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Employee Benefit Plans (Asset Strategy Allocation) (Details)
Dec. 31, 2021
Dec. 31, 2020
Defined Benefit Plan Disclosure [Line Items]    
Target allocation range 100.00%  
Percentage of plan assets by strategy 100.00% 100.00%
Domestic Equity    
Defined Benefit Plan Disclosure [Line Items]    
Percentage of plan assets by strategy 20.00% 23.00%
Domestic Equity | Minimum    
Defined Benefit Plan Disclosure [Line Items]    
Target allocation range 15.00%  
Domestic Equity | Maximum    
Defined Benefit Plan Disclosure [Line Items]    
Target allocation range 40.00%  
International Equity    
Defined Benefit Plan Disclosure [Line Items]    
Percentage of plan assets by strategy 17.00% 18.00%
International Equity | Minimum    
Defined Benefit Plan Disclosure [Line Items]    
Target allocation range 10.00%  
International Equity | Maximum    
Defined Benefit Plan Disclosure [Line Items]    
Target allocation range 25.00%  
Private Equity    
Defined Benefit Plan Disclosure [Line Items]    
Percentage of plan assets by strategy 12.00% 10.00%
Private Equity | Minimum    
Defined Benefit Plan Disclosure [Line Items]    
Target allocation range 0.00%  
Private Equity | Maximum    
Defined Benefit Plan Disclosure [Line Items]    
Target allocation range 15.00%  
Total Equity    
Defined Benefit Plan Disclosure [Line Items]    
Percentage of plan assets by strategy 49.00% 51.00%
Actual percentage of the fair value of total Plan assets held 57.00%  
Total Equity | Minimum    
Defined Benefit Plan Disclosure [Line Items]    
Target allocation range 30.00%  
Total Equity | Maximum    
Defined Benefit Plan Disclosure [Line Items]    
Target allocation range 70.00%  
Domestic Fixed Income    
Defined Benefit Plan Disclosure [Line Items]    
Percentage of plan assets by strategy 28.00% 25.00%
Domestic Fixed Income | Minimum    
Defined Benefit Plan Disclosure [Line Items]    
Target allocation range 10.00%  
Domestic Fixed Income | Maximum    
Defined Benefit Plan Disclosure [Line Items]    
Target allocation range 40.00%  
High Yield Fixed Income    
Defined Benefit Plan Disclosure [Line Items]    
Percentage of plan assets by strategy 7.00% 8.00%
High Yield Fixed Income | Minimum    
Defined Benefit Plan Disclosure [Line Items]    
Target allocation range 0.00%  
High Yield Fixed Income | Maximum    
Defined Benefit Plan Disclosure [Line Items]    
Target allocation range 25.00%  
Total Fixed Income    
Defined Benefit Plan Disclosure [Line Items]    
Percentage of plan assets by strategy 35.00% 33.00%
Actual percentage of the fair value of total Plan assets held 25.00%  
Total Fixed Income | Minimum    
Defined Benefit Plan Disclosure [Line Items]    
Target allocation range 10.00%  
Total Fixed Income | Maximum    
Defined Benefit Plan Disclosure [Line Items]    
Target allocation range 65.00%  
Real Estate    
Defined Benefit Plan Disclosure [Line Items]    
Percentage of plan assets by strategy 5.00% 5.00%
Actual percentage of the fair value of total Plan assets held 5.00%  
Real Estate | Minimum    
Defined Benefit Plan Disclosure [Line Items]    
Target allocation range 0.00%  
Real Estate | Maximum    
Defined Benefit Plan Disclosure [Line Items]    
Target allocation range 10.00%  
Other    
Defined Benefit Plan Disclosure [Line Items]    
Percentage of plan assets by strategy 11.00% 11.00%
Actual percentage of the fair value of total Plan assets held 13.00%  
Other | Minimum    
Defined Benefit Plan Disclosure [Line Items]    
Target allocation range 0.00%  
Other | Maximum    
Defined Benefit Plan Disclosure [Line Items]    
Target allocation range 20.00%