Summary of Accounting Policies (Environmental Liabilities Narrative) (Details)	Dec. 31, 2025
Accounting Policies [Abstract]
Site Contingency, Disbursement Period, Estimate, Accrued	15 years

Period of disbursement over which accrued amount may be paid out for an individual site or group of sites, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 5.Y.Q2)
-SubTopic 20
-Topic 450
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480102/450-20-S99-1

Name:	us-gaap_SiteContingencyDisbursementPeriodEstimateAccrued
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant