BUSINESS COMBINATIONS - Estimated fair values of the assets acquired and liabilities assumed (Details) - USD ($) $ in Millions	Jun. 30, 2015	Apr. 01, 2015	Dec. 31, 2014	Jul. 07, 2014	Jan. 23, 2014
Assets acquired and liabilities assumed
Goodwill	$ 17,233.1		$ 9,346.4
Salix
Assets acquired and liabilities assumed
Cash and cash equivalents		$ 113.7
Inventories		233.2
Other current assets		1,400.3
Property, plant and equipment, net		24.3
Identifiable intangible assets, excluding acquired IPR&D		6,756.3
Acquired IPR&D		5,366.8
Current liabilities		(1,764.2)
Contingent consideration, short term portion		(327.9)
Long-term debt, including current portion		(3,123.1)
Deferred income taxes, net		(3,512.0)
Other non-current liabilities		(7.3)
Total identifiable net assets		5,160.1
Goodwill		7,971.9
Total fair value of consideration transferred		$ 13,132.0
Other 2015 Acquisitions
Assets acquired and liabilities assumed
Cash and cash equivalents	81.1
Accounts receivable	25.4
Inventories	107.0
Other current assets	18.1
Property, plant and equipment, net	57.8
Identifiable intangible assets, excluding acquired IPR&D	882.1
Acquired IPR&D	24.0
Other non-current assets	1.2
Deferred tax asset, net	9.0
Current liabilities	(92.8)
Non-current liabilities	(96.0)
Total identifiable net assets	1,016.9
Goodwill	55.0
Total fair value of consideration transferred	1,071.9
Other 2015 Acquisitions | Amounts Recognized as of Acquisition Date (as previously reported)
Assets acquired and liabilities assumed
Cash and cash equivalents			81.1
Accounts receivable			25.4
Inventories			107.3
Other current assets			18.1
Property, plant and equipment, net			72.1
Identifiable intangible assets, excluding acquired IPR&D			874.7
Acquired IPR&D			25.5
Other non-current assets			1.2
Deferred tax asset, net			5.8
Current liabilities			(92.8)
Non-current liabilities			(96.0)
Total identifiable net assets			1,022.4
Goodwill			55.9
Total fair value of consideration transferred			1,078.3
Other 2015 Acquisitions | Measurement Period Adjustments
Assets acquired and liabilities assumed
Cash and cash equivalents			0.0
Accounts receivable			0.0
Inventories			(0.3)
Other current assets			0.0
Property, plant and equipment, net			(14.3)
Identifiable intangible assets, excluding acquired IPR&D			7.4
Acquired IPR&D			(1.5)
Other non-current assets			0.0
Deferred tax asset, net			3.2
Current liabilities			0.0
Non-current liabilities			0.0
Total identifiable net assets			(5.5)
Goodwill			(0.9)
Total fair value of consideration transferred			(6.4)
2014 Acquisitions
Assets acquired and liabilities assumed
Cash and cash equivalents	34.7
Accounts receivable	81.8
Assets held for sale	124.9
Inventories	154.6
Other current assets	14.3
Property, plant and equipment, net	61.2
Identifiable intangible assets, excluding acquired IPR&D	711.8
Acquired IPR&D	63.0
Other non-current assets	1.9
Current liabilities	(173.8)
Long-term debt, including current portion	(11.2)
Deferred income taxes, net	(75.5)
Other non-current liabilities	(13.5)
Total identifiable net assets	974.2
Noncontrolling interest	(14.7)
Goodwill	456.5
Total fair value of consideration transferred less noncontrolling interest			1,420.0
Gross contractual amount of trade accounts receivable acquired	88.0
Expected uncollectible of trade accounts receivable acquired	6.0
2014 Acquisitions | Amounts Recognized as of Acquisition Date (as previously reported)
Assets acquired and liabilities assumed
Cash and cash equivalents			33.6
Accounts receivable			87.7
Assets held for sale			125.7
Inventories			170.4
Other current assets			19.1
Property, plant and equipment, net			58.5
Identifiable intangible assets, excluding acquired IPR&D			697.2
Acquired IPR&D			65.8
Other non-current assets			4.0
Current liabilities			(152.0)
Long-term debt, including current portion			(11.2)
Deferred income taxes, net			(116.0)
Other non-current liabilities			(13.4)
Total identifiable net assets			969.4
Noncontrolling interest			(15.0)
Goodwill			410.4
Total fair value of consideration transferred less noncontrolling interest			1,364.8
2014 Acquisitions | Measurement Period Adjustments
Assets acquired and liabilities assumed
Cash and cash equivalents			1.1
Accounts receivable			(5.9)
Assets held for sale			(0.8)
Inventories			(15.8)
Other current assets			(4.8)
Property, plant and equipment, net			2.7
Identifiable intangible assets, excluding acquired IPR&D			14.6
Acquired IPR&D			(2.8)
Other non-current assets			(2.1)
Current liabilities			(21.8)
Long-term debt, including current portion			0.0
Deferred income taxes, net			40.5
Other non-current liabilities			(0.1)
Total identifiable net assets			4.8
Noncontrolling interest			0.3
Goodwill			46.1
Total fair value of consideration transferred less noncontrolling interest			51.2
PreCision Dermatology, Inc.
Assets acquired and liabilities assumed
Total fair value of consideration transferred				$ 459.0
Solta Medical, Inc.
Assets acquired and liabilities assumed
Total fair value of consideration transferred					$ 293.0
Developed Markets
Assets acquired and liabilities assumed
Goodwill	15,062.9		7,115.0
Developed Markets | PreCision Dermatology, Inc.
Assets acquired and liabilities assumed
Goodwill				194.0
Developed Markets | Solta Medical, Inc.
Assets acquired and liabilities assumed
Goodwill				56.0
Emerging Markets
Assets acquired and liabilities assumed
Goodwill	$ 2,170.2		$ 2,231.4
Emerging Markets | Solta Medical, Inc.
Assets acquired and liabilities assumed
Goodwill				$ 38.0