RESTRUCTURING ACTIVITIES (Liabilities for Initiatives and Changes) (Details) (SCAE Plan, USD $) In Millions, unless otherwise specified	6 Months Ended
	Nov. 23, 2014
Restructuring Cost and Reserve [Line Items]
Balance at	$ 64.1
Costs Incurred and Charged to Expense	21.7
Costs Paid or Otherwise Settled	(44.6)
Changes in Estimates	(4.3)
Balance at	36.9
Severance
Restructuring Cost and Reserve [Line Items]
Balance at	46.9
Costs Incurred and Charged to Expense	8.7
Costs Paid or Otherwise Settled	(33.6)
Changes in Estimates	(3.0)
Balance at	19.0
Multi-employer pension costs
Restructuring Cost and Reserve [Line Items]
Balance at	11.2
Costs Incurred and Charged to Expense	0
Costs Paid or Otherwise Settled	0
Changes in Estimates	0.2
Balance at	11.4
Other costs
Restructuring Cost and Reserve [Line Items]
Balance at	6.0
Costs Incurred and Charged to Expense	13.0
Costs Paid or Otherwise Settled	(11.0)
Changes in Estimates	(1.5)
Balance at	$ 6.5