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Employee Benefit Plans - Narrative (Details)
6 Months Ended
Jun. 30, 2022
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]  
Expected long term rate of return 7.00%
Other Postretirement Benefits Plan  
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]  
Benefit based on highest average salary for number of consecutive years 5 years
Number of years for consecutive years calculation 10 years
Percent of annual salary to calculate benefit 2.00%
Postretirement Health Coverage  
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]  
Percentage of costs paid for retirees before 1993 100.00%