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Retirement Plans - Plans with Accumulated/Projected Benefit Obligations Exceeding Fair Value of Plan Assets (Details) - USD ($)
$ in Millions
Dec. 30, 2023
Dec. 31, 2022
Pension plans with accumulated benefit obligations exceeding the fair value of plan assets    
Accumulated benefit obligation $ 336 $ 326
Fair value of plan assets 0 0
Pension plans with projected benefit obligation exceeding the fair value of plan assets    
Projected benefit obligation 652 597
Fair value of plan assets $ 292 $ 252