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Retirement Benefits (Schedule of Target Plan Allocation) (Details)
Dec. 31, 2022
Dec. 31, 2021
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%