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Fair Value of Financial Instruments (Tables)
3 Months Ended
Mar. 31, 2026
Fair Value Disclosures [Abstract]  
Schedule of Carrying Values and Fair Values of Financial Instruments
 March 31, 2026December 31, 2025
 Carrying
value
Fair
value
Carrying
value
Fair
value
Available-for-sale securitiesLevel 1$17 $17 $18 $18 
Held-to-maturity investmentsLevel 2$$$$
Long-term debt, less long-term debt due within one yearLevel 2$4,050 $4,054 $2,859 $2,919