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Employee Benefit Plans - Actual and Target Allocations of Plan Assets (Details)	Dec. 31, 2021	Dec. 31, 2020
Defined Benefit Plan, Plan Assets, Allocations [Abstract]
Actual plan asset allocations	100.00%	100.00%
Target plan asset allocations	100.00%
Return-seeking investments
Defined Benefit Plan, Plan Assets, Allocations [Abstract]
Actual plan asset allocations	29.00%	22.00%
Target plan asset allocations	30.00%
Liability hedging investments
Defined Benefit Plan, Plan Assets, Allocations [Abstract]
Actual plan asset allocations	69.00%	77.00%
Target plan asset allocations	70.00%
Other
Defined Benefit Plan, Plan Assets, Allocations [Abstract]
Actual plan asset allocations	2.00%	1.00%
Target plan asset allocations	0.00%

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- References

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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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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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