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Acquisitions and Other Transactions (Northwind Midstream - Assets Acquired and Liabilities Assumed) (Details) - USD ($) $ in Millions | Jun. 30, 2026 | Dec. 31, 2025 | Aug. 29, 2025
--- | --- | --- | ---
Business Combination, Recognized Liability Assumed, Liability [Abstract] |  |  |
Goodwill | $ 8,736 | $ 8,755 |
Northwind Midstream |  |  |
Business Combination, Recognized Asset Acquired, Asset [Abstract] |  |  |
Business Combination, Recognized Asset Acquired, Cash and Cash Equivalent |  |  | $ 17
Business Combination, Recognized Asset Acquired, Receivable, Current |  |  | 11
Other current assets |  |  | 1
Business Combination, Recognized Asset Acquired, Property, Plant, and Equipment |  |  | 1,167
Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Excluding Goodwill |  |  | 957
Business Combination, Recognized Asset Acquired, Other Asset, Noncurrent |  |  | 2
Business Combination, Recognized Asset Acquired, Asset |  |  | 2,155
Business Combination, Recognized Liability Assumed, Liability [Abstract] |  |  |
Business Combination, Recognized Liability Assumed, Accounts Payable, Current |  |  | 22
Business Combination, Recognized Liability Assumed, Accrued Property, Plant and Equipment, Current |  |  | 82
Business Combination, Recognized Liability Assumed, Accrued Liabilities, Current |  |  | 10
Other current liabilities |  |  | 1
Long-term operating lease liabilities |  |  | 1
Business Combination, Recognized Liability Assumed, Liability |  |  | 116
Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less) |  |  | 2,039
Goodwill |  |  | 360
Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less), and Goodwill |  |  | 2,399
Northwind Midstream | Previously Reported |  |  |
Business Combination, Recognized Asset Acquired, Asset [Abstract] |  |  |
Business Combination, Recognized Asset Acquired, Cash and Cash Equivalent |  |  | 17
Business Combination, Recognized Asset Acquired, Receivable, Current |  |  | 11
Other current assets |  |  | 1
Business Combination, Recognized Asset Acquired, Property, Plant, and Equipment |  |  | 1,182
Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Excluding Goodwill |  |  | 951
Business Combination, Recognized Asset Acquired, Other Asset, Noncurrent |  |  | 2
Business Combination, Recognized Asset Acquired, Asset |  |  | 2,164
Business Combination, Recognized Liability Assumed, Liability [Abstract] |  |  |
Business Combination, Recognized Liability Assumed, Accounts Payable, Current |  |  | 15
Business Combination, Recognized Liability Assumed, Accrued Property, Plant and Equipment, Current |  |  | 84
Business Combination, Recognized Liability Assumed, Accrued Liabilities, Current |  |  | 6
Other current liabilities |  |  | 1
Long-term operating lease liabilities |  |  | 1
Business Combination, Recognized Liability Assumed, Liability |  |  | 107
Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less) |  |  | 2,057
Goodwill |  |  | 356
Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less), and Goodwill |  |  | 2,413
Northwind Midstream | Revision of Prior Period, Adjustment |  |  |
Business Combination, Recognized Asset Acquired, Asset [Abstract] |  |  |
Business Combination, Recognized Asset Acquired, Cash and Cash Equivalent |  |  | 0
Business Combination, Recognized Asset Acquired, Receivable, Current |  |  | 0
Other current assets |  |  | 0
Business Combination, Recognized Asset Acquired, Property, Plant, and Equipment |  |  | (15)
Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Excluding Goodwill |  |  | 6
Business Combination, Recognized Asset Acquired, Other Asset, Noncurrent |  |  | 0
Business Combination, Recognized Asset Acquired, Asset |  |  | (9)
Business Combination, Recognized Liability Assumed, Liability [Abstract] |  |  |
Business Combination, Recognized Liability Assumed, Accounts Payable, Current |  |  | 7
Business Combination, Recognized Liability Assumed, Accrued Property, Plant and Equipment, Current |  |  | (2)
Business Combination, Recognized Liability Assumed, Accrued Liabilities, Current |  |  | 4
Other current liabilities |  |  | 0
Long-term operating lease liabilities |  |  | 0
Business Combination, Recognized Liability Assumed, Liability |  |  | 9
Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less) |  |  | (18)
Goodwill |  |  | 4
Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less), and Goodwill |  |  | $ (14)

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