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Debt - Schedule of Debt (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019
SHORT-TERM DEBT |  |
Short-term debt | $ 831 | $ 504
LONG-TERM DEBT |  |
Senior notes, net of unamortized discounts and debt issuance costs | 9,071 | 8,939
Noncurrent portion of other long-term debt | 311 | 248
Total long-term debt | 9,382 | 9,187
Total debt | 10,213 | 9,691
Other |  |
SHORT-TERM DEBT |  |
Short-term debt | 117 | 86
Commercial Paper | Line of Credit |  |
SHORT-TERM DEBT |  |
Short-term notes and borrowings | $ 547 | $ 93
Weighted average interest rate, short-term (as a percent) | 0.70% | 2.20%
Senior secured hedged inventory facility | Line of Credit |  |
SHORT-TERM DEBT |  |
Short-term notes and borrowings | $ 167 | $ 325
Weighted average interest rate, short-term (as a percent) | 1.20% | 2.70%
Senior notes |  |
LONG-TERM DEBT |  |
Unamortized discounts and debt issuance costs | $ (62) | $ (61)
Senior notes, net of unamortized discounts and debt issuance costs | 9,071 | 8,939
Senior notes repurchase amount | 17 |
Debt instrument face value | 9,100 | 9,000
Senior notes | Other income/(expense), net |  |
LONG-TERM DEBT |  |
Gain on repurchase of senior notes | 3 |
Senior notes | Level 2 |  |
LONG-TERM DEBT |  |
Debt instrument fair value | 9,900 | 9,300
Senior notes | 5.00% senior notes due February 2021 |  |
LONG-TERM DEBT |  |
Long-term debt, before deducting unamortized discounts and debt issuance costs | $ 0 | 600
Debt instrument, interest rate (as a percent) | 5.00% |
Senior notes | 3.65% senior notes due June 2022 |  |
LONG-TERM DEBT |  |
Long-term debt, before deducting unamortized discounts and debt issuance costs | $ 750 | 750
Debt instrument, interest rate (as a percent) | 3.65% |
Senior notes | 2.85% senior notes due January 2023 |  |
LONG-TERM DEBT |  |
Long-term debt, before deducting unamortized discounts and debt issuance costs | $ 400 | 400
Debt instrument, interest rate (as a percent) | 2.85% |
Senior notes | 3.85% senior notes due October 2023 |  |
LONG-TERM DEBT |  |
Long-term debt, before deducting unamortized discounts and debt issuance costs | $ 700 | 700
Debt instrument, interest rate (as a percent) | 3.85% |
Senior notes | 3.60% senior notes due November 2024 |  |
LONG-TERM DEBT |  |
Long-term debt, before deducting unamortized discounts and debt issuance costs | $ 750 | 750
Debt instrument, interest rate (as a percent) | 3.60% |
Senior notes | 4.65% senior notes due October 2025 |  |
LONG-TERM DEBT |  |
Long-term debt, before deducting unamortized discounts and debt issuance costs | $ 1,000 | 1,000
Debt instrument, interest rate (as a percent) | 4.65% |
Senior notes | 4.50% senior notes due December 2026 |  |
LONG-TERM DEBT |  |
Long-term debt, before deducting unamortized discounts and debt issuance costs | $ 750 | 750
Debt instrument, interest rate (as a percent) | 4.50% |
Senior notes | 3.55% senior notes due December 2029 |  |
LONG-TERM DEBT |  |
Long-term debt, before deducting unamortized discounts and debt issuance costs | $ 1,000 | $ 1,000
Debt instrument, interest rate (as a percent) | 3.55% | 3.55%
Debt instrument face value |  | $ 1,000
Senior notes | 3.80% senior notes due September 2030 |  |
LONG-TERM DEBT |  |
Long-term debt, before deducting unamortized discounts and debt issuance costs | $ 750 | 0
Debt instrument, interest rate (as a percent) | 3.80% |
Debt instrument face value | $ 750 |
Senior notes | 6.70% senior notes due May 2036 |  |
LONG-TERM DEBT |  |
Long-term debt, before deducting unamortized discounts and debt issuance costs | $ 250 | 250
Debt instrument, interest rate (as a percent) | 6.70% |
Senior notes | 6.65% senior notes due January 2037 |  |
LONG-TERM DEBT |  |
Long-term debt, before deducting unamortized discounts and debt issuance costs | $ 600 | 600
Debt instrument, interest rate (as a percent) | 6.65% |
Senior notes | 5.15% senior notes due June 2042 |  |
LONG-TERM DEBT |  |
Long-term debt, before deducting unamortized discounts and debt issuance costs | $ 499 | 500
Debt instrument, interest rate (as a percent) | 5.15% |
Senior notes | 4.30% senior notes due January 2043 |  |
LONG-TERM DEBT |  |
Long-term debt, before deducting unamortized discounts and debt issuance costs | $ 348 | 350
Debt instrument, interest rate (as a percent) | 4.30% |
Senior notes | 4.70% senior notes due June 2044 |  |
LONG-TERM DEBT |  |
Long-term debt, before deducting unamortized discounts and debt issuance costs | $ 687 | 700
Debt instrument, interest rate (as a percent) | 4.70% |
Senior notes | 4.90% senior notes due February 2045 |  |
LONG-TERM DEBT |  |
Long-term debt, before deducting unamortized discounts and debt issuance costs | $ 649 | 650
Debt instrument, interest rate (as a percent) | 4.90% |
Term Loan | GO Zone Term Loans |  |
LONG-TERM DEBT |  |
Noncurrent portion of other long-term debt | $ 199 | 199
Debt issuance costs | $ 1 | $ 1
Weighted average long term debt interest rate | 1.30% | 2.60%
Other long-term debt |  |
LONG-TERM DEBT |  |
Noncurrent portion of other long-term debt | $ 112 | $ 49

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