Pension And Other Postretirement Benefits (Narrative) (Details) - USD ($) $ in Millions	6 Months Ended
Jun. 30, 2025	Jun. 30, 2024
Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Employer contributions	$ 1.0	$ 1.3
Other Postretirement Benefit Plan
Defined Benefit Plan Disclosure [Line Items]
Employer contributions	$ 10.5	$ 10.7

Amount of contribution received by defined benefit plan from employer which increases plan assets.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration