KLA Corporation Annual report pursuant to Section 13 and 15(d)

描述重要的业务和总结Accounting Policies - Property and Equipment (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Property, Plant and Equipment
Depreciation expense	$ 49.1	$ 52.6	$ 55.8
Buildings \| Minimum
Property, Plant and Equipment
Property and equipment, useful life (in years)	30 years
Buildings \| Maximum
Property, Plant and Equipment
Property and equipment, useful life (in years)	35 years
Leasehold improvements \| Maximum
Property, Plant and Equipment
Property and equipment, useful life (in years)	15 years
Machinery and equipment \| Minimum
Property, Plant and Equipment
Property and equipment, useful life (in years)	2 years
Machinery and equipment \| Maximum
Property, Plant and Equipment
Property and equipment, useful life (in years)	5 years
Office furniture and fixtures
Property, Plant and Equipment
Property and equipment, useful life (in years)	7 years