SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Schedule of Accumulated Balances for Each Component of Other Comprehensive Income (Loss), Net of Tax (Details) - USD ($) $ in Millions	Aug. 25, 2019	May 26, 2019	Aug. 26, 2018	May 27, 2018
Accumulated Other Comprehensive Income Loss [Line Items]
Accumulated balances	$ 7,516.8	$ 7,463.7	$ 3,815.0	$ 3,756.6
Currency translation losses, net of reclassification adjustments
Accumulated Other Comprehensive Income Loss [Line Items]
Accumulated balances	(99.8)	(90.9)
Derivative adjustments, net of reclassification adjustments
Accumulated Other Comprehensive Income Loss [Line Items]
Accumulated balances	32.2	34.0
Pension and post-employment benefit obligations, net of reclassification adjustments
Accumulated Other Comprehensive Income Loss [Line Items]
Accumulated balances	(64.8)	(53.4)
Accumulated other comprehensive loss
Accumulated Other Comprehensive Income Loss [Line Items]
Accumulated balances	$ (132.4)	$ (110.3)	$ (155.7)	$ (110.5)