v3.26.1
Fair Value of Financial Assets and Liabilities - Fair Value of Financial Liabilities Recorded at Amortized Cost (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Carrying Amount    
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]    
Long-Term Debt, including amounts due within one year $ 17,364 $ 7,342
SNF Obligation 1,440 1,426
Fair Value    
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]    
Long-Term Debt, including amounts due within one year 17,469 7,661
SNF Obligation 1,308 1,406
Fair Value | Level 2    
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]    
Long-Term Debt, including amounts due within one year 13,994 6,995
SNF Obligation 1,308 1,406
Fair Value | Level 3    
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]    
Long-Term Debt, including amounts due within one year 3,475 666
SNF Obligation $ 0 $ 0