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Employee Benefit Plans - Pension Plan Weighted-Average Asset Allocations (Details) - DB Pension Plan	Dec. 31, 2020	Dec. 31, 2019
Defined Contribution Plan Disclosure [Line Items]
Weighted-average asset allocations	100.00%	100.00%
Equity securities
Defined Contribution Plan Disclosure [Line Items]
Weighted-average asset allocations	63.00%	62.00%
Debt securities
Defined Contribution Plan Disclosure [Line Items]
Weighted-average asset allocations	36.00%	36.00%
Other
Defined Contribution Plan Disclosure [Line Items]
Weighted-average asset allocations	1.00%	2.00%

X

- 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=118255775&loc=d3e1928-114920

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- Definition

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+ References

No definition available.

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