v3.25.4
Employee Benefits, Pension and Other Benefit Plan Assets (Details) - Pension Plan and Other Postretirement Benefits Plan [Member] - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Balances of pension plan and other benefit plan assets measured at fair value [Abstract]    
Plan investments - excluding investments at NAV $ 8,311 $ 8,335
Total plan assets 8,626 8,632
Net receivables 68 51
Debt securities [Member]    
Balances of pension plan and other benefit plan assets measured at fair value [Abstract]    
Plan investments - excluding investments at NAV 6,133 6,142
Equity securities and mutual funds [Member]    
Balances of pension plan and other benefit plan assets measured at fair value [Abstract]    
Plan investments - excluding investments at NAV 818 983
Collective investment funds [Member]    
Balances of pension plan and other benefit plan assets measured at fair value [Abstract]    
Plan investments - excluding investments at NAV 1,096 1,062
Other [Member]    
Balances of pension plan and other benefit plan assets measured at fair value [Abstract]    
Plan investments - excluding investments at NAV 264 148
Level 1 [Member]    
Balances of pension plan and other benefit plan assets measured at fair value [Abstract]    
Plan investments - excluding investments at NAV 2,338 2,566
Level 1 [Member] | Debt securities [Member]    
Balances of pension plan and other benefit plan assets measured at fair value [Abstract]    
Plan investments - excluding investments at NAV 1,518 1,581
Level 1 [Member] | Equity securities and mutual funds [Member]    
Balances of pension plan and other benefit plan assets measured at fair value [Abstract]    
Plan investments - excluding investments at NAV 818 983
Level 1 [Member] | Collective investment funds [Member]    
Balances of pension plan and other benefit plan assets measured at fair value [Abstract]    
Plan investments - excluding investments at NAV 0 0
Level 1 [Member] | Other [Member]    
Balances of pension plan and other benefit plan assets measured at fair value [Abstract]    
Plan investments - excluding investments at NAV 2 2
Level 2 [Member]    
Balances of pension plan and other benefit plan assets measured at fair value [Abstract]    
Plan investments - excluding investments at NAV 5,939 5,735
Level 2 [Member] | Debt securities [Member]    
Balances of pension plan and other benefit plan assets measured at fair value [Abstract]    
Plan investments - excluding investments at NAV 4,615 4,561
Level 2 [Member] | Equity securities and mutual funds [Member]    
Balances of pension plan and other benefit plan assets measured at fair value [Abstract]    
Plan investments - excluding investments at NAV 0 0
Level 2 [Member] | Collective investment funds [Member]    
Balances of pension plan and other benefit plan assets measured at fair value [Abstract]    
Plan investments - excluding investments at NAV 1,096 1,062
Level 2 [Member] | Other [Member]    
Balances of pension plan and other benefit plan assets measured at fair value [Abstract]    
Plan investments - excluding investments at NAV 228 112
Level 3 [Member]    
Balances of pension plan and other benefit plan assets measured at fair value [Abstract]    
Plan investments - excluding investments at NAV 34 34
Level 3 [Member] | Debt securities [Member]    
Balances of pension plan and other benefit plan assets measured at fair value [Abstract]    
Plan investments - excluding investments at NAV 0 0
Level 3 [Member] | Equity securities and mutual funds [Member]    
Balances of pension plan and other benefit plan assets measured at fair value [Abstract]    
Plan investments - excluding investments at NAV 0 0
Level 3 [Member] | Collective investment funds [Member]    
Balances of pension plan and other benefit plan assets measured at fair value [Abstract]    
Plan investments - excluding investments at NAV 0 0
Level 3 [Member] | Other [Member]    
Balances of pension plan and other benefit plan assets measured at fair value [Abstract]    
Plan investments - excluding investments at NAV 34 34
Investments at NAV [Member]    
Balances of pension plan and other benefit plan assets measured at fair value [Abstract]    
Total plan assets $ 247 $ 246