RESTRUCTURING ACTIVITIES - Schedule of Liabilities Recorded for the SCAE Plan (Details) - USD ($) $ in Millions	12 Months Ended
	May 26, 2019	May 27, 2018
Restructuring Reserve
Costs Incurred and Charged to Expense		$ 48.2
Pinnacle Integration Restructuring Plan
Restructuring Reserve
Beginning balance	$ 0.0
Costs Incurred and Charged to Expense	172.6
Costs Paid or Otherwise Settled	(66.0)
Changes in Estimates	(9.1)
Ending balance	97.5	0.0
Pinnacle Integration Restructuring Plan | Severance and related costs
Restructuring Reserve
Beginning balance	0.0
Costs Incurred and Charged to Expense	121.2
Costs Paid or Otherwise Settled	(35.2)
Changes in Estimates	(9.1)
Ending balance	76.9	0.0
Pinnacle Integration Restructuring Plan | Contract/lease cancellation
Restructuring Reserve
Beginning balance	0.0
Costs Incurred and Charged to Expense	1.1
Costs Paid or Otherwise Settled	(0.1)
Changes in Estimates	0.0
Ending balance	1.0	0.0
Pinnacle Integration Restructuring Plan | Consulting/professional fees
Restructuring Reserve
Beginning balance	0.0
Costs Incurred and Charged to Expense	38.3
Costs Paid or Otherwise Settled	(19.9)
Changes in Estimates	0.0
Ending balance	18.4	0.0
Pinnacle Integration Restructuring Plan | Other costs
Restructuring Reserve
Beginning balance	0.0
Costs Incurred and Charged to Expense	12.0
Costs Paid or Otherwise Settled	(10.8)
Changes in Estimates	0.0
Ending balance	$ 1.2	$ 0.0