ACCUMULATED OTHER COMPREHENSIVE (LOSS) INCOME - (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 01, 2021	Oct. 02, 2020	Sep. 27, 2019
Changes In Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance at beginning of period	$ 465.8	$ 448.2	$ 428.3
Other comprehensive (loss) income before reclassifications	(0.4)	(3.8)
Amount reclassified out of other comprehensive income		1.5
Amount reclassified out of other comprehensive income - transaction remote		2.4
Income tax impact	0.1	(0.1)
Foreign currency translation adjustments	(0.7)	1.5	0.0
Ending balance	496.5	465.8	448.2
Unrealized Gain (Loss) on Derivative Financial Instruments
Changes In Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance at beginning of period	0.0	(0.4)
Other comprehensive (loss) income before reclassifications	0.0	(3.4)
Amount reclassified out of other comprehensive income		1.5
Amount reclassified out of other comprehensive income - transaction remote		2.4
Income tax impact	0.0	(0.1)
Foreign currency translation adjustments	0.0	0.0
Ending balance	0.0	0.0	(0.4)
Unrealized Gain (Loss) on Defined Benefit Obligations
Changes In Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance at beginning of period	(0.7)	(1.3)
Other comprehensive (loss) income before reclassifications	(0.1)	0.9
Amount reclassified out of other comprehensive income		0.0
Amount reclassified out of other comprehensive income - transaction remote		0.0
Income tax impact	0.0	(0.3)
Foreign currency translation adjustments	0.0	0.0
Ending balance	(0.8)	(0.7)	(1.3)
Currency Translation Adjustment
Changes In Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance at beginning of period	1.5	0.0
Other comprehensive (loss) income before reclassifications	(0.3)	(1.3)
Amount reclassified out of other comprehensive income		0.0
Amount reclassified out of other comprehensive income - transaction remote		0.0
Income tax impact	0.1	0.3
Foreign currency translation adjustments	(0.5)	2.5
Ending balance	0.8	1.5	0.0
Accumulated Other Comprehensive (Loss) Income
Changes In Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance at beginning of period	0.8	(1.7)
Ending balance	$ 0.0	$ 0.8	$ (1.7)