Convertible Senior Notes, Warrants, and Hedges (Offering) (Details)			3 Months Ended
	Nov. 04, 2015 USD ($) trading_day $ / shares	Nov. 03, 2015 USD ($)	Jul. 03, 2016 USD ($)	Jun. 28, 2015 USD ($)	Oct. 29, 2015 USD ($)
Debt Instrument [Line Items]
Costs of Bond Hedges offset by proceeds from Warrant Transactions		$ 37,400,000
Cost of shares repurchased			$ 30,600,000	$ 30,600,000
Conversion ratio on convertible debt	0.029892
Convertible debt | 0.875% Convertible Senior Notes Due 2022
Debt Instrument [Line Items]
Principal amount of debt		48,800,000	$ 373,800,000		$ 325,000,000
Interest rate			0.875%		0.875%
Convertible Notes, net		363,445,000
Number of trading days threshold to trigger option to convert convertible debt | trading_day	20
Number of consecutive trading days threshold to trigger option to convert convertible debt	30 days
Threshold percentage of stock price trigger to convert convertible debt	130.00%
Number of business days threshold to trigger option to convert convertible debt	5
Number of consecutive days in measurement period to trigger option to convert convertible debt	5 days
Threshold percentage of product of sale of price of common stock and conversion rate to trigger to convert convertible debt (less than)	98.00%
Stock price trigger to convert convertible debt (in dollars per share) | $ / shares	$ 33.45
Convertible debt holder required repurchase, principal amount increments	$ 1,000
Convertible debt holder required repurchase, percent of principal	100.00%
Convertible debt holders in default, percent of principal amount	25.00%
Convertible debt in default, percent holders to declare due and payable	100.00%
Convertible debt in bankruptcy, insolvency, and reorganization, percent due and payable	100.00%
Fair value, discount rate			5.50%
Interest rate	5.50%
Liability component			$ 274,400,000
Equity component		96,578,000	$ 99,300,000
October 2015 Stock Repurchase Program
Debt Instrument [Line Items]
Cost of shares repurchased		300,000,000
Privately Negotiated Repurchases With Convertible Notes Buyer
Debt Instrument [Line Items]
Cost of shares repurchased		75,000,000
Accelerated Share Repurchase Program
Debt Instrument [Line Items]
Cost of shares repurchased		$ 225,000,000