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Employee Benefit Plans (Schedule of Allocation of Plan Assets) (Details)	Dec. 31, 2021	Dec. 31, 2020
Pension Benefit Plan [Member]
Allocation of plan assets	100.00%	100.00%
Pension Benefit Plan [Member] | Commodities [Member]
Allocation of plan assets	1.50%	0.70%
Target plan allocations	5.00%
Pension Benefit Plan [Member] | Cash [Member]
Allocation of plan assets	1.00%	1.20%
Target plan allocations	2.00%
Pension Benefit Plan [Member] | Debt Securities [Member]
Allocation of plan assets	37.90%	37.50%
Target plan allocations	38.00%
Pension Benefit Plan [Member] | Equity Securities [Member]
Allocation of plan assets	59.60%	60.60%
Target plan allocations	55.00%
Other Benefits Plan [Member]
Allocation of plan assets	100.00%	100.00%
Other Benefits Plan [Member] | Commodities [Member]
Allocation of plan assets	0.00%	0.00%
Target plan allocations	5.00%
Other Benefits Plan [Member] | Cash [Member]
Allocation of plan assets	2.50%	6.70%
Target plan allocations	2.00%
Other Benefits Plan [Member] | Debt Securities [Member]
Allocation of plan assets	30.70%	31.00%
Target plan allocations	50.00%
Other Benefits Plan [Member] | Equity Securities [Member]
Allocation of plan assets	66.80%	62.30%
Target plan allocations	43.00%

X

- 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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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=123447040&loc=d3e1928-114920

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