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Changes in Balance of Gross Unrecognized Tax Benefits (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jun. 29, 2014	Jun. 30, 2013	Jun. 24, 2012
Schedule of Unrecognized Tax Benefits [Line Items]
Beginning balance	$ 333.1	$ 343.8	$ 181.5
Settlements and effective settlements with tax authorities		(3.4)	(0.2)
Lapse of statute of limitations	(16.0)	(51.4)	(6.6)
Increases in balances related to tax positions taken during prior periods	6.2	11.3	1.4
Decreases in balances related to tax positions taken during prior periods	(4.2)	(11.3)	(4.3)
Increases in balances related to tax positions taken during current period	33.0	35.2	22.3
Tax positions assumed in Novellus transaction		8.9	149.7
Ending balance	$ 352.1	$ 333.1	$ 343.8

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Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns.

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