LONG-TERM DEBT - Schedule of Long-Term Debt (Details) - USD ($) $ in Millions | Jun. 30, 2024 | Feb. 29, 2024 | Dec. 31, 2023 |
Debt Instrument [Line Items] | | | |
Commercial paper | $ 1,763 | | $ 1,421 |
Credit Facility | 0 | | 0 |
Finance lease obligations | 128 | | 131 |
Other | 56 | | 56 |
Total debt | 13,143 | | 11,873 |
Less current portion | (960) | | (553) |
Long-term debt, noncurrent | 12,183 | | 11,320 |
Series P Notes, interest rate of 3.8%, face amount of $350, maturing October 1, 2025 (effective interest rate of 4.0%) | | | |
Debt Instrument [Line Items] | | | |
Senior notes | $ 349 | | 349 |
Series P Notes, interest rate of 3.8%, face amount of $350, maturing October 1, 2025 (effective interest rate of 4.0%) | Senior Notes | | | |
Debt Instrument [Line Items] | | | |
Interest rate | 3.80% | | |
Senior notes, face amount | $ 350 | | |
Effective interest rate | 4% | | |
Series R Notes, interest rate of 3.1%, face amount of $750, maturing June 15, 2026 (effective interest rate of 3.3%) | | | |
Debt Instrument [Line Items] | | | |
Senior notes | $ 748 | | 748 |
Series R Notes, interest rate of 3.1%, face amount of $750, maturing June 15, 2026 (effective interest rate of 3.3%) | Senior Notes | | | |
Debt Instrument [Line Items] | | | |
Interest rate | 3.10% | | |
Senior notes, face amount | $ 750 | | |
Effective interest rate | 3.30% | | |
Series V Notes, interest rate of 3.8%, face amount of $318, maturing March 15, 2025 (effective interest rate of 2.8%) | | | |
Debt Instrument [Line Items] | | | |
Senior notes | $ 320 | | 321 |
Series V Notes, interest rate of 3.8%, face amount of $318, maturing March 15, 2025 (effective interest rate of 2.8%) | Senior Notes | | | |
Debt Instrument [Line Items] | | | |
Interest rate | 3.80% | | |
Senior notes, face amount | $ 318 | | |
Effective interest rate | 2.80% | | |
Series W Notes, interest rate of 4.5%, face amount of $278, maturing October 1, 2034 (effective interest rate of 4.1%) | | | |
Debt Instrument [Line Items] | | | |
Senior notes | $ 288 | | 288 |
Series W Notes, interest rate of 4.5%, face amount of $278, maturing October 1, 2034 (effective interest rate of 4.1%) | Senior Notes | | | |
Debt Instrument [Line Items] | | | |
Interest rate | 4.50% | | |
Senior notes, face amount | $ 278 | | |
Effective interest rate | 4.10% | | |
Series X Notes, interest rate of 4.0%, face amount of $450, maturing April 15, 2028 (effective interest rate of 4.2%) | | | |
Debt Instrument [Line Items] | | | |
Senior notes | $ 447 | | 447 |
Series X Notes, interest rate of 4.0%, face amount of $450, maturing April 15, 2028 (effective interest rate of 4.2%) | Senior Notes | | | |
Debt Instrument [Line Items] | | | |
Interest rate | 4% | | |
Senior notes, face amount | $ 450 | | |
Effective interest rate | 4.20% | | |
Series AA Notes, interest rate of 4.7%, face amount of $300, maturing December 1, 2028 (effective interest rate of 4.8%) | | | |
Debt Instrument [Line Items] | | | |
Senior notes | $ 298 | | 298 |
Series AA Notes, interest rate of 4.7%, face amount of $300, maturing December 1, 2028 (effective interest rate of 4.8%) | Senior Notes | | | |
Debt Instrument [Line Items] | | | |
Interest rate | 4.70% | | |
Senior notes, face amount | $ 300 | | |
Effective interest rate | 4.80% | | |
Series CC Notes, interest rate of 3.6%, face amount of $550, matured April 15, 2024 (effective interest rate of 3.9%) | | | |
Debt Instrument [Line Items] | | | |
Senior notes | $ 0 | | 545 |
Series CC Notes, interest rate of 3.6%, face amount of $550, matured April 15, 2024 (effective interest rate of 3.9%) | Senior Notes | | | |
Debt Instrument [Line Items] | | | |
Interest rate | 3.60% | | |
Senior notes, face amount | $ 550 | | |
Effective interest rate | 3.90% | | |
Series EE Notes, interest rate of 5.8%, face amount of $600, maturing May 1, 2025 (effective interest rate of 6.0%) | | | |
Debt Instrument [Line Items] | | | |
Senior notes | $ 599 | | 598 |
Series EE Notes, interest rate of 5.8%, face amount of $600, maturing May 1, 2025 (effective interest rate of 6.0%) | Senior Notes | | | |
Debt Instrument [Line Items] | | | |
Interest rate | 5.80% | | |
Senior notes, face amount | $ 600 | | |
Effective interest rate | 6% | | |
Series FF Notes, interest rate of 4.6%, face amount of $1,000, maturing June 15, 2030 (effective interest rate of 4.8%) | | | |
Debt Instrument [Line Items] | | | |
Senior notes | $ 990 | | 990 |
Series FF Notes, interest rate of 4.6%, face amount of $1,000, maturing June 15, 2030 (effective interest rate of 4.8%) | Senior Notes | | | |
Debt Instrument [Line Items] | | | |
Interest rate | 4.60% | | |
Senior notes, face amount | $ 1,000 | | |
Effective interest rate | 4.80% | | |
Series GG Notes, interest rate of 3.5%, face amount of $1,000, maturing October 15, 2032 (effective interest rate of 3.7%) | | | |
Debt Instrument [Line Items] | | | |
Senior notes | $ 988 | | 988 |
Series GG Notes, interest rate of 3.5%, face amount of $1,000, maturing October 15, 2032 (effective interest rate of 3.7%) | Senior Notes | | | |
Debt Instrument [Line Items] | | | |
Interest rate | 3.50% | | |
Senior notes, face amount | $ 1,000 | | |
Effective interest rate | 3.70% | | |
Series HH Notes, interest rate of 2.9%, face amount of $1,100, maturing April 15, 2031 (effective interest rate of 3.0%) | | | |
Debt Instrument [Line Items] | | | |
Senior notes | $ 1,092 | | 1,091 |
Series HH Notes, interest rate of 2.9%, face amount of $1,100, maturing April 15, 2031 (effective interest rate of 3.0%) | Senior Notes | | | |
Debt Instrument [Line Items] | | | |
Interest rate | 2.90% | | |
Senior notes, face amount | $ 1,100 | | |
Effective interest rate | 3% | | |
Series II Notes, interest rate of 2.8%, face amount of $700, maturing October 15, 2033 (effective interest rate of 2.8%) | | | |
Debt Instrument [Line Items] | | | |
Senior notes | $ 695 | | 694 |
Series II Notes, interest rate of 2.8%, face amount of $700, maturing October 15, 2033 (effective interest rate of 2.8%) | Senior Notes | | | |
Debt Instrument [Line Items] | | | |
Interest rate | 2.80% | | |
Senior notes, face amount | $ 700 | | |
Effective interest rate | 2.80% | | |
Series JJ Notes, interest rate of 5.0%, face amount of $1,000, maturing October 15, 2027 (effective interest rate of 5.4%) | | | |
Debt Instrument [Line Items] | | | |
Senior notes | $ 989 | | 987 |
Series JJ Notes, interest rate of 5.0%, face amount of $1,000, maturing October 15, 2027 (effective interest rate of 5.4%) | Senior Notes | | | |
Debt Instrument [Line Items] | | | |
Interest rate | 5% | | |
Senior notes, face amount | $ 1,000 | | |
Effective interest rate | 5.40% | | |
Series KK Notes, interest rate of 4.9%, face amount of $800, maturing April 15, 2029 (effective interest rate of 5.3%) | | | |
Debt Instrument [Line Items] | | | |
Senior notes | $ 786 | | 785 |
Series KK Notes, interest rate of 4.9%, face amount of $800, maturing April 15, 2029 (effective interest rate of 5.3%) | Senior Notes | | | |
Debt Instrument [Line Items] | | | |
Interest rate | 4.90% | | |
Senior notes, face amount | $ 800 | | |
Effective interest rate | 5.30% | | |
Series LL Notes, interest rate of 5.5%, face amount of $450, maturing September 15, 2026 (effective interest rate of 5.9%) | | | |
Debt Instrument [Line Items] | | | |
Senior notes | $ 446 | | 445 |
Series LL Notes, interest rate of 5.5%, face amount of $450, maturing September 15, 2026 (effective interest rate of 5.9%) | Senior Notes | | | |
Debt Instrument [Line Items] | | | |
Interest rate | 5.50% | | |
Senior notes, face amount | $ 450 | | |
Effective interest rate | 5.90% | | |
Series MM Notes, interest rate of 5.6%, face amount of $700, maturing October 15, 2028 (effective interest rate of 5.9%) | | | |
Debt Instrument [Line Items] | | | |
Senior notes | $ 692 | | 691 |
Series MM Notes, interest rate of 5.6%, face amount of $700, maturing October 15, 2028 (effective interest rate of 5.9%) | Senior Notes | | | |
Debt Instrument [Line Items] | | | |
Interest rate | 5.60% | | |
Senior notes, face amount | $ 700 | | |
Effective interest rate | 5.90% | | |
Series NN Notes, interest rate of 4.9%, face amount of $500, maturing May 15, 2029 (effective interest rate of 5.3%) | | | |
Debt Instrument [Line Items] | | | |
Senior notes | $ 490 | | 0 |
Series NN Notes, interest rate of 4.9%, face amount of $500, maturing May 15, 2029 (effective interest rate of 5.3%) | Senior Notes | | | |
Debt Instrument [Line Items] | | | |
Interest rate | 4.90% | 4.875% | |
Senior notes, face amount | $ 500 | $ 500 | |
Effective interest rate | 5.30% | | |
Series OO Notes, interest rate of 5.3%, face amount of $1,000, maturing May 15, 2034 (effective interest rate of 5.6%) | | | |
Debt Instrument [Line Items] | | | |
Senior notes | $ 979 | | $ 0 |
Series OO Notes, interest rate of 5.3%, face amount of $1,000, maturing May 15, 2034 (effective interest rate of 5.6%) | Senior Notes | | | |
Debt Instrument [Line Items] | | | |
Interest rate | 5.30% | 5.30% | |
Senior notes, face amount | $ 1,000 | $ 1,000 | |
Effective interest rate | 5.60% | | |