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Risk Management - Fair Value of Derivative Contracts (Details) - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Derivatives, Fair Value [Line Items] |  |
Asset derivatives | $ 62 | $ 178
Liability derivatives | (389) | (395)
Energy commodity derivative contracts |  |
Derivatives, Fair Value [Line Items] |  |
Asset derivatives | 35 | 140
Liability derivatives | (106) | (113)
Foreign currency contracts |  |
Derivatives, Fair Value [Line Items] |  |
Liability derivatives | (29) | (4)
Designated as Hedging Instrument |  |
Derivatives, Fair Value [Line Items] |  |
Asset derivatives | 39 | 126
Liability derivatives | (337) | (386)
Designated as Hedging Instrument | Energy commodity derivative contracts |  |
Derivatives, Fair Value [Line Items] |  |
Asset derivatives | 19 | 89
Liability derivatives | (54) | (104)
Designated as Hedging Instrument | Energy commodity derivative contracts | Other Current Assets |  |
Derivatives, Fair Value [Line Items] |  |
Asset derivatives | 10 | 77
Designated as Hedging Instrument | Energy commodity derivative contracts | (Other Current Liabilities) |  |
Derivatives, Fair Value [Line Items] |  |
Liability derivatives | (46) | (75)
Designated as Hedging Instrument | Energy commodity derivative contracts | Deferred Charges and Other Assets |  |
Derivatives, Fair Value [Line Items] |  |
Asset derivatives | 9 | 12
Designated as Hedging Instrument | Energy commodity derivative contracts | (Other Long-Term Liabilities and Deferred Credits) |  |
Derivatives, Fair Value [Line Items] |  |
Liability derivatives | (8) | (29)
Designated as Hedging Instrument | Interest rate contracts |  |
Derivatives, Fair Value [Line Items] |  |
Asset derivatives | 20 | 37
Liability derivatives | (254) | (278)
Designated as Hedging Instrument | Interest rate contracts | Other Current Assets |  |
Derivatives, Fair Value [Line Items] |  |
Asset derivatives | 1 | 0
Designated as Hedging Instrument | Interest rate contracts | (Other Current Liabilities) |  |
Derivatives, Fair Value [Line Items] |  |
Liability derivatives | (51) | (120)
Designated as Hedging Instrument | Interest rate contracts | Deferred Charges and Other Assets |  |
Derivatives, Fair Value [Line Items] |  |
Asset derivatives | 19 | 37
Designated as Hedging Instrument | Interest rate contracts | (Other Long-Term Liabilities and Deferred Credits) |  |
Derivatives, Fair Value [Line Items] |  |
Liability derivatives | (203) | (158)
Designated as Hedging Instrument | Foreign currency contracts |  |
Derivatives, Fair Value [Line Items] |  |
Asset derivatives | 0 | 0
Liability derivatives | (29) | (4)
Designated as Hedging Instrument | Foreign currency contracts | Other Current Assets |  |
Derivatives, Fair Value [Line Items] |  |
Asset derivatives | 0 | 0
Designated as Hedging Instrument | Foreign currency contracts | (Other Current Liabilities) |  |
Derivatives, Fair Value [Line Items] |  |
Liability derivatives | (3) | (2)
Designated as Hedging Instrument | Foreign currency contracts | Deferred Charges and Other Assets |  |
Derivatives, Fair Value [Line Items] |  |
Asset derivatives | 0 | 0
Designated as Hedging Instrument | Foreign currency contracts | (Other Long-Term Liabilities and Deferred Credits) |  |
Derivatives, Fair Value [Line Items] |  |
Liability derivatives | (26) | (2)
Not Designated as Hedging Instrument |  |
Derivatives, Fair Value [Line Items] |  |
Asset derivatives | 23 | 52
Liability derivatives | (52) | (9)
Not Designated as Hedging Instrument | Energy commodity derivative contracts |  |
Derivatives, Fair Value [Line Items] |  |
Asset derivatives | 15 | 52
Liability derivatives | (50) | (9)
Not Designated as Hedging Instrument | Energy commodity derivative contracts | Other Current Assets |  |
Derivatives, Fair Value [Line Items] |  |
Asset derivatives | 14 | 49
Not Designated as Hedging Instrument | Energy commodity derivative contracts | (Other Current Liabilities) |  |
Derivatives, Fair Value [Line Items] |  |
Liability derivatives | (35) | (8)
Not Designated as Hedging Instrument | Energy commodity derivative contracts | Deferred Charges and Other Assets |  |
Derivatives, Fair Value [Line Items] |  |
Asset derivatives | 1 | 3
Not Designated as Hedging Instrument | Energy commodity derivative contracts | (Other Long-Term Liabilities and Deferred Credits) |  |
Derivatives, Fair Value [Line Items] |  |
Liability derivatives | (15) | (1)
Not Designated as Hedging Instrument | Interest rate contracts |  |
Derivatives, Fair Value [Line Items] |  |
Asset derivatives | 8 | 0
Liability derivatives | (2) | 0
Not Designated as Hedging Instrument | Interest rate contracts | Other Current Assets |  |
Derivatives, Fair Value [Line Items] |  |
Asset derivatives | 4 | 0
Not Designated as Hedging Instrument | Interest rate contracts | (Other Current Liabilities) |  |
Derivatives, Fair Value [Line Items] |  |
Liability derivatives | 0 | 0
Not Designated as Hedging Instrument | Interest rate contracts | Deferred Charges and Other Assets |  |
Derivatives, Fair Value [Line Items] |  |
Asset derivatives | 4 | 0
Not Designated as Hedging Instrument | Interest rate contracts | (Other Long-Term Liabilities and Deferred Credits) |  |
Derivatives, Fair Value [Line Items] |  |
Liability derivatives | $ 2 | $ 0

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- Definition Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4B -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4B Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4B -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4B Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 210 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 22 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483444/210-20-55-22 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483466/210-20-50-3 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483444/210-20-55-7 Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 4D -Subparagraph (c)(2) -SubTopic 20 -Topic 860 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481326/860-20-50-4D + Details
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