Employee Benefit Plans - Additional Information (Detail) (USD $)	3 Months Ended			9 Months Ended
	Mar. 30, 2013	Sep. 29, 2012 Location	Mar. 31, 2012 Location	Mar. 30, 2013 Location	Mar. 31, 2012
Multiemployer Plans [Line Items]
Employer contribution for pension plan				$ 7,500,000
Location to discontinue our participation in Central States MEPP ( in numbers)		2	2
Redundant branch facilities closed ( in numbers)			2
Remaining location participating in Central States MEPP (in numbers)				1
Pension withdrawal and associated expenses	0		24,004,000	0	24,004,000
Period of payment of withdrawal liability (in years)			20 years
Multi-Employer Pension Plans | Minimum
Multiemployer Plans [Line Items]
Estimated share of undiscounted, unfunded vested benefits under all the MEPPs	3,000,000			3,000,000
Multi-Employer Pension Plans | Maximum
Multiemployer Plans [Line Items]
Estimated share of undiscounted, unfunded vested benefits under all the MEPPs	$ 4,000,000			$ 4,000,000