Benefit Plans (Asset Allocations) (Details)	Dec. 31, 2022
Equity Securities [Member] | Pension [Member]
Defined Benefit Plan Disclosure [Line Items]
Composition of plan assets	20.00%
Equity Securities [Member] | Postretirement Benefit Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Composition of plan assets	56.00%
Corporate Bonds [Member] | Pension [Member]
Defined Benefit Plan Disclosure [Line Items]
Composition of plan assets	52.00%
Corporate Bonds [Member] | Postretirement Benefit Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Composition of plan assets	33.00%
US Treasury And Foreign Government Securities and all other investments [Member] | Pension [Member]
Defined Benefit Plan Disclosure [Line Items]
Composition of plan assets	28.00%
US Treasury And Foreign Government Securities and all other investments [Member] | Postretirement Benefit Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Composition of plan assets	11.00%
US Treasury and Foreign Government Securities [Member] | Pension [Member]
Defined Benefit Plan Disclosure [Line Items]
Composition of plan assets	19.00%
Asset Based Securities And Other Investments [Member] | Pension [Member]
Defined Benefit Plan Disclosure [Line Items]
Composition of plan assets	9.00%