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Fair Value Measurements - Schedule of carrying amounts and estimated fair values of the Senior Notes (Detail) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Sep. 30, 2023	Jun. 24, 2023	Dec. 02, 2021
Debt Instrument [Line Items]
Carrying Amount			$ 600.0
Estimated Fair Value	$ 23.1	$ 9.6
Level 2 Member
Debt Instrument [Line Items]
Carrying Amount	975.6	978.0
Estimated Fair Value	906.9	912.5
Senior Notes [Member] | Level 2 Member
Debt Instrument [Line Items]
Carrying Amount	395.8	395.6
Estimated Fair Value	$ 328.5	$ 337.2
Debt due date	2029	2029
Term Loan [Member] | Level 2 Member
Debt Instrument [Line Items]
Carrying Amount	$ 579.8	$ 582.4
Estimated Fair Value	$ 578.4	$ 575.3
Debt due date		2028

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