The Company and Significant Accounting Policies - Risks and Uncertainties Narrative (Details)	12 Months Ended
Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Cost of Goods and Service, Product and Service Benchmark \| Supplier Concentration Risk
Concentration Risk [Line Items]
Percent of wafers manufactured	12.70%	14.10%	15.40%

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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