RESTRUCTURING COSTS - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016	Oct. 01, 2016
Restructuring Cost and Reserve [Line Items]
Additional restructuring charges remaining				$ 110.0
Restructuring costs incurred				$ 3.9
Restructuring and related activities, period				2 years
Curtailment gain				$ 10.3	$ 2.2	$ 1.8
Global Integration Activities
Restructuring Cost and Reserve [Line Items]
Restructuring accrual				223.1	328.5
Cash expenditures				210.3
Restructuring charges				122.7
Restructuring costs incurred				470.7
Global Integration Activities | Scenario, Forecast
Restructuring Cost and Reserve [Line Items]
Cash expenditures	$ 4.4	$ 16.1	$ 202.6
Acquisition Integration Program
Restructuring Cost and Reserve [Line Items]
Restructuring accrual				7.7	30.4
Cash expenditures				19.1
Restructuring charges				3.3
Restructuring costs incurred				55.4
Curtailment gain				1.8
Acquisition Integration Program | Scenario, Forecast
Restructuring Cost and Reserve [Line Items]
Cash expenditures	2.9	2.3	2.5
Other Restructuring 2018
Restructuring Cost and Reserve [Line Items]
Restructuring costs incurred				$ 68.4
Restructuring and related activities, period				2 years
Restructuring and related cost, expected cost				$ 9.0
Other Restructuring 2018 | Scenario, Forecast
Restructuring Cost and Reserve [Line Items]
Cash expenditures	0.8	1.8	48.9
Other Restructuring, Integrate Chain and Selling Activities
Restructuring Cost and Reserve [Line Items]
Restructuring accrual				1.7	10.1
Restructuring charges				(2.0)	5.7	$ 44.6
Other Restructuring Programs, Assumed Proctor and Gable Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring accrual				7.0
Restructuring charges				0.9	0.0
Restructuring costs incurred							$ 21.7
Other Restructuring Programs, Assumed Proctor and Gable Restructuring | Scenario, Forecast
Restructuring Cost and Reserve [Line Items]
Cash expenditures	$ 0.7	$ 2.1	$ 4.2
Selling, general and administrative | Global Integration Activities
Restructuring Cost and Reserve [Line Items]
Restructuring charges				18.9
Other Restructuring | Global Integration Activities
Restructuring Cost and Reserve [Line Items]
Restructuring accrual				3.1	2.8
Cash expenditures				4.8
Restructuring charges				5.4
Other Restructuring | Acquisition Integration Program
Restructuring Cost and Reserve [Line Items]
Restructuring accrual				5.1	4.1
Cash expenditures				2.2
Restructuring charges				3.3
Other Restructuring | Other Restructuring 2018
Restructuring Cost and Reserve [Line Items]
Restructuring accrual				51.5	$ 0.0
Cash expenditures				15.5
Restructuring charges				$ 68.6