Debt - Additional Information (Detail) - USD ($) $ in Millions	1 Months Ended	3 Months Ended	9 Months Ended
	Mar. 31, 2015	May. 29, 2015	Nov. 28, 2014	Nov. 27, 2015	Feb. 28, 2015
Debt Disclosure [Line Items]
Letters of credit outstanding				$ 26.5
Unamortized financing fees written off		$ 1.8	$ 1.9
Capitalized new fees			1.1
Non Publicly Traded [Member]
Debt Disclosure [Line Items]
Carrying value of Corporation's non-publicly traded debt			373.0	276.8	$ 254.3
Non Publicly Traded [Member] | Level 2 [Member]
Debt Disclosure [Line Items]
Fair value of traded debt			369.6	$ 275.9	251.8
Term Loan Facility [Member]
Debt Disclosure [Line Items]
Interest on credit facility borrowings				2.70%
Voluntary prepayments on term loan facility	$ 65.0
Revolving Credit Facility [Member]
Debt Disclosure [Line Items]
Interest on credit facility borrowings				2.70%
Current borrowing capacity				$ 250.0
Publicly Traded [Member] | Level 1 [Member]
Debt Disclosure [Line Items]
Fair value of traded debt			238.0	234.7	238.2
Carrying value of Corporation's publicly traded debt			$ 225.2	225.2	$ 225.2
Accounts Receivable Facility [Member]
Debt Disclosure [Line Items]
Current borrowing capacity				$ 50.0