Acquisitions (Details) $ / shares in Units, $ in Thousands	6 Months Ended	12 Months Ended
	Dec. 28, 2013 USD ($) $ / shares	Jun. 27, 2015 USD ($) acquisitions	Jun. 28, 2014 USD ($) acquisitions	Jun. 29, 2013 USD ($) acquisitions
Business Acquisition [Line Items]
Number of Businesses Acquired | acquisitions		0	2	0
Business Combination, Acquisition Related Costs		$ 0	$ 6,983	$ 0
Goodwill acquired		$ 511,647	596,637	$ 422,004
Business Acquisition, Percentage of Voting Interests Acquired	100.00%
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net [Abstract]
Business Acquisition, Share Price | $ / shares	$ 23
Volterra [Member]
Business Acquisition [Line Items]
Cash paid	$ 593,250
Business Acquisition, Cash Paid for Employee's Vested Options	21,756
Business Combination, Consideration Transferred	615,006
Cash acquired	163,500
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables	23,453
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory	33,339
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets	17,151
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Accrued Liabilities	(35,343)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Income Tax Payable	(23,241)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other	(20,149)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net	158,710
Amortizable intangible assets acquired	226,900
In-process research and development acquired	56,200
Goodwill acquired	174,894
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable	(1,698)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net [Abstract]
Business Acquisition, Purchase Price Allocation, Assets Acquired (Liabilities Assumed), Net	615,006
Volterra [Member] | Intellectual property [Member]
Business Acquisition [Line Items]
Amortizable intangible assets acquired	$ 192,500
Acquired Finite-lived Intangible Asset, Weighted Average Useful Life	4 years 10 months 24 days
Volterra [Member] | Customer relationships [Member]
Business Acquisition [Line Items]
Amortizable intangible assets acquired	$ 24,600
Acquired Finite-lived Intangible Asset, Weighted Average Useful Life	9 years 7 months 6 days
Volterra [Member] | Trade Names [Member]
Business Acquisition [Line Items]
Amortizable intangible assets acquired	$ 6,400
Acquired Finite-lived Intangible Asset, Weighted Average Useful Life	4 years
Volterra [Member] | Backlog [Member]
Business Acquisition [Line Items]
Amortizable intangible assets acquired	$ 900
Acquired Finite-lived Intangible Asset, Weighted Average Useful Life	4 months 24 days
Volterra [Member] | Patents [Member]
Business Acquisition [Line Items]
Amortizable intangible assets acquired	$ 2,500
Acquired Finite-lived Intangible Asset, Weighted Average Useful Life	4 years 9 months 18 days
Other Acquisition [Member]
Business Acquisition [Line Items]
Business Combination, Consideration Transferred	$ 6,100
Goodwill acquired			$ 500