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FAIR VALUES OF FINANCIAL INSTRUMENTS - Schedule of Financial Instruments Measured at Fair Value on a Recurring Basis (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Assets disclosed at fair value    
Investment securities $ 218 $ 221
Total assets measured at fair value 218 221
Level 1    
Assets disclosed at fair value    
Investment securities 50 50
Total assets measured at fair value 50 50
Level 2    
Assets disclosed at fair value    
Investment securities 168 171
Total assets measured at fair value 168 171
Level 3    
Assets disclosed at fair value    
Investment securities 0 0
Total assets measured at fair value $ 0 $ 0