Retirement Benefits (Schedule of Asset Allocation) (Details)	Dec. 31, 2025
DB Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Asset allocation	100.00%
DB Pension Plans \| Fixed-income securities
Defined Benefit Plan Disclosure [Line Items]
Asset allocation	39.20%
DB Pension Plans \| Equity securities
Defined Benefit Plan Disclosure [Line Items]
Asset allocation	38.70%
DB Pension Plans \| Real asset investments
Defined Benefit Plan Disclosure [Line Items]
Asset allocation	9.30%
DB Pension Plans \| Return-seeking fixed income
Defined Benefit Plan Disclosure [Line Items]
Asset allocation	7.10%
DB Pension Plans \| Liquid alternative investments
Defined Benefit Plan Disclosure [Line Items]
Asset allocation	4.30%
DB Pension Plans \| Cash and cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Asset allocation	1.40%
OPEB Plan
Defined Benefit Plan Disclosure [Line Items]
Asset allocation	100.00%
OPEB Plan \| Fixed-income securities
Defined Benefit Plan Disclosure [Line Items]
Asset allocation	37.60%
OPEB Plan \| Equity securities
Defined Benefit Plan Disclosure [Line Items]
Asset allocation	42.40%
OPEB Plan \| Real asset investments
Defined Benefit Plan Disclosure [Line Items]
Asset allocation	8.80%
OPEB Plan \| Return-seeking fixed income
Defined Benefit Plan Disclosure [Line Items]
Asset allocation	5.60%
OPEB Plan \| Liquid alternative investments
Defined Benefit Plan Disclosure [Line Items]
Asset allocation	3.70%
OPEB Plan \| Cash and cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Asset allocation	1.90%