RESTRUCTURING ACTIVITIES (Liabilities for Initiatives and Changes) (Details) - SCAE Plan $ in Millions	12 Months Ended
	May. 31, 2015 USD ($)
Restructuring Reserve [Roll Forward]
Beginning balance	$ 64.1
Costs Incurred and Charged to Expense	45.2
Costs Paid or Otherwise Settled	(65.2)
Changes in Estimates	(6.8)
Ending balance	37.3
Multi-employer pension costs
Restructuring Reserve [Roll Forward]
Beginning balance	11.2
Costs Incurred and Charged to Expense	1.5
Costs Paid or Otherwise Settled	(1.5)
Changes in Estimates	0.2
Ending balance	11.4
Severance and related costs
Restructuring Reserve [Roll Forward]
Beginning balance	46.9
Costs Incurred and Charged to Expense	19.1
Costs Paid or Otherwise Settled	(45.5)
Changes in Estimates	(4.1)
Ending balance	16.4
Other costs
Restructuring Reserve [Roll Forward]
Beginning balance	6.0
Costs Incurred and Charged to Expense	24.6
Costs Paid or Otherwise Settled	(18.2)
Changes in Estimates	(2.9)
Ending balance	$ 9.5