Debts and Letters of Credit (Detail)		3 Months Ended	12 Months Ended			48 Months Ended
	Aug. 21, 2013 USD ($)	Jun. 27, 2015 USD ($) item $ / shares	Jun. 27, 2015 USD ($) item $ / shares	Jun. 28, 2014 USD ($)	Jun. 29, 2013 USD ($)	Jun. 29, 2013 USD ($)	Aug. 17, 2015 $ / shares	Aug. 15, 2013 $ / shares	Jun. 05, 2006 USD ($) $ / shares
Debt details
Total long-term debt		$ 561,600,000	$ 561,600,000	$ 536,300,000
Loss on repurchase of Convertible Notes					$ (4,100,000)
Outstanding Letters of Credit
Number of standby letters of credit | item		11	11
Letters of credit outstanding		$ 29,000,000	$ 29,000,000
Revolving Credit Facility
Debt details
Revolving credit facility terminated	$ 250,000,000
Details of the Company's debt:
Unamortized portion of debt issuance cost	1,300,000
Outstanding Letters of Credit
Outstanding balance	$ 0
0.625% Senior Convertible Debentures due 2033 ("notes")
Debt details
Interest rate on senior convertible notes (as a percent)	0.625%	0.625%	0.625%	0.625%
Aggregate principal amount of convertible debt	$ 650,000,000
Proceeds from issuance of convertible notes after issuance costs	636,300,000
Conversion price of convertible debt (in dollars per share) | $ / shares		$ 18.83	$ 18.83				$ 11.28	$ 18.83
Conversion price of convertible debt as premium on closing price of common stock (as a percent)								40.00%
Principal amount used for debt instrument conversion	$ 1,000
Number of consecutive trading days during which the closing price of the entity's common stock must exceed the conversion price for at least 20 trading days in order for the notes to be redeemable	30 days
Number of consecutive business days immediately following any 10 consecutive trading day period	5 days
Number of consecutive trading days before five consecutive business-days	10 days
Number of note holders exercising conversion rights before expiration notice | item		0
Percentage of principal amount that the holder of the note may require the entity to repurchase the debt instrument	100.00%
Percentage of principal amount at which the entity may redeem some or all of the notes for cash	100.00%
Discount rate used to calculate the carrying value of the liability component of the convertible debt (as a percent)	5.40%
Variable rate basis on which discount rate is based			5-year swap
Effective interest rate (as a percent)		5.40%	5.40%	5.40%
Principal amount of notes		$ 650,000,000	$ 650,000,000	$ 650,000,000
Details of the Company's debt:
Principal amount of 0.625% Senior Convertible Notes		650,000,000	650,000,000	650,000,000
Unamortized discount of liability component		(88,400,000)	(88,400,000)	(113,700,000)
Carrying amount of liability component	$ 515,600,000	561,600,000	561,600,000	536,300,000
Carrying amount of equity component	134,400,000	134,400,000	$ 134,400,000	134,400,000
Remaining term of convertible notes			3 years 1 month 6 days
Deferred finance costs	13,700,000
Liability component, debt issuance cost	10,900,000
Equity component, debt issuance cost	$ 2,800,000
Fair market value of convertible debt		$ 644,000,000	$ 644,000,000	$ 653,000,000
Effective interest rate and interest expense for the contractual interest and the accretion of debt discount:
Effective interest rate (as a percent)		5.40%	5.40%	5.40%
Interest expense-contractual interest			$ 4,100,000	$ 3,500,000
Accretion of debt discount			25,300,000	$ 20,700,000
0.625% Senior Convertible Debentures due 2033 ("notes") | Other non-current assets
Details of the Company's debt:
Unamortized portion of debt issuance cost		$ 7,200,000	$ 7,200,000
0.625% Senior Convertible Debentures due 2033 ("notes") | Maximum
Debt details
Percentage of the conversion price that the closing price of the entity's common stock must exceed in order for the notes to be convertible			130.00%
Number of trading days within 30 consecutive trading days in which the closing price of the entity's common stock must exceed the conversion price for the notes to be redeemable | item			20
Percentage of the trading price to the closing sale price of the entity's common stock			98.00%
1% Senior Convertible Notes due 2026 (the "2026 Notes")
Debt details
Total long-term debt									$ 266,500,000
Interest rate on senior convertible notes (as a percent)		1.00%	1.00%						1.00%
Aggregate principal amount of convertible debt									$ 425,000,000
Proceeds from issuance of convertible notes after issuance costs									$ 415,900,000
Conversion price of convertible debt (in dollars per share) | $ / shares		$ 30.30	$ 30.30						$ 30.30
Discount rate used to calculate the carrying value of the liability component of the convertible debt (as a percent)									8.10%
Variable rate basis on which discount rate is based			7-year swap
Effective interest rate (as a percent)									8.10%
Principal amount of debt repurchased						$ 425,000,000
Principal amount of notes					0	0
Details of the Company's debt:
Principal amount of 0.625% Senior Convertible Notes					0	$ 0
Carrying value of the equity component of convertible debt									$ 158,500,000
Effective interest rate and interest expense for the contractual interest and the accretion of debt discount:
Effective interest rate (as a percent)									8.10%
Interest expense-contractual interest					1,800,000
Accretion of debt discount					$ 12,000,000