Benefit Plans (Allocation Of Plan Assets) (Details)	Dec. 31, 2024
Pension Plans, Defined Benefit [Member] | Public equity securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Actual allocation, percentage	44.00%
Pension Plans, Defined Benefit [Member] | Liquid alternative securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Actual allocation, percentage	6.00%
Pension Plans, Defined Benefit [Member] | Return-seeking fixed income securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Actual allocation, percentage	8.00%
Pension Plans, Defined Benefit [Member] | Liability hedging fixed income securities (including cash and equivalents) [Member]
Defined Benefit Plan Disclosure [Line Items]
Actual allocation, percentage	42.00%
Other Postretirement Benefits Plans [Member] | Cash and equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Actual allocation, percentage	1.00%
Other Postretirement Benefits Plans [Member] | Public equity securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Actual allocation, percentage	27.00%
Other Postretirement Benefits Plans [Member] | Fixed income securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Actual allocation, percentage	72.00%
Minimum [Member] | Pension Plans, Defined Benefit [Member] | Public equity securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target range allocation, percentage	32.00%
Minimum [Member] | Pension Plans, Defined Benefit [Member] | Liquid alternative securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target range allocation, percentage	0.00%
Minimum [Member] | Pension Plans, Defined Benefit [Member] | Return-seeking fixed income securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target range allocation, percentage	4.00%
Minimum [Member] | Pension Plans, Defined Benefit [Member] | Liability hedging fixed income securities (including cash and equivalents) [Member]
Defined Benefit Plan Disclosure [Line Items]
Target range allocation, percentage	34.00%
Minimum [Member] | Other Postretirement Benefits Plans [Member] | Cash and equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Target range allocation, percentage	0.00%
Minimum [Member] | Other Postretirement Benefits Plans [Member] | Public equity securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target range allocation, percentage	0.00%
Minimum [Member] | Other Postretirement Benefits Plans [Member] | Fixed income securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target range allocation, percentage	40.00%
Maximum [Member] | Pension Plans, Defined Benefit [Member] | Public equity securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target range allocation, percentage	49.00%
Maximum [Member] | Pension Plans, Defined Benefit [Member] | Liquid alternative securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target range allocation, percentage	12.00%
Maximum [Member] | Pension Plans, Defined Benefit [Member] | Return-seeking fixed income securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target range allocation, percentage	18.00%
Maximum [Member] | Pension Plans, Defined Benefit [Member] | Liability hedging fixed income securities (including cash and equivalents) [Member]
Defined Benefit Plan Disclosure [Line Items]
Target range allocation, percentage	53.00%
Maximum [Member] | Other Postretirement Benefits Plans [Member] | Cash and equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Target range allocation, percentage	5.00%
Maximum [Member] | Other Postretirement Benefits Plans [Member] | Public equity securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target range allocation, percentage	40.00%
Maximum [Member] | Other Postretirement Benefits Plans [Member] | Fixed income securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target range allocation, percentage	100.00%