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Postretirement Benefit Plans (Target Allocations) (Details)	Dec. 31, 2022	Dec. 31, 2021
Equity securities
Defined Benefit Plan Disclosure
Actual allocation of plan assets	47.10%	23.00%
Fixed income
Defined Benefit Plan Disclosure
Actual allocation of plan assets	43.90%	21.90%
Cash and other
Defined Benefit Plan Disclosure
Actual allocation of plan assets	9.00%	55.10%
Minimum | Equity securities
Defined Benefit Plan Disclosure
Target allocation percentages	35.00%
Minimum | Fixed income
Defined Benefit Plan Disclosure
Target allocation percentages	45.00%
Minimum | Cash and other
Defined Benefit Plan Disclosure
Target allocation percentages	0.00%
Maximum | Equity securities
Defined Benefit Plan Disclosure
Target allocation percentages	75.00%
Maximum | Fixed income
Defined Benefit Plan Disclosure
Target allocation percentages	70.00%
Maximum | Cash and other
Defined Benefit Plan Disclosure
Target allocation percentages	15.00%

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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 https://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 https://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 https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920

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