Employee Benefits Schedule of Expected Benefit Payments (Details) $ in Millions	Dec. 31, 2021 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Benefit Payments in Year One	$ 66
Defined Benefit Plan, Expected Future Benefit Payments in Year Two	67
Defined Benefit Plan, Expected Future Benefit Payments in Year Three	66
Defined Benefit Plan, Expected Future Benefit Payments in Year Four	65
Defined Benefit Plan, Expected Future Benefit Payments in Year Five	65
Defined Benefit Plan, Expected Future Benefit Payments in Five Fiscal Years Thereafter	307
Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Benefit Payments in Year One	59
Defined Benefit Plan, Expected Future Benefit Payments in Year Two	59
Defined Benefit Plan, Expected Future Benefit Payments in Year Three	58
Defined Benefit Plan, Expected Future Benefit Payments in Year Four	57
Defined Benefit Plan, Expected Future Benefit Payments in Year Five	58
Defined Benefit Plan, Expected Future Benefit Payments in Five Fiscal Years Thereafter	277
Other Postretirement Benefit Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Benefit Payments in Year One	5
Defined Benefit Plan, Expected Future Benefit Payments in Year Two	5
Defined Benefit Plan, Expected Future Benefit Payments in Year Three	6
Defined Benefit Plan, Expected Future Benefit Payments in Year Four	6
Defined Benefit Plan, Expected Future Benefit Payments in Year Five	5
Defined Benefit Plan, Expected Future Benefit Payments in Five Fiscal Years Thereafter	19
Non Qualified Benefit Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Benefit Payments in Year One	2
Defined Benefit Plan, Expected Future Benefit Payments in Year Two	3
Defined Benefit Plan, Expected Future Benefit Payments in Year Three	2
Defined Benefit Plan, Expected Future Benefit Payments in Year Four	2
Defined Benefit Plan, Expected Future Benefit Payments in Year Five	2
Defined Benefit Plan, Expected Future Benefit Payments in Five Fiscal Years Thereafter	$ 11