LONG-TERM DEBT - Debt Activity (Details) $ in Millions	9 Months Ended
	Sep. 30, 2024 USD ($)
Debt Instrument, Increase (Decrease) [Roll Forward]
Beginning balance	$ 17,955
Borrowings	9,700
Debt Assumptions related to CrownRock	1,244
Repayments	(4,000)
Ending balance	24,899
364-day term loan due 2025 | Secured Debt
Debt Instrument, Increase (Decrease) [Roll Forward]
Borrowings	2,000
Repayments	$ (1,700)
Debt term	364 days
Interest rate	6.801%
Two-year term loan due 2026 | Secured Debt
Debt Instrument, Increase (Decrease) [Roll Forward]
Borrowings	$ 2,700
Debt term	2 years
Interest rate	6.926%
5.000% senior notes due 2027 | Senior Notes
Debt Instrument, Increase (Decrease) [Roll Forward]
Borrowings	$ 600
Interest rate	5.00%
5.200% senior notes due 2029 | Senior Notes
Debt Instrument, Increase (Decrease) [Roll Forward]
Borrowings	$ 1,200
Interest rate	5.20%
5.375% senior notes due 2032 | Senior Notes
Debt Instrument, Increase (Decrease) [Roll Forward]
Borrowings	$ 1,000
Interest rate	5.375%
5.550% senior notes due 2034 | Senior Notes
Debt Instrument, Increase (Decrease) [Roll Forward]
Borrowings	$ 1,200
Interest rate	5.55%
6.050% senior notes due 2054 | Senior Notes
Debt Instrument, Increase (Decrease) [Roll Forward]
Borrowings	$ 1,000
Interest rate	6.05%
5.625% senior notes due 2025 | Senior Notes
Debt Instrument, Increase (Decrease) [Roll Forward]
Debt Assumptions related to CrownRock	$ 868
Repayments	$ (868)
Interest rate	5.625%
5.000% senior notes due 2029 | Senior Notes
Debt Instrument, Increase (Decrease) [Roll Forward]
Debt Assumptions related to CrownRock	$ 376
Repayments	$ (376)
Interest rate	5.00%
6.950% senior notes due 2024 | Senior Notes
Debt Instrument, Increase (Decrease) [Roll Forward]
Repayments	$ (291)
Interest rate	6.95%
3.450% senior notes due 2024 | Senior Notes
Debt Instrument, Increase (Decrease) [Roll Forward]
Repayments	$ (111)
Interest rate	3.45%
2.900% senior notes due 2024 | Senior Notes
Debt Instrument, Increase (Decrease) [Roll Forward]
Repayments	$ (654)
Interest rate	2.90%