Goodwill and Other Intangible Assets (Narrative) (Details)	9 Months Ended
	Feb. 28, 2016 USD ($)
Goodwill and Other Intangible Assets [Abstract]
Future Amortization Expense, Year One	$ 28,000,000
Future Amortization Expense, Year Two	28,000,000
Future Amortization Expense, Year Three	28,000,000
Future Amortization Expense, Year Four	28,000,000
Future Amortization Expense, Year Five	28,000,000
Goodwill impairment	0
Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived intangible assets impairment	$ 0