Pension and Postretirement Benefits - Weighted Average Asset Allocations and Target Asset Allocations by Asset Category (Details)	Dec. 31, 2023	Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items]
Asset allocations (as a percent)	100.00%	100.00%
Target asset allocations (as a percent)	100.00%	100.00%
Return-seeking assets
Defined Benefit Plan Disclosure [Line Items]
Asset allocations (as a percent)	36.00%	43.00%
Target asset allocations (as a percent)	37.00%	37.00%
Liability-hedging assets
Defined Benefit Plan Disclosure [Line Items]
Asset allocations (as a percent)	64.00%	57.00%
Target asset allocations (as a percent)	63.00%	63.00%

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- Definition

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.

+ 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)(i)
-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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