RECENT ACCOUNTING STANDARDS - Revenue Recognition (Details)	3 Months Ended
Sep. 29, 2018 USD ($)
Accounting Policies [Abstract]
Revenue from contract with customer, cumulative Catch-up adjustment	$ 0

Revenue from Contract with Customer, Cumulative Catch-up Adjustment

No definition available.

Name:	oclr_RevenuefromContractwithCustomerCumulativeCatchupAdjustment
Namespace Prefix:	oclr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration