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Postretirement Benefit Plans (Target Allocations) (Details) | Dec. 31, 2022 | Dec. 31, 2021
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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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- 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 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 + Details
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