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DEBT AND CREDIT FACILITIES - Schedule of Debt (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Oct. 31, 2023 | Dec. 31, 2022 | May 31, 2019
--- | --- | --- | --- | ---
Debt Instrument [Line Items] |  |  |  |
Total debt and finance lease obligations | $ 13,798 |  | $ 16,636 |
Short-term debt | 0 |  | (299) |
Current maturities of long-term debt and finance lease obligations | (2,668) |  | (1,105) |
Long-term debt and finance lease obligations | $ 11,130 |  | 15,232 |
Commercial paper |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Effective interest rate | 0.00% |  |  |
Total debt and finance lease obligations | $ 0 |  | 299 |
0.868% notes due 2023 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Senior notes, coupon rates | 0.868% |  |  |
Effective interest rate | 0.00% |  |  |
Total debt and finance lease obligations | $ 0 |  | 799 |
Floating-rate notes due 2023 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Effective interest rate | 0.00% |  |  |
Total debt and finance lease obligations | $ 0 |  | 299 |
0.4% notes due 2024 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Senior notes, coupon rates | 0.40% | 0.40% |  | 0.40%
Effective interest rate | 0.30% |  |  |
Total debt and finance lease obligations | $ 828 |  | 799 |
1.322% notes due 2024 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Senior notes, coupon rates | 1.322% |  |  |
Effective interest rate | 1.50% |  |  |
Total debt and finance lease obligations | $ 1,398 |  | 1,395 |
7.0% notes due 2024 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Senior notes, coupon rates | 7.00% |  |  |
Effective interest rate | 7.00% |  |  |
Total debt and finance lease obligations | $ 13 |  | 13 |
Floating-rate notes due 2024 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Effective interest rate | 5.70% |  |  |
Total debt and finance lease obligations | $ 300 |  | 299 |
Term loan maturing 2024 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Effective interest rate | 6.90% |  |  |
Total debt and finance lease obligations | $ 130 |  | 1,664 |
1.3% notes due 2025 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Senior notes, coupon rates | 1.30% |  |  |
Effective interest rate | 1.10% |  |  |
Total debt and finance lease obligations | $ 662 |  | 640 |
2.6% notes due 2026 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Senior notes, coupon rates | 2.60% |  |  |
Effective interest rate | 2.70% |  |  |
Total debt and finance lease obligations | $ 748 |  | 748 |
Term loan maturing 2026 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Effective interest rate | 6.50% |  |  |
Total debt and finance lease obligations | $ 1,643 |  | 1,643 |
7.65% debentures due 2027 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Senior notes, coupon rates | 7.65% |  |  |
Effective interest rate | 8.30% |  |  |
Total debt and finance lease obligations | $ 5 |  | 5 |
1.915% notes due 2027 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Senior notes, coupon rates | 1.915% |  |  |
Effective interest rate | 2.00% |  |  |
Total debt and finance lease obligations | $ 1,445 |  | 1,443 |
6.625% debentures due 2028 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Senior notes, coupon rates | 6.625% |  |  |
Effective interest rate | 5.70% |  |  |
Total debt and finance lease obligations | $ 95 |  | 96 |
2.272% notes due 2028 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Senior notes, coupon rates | 2.272% |  |  |
Effective interest rate | 2.40% |  |  |
Total debt and finance lease obligations | $ 1,244 |  | 1,242 |
1.3% notes due 2029 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Senior notes, coupon rates | 1.30% |  |  | 1.30%
Effective interest rate | 1.40% |  |  |
Total debt and finance lease obligations | $ 828 |  | 792 |
3.95% notes due 2030 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Senior notes, coupon rates | 3.95% |  |  |
Effective interest rate | 4.10% |  |  |
Total debt and finance lease obligations | $ 496 |  | 496 |
1.73% notes due 2031 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Senior notes, coupon rates | 1.73% |  |  |
Effective interest rate | 2.70% |  |  |
Total debt and finance lease obligations | $ 646 |  | 645 |
2.539% notes due 2032 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Senior notes, coupon rates | 2.539% |  |  |
Effective interest rate | 2.60% |  |  |
Total debt and finance lease obligations | $ 1,540 |  | 1,538 |
6.25% notes due 2037 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Senior notes, coupon rates | 6.25% |  |  |
Effective interest rate | 6.40% |  |  |
Total debt and finance lease obligations | $ 265 |  | 265 |
3.65% notes due 2042 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Senior notes, coupon rates | 3.65% |  |  |
Effective interest rate | 3.80% |  |  |
Total debt and finance lease obligations | $ 6 |  | 7 |
4.5% notes due 2043 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Senior notes, coupon rates | 4.50% |  |  |
Effective interest rate | 4.60% |  |  |
Total debt and finance lease obligations | $ 256 |  | 256 |
3.5% notes due 2046 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Senior notes, coupon rates | 3.50% |  |  |
Effective interest rate | 3.70% |  |  |
Total debt and finance lease obligations | $ 440 |  | 441 |
3.132% notes due 2051 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Senior notes, coupon rates | 3.132% |  |  |
Effective interest rate | 3.20% |  |  |
Total debt and finance lease obligations | $ 741 |  | 742 |
Finance leases and other |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Effective interest rate | 9.10% |  |  |
Total debt and finance lease obligations | $ 69 |  | $ 70 |

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