Investments (Tables)

12 Months Ended

May 31, 2014

Equity Method And Cost Method Investments [Abstract]

Schedule of cost and equity method investments

The following table summarizes the Company’s investments as of May 31: 

	2014		2013
Cost method investments:
UK-based	$	—	$	5.0
Total cost method investments	$	—	$	5.0
Equity method investments:
UK-based	$	18.3	$	14.6
Other	0.1		0.0
Total equity method investments	$	18.4	$	14.6
Total	$	18.4	$	19.6