Derivative Instruments and Hedging Activities - Additional Information (Detail) In Millions, unless otherwise specified	3 Months Ended												3 Months Ended
	Aug. 31, 2012 USD ($)	May 31, 2012 USD ($)	Sep. 25, 2007 USD ($)	Sep. 25, 2007 EUR (€)	Aug. 31, 2012 Short-term [Member] USD ($)	May 31, 2012 Short-term [Member] USD ($)	Aug. 31, 2012 Long-term [Member] USD ($)	May 31, 2012 Long-term [Member] USD ($)	Aug. 31, 2012 Credit valuation adjustment [Member] USD ($)	May 31, 2012 Credit valuation adjustment [Member] USD ($)	Aug. 31, 2012 Swap agreements [Member]	May 31, 2012 Swap agreements [Member]	Aug. 31, 2012 Euro term loan [Member] EUR (€)	Aug. 31, 2012 Euro term loan [Member] USD ($)	May 31, 2012 Euro term loan [Member]	Sep. 25, 2007 Euro term loan [Member] USD ($)	Sep. 25, 2007 Euro term loan [Member] EUR (€)	Aug. 31, 2012 U.S. dollar term loan [Member]
Derivative Instruments And Hedging Activities [Line Items]
Hedged portion of net investment			$ 1,690.0	€ 1,238.0									€ 1,806.4	$ 2,263.8		$ 1,207.4	€ 875.0
Outstanding principal balance													833.4	1,044.4
Difference unhedged													973.0	1,219.4
Swap liability	(80.4)	(76.2)			30.2	36.0	53.2	41.0	3.0	0.8
Effective interest rate	58.10%													32.40%	3.83%			3.57%
Effective interest rate amount	1,295.0												270.0
Term loan fixed interest rate														8.12%				7.18%
Effective weighted average interest rate on all outstanding debt, including the interest rate swaps											7.54%	7.80%
Derivatives not designated as hedging instruments on a gross basis assets	0.1
Derivatives not designated as hedging instruments prepaid expenses and other and liabilities	$ 0.1