XML 106 R91.htm IDEA: XBRL DOCUMENT v3.22.0.1
Retirement Plans (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 26, 2021
Dec. 27, 2020
Dec. 29, 2019
Retirement Benefits [Abstract]      
Company's contributions to defined-contribution plans $ 6.4 $ 5.7 $ 4.4