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Retirement Benefits (Schedule of Target Plan Allocation) (Details) | Dec. 31, 2022 | Dec. 31, 2021
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United States | Equity funds and securities | Minimum |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target plan asset allocations (in percentage) |  | 41.00%
United States | Equity funds and securities | Maximum |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target plan asset allocations (in percentage) |  | 62.00%
United States | Fixed income funds and securities | Minimum |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target plan asset allocations (in percentage) |  | 31.00%
United States | Fixed income funds and securities | Maximum |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target plan asset allocations (in percentage) |  | 47.00%
United States | Real estate funds | Minimum |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target plan asset allocations (in percentage) |  | 1.00%
United States | Real estate funds | Maximum |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target plan asset allocations (in percentage) |  | 1.00%
United States | Other | Minimum |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target plan asset allocations (in percentage) |  | 7.00%
United States | Other | Maximum |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target plan asset allocations (in percentage) |  | 10.00%
Int’l | Equity funds and securities | Minimum |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target plan asset allocations (in percentage) |  | 20.00%
Int’l | Equity funds and securities | Maximum |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target plan asset allocations (in percentage) |  | 50.00%
Int’l | Fixed income funds and securities | Minimum |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target plan asset allocations (in percentage) |  | 35.00%
Int’l | Fixed income funds and securities | Maximum |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target plan asset allocations (in percentage) |  | 100.00%
Int’l | Hedge funds | Minimum |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target plan asset allocations (in percentage) |  | 0.00%
Int’l | Hedge funds | Maximum |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target plan asset allocations (in percentage) |  | 7.00%
Int’l | Real estate funds | Minimum |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target plan asset allocations (in percentage) |  | 0.00%
Int’l | Real estate funds | Maximum |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target plan asset allocations (in percentage) |  | 10.00%
Int’l | Other | Minimum |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target plan asset allocations (in percentage) |  | 0.00%
Int’l | Other | Maximum |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target plan asset allocations (in percentage) |  | 34.00%
Scenario, Forecast | United States |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target plan asset allocations (in percentage) | 100.00% |
Scenario, Forecast | United States | Equity funds and securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target plan asset allocations (in percentage) | 52.00% |
Scenario, Forecast | United States | Equity funds and securities | Minimum |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target plan asset allocations (in percentage) | 41.00% |
Scenario, Forecast | United States | Equity funds and securities | Maximum |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target plan asset allocations (in percentage) | 62.00% |
Scenario, Forecast | United States | Fixed income funds and securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target plan asset allocations (in percentage) | 39.00% |
Scenario, Forecast | United States | Fixed income funds and securities | Minimum |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target plan asset allocations (in percentage) | 31.00% |
Scenario, Forecast | United States | Fixed income funds and securities | Maximum |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target plan asset allocations (in percentage) | 47.00% |
Scenario, Forecast | United States | Hedge funds |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target plan asset allocations (in percentage) | 0.00% |
Scenario, Forecast | United States | Real estate funds |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target plan asset allocations (in percentage) | 1.00% |
Scenario, Forecast | United States | Real estate funds | Minimum |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target plan asset allocations (in percentage) | 1.00% |
Scenario, Forecast | United States | Real estate funds | Maximum |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target plan asset allocations (in percentage) | 1.00% |
Scenario, Forecast | United States | Other |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target plan asset allocations (in percentage) | 8.00% |
Scenario, Forecast | United States | Other | Minimum |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target plan asset allocations (in percentage) | 7.00% |
Scenario, Forecast | United States | Other | Maximum |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target plan asset allocations (in percentage) | 10.00% |
Scenario, Forecast | Int’l |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target plan asset allocations (in percentage) | 100.00% |
Scenario, Forecast | Int’l | Equity funds and securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target plan asset allocations (in percentage) | 22.00% |
Scenario, Forecast | Int’l | Equity funds and securities | Minimum |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target plan asset allocations (in percentage) | 20.00% |
Scenario, Forecast | Int’l | Equity funds and securities | Maximum |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target plan asset allocations (in percentage) | 50.00% |
Scenario, Forecast | Int’l | Fixed income funds and securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target plan asset allocations (in percentage) | 53.00% |
Scenario, Forecast | Int’l | Fixed income funds and securities | Minimum |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target plan asset allocations (in percentage) | 30.00% |
Scenario, Forecast | Int’l | Fixed income funds and securities | Maximum |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target plan asset allocations (in percentage) | 100.00% |
Scenario, Forecast | Int’l | Hedge funds |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target plan asset allocations (in percentage) | 7.00% |
Scenario, Forecast | Int’l | Hedge funds | Minimum |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target plan asset allocations (in percentage) | 0.00% |
Scenario, Forecast | Int’l | Hedge funds | Maximum |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target plan asset allocations (in percentage) | 7.00% |
Scenario, Forecast | Int’l | Real estate funds |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target plan asset allocations (in percentage) | 5.00% |
Scenario, Forecast | Int’l | Real estate funds | Minimum |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target plan asset allocations (in percentage) | 0.00% |
Scenario, Forecast | Int’l | Real estate funds | Maximum |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target plan asset allocations (in percentage) | 10.00% |
Scenario, Forecast | Int’l | Other |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target plan asset allocations (in percentage) | 13.00% |
Scenario, Forecast | Int’l | Other | Minimum |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target plan asset allocations (in percentage) | 0.00% |
Scenario, Forecast | Int’l | Other | Maximum |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target plan asset allocations (in percentage) | 34.00% |

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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 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 + Details
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