COMMITMENTS AND GUARANTEES - Lease Cost (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 03, 2021	Jun. 27, 2020	Jul. 03, 2021	Jun. 27, 2020
Commitments and Guarantees [Abstract]
Operating lease cost	$ 39.7	$ 37.3	$ 77.5	$ 74.9
Short-term lease cost	5.9	6.0	11.5	12.8
Variable lease cost	1.7	1.8	3.3	3.8
Sublease income	(0.5)	(0.2)	(1.0)	(0.4)
Total lease cost	$ 46.8	$ 44.9	$ 91.3	$ 91.1