INCOME TAXES - Narrative (Details) - USD ($) $ in Millions			12 Months Ended
	Jan. 13, 2021	Aug. 15, 2017	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Operating Loss Carryforwards [Line Items]
Tax credit carryforwards, subject to expiration			$ 28.2
Operating loss carryforwards, subject to expiration			650.5
Tax credit carryforwards, not subject to expiration			6.7
Operating loss carryforwards, not subject to expiration			1,400.0
Interest carryforwards			362.6
Increase (decrease) in valuation allowance			47.7	$ 46.4	$ (56.2)
Deferred tax liability with respect to undistributed earnings of certain foreign subsidiaries			3.6	3.1
Unremitted earnings of foreign subsidiaries			3.3
Unrecognized deferred tax liability related to unremitted earnings of foreign subsidiaries			0.4
Unrecognized tax benefits liability, interest and penalties accrued			70.2	74.9	85.8
Unrecognized tax benefits that would impact effective tax rate			183.3	$ 185.2	$ 217.0
Income tax examination, penalties and interest expense		$ 134.1				$ 24.7	$ 40.1	$ 41.8	$ 27.5
Cumulative deferred charge related to tax litigation			$ 113.3
Royalty conceded on all omeprazole sales as a percent of refund claims (as a percent)			5.24%
IRS notice of proposed audit adjustment from 2013, 2014 and 2015	$ 141.6
IRS notice of proposed audit adjustment for ANDA from 2013, 2014, and 2015	21.9
Income tax examination, debts subject to limit of deductibility of interest expense	7,500.0
Minimum
Operating Loss Carryforwards [Line Items]
Income tax examination, estimate of additional tax	25.0
Maximum
Operating Loss Carryforwards [Line Items]
Income tax examination, estimate of additional tax	$ 128.0