Employee Benefits - Schedule of Asset Allocation and Targeted Long Term Asset Allocation (Details)	Dec. 31, 2020	Dec. 31, 2019
Equities
Defined Benefit Plan Disclosure [Line Items]
Plan investments actual allocations	60.00%	33.00%
Plan investments target allocations	38.00%
Debt Securities
Defined Benefit Plan Disclosure [Line Items]
Plan investments actual allocations	31.00%	30.00%
Plan investments target allocations	30.00%
Absolute Return
Defined Benefit Plan Disclosure [Line Items]
Plan investments actual allocations	9.00%	37.00%
Plan investments target allocations	32.00%

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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.

+ 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=118257860&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=118255775&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.

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-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)(i)
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