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Indemnifications, Contingencies and Legal Proceedings - Additional Information (Detail) - Mar. 31, 2017 ¥ in Millions, $ in Millions | USD ($) | JPY (¥)
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Commitments Contingencies And Litigation [Line Items] |  |
Contingent consideration liabilities recorded for business combinations | $ 8.7 |
IIX Inc [Member] |  |
Commitments Contingencies And Litigation [Line Items] |  |
Indemnification Holdback Liability Non-current | $ 5.8 | ¥ 648

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