v3.22.0.1
Employee Benefit Plans (Information About The Expected Cash Flows For The Qualified and Non-Qualified Pension Plans) (Details)
Dec. 31, 2021
USD ($)
Qualified Plan [Member] | Pension Plan [Member]  
Defined Benefit Plan, Expected Future Employer Contributions [Abstract]  
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year $ 0
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]  
Defined Benefit Plan, Expected Future Benefit Payment, Next Twelve Months 137,000,000
Defined Benefit Plan, Expected Future Benefit Payment, Year Two 134,000,000
Defined Benefit Plan, Expected Future Benefit Payment, Year Three 137,000,000
Defined Benefit Plan, Expected Future Benefit Payment, Year Four 135,000,000
Defined Benefit Plan, Expected Future Benefit Payment, Year Five 134,000,000
Defined Benefit Plan, Expected Future Benefit Payment, Five Fiscal Years Thereafter 650,000,000
Nonqualified Plan [Member] | Supplemental Employee Retirement Plan [Member]  
Defined Benefit Plan, Expected Future Employer Contributions [Abstract]  
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year 35,000,000
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]  
Defined Benefit Plan, Expected Future Benefit Payment, Next Twelve Months 35,000,000
Defined Benefit Plan, Expected Future Benefit Payment, Year Two 13,000,000
Defined Benefit Plan, Expected Future Benefit Payment, Year Three 10,000,000
Defined Benefit Plan, Expected Future Benefit Payment, Year Four 11,000,000
Defined Benefit Plan, Expected Future Benefit Payment, Year Five 11,000,000
Defined Benefit Plan, Expected Future Benefit Payment, Five Fiscal Years Thereafter $ 50,000,000