DEBT - Leverage Ratios (Details)				3 Months Ended
	Jun. 27, 2019 USD ($)	Jun. 26, 2019	Apr. 05, 2018 USD ($)	Sep. 30, 2019
Pricing Tier One | LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate, percentage				2.00%
Pricing Tier One | Alternative Base Rate
Debt Instrument [Line Items]
Basis spread on variable rate, percentage				1.00%
Pricing Tier Two | LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate, percentage				1.75%
Pricing Tier Two | Alternative Base Rate
Debt Instrument [Line Items]
Basis spread on variable rate, percentage				0.75%
Pricing Tier Three | LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate, percentage				1.50%
Pricing Tier Three | Alternative Base Rate
Debt Instrument [Line Items]
Basis spread on variable rate, percentage				0.50%
Pricing Tier Four | LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate, percentage				1.25%
Pricing Tier Four | Alternative Base Rate
Debt Instrument [Line Items]
Basis spread on variable rate, percentage				0.25%
Pricing Tier Five | LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate, percentage				1.125%
Pricing Tier Five | Alternative Base Rate
Debt Instrument [Line Items]
Basis spread on variable rate, percentage				0.125%
Pricing Tier Six | LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate, percentage				1.00%
Pricing Tier Six | Alternative Base Rate
Debt Instrument [Line Items]
Basis spread on variable rate, percentage				0.00%
Line of Credit
Debt Instrument [Line Items]
Aggregate principal amount	$ 2,750,000,000.0
Incurrence Incremental Facilities
Debt Instrument [Line Items]
Net leverage ratio	5.0	5.25
Incurrence Incremental Facilities | 2018 Coty Revolving Credit Facility | Line of Credit
Debt Instrument [Line Items]
Net leverage ratio			3.00
Aggregate principal amount			$ 1,700,000,000.0