Savings Plans, Pension Plans and Other Postretirement Employee Benefits (Actual Plan Asset Allocations of the Pension Benefit Plans' Assets) (Details) - Pension Plans [Member]	Dec. 31, 2021	Dec. 31, 2020
Defined Benefit Plan, Actual Plan Asset Allocations	100.00%	100.00%
Global Equities [Member]
Defined Benefit Plan, Actual Plan Asset Allocations	20.00%	32.00%
Fixed Income Securities [Member]
Defined Benefit Plan, Actual Plan Asset Allocations	73.00%	53.00%
Other (Includes Cash and Cash Equivalents and Alternatives) [Member]
Defined Benefit Plan, Actual Plan Asset Allocations	7.00%	15.00%