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v3.26.1

Fair Value Measurements (Assets and Liabilities Accounted for at Fair Value on Recurring Basis) (Detail) - USD ($) $ in Millions | Mar. 31, 2026 | Dec. 31, 2025
--- | --- | ---
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Cash collateral netted with derivative liabilities | $ 511 | $ 10
Fair Value, Recurring |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Contingent consideration | 239 | 236
Fair Value, Recurring | Commodity derivatives |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Commodity derivative instruments, assets - netting and collateral | (3,127) | (226)
Derivative asset, net carrying value on balance sheet | 13 | 17
Commodity derivative instruments, assets - collateral pledged not offset | 347 | 10
Commodity derivative instruments, liabilities - netting and collateral | (3,638) | (236)
Derivative liability, net carrying value on balance sheet | 7 | 0
Commodity derivative instruments, liabilities - collateral pledged not offset | 0 | 0
Fair Value, Recurring | Embedded derivatives in commodity contracts |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Commodity derivative instruments, liabilities - netting and collateral | 0 | 0
Derivative liability, net carrying value on balance sheet | 54 | 41
Commodity derivative instruments, liabilities - collateral pledged not offset | 0 | 0
Fair Value, Recurring | Level 1 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Contingent consideration | 0 | 0
Fair Value, Recurring | Level 1 | Commodity derivatives |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Commodity derivative instruments, assets - gross | 3,140 | 243
Commodity derivative instruments, liabilities - gross | 3,638 | 236
Fair Value, Recurring | Level 1 | Embedded derivatives in commodity contracts |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Commodity derivative instruments, liabilities - gross | 0 | 0
Fair Value, Recurring | Level 2 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Contingent consideration | 0 | 0
Fair Value, Recurring | Level 2 | Commodity derivatives |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Commodity derivative instruments, assets - gross | 0 | 0
Commodity derivative instruments, liabilities - gross | 0 | 0
Fair Value, Recurring | Level 2 | Embedded derivatives in commodity contracts |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Commodity derivative instruments, liabilities - gross | 0 | 0
Fair Value, Recurring | Level 3 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Contingent consideration | 239 | 236
Fair Value, Recurring | Level 3 | Commodity derivatives |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Commodity derivative instruments, assets - gross | 0 | 0
Commodity derivative instruments, liabilities - gross | 7 | 0
Fair Value, Recurring | Level 3 | Embedded derivatives in commodity contracts |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Commodity derivative instruments, liabilities - gross | $ 54 | $ 41

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