Goodwill and Intangible Assets - Narrative (Details) - USD ($) $ in Millions		3 Months Ended
	Jul. 01, 2024	Dec. 29, 2024	Dec. 31, 2023	Sep. 29, 2024
Goodwill [Line Items]
Impairment of goodwill	$ 0.0
Percentage of excess of fair value over carrying value (less than)	72.00%
Amortization expense		$ 10.7	$ 12.5
GSG
Goodwill [Line Items]
Gross amounts of goodwill		764.4		$ 768.5
Accumulated impairment		17.7		17.7
CIG
Goodwill [Line Items]
Gross amounts of goodwill		1,343.5		1,417.3
Accumulated impairment		$ 121.5		$ 121.5