XML 64 R55.htm IDEA: XBRL DOCUMENT v3.23.1
Pension and Other Postretirement Benefits (Schedule of Net Periodic Pension Cost) (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Defined Benefit Plan Disclosure [Line Items]    
Service cost $ 5 $ 9
Interest cost 23 15
Expected return on plan assets (30) (35)
Amortization of actuarial loss 7 8
Net periodic pension (benefit) cost $ 5 (3)
Document Fiscal Year Focus 2023  
Pension Plan [Member] | Qualified Plan [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Service cost $ 5 9
Interest cost 21 14
Expected return on plan assets (30) (35)
Amortization of actuarial loss 6 6
Net periodic pension (benefit) cost 2 (6)
Supplemental Employee Retirement Plan [Member] | Nonqualified Plan [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Service cost 0 0
Interest cost 2 1
Expected return on plan assets 0 0
Amortization of actuarial loss 1 2
Net periodic pension (benefit) cost $ 3 $ 3