INTANGIBLE ASSETS AND GOODWILL (Details) (USD $) In Millions, unless otherwise specified			3 Months Ended		3 Months Ended
	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2014 Acquired IPR&D(1)	Dec. 31, 2013 Acquired IPR&D(1)	Sep. 30, 2013 Acquired IPR&D(1) Ezogabine Retigabine	Sep. 30, 2014 Corporate brand	Dec. 31, 2013 Corporate brand	Sep. 30, 2014 Product brands	Dec. 31, 2013 Product brands	Sep. 30, 2014 Corporate brand	Dec. 31, 2013 Corporate brand	Sep. 30, 2014 Product rights	Dec. 31, 2013 Product rights	Sep. 30, 2014 Partner relationships	Dec. 31, 2013 Partner relationships	Sep. 30, 2014 Out-licensed technology and other	Dec. 31, 2013 Out-licensed technology and other
Finite-lived intangible assets:
Gross Carrying Amount	$ 14,396.8	$ 14,398.8						$ 10,378.0	$ 10,554.2	$ 379.0	$ 365.6	$ 3,193.1	$ 3,021.0	$ 195.9	$ 194.0	$ 250.8	$ 264.0
Accumulated Amortization, Including Impairments	(4,768.8)	(3,827.4)						(3,384.1)	(2,729.1)	(67.3)	(44.4)	(1,101.3)	(876.9)	(104.2)	(83.2)	(111.9)	(93.8)
Net Carrying Amount	9,628.0	10,571.4						6,993.9	7,825.1	311.7	321.2	2,091.8	2,144.1	91.7	110.8	138.9	170.2
Indefinite-lived intangible assets:
Indefinite-lived intangible assets			294.9	579.3		1,697.5	1,697.5
Impairment charges on intangible assets			19.9		93.8
Total intangible assets
Gross Carrying Amount	16,389.2	16,675.6
Net Carrying Amount	$ 11,620.4	$ 12,848.2