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Debt and Derivatives - Derivatives (Detail) - Treasury Lock [Member] $ in Millions | 9 Months Ended
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Sep. 30, 2024 USD ($)
Derivatives |
OCI gain (loss) for fair value changes, after tax | $ (35)
Ten-year rate [Member] |
Derivatives |
Derivative notional value | 900
Thirty-year rate [Member] |
Derivatives |
Derivative notional value | $ 650

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