XML 99 R83.htm IDEA: XBRL DOCUMENT v3.22.4
Other Postretirement Benefits - Schedule of Health Care Cost Trend Rates (Details) - Other Postretirement Benefit Plans
12 Months Ended
Dec. 31, 2022
Dec. 26, 2021
Other Postretirement Benefits    
Health-care cost trend rate 6.75% 5.99%
Rate to which the cost trend rate is assumed to decline (ultimate trend rate) 4.92% 4.92%
Year that the rate reaches the ultimate trend rate 2030 2030