FAIR VALUE MEASUREMENTS (Details 3) - Non-recurring basis - Ezogabine Retigabine $ in Millions	3 Months Ended
Sep. 30, 2013 USD ($)
Amortization and Impairments of Finite-lived Intangible Assets
Assets and Liabilities Measured at Fair Value on a Non-Recurring Basis
Impairment charges on intangible assets	$ 552
In-process Research and Development Impairments and Other Charges
Assets and Liabilities Measured at Fair Value on a Non-Recurring Basis
Impairment charges on intangible assets	94
Significant Unobservable Inputs (Level 3)
Assets and Liabilities Measured at Fair Value on a Non-Recurring Basis
Fair value of assets measured on nonrecurring basis	$ 45

The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of an intangible asset (excluding goodwill) to fair value.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16373-109275

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration