Segment Reporting - Net Sales by Geography (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Nov. 30, 2014		Nov. 30, 2013		Nov. 30, 2014		Nov. 30, 2013
Net sales by geography:
Net sales	$ 843.6		$ 825.7		$ 1,618.4		$ 1,556.4
United States
Net sales by geography:
Net sales	512.4		493.1		1,007.5		963.0
Europe
Net sales by geography:
Net sales	206.1		211.8		367.4		363.3
International
Net sales by geography:
Net sales	$ 125.1	[1]	$ 120.8	[1]	$ 243.5	[1]	$ 230.1	[1]

[1] International primarily includes Canada, Latin America and the Asia Pacific region.