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Other charges (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 25, 2022
Sep. 26, 2021
Sep. 25, 2022
Sep. 26, 2021
Other Income and Expenses [Abstract]        
Other charges $ 0.0 $ 0.0 $ 0.0 $ 1.1