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Pension and Postretirement Benefit Plans (Weighted Average Asset Allocation) (Details) - Pension plan	Dec. 31, 2023	Dec. 31, 2022
U.S.
Defined Benefit Plan, Plan Assets, Category [Line Items]
Asset allocation	100.00%	100.00%
U.S. | Equity securities
Defined Benefit Plan, Plan Assets, Category [Line Items]
Asset allocation	0.00%	10.00%
U.S. | Fixed income securities
Defined Benefit Plan, Plan Assets, Category [Line Items]
Asset allocation	89.00%	79.00%
U.S. | Other investments
Defined Benefit Plan, Plan Assets, Category [Line Items]
Asset allocation	11.00%	11.00%
U.K
Defined Benefit Plan, Plan Assets, Category [Line Items]
Asset allocation	100.00%	100.00%
U.K | Equity securities
Defined Benefit Plan, Plan Assets, Category [Line Items]
Asset allocation	11.00%	11.00%
U.K | Fixed income securities
Defined Benefit Plan, Plan Assets, Category [Line Items]
Asset allocation	82.00%	80.00%
U.K | Other investments
Defined Benefit Plan, Plan Assets, Category [Line Items]
Asset allocation	7.00%	9.00%

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+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 17
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480482/715-20-55-17

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)(ii)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480506/715-20-50-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)(iv)(01)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480506/715-20-50-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)(iv)(03)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480506/715-20-50-1

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)(i)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480506/715-20-50-1

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