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EQUITY - Narrative (Details) - USD ($) |  |  |  | 3 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Feb. 03, 2025 | Jan. 31, 2025 | Sep. 25, 2023 | Dec. 31, 2024 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Oct. 17, 2024 | Oct. 15, 2024 | Jan. 31, 2024
Noncontrolling interests in consolidated subsidiaries |  |  |  | $ 5,097,000,000 | $ 5,097,000,000 | $ 0 |  |  |  |
Aggregate amount of common shares available for issuance and sale under equity distribution agreement |  |  |  |  | $ 1,000,000,000 |  |  |  |  |
Sale of stock, number of shares issued in transaction (in shares) |  |  |  |  | 0 |  |  |  |  |
Share repurchase, authorized amount |  |  |  |  |  |  |  |  |  | $ 2,000,000,000
Repurchase of common stock |  |  |  |  | $ 172,000,000 |  |  |  |  |
Cash, dividends |  |  |  |  | 2,300,000,000 | $ 1,800,000,000 | $ 1,700,000,000 |  |  |
Delaware Basin Joint Venture Gathering Limited Liability Company |  |  |  |  |  |  |  |  |  |
Noncontrolling Interest in Variable Interest Entity |  |  |  | $ 684,000,000 | $ 684,000,000 |  |  |  |  |
Delaware Basin Joint Venture Gathering Limited Liability Company | Enlink |  |  |  |  |  |  |  |  |  |
Ownership percentage in variable interest entity |  |  |  |  | 50.10% |  |  |  |  |
Series B Preferred Stock |  |  |  |  |  |  |  |  |  |
Preferred stock, convertible, conversion ratio |  |  |  | 1.15 | 1.15 |  |  |  |  |
Noncontrolling interests in consolidated subsidiaries |  |  |  | $ 515,000,000 | $ 515,000,000 |  |  |  |  |
Outstanding units (in shares) |  |  |  | 27,400,000 | 27,400,000 |  |  |  |  |
Conversion of stock (in shares) |  |  |  | 0 |  |  |  |  |  |
Preferred stock, shares outstanding (in shares) |  |  |  | 0 | 0 |  |  |  |  |
Series A Preferred Stock |  |  |  |  |  |  |  |  |  |
Preferred stock, shares outstanding (in shares) |  |  |  | 0 | 0 |  |  |  |  |
Series C Preferred Stock |  |  |  |  |  |  |  |  |  |
Preferred stock, shares outstanding (in shares) |  |  |  | 0 | 0 |  |  |  |  |
Subsequent Event |  |  |  |  |  |  |  |  |  |
Dividends declared (in dollars per share) | $ 1.03 |  |  |  |  |  |  |  |  |
Common stock, dividends, declared, annualized (in dollars per share) | $ 4.12 |  |  |  |  |  |  |  |  |
EnLink Controlling Interest Acquisition |  |  |  |  |  |  |  |  |  |
Percentage of voting interests acquired |  |  |  |  |  |  |  |  | 100.00% |
Noncontrolling interests |  |  |  | $ 5,100,000,000 | $ 5,100,000,000 |  |  |  | $ 5,076,000,000 |
Business combination, acquisition of less than 100 percent, noncontrolling interest, percentage |  |  |  | 57.00% | 57.00% |  |  |  |  |
EnLink Controlling Interest Acquisition | Common Stock |  |  |  |  |  |  |  |  |  |
Business acquisition, share price (in dollars per share) |  |  |  |  |  |  |  |  | $ 14.90 |
EnLink Controlling Interest Acquisition | Subsequent Event |  |  |  |  |  |  |  |  |  |
Exchange ratio per acquiree share (in shares) |  | 0.1412 |  |  |  |  |  |  |  |
EnLink Controlling Interest Acquisition | Subsequent Event | Common Stock |  |  |  |  |  |  |  |  |  |
Shares of ONEOK common stock issued (in shares) |  | 41,000,000 |  |  |  |  |  |  |  |
Equity consideration |  | $ 4,000,000,000.0 |  |  |  |  |  |  |  |
Magellan Acquisition |  |  |  |  |  |  |  |  |  |
Exchange ratio per acquiree share (in shares) |  |  | 0.667 |  |  |  |  |  |  |
Shares of ONEOK common stock issued (in shares) |  |  | 134,800,000 |  |  |  |  |  |  |
Equity consideration |  |  | $ 9,062,000,000 |  |  |  |  |  |  |
Business acquisition, share price (in dollars per share) |  |  | $ 25.00 |  |  |  |  |  |  |
Magellan Acquisition | Common Stock |  |  |  |  |  |  |  |  |  |
Equity consideration |  |  | $ 8,969,000,000 |  |  |  |  |  |  |
GIP | EnLink Controlling Interest Acquisition |  |  |  |  |  |  |  |  |  |
Percentage of voting interests acquired |  |  |  |  |  |  |  |  | 43.00% |
EnLink Controlling Interest Acquisition | Series C Preferred Stock |  |  |  |  |  |  |  |  |  |
Preferred stock, redemption price per share (in dollars per share) |  |  |  |  |  |  |  | $ 1,000 |  |
Partners capital account, redemption price unpaid distributions (us dollars per share) |  |  |  |  |  |  |  | $ 8.28 |  |
Preferred stock, redemption amount |  |  |  |  |  |  |  | $ 365,000,000 |  |

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