XML 69 R58.htm IDEA: XBRL DOCUMENT
v3.7.0.1

Segment, Customers, and Geographic Information - Net Revenue from External Customers (Detail) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Mar. 31, 2017 | Mar. 31, 2016 | Mar. 31, 2017 | Mar. 31, 2016
Revenue from External Customer [Line Items] |  |  |  |
Net revenue | $ 444.2 | $ 402.5 | $ 1,291.7 | $ 1,343.0
Mobile Product Applications [Member] |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Net revenue | 391.0 | 354.2 | 1,119.8 | 1,174.1
PC Product Applications [Member] |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Net revenue | $ 53.2 | $ 48.3 | $ 171.9 | $ 168.9

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
Name: | us-gaap_SalesRevenueNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_ProductOrServiceAxis=syna_MobileProductApplicationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ProductOrServiceAxis=syna_PcProductApplicationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |