COMMITMENTS AND CONTINGENCIES - Legal Matters (Details) $ in Millions	Jan. 30, 2019 USD ($)	Aug. 28, 2018 USD ($)	Aug. 23, 2017 action	Apr. 11, 2017 defendant patent	Mar. 09, 2016 patent	Dec. 31, 2018 lawsuit case
130 Patent
Legal matters
Number of patents infringed | patent					3
Number of defendants | defendant				4
Gralise ANDA Filers
Legal matters
Number of patents infringed | patent				3
Number of defendants | defendant				3
Company Vs. Purdue Companies | Settled Litigation
Legal matters
Litigation settlement received | $		$ 30
Company Vs. Purdue Companies | Settled Litigation | Subsequent Event
Legal matters
Litigation settlement received | $	$ 32
Securities Class Action Lawsuit
Legal matters
Number of shareholder derivative actions filed | action			5
Multidistrict Opioid Litigation
Legal matters
Number of lawsuits						19
Multidistrict Opioid Litigation | Minimum
Legal matters
Number of industry-wide opioid litigation cases (more than) | case						1,000
Federal Lawsuits
Legal matters
Number of lawsuits						1
State Opioid Litigation
Legal matters
Number of lawsuits						20
Opiod Litigation - Texas
Legal matters
Number of lawsuits						3
Opioid Litigation - Pennsylvania
Legal matters
Number of lawsuits						3
Opioid Litigation Utah
Legal matters
Number of lawsuits						6
Opioid Litigation - Missouri
Legal matters
Number of lawsuits						4
Opioid Litigation - Nevada
Legal matters
Number of lawsuits						2
Opioid Litigation Arizona
Legal matters
Number of lawsuits						1
Opioid Litigation Arkansas
Legal matters
Number of lawsuits						1