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Fair Value Disclosures - Narrative (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Debt Instrument [Line Items]    
Carrying value of long-term debt portfolio $ 21,495 $ 22,479
Level 2    
Debt Instrument [Line Items]    
Estimated fair value of long-term debt portfolio $ 19,836 $ 21,064