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Stock-Based Compensation - Valuation Assumptions (Details)	12 Months Ended
	Jun. 30, 2018	Jul. 01, 2017	Jul. 02, 2016
MSUs | Monte Carlo simulation
Valuation Assumptions
Expected volatility	30.10%	33.20%	33.80%
Average volatility of peer companies	32.60%	36.90%	52.90%
Average correlation coefficient of peer companies	0.1618	0.1856	0.1103
Risk-free interest rate	1.40%	0.70%	0.80%
Options | BSM
Valuation Assumptions
Expected volatility	42.30%
Risk-free interest rate	1.20%
Expected term (in years)	5 years 2 months 2 days
Employee Stock Purchase Plan | BSM
Valuation Assumptions
Expected volatility	28.00%	33.40%	45.70%
Risk-free interest rate	1.40%	0.50%	0.40%
Expected term (in years)	6 months	6 months	6 months

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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.

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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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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.

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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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