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Postretirement Plans - Schedule of Assumed Health Care Cost Trend Rates (Details)
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Retirement Benefits, Description [Abstract]      
Health care cost trend rate assumed next year 5.50% 5.50% 4.50%
Ultimate trend rate 4.50% 4.50% 4.50%