PENSION AND POSTRETIREMENT BENEFITS - Schedule of Other Changes in Plan Assets and Benefit Obligations (Details) - USD ($) $ in Millions	12 Months Ended
	May 30, 2021	May 31, 2020	May 26, 2019
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]
Currency translation adjustments	$ 51.8	$ (41.3)	$ 0.2
Net amount recognized	68.8	43.2	$ (34.0)
Pension Plans
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]
Net actuarial gain (loss)	92.0	21.9
Amortization of prior service cost (benefit)	2.3	2.7
Settlement and curtailment loss (gain)	0.2	(1.3)
Recognized net actuarial loss (gain)	0.8	44.8
Currency translation adjustments	(0.2)	0.0
Net amount recognized	95.1	68.1
Postretirement Plans
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]
Net actuarial gain (loss)	2.5	(2.9)
Amortization of prior service cost (benefit)	(2.1)	(2.1)
Settlement and curtailment loss (gain)	(0.5)	(0.2)
Recognized net actuarial loss (gain)	(3.5)	(4.6)
Currency translation adjustments	(0.2)	0.0
Net amount recognized	$ (3.8)	$ (9.8)