Benefit Plans (Asset Allocations) (Details)	Dec. 31, 2023
Pension [Member]
Defined Benefit Plan Disclosure [Line Items]
Composition of plan assets	2.00%
Postretirement Benefit Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Composition of plan assets	1.00%
Equity Securities [Member] | Pension [Member]
Defined Benefit Plan Disclosure [Line Items]
Composition of plan assets	18.00%
Equity Securities [Member] | Postretirement Benefit Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Composition of plan assets	53.00%
Corporate Bonds [Member] | Pension [Member]
Defined Benefit Plan Disclosure [Line Items]
Composition of plan assets	57.00%
Corporate Bonds [Member] | Postretirement Benefit Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Composition of plan assets	31.00%
US Treasury And Foreign Government Securities and all other investments [Member] | Pension [Member]
Defined Benefit Plan Disclosure [Line Items]
Composition of plan assets	25.00%
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	16.00%
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	6.00%