XML 42 R28.htm IDEA: XBRL DOCUMENT v3.24.3
Pension And Other Postretirement Benefits (Narrative) (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Dec. 31, 2023
Pension Benefits [Member]          
Defined Benefit Plan Disclosure [Line Items]          
Required term of service to be eligible for plan match     one year of service and 1,000 hours of service    
Employer contributions $ 20,000,000.0 $ 80,000,000.0 $ 41,100,000 $ 103,900,000  
Postretirement Benefits [Member]          
Defined Benefit Plan Disclosure [Line Items]          
Plan assets $ 0   $ 0   $ 0