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Financial Risk Management Activities - Schedule of Derivative Transactions Designated and Effective as Cash Flow Hedges (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |
Unrealized Gain (Loss) on Cash Flow Hedging Instruments | $ 11 | $ 2 | $ (16) | $ 30
Derivative Instruments, Gain Reclassified from Accumulated OCI into Income, Effective Portion | 1 | 4 | 2 | 7
Interest Rate Swap [Member] |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |
Unrealized Gain (Loss) on Cash Flow Hedging Instruments | 11 | 2 | (16) | 30
Derivative Instruments, Gain Reclassified from Accumulated OCI into Income, Effective Portion | $ 1 | $ 4 | $ 2 | $ 7

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- Definition The effective portion of gain reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4C -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4C + Details
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- Definition Amount of unrealized gain (loss) related to derivatives designated as cash flow hedging instruments, recorded in results of operations to the extent that the cash flow hedge is determined to be ineffective. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4C -Subparagraph (d)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4C + Details
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