SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Schedule of Accumulated Balances for Each Component of Other Comprehensive Income (Loss), Net of Tax (Details) - USD ($) $ in Millions	12 Months Ended
	May 27, 2018	May 28, 2017	May 29, 2016	May 31, 2015
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss	$ 3,756.6	$ 4,077.8	$ 3,794.8	$ 4,610.0
Retained Earnings
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss	4,744.9	4,247.0	3,218.3	4,331.1
Accumulated other comprehensive loss 1
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss	(110.5)	(212.9)	(344.5)	$ (329.5)
Currency translation losses, net of reclassification adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss	(94.7)	(98.6)	(95.2)
Derivative adjustments, net of reclassification adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss	1.0	(1.1)	(0.4)
Unrealized gains (losses) on available-for-sale securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss	0.6	(0.3)	(0.6)
Pension and post-employment benefit obligations, net of reclassification adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss	(17.4)	$ (112.9)	$ (248.3)
ASU 2018-02 | Retained Earnings
Accumulated Other Comprehensive Income (Loss) [Line Items]
Stranded tax effects from change in tax rate	$ 17.4