Goodwill and Intangible Assets - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended
Dec. 29, 2012	Dec. 31, 2011	Dec. 29, 2012	Dec. 31, 2011
Goodwill And Intangible Assets [Line Items]
Impairment losses recorded	$ 0	$ 0	$ 0	$ 0
Weighted average life of amortized intangible assets			12 years
Amortization expense			2.2	2.5
United States [Member]
Goodwill And Intangible Assets [Line Items]
Accumulated impairment losses	$ 107.0		$ 107.0

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Loss recognized during the period that results from the write-down of goodwill after comparing the implied fair value of reporting unit goodwill with the carrying amount of that goodwill. Goodwill is assessed at least annually for impairment.

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