 3.875 |
Fixed-rate 3.15% senior unsecured notes | May, 2027 |  | 500 |  |  | 3.150 |  |  | — |  |  | — |
Fixed-rate 5.55% senior unsecured notes | Dec, 2028 |  | 500 |  |  | 5.550 |  |  | 500 |  |  | 5.550 |
Fixed-rate 4.3% senior unsecured notes | Jun, 2029 |  | 1,000 |  |  | 4.300 |  |  | 1,000 |  |  | 4.300 |
Fixed-rate 3.4% senior unsecured notes | May, 2030 |  | 1,000 |  |  | 3.400 |  |  | — |  |  | — |
Floating-rate revolving credit facility (RCF) | Jun, 2024 |  | — |  |  | — |  |  | — |  |  | — |
Total principal |  |  | 7,650 |  |  |  |  | 7,400 |  |  |
Unamortized discounts, premiums and debt issuance costs |  |  | (41) |  |  |  |  | (35) |  |  |
Total debt, including unamortized discounts, premiums, debt issuance costs and fair value adjustments |  |  | 7,609 |  |  |  |  | 7,365 |  |  |
Current portion of long-term debt |  |  | — |  |  |  |  | — |  |  |
Long-term debt |  |  | 7,609 |  |  |  |  | 7,365 |  |  |
Schedule of Long-Term Debt |
| Range of interest rates |  | Average rate of interest |  | Principal amount outstanding 2020 |  | Due in 2021 |  | Due after 2021 |  | Due after 2025 |  | Average remaining term (in years) |  | Principal amount outstanding 2019
USD notes | 2.7%-5.6% |  | 4.2 | % |  | 7,650 |  |  | — |  |  | 7,650 |  |  | 4,250 |  |  | 5.3 |  | 7,400 |
Revolving Credit Facility (1) | — | % |  | — | % |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Bank borrowings | — | % |  | — | % |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
|  |  | 4.2 | % |  | 7,650 |  |  | — |  |  | 7,650 |  |  | 4,250 |  |  | 5.3 |  | 7,400 |
(1)We do not have any borrowings under the $1,500 million Revolving Credit Facility as of December 31, 2020 and 2019.
Principal Amounts of Long-Term Debt | As of December 31, 2020, the following principal amounts of long-term debt are due in the next 5 years:
2021 | — |
2022 | 1,000 |
2023 | 900 |
2024 | 1,000 |
2025 | 500 |
Due after 5 years | 4,250 |
| 7,650 |

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