Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

+ Details

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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=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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- 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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Pensions and Other Employee Benefits Plans (Pension Plans' Actual and Targeted Asset Allocations) (Details)	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items]
Actual Allocation	100.00%	100.00%
Target Allocation	100.00%
Liquid Return Seeking [Member]
Defined Benefit Plan Disclosure [Line Items]
Actual Allocation	61.00%
Target Allocation	56.50%
Liquid Return Seeking [Member] \| Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	45.00%
Liquid Return Seeking [Member] \| Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	65.00%
Alternative Investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Actual Allocation	10.00%	9.00%
Target Allocation	14.50%
Alternative Investments [Member] \| Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	0.00%
Alternative Investments [Member] \| Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	20.00%
Fixed Income Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Actual Allocation	29.00%
Target Allocation	29.00%
Fixed Income Securities [Member] \| Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	20.00%
Fixed Income Securities [Member] \| Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	40.00%