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v3.25.2

Debt And Related Expenses (Narrative) (Details) $ in Millions |  |  | 1 Months Ended | 6 Months Ended |
--- | --- | --- | --- | --- | ---
Sep. 15, 2024 USD ($) | Aug. 12, 2024 USD ($) | Sep. 30, 2025 USD ($) | Jun. 30, 2025 USD ($) | Aug. 28, 2024 USD ($)
Debt Instrument [Line Items] |  |  |  |  |
Maturity date extension |  |  |  | in the first quarter of 2025, Devon exercised its option to extend the Senior Credit Facility maturity date from March 24, 2029 to March 24, 2030 |
Term Loan Credit Agreement [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Aggregate Principal Amount |  | $ 2,000 |  |  |
Outstanding credit facility borrowings |  | 1,000 |  |  |
Debt-to-capitalization ratio |  |  |  | 0.259 |
Interest rate on the term loan |  |  |  | 5.80% |
Senior Credit Facility [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Credit facility, borrowing capacity |  |  |  | $ 3,000 |
Outstanding credit facility borrowings |  |  |  | $ 0 |
Debt-to-capitalization ratio |  |  |  | 0.259 |
Outstanding letters of credit |  |  |  | $ 4 |
Senior Credit Facility [Member] | Maximum [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt-to-capitalization ratio |  |  |  | 0.65 |
Tranche One [Member] | Term Loan Credit Agreement [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Aggregate Principal Amount |  | 500 |  |  |
Tranche Two [Member] | Term Loan Credit Agreement [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Aggregate Principal Amount |  | $ 1,500 |  |  |
Senior Notes [Member] | Devon [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Repayments of Related Party Debt | $ 472 |  |  |  |
Debt interest rate, stated percentage | 5.25% |  |  |  |
Subsequent Event [Member] | Senior Notes [Member] | Devon [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Early Repayments of Related Party Debt |  |  | $ 485 |  |
Debt interest rate, stated percentage |  |  | 5.85% |  |
5.2% due 2034 [Member] | Senior Notes [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Issuance of Senior Long-Term Debt |  |  |  |  | $ 1,250
Debt interest rate, stated percentage |  |  |  |  | 5.20%
5.75% due 2054 [Member] | Senior Notes [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Issuance of Senior Long-Term Debt |  |  |  |  | $ 1,000
Debt interest rate, stated percentage |  |  |  |  | 5.75%

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