Retirement and Other Postretirement Benefit Plans - Schedule of Actual Allocations for the Pension Assets and Target Allocations by Asset Class (Details)	Dec. 31, 2021	Dec. 31, 2020
Change in plan assets:
Percentage of Plan Assets	100.00%	100.00%
Percentage of Plan Assets	100.00%	100.00%
Diversified Growth Funds
Change in plan assets:
Percentage of Plan Assets	3.40%	29.50%
Percentage of Plan Assets	3.40%	27.10%
Index Linked Gilts
Change in plan assets:
Percentage of Plan Assets	0.60%
Percentage of Plan Assets	0.60%
Liability Driven Investments
Change in plan assets:
Percentage of Plan Assets		20.50%
Percentage of Plan Assets		23.90%
All Other Regions Equity Fund
Change in plan assets:
Percentage of Plan Assets		5.10%
Percentage of Plan Assets		5.10%
U.K. Equity Fund
Change in plan assets:
Percentage of Plan Assets		2.20%
Percentage of Plan Assets		2.20%
Diversified Investment, Funds
Change in plan assets:
Percentage of Plan Assets	1.00%	1.10%
Percentage of Plan Assets	1.00%	1.10%
Insurance contracts
Change in plan assets:
Percentage of Plan Assets	94.20%	40.60%
Percentage of Plan Assets	94.20%	40.60%
Cash and Cash Equivalents
Change in plan assets:
Percentage of Plan Assets	0.80%	1.00%
Percentage of Plan Assets	0.80%

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 55
-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=123450688&loc=d3e4179-114921

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)(i)
-URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920

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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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)(i)
-URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920

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