Derivative Instruments and Hedging Activities (Tables)

6 Months Ended

Nov. 30, 2014

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Summary Existing Swap Agreements

The table below summarizes existing swap agreements at November 30, 2014 and May 31, 2014:

(in millions)						Fair Value at			Fair Value at
		Notional				November 30, 2014			May 31, 2014
Structure	Currency	Amount		Effective Date	Termination Date	Asset (Liability)			Asset (Liability)
5 years	USD	$	195.0	September 25, 2009	September 25, 2014	$	—		$	(1.7	)
2 years	USD	190.0		March 25, 2013	March 25, 2015	(0.4		)	(1.0		)
3 years	USD	270.0		December 27, 2013	September 25, 2016	(4.7		)	(5.8		)
5 years	USD	350.0		September 25, 2012	September 25, 2017	(5.3		)	(6.0		)
5 years	USD	350.0		September 25, 2012	September 25, 2017	(5.3		)	(5.9		)
Credit valuation adjustment						0.2			0.2
Total interest rate instruments						$	(15.5	)	$	(20.2	)

Schedule of Interest Rate Swap

The tables below summarize the effective portion and ineffective portion of the Company’s interest rate swaps before tax for the three and six months endedNovember 30, 2014 and 2013:

(in millions)	Three Months Ended					Six Months Ended
Derivatives in cash flow hedging relationship	November 30, 2014			November 30, 2013		November 30, 2014		November 30, 2013
Interest rate swaps:
Amount of gain (loss) recognized in OCI	$	(0.6	)	$	4.5	$	4.7	$	26.2
Amount of (gain) loss reclassified from accumulated OCI into interest expense (effective portion)	2.5			6.8		7.3		14.3
Amount (gain) loss recognized in other income (expense) (ineffective portion and amount excluded from effectiveness testing)	—			21.8		—		21.8