CHARGES ASSOCIATED WITH RESTRUCTURING AND OTHER ACTIVITIES - Leading Beauty Forward, Accrued Restructuring Charges (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Restructuring Costs
Charges	$ 41	$ 19	$ 72	$ 19
Leading Beauty Forward
Restructuring Costs
Beginning balance			73				$ 73
Charges			29					$ 75
Cash payments			(17)
Noncash asset write-offs			(2)					(1)
Translation adjustments			(2)					(1)
Ending balance	81		81					73
Employee-Related Costs | Leading Beauty Forward
Restructuring Costs
Beginning balance			73				73
Charges			25					74
Cash payments			(16)
Translation adjustments			(2)					(1)
Ending balance	80		80					73
Asset-Related Costs | Leading Beauty Forward
Restructuring Costs
Charges			2					1
Noncash asset write-offs			(2)					$ (1)
Contract Terminations | Leading Beauty Forward
Restructuring Costs
Charges			1
Cash payments			(1)
Other Exit Costs | Leading Beauty Forward
Restructuring Costs
Charges			1
Ending balance	$ 1		$ 1
Forecast | Leading Beauty Forward
Restructuring Costs
Accrued restructuring charges expected to result in cash expenditures funded from cash provided by operations					$ 19	$ 41	$ 21