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Stock-Based Compensation - Valuation Assumptions (Details)	12 Months Ended
	Jul. 01, 2017	Jul. 02, 2016	Jun. 27, 2015
MSUs | Monte Carlo simulation
Valuation Assumptions
Expected volatility	33.20%	33.80%	40.80%
Average volatility of peer companies	36.90%	52.90%	53.40%
Average correlation coefficient of peer companies	0.1856	0.1103	0.2156
Risk-free interest rate	0.70%	0.80%	0.60%
Options | BSM
Valuation Assumptions
Expected term (in years)		5 years 2 months 12 days
Expected volatility		42.30%
Risk-free interest rate		1.20%
Employee Stock Purchase Plan | BSM
Valuation Assumptions
Expected term (in years)	6 months	6 months	6 months
Expected volatility	33.40%	45.70%	37.90%
Risk-free interest rate	0.50%	0.40%	0.10%

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The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
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The risk-free interest rate assumption that is used in valuing an option on its own shares.

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-Name Accounting Standards Codification
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Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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The assumption of average volatility of peer companies that is used in valuing an option or stock unit on its own shares.

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The assumption of average correlation coefficient of peer companies that is used in valuing an option or stock unit on its own shares.

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