v3.25.4
Fair Value Measurements And Disclosure (Narrative) (Details) - USD ($)
$ in Millions
9 Months Ended
Sep. 30, 2022
Dec. 31, 2025
Dec. 31, 2024
Fair Value Disclosures [Abstract]      
Available-for-sale debt securities   $ 587 $ 689
Available-for-sale debt securities - maturities less than 1 year   13  
Available-for-sale debt securities - maturities within 1 to 3 years   125  
Available-for-sale debt securities - maturities within 3 to 5 years   183  
Available-for-sale debt securities - maturities for 5 or more years   266  
Fair Value, Option, Quantitative Disclosures [Line Items]      
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax $ 1,857    
Anticipated reclassification of holding losses during the next 12 months - cash flow hedges   59  
Collateral submitted to counterparty   513 188
Collateral received from counterparty   314 $ 0
Collateral contingently payable to the counterparty   49  
Measurement Input, Entity Credit Risk      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Collateral contingently payable to the counterparty   $ 1,405