Derivative Financial Instruments - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Dec. 29, 2012	Dec. 29, 2012 Maximum [Member]	Dec. 29, 2012 Minimum [Member]	Dec. 29, 2012 Accrued expenses [Member]	Jun. 30, 2012 Accrued expenses [Member]	Dec. 29, 2012 Other assets [Member]	Jun. 30, 2012 Other assets [Member]	Dec. 29, 2012 Interest rate swap contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Percentage of outstanding variable rate debt modified	6.80%
Accrued expenses on interest rate swap contracts				$ 1.6	$ 1.4
Other assets on interest rate swap contracts						0.6	0
Net loss deferred in accumulated other comprehensive income	0.6
Loss expected to be reclassified to interest expense	0.4
Notional amount of interest rate swap contracts to pay fixed rates of interest and to receive variable rates of interest								160.0
Forward starting interest rate swap contracts								145.0
Notional amount of derivatives maturing in the next 12 months	15.0
Notional amount of derivatives maturing in the next 25-36 months	75.0
Notional amount of derivatives maturing after 60 months	$ 70.0
Average rate on interest rate swap contracts	1.73%
Maturity period of notional amount of interest rate swap 1		12 months
Maturity period of notional amount of interest rate swap 3		36 months	25 months
Maturity period of notional amount of interest rate swap 5			60 months