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Defined Benefit Plans - Assumed Health Care Cost Trend Rates Used to Determine Benefit Obligations and Net Cost (Detail) - Postretirement Benefits [Member]
 12 Months Ended
Dec. 30, 2023
Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items]    
Rate that the cost trend rate is assumed to decline (the ultimate trend rate) 4.50% 4.50%
Year that the rate reaches the ultimate trend rate 2033 2028
Rate that the cost trend rate is assumed to decline (the ultimate trend rate) 4.50% 4.50%
Year that the rate reaches the ultimate trend rate 2028 2028
Pre Age Sixty Five    
Defined Benefit Plan Disclosure [Line Items]    
Health care cost trend rate assumed for next year [1] 7.30% 5.80%
Health care cost trend rate assumed for next year [1] 5.80% 6.00%
Post Age Sixty Five    
Defined Benefit Plan Disclosure [Line Items]    
Health care cost trend rate assumed for next year [1] 6.90% 6.30%
Health care cost trend rate assumed for next year [1] 6.30% 6.50%
[1] The pre-65 initial health care cost trend rate is shown first / followed by the post-65 rate