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Employee Benefits - Weighted-Average Rates to Determine Net Postretirement Benefit Cost (Details)
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]      
Discount rate 4.85% 2.43% 2.05%
Expected return on plan assets 4.50% 2.75% 2.75%
Other Postretirement Benefit Plans      
Defined Benefit Plan Disclosure [Line Items]      
Discount rate 4.50% 4.50% 4.50%
Expected return on plan assets 4.50% 4.50% 4.50%