SUBSEQUENT EVENTS (Details) (Subsequent event, USD $) In Millions, unless otherwise specified	Jan. 31, 2015
Subsequent event
Subsequent Event [Line Items]
Purchase of cost method investment	$ 5

Original amount of cost-method investments at the acquisition date.

No definition available.

Name:	us-gaap_CostMethodInvestmentsOriginalCost
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant