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Revenue Accounting for Contracts - Contract Liabilities (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Jul. 02, 2021
Jun. 26, 2020
Jul. 02, 2021
Jun. 26, 2020
Revenue from Contract with Customer [Abstract]        
Revenue recognized included in contract liability $ 24.8 $ 42.4 $ 380.4 $ 352.9