Debt - Schedule of Total Debt (Parenthetical ) (Detail) - Innovative Systems GmbH [Member] - EUR (€) € in Millions	6 Months Ended
Dec. 31, 2016	Jun. 22, 2016
Debt Instrument [Line Items]
Frequency of payment terms	due every July 1st from 2017 through 2020
Litigation settlement amount, each installment payable		€ 13

Description of the frequency of the required periodic payments of interest, principal, or both, and the amount, if set, or a description of a formula upon which payment is based.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration