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Acquisitions - Additional Information (Detail) ¥ in Millions, $ in Millions			12 Months Ended
	Oct. 01, 2014 USD ($) ¥ / $	Oct. 01, 2014 JPY (¥) ¥ / $	Jun. 24, 2017	Jun. 30, 2016 USD ($)	Mar. 31, 2015 USD ($)	Mar. 31, 2015 JPY (¥)	Nov. 07, 2013
Business Acquisition [Line Items]
Additional purchase consideration settled					$ 48.6	¥ 5,780
Validity Sensors, Inc [Member]
Business Acquisition [Line Items]
Acquired outstanding common and preferred shares and voting interest							100.00%
Acquisition-related liabilities				$ 8.7
Renesas SP Drivers, Inc. [Member]
Business Acquisition [Line Items]
Acquired outstanding common and preferred shares and voting interest	100.00%	100.00%
Acquisition closing effective date			Oct. 01, 2014
Initial purchase price of acquisition	$ 463.0	¥ 50,600
Foreign currency exchange rate (Japanese yen to U.S. dollar) | ¥ / $	109.4	109.4
Indemnification hold back	$ 66.0	¥ 7,250
Working capital hold back	48.0	¥ 5,250
Additional purchase price consideration	4.8
Fair value of the consideration transferred totaled	$ 468.0

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