COMMITMENTS AND CONTINGENCIES (Details)	Sep. 28, 2018 item
VIX Litigation \| Pending Litigation
Loss Contingencies
Number of Commodity Exchange Act claims	3

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.

No definition available.

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