Schedule of Carrying Value of Convertible Senior Notes and Other Long-Term Debt (Detail) (USD $) In Millions, unless otherwise specified	Mar. 30, 2014	Jun. 30, 2013	Mar. 30, 2014 0.50% Notes due 2016	Jun. 30, 2013 0.50% Notes due 2016	May 31, 2011 0.50% Notes due 2016	Mar. 30, 2014 1.25% Notes due 2018	Jun. 30, 2013 1.25% Notes due 2018	May 31, 2011 1.25% Notes due 2018	Mar. 30, 2014 2.625% Notes due 2041	Jun. 30, 2013 2.625% Notes due 2041	Jun. 24, 2012 2.625% Notes due 2041
Debt Instrument [Line Items]
Notes due			$ 450.0	$ 450.0	$ 450.0	$ 450.0	$ 450.0	$ 450.0	$ 699.9	$ 699.9	$ 700.0
Less: Unamortized interest discount			(34.3)	(45.7)		(66.3)	(76.9)		(184.2)	(186.9)
Net carrying amount of Notes			415.7	404.3		383.7	373.1		515.7	513.0
Total long-term debt	1,315.1	1,290.4
Less: current portion of debt	(515.7)	(513.0)
Long-term debt	$ 799.4	$ 777.4