Retirement Plans and Postretirement Medical Benefits (Target Asset Allocation) (Details)	Dec. 31, 2025	Dec. 31, 2024
United States
Defined Benefit Plan Disclosure [Line Items]
Target allocation	0.00%
Percent of Plan Assets	100.00%	100.00%
United States \| Equities
Defined Benefit Plan Disclosure [Line Items]
Target allocation	0.00%
Percent of Plan Assets	0.00%	15.00%
United States \| Multi-asset credit
Defined Benefit Plan Disclosure [Line Items]
Target allocation	0.00%
Percent of Plan Assets	0.00%	2.00%
United States \| Fixed income
Defined Benefit Plan Disclosure [Line Items]
Target allocation	0.00%
Percent of Plan Assets	14.00%	77.00%
United States \| Annuity
Defined Benefit Plan Disclosure [Line Items]
Target allocation	0.00%
Percent of Plan Assets	85.00%	0.00%
United States \| Real estate
Defined Benefit Plan Disclosure [Line Items]
Target allocation	0.00%
Percent of Plan Assets	1.00%	5.00%
United States \| Private equity
Defined Benefit Plan Disclosure [Line Items]
Target allocation	0.00%
Percent of Plan Assets	0.00%	1.00%
Foreign
Defined Benefit Plan Disclosure [Line Items]
Target allocation	100.00%
Percent of Plan Assets	100.00%	100.00%
Foreign \| Multi-asset credit
Defined Benefit Plan Disclosure [Line Items]
Target allocation	4.00%
Percent of Plan Assets	4.00%	6.00%
Foreign \| Global equities
Defined Benefit Plan Disclosure [Line Items]
Target allocation	5.00%
Percent of Plan Assets	5.00%	6.00%
Foreign \| Fixed income
Defined Benefit Plan Disclosure [Line Items]
Target allocation	55.00%
Percent of Plan Assets	55.00%	53.00%
Foreign \| Real estate
Defined Benefit Plan Disclosure [Line Items]
Target allocation	10.00%
Percent of Plan Assets	10.00%	15.00%
Foreign \| Diversified Growth Funds
Defined Benefit Plan Disclosure [Line Items]
Target allocation	25.00%
Percent of Plan Assets	25.00%	16.00%
Foreign \| Cash
Defined Benefit Plan Disclosure [Line Items]
Target allocation	1.00%
Percent of Plan Assets	1.00%	4.00%

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Percentage of target investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan.

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Percentage of actual investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan.

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