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LEGAL PROCEEDINGS - Completed or Dormant Matters (Details) - Settled Litigation $ in Millions		3 Months Ended
	Aug. 19, 2019 USD ($)	Mar. 31, 2020 USD ($)	Mar. 31, 2015 manufacturer
Contact Lens Antitrust Class Actions
Loss Contingencies [Line Items]
Number of manufacturers | manufacturer			3
Settlement, agreed to pay	$ 10
Mississippi Attorney General Consumer Protection Action
Loss Contingencies [Line Items]
Settlement, agreed to pay		$ 0
Investigation by the State of Texas, State's Medicaid Program
Loss Contingencies [Line Items]
Settlement, agreed to pay		$ 10

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