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Retirement Benefit Plans (Actual Allocation Percentage and Target Allocation Percentage for the U.S. Pension Plan Assets) (Details) - Pension Plan | Dec. 31, 2023 | Dec. 31, 2022
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Fixed income securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Actual allocation | 99.10% | 34.10%
Cash equivalents |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Actual allocation | 0.30% | 0.00%
Money market funds |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Actual allocation | 0.60% | 0.50%
U.S. equity securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Actual allocation | 0.00% | 44.90%
Non-U.S. equity securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Actual allocation | 0.00% | 20.50%
Minimum | Fixed income securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Actual allocation percentage | 90.00% |
Minimum | Cash equivalents |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Actual allocation percentage | 0.00% |
Minimum | Money market funds |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Actual allocation percentage | 0.00% |
Minimum | U.S. equity securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Actual allocation percentage | 0.00% |
Minimum | Non-U.S. equity securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Actual allocation percentage | 0.00% |
Maximum | Fixed income securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Actual allocation percentage | 100.00% |
Maximum | Cash equivalents |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Actual allocation percentage | 5.00% |
Maximum | Money market funds |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Actual allocation percentage | 10.00% |
Maximum | U.S. equity securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Actual allocation percentage | 0.00% |
Maximum | Non-U.S. equity securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Actual allocation percentage | 0.00% |

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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 -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 17 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480482/715-20-55-17 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(i) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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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 -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(i) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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