DEBT - Schedule of Long Term Debt Facilities (Details)		12 Months Ended
	Apr. 05, 2018 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2018 USD ($)	Jun. 30, 2019 EUR (€)	Apr. 05, 2018 EUR (€)
Line of Credit | Revolving credit facility | Coty Credit Agreement
Line of Credit Facility [Line Items]
Unused commitment fee percentage		0.35%	0.30%
Line of Credit | Revolving credit facility | Coty Credit Agreement | Minimum
Line of Credit Facility [Line Items]
Unused commitment fee percentage		0.10%
Line of Credit | Revolving credit facility | Coty Credit Agreement | Maximum
Line of Credit Facility [Line Items]
Unused commitment fee percentage		0.35%
Line of Credit | Revolving credit facility | 2018 Coty Revolving Credit Facility due April 2023
Line of Credit Facility [Line Items]
Applicable Interest Rate Spread		1.75%		1.75%
Borrowing Capacity | $		$ 2,750,000,000.0	$ 3,250,000,000.0
Line of Credit | Revolving credit facility | 2018 Coty Revolving Credit Facility due April 2023 | LIBOR | Minimum
Line of Credit Facility [Line Items]
Margin percentage		1.00%
Line of Credit | Revolving credit facility | 2018 Coty Revolving Credit Facility due April 2023 | LIBOR | Maximum
Line of Credit Facility [Line Items]
Margin percentage		2.00%
Line of Credit | Revolving credit facility | 2018 Coty Revolving Credit Facility due April 2023 | Base Rate | Minimum
Line of Credit Facility [Line Items]
Margin percentage		0.00%
Line of Credit | Revolving credit facility | 2018 Coty Revolving Credit Facility due April 2023 | Base Rate | Maximum
Line of Credit Facility [Line Items]
Margin percentage		1.00%
Line of Credit | Term Loan | Term Loan A Facility, Due April 2023 | U.S. Dollar
Line of Credit Facility [Line Items]
Borrowing Capacity | $		$ 1,000,000,000.0
Applicable Interest Rate Spread		1.75%		1.75%
Line of Credit | Term Loan | Term Loan A Facility, Due April 2023 | Euro
Line of Credit Facility [Line Items]
Borrowing Capacity				€ 2,035,000,000.0
Applicable Interest Rate Spread		1.75%		1.75%
Line of Credit | Term Loan | Term Loan A Facility, Due April 2023 | LIBOR | U.S. Dollar
Line of Credit Facility [Line Items]
Repayment percentage		1.25%
Line of Credit | Term Loan | Term Loan A Facility, Due April 2023 | LIBOR | U.S. Dollar | Minimum
Line of Credit Facility [Line Items]
Margin percentage		1.00%
Line of Credit | Term Loan | Term Loan A Facility, Due April 2023 | LIBOR | U.S. Dollar | Maximum
Line of Credit Facility [Line Items]
Margin percentage		2.00%
Line of Credit | Term Loan | Term Loan A Facility, Due April 2023 | LIBOR | Euro
Line of Credit Facility [Line Items]
Repayment percentage		1.25%
Line of Credit | Term Loan | Term Loan A Facility, Due April 2023 | LIBOR | Euro | Minimum
Line of Credit Facility [Line Items]
Margin percentage		1.00%
Line of Credit | Term Loan | Term Loan A Facility, Due April 2023 | LIBOR | Euro | Maximum
Line of Credit Facility [Line Items]
Margin percentage		2.00%
Line of Credit | Term Loan | Term Loan A Facility, Due April 2023 | Base Rate | U.S. Dollar | Minimum
Line of Credit Facility [Line Items]
Margin percentage		0.00%
Line of Credit | Term Loan | Term Loan A Facility, Due April 2023 | Base Rate | U.S. Dollar | Maximum
Line of Credit Facility [Line Items]
Margin percentage		1.00%
Line of Credit | Term Loan | Term Loan A Facility, Due April 2023 | Base Rate | Euro | Minimum
Line of Credit Facility [Line Items]
Margin percentage		0.00%
Line of Credit | Term Loan | Term Loan A Facility, Due April 2023 | Base Rate | Euro | Maximum
Line of Credit Facility [Line Items]
Margin percentage		1.00%
Line of Credit | Term Loan | Term Loan B Facility, Due April 2025 | U.S. Dollar
Line of Credit Facility [Line Items]
Borrowing Capacity | $		$ 1,400,000,000.0
Applicable Interest Rate Spread		2.25%		2.25%
Debt Discount		0.25%		0.25%
Line of Credit | Term Loan | Term Loan B Facility, Due April 2025 | Euro
Line of Credit Facility [Line Items]
Borrowing Capacity				€ 850,000,000.0
Applicable Interest Rate Spread		2.50%		2.50%
Debt Discount		0.25%		0.25%
Line of Credit | Term Loan | Term Loan B Facility, Due April 2025 | LIBOR | U.S. Dollar
Line of Credit Facility [Line Items]
Margin percentage		2.25%
Repayment percentage		0.25%
Line of Credit | Term Loan | Term Loan B Facility, Due April 2025 | LIBOR | Euro
Line of Credit Facility [Line Items]
Margin percentage		2.50%
Repayment percentage		0.25%
Line of Credit | Term Loan | Term Loan B Facility, Due April 2025 | Base Rate | U.S. Dollar
Line of Credit Facility [Line Items]
Margin percentage		1.25%
Senior Notes
Line of Credit Facility [Line Items]
Margin percentage	0.50%
Senior Notes | 2026 Dollar Notes
Line of Credit Facility [Line Items]
Borrowing Capacity | $	$ 550,000,000.0
Senior Notes | 2023 Euro Notes
Line of Credit Facility [Line Items]
Borrowing Capacity					€ 550,000,000.0
Senior Notes | 2026 Euro Notes
Line of Credit Facility [Line Items]
Borrowing Capacity					€ 250,000,000.0
Senior Notes | Term Loan | 2026 Dollar Notes | U.S. Dollar
Line of Credit Facility [Line Items]
Borrowing Capacity | $		$ 550,000,000.0
Margin percentage		6.50%
Senior Notes | Term Loan | 2023 Euro Notes | Euro
Line of Credit Facility [Line Items]
Borrowing Capacity				€ 550,000,000.0
Margin percentage		4.00%
Senior Notes | Term Loan | 2026 Euro Notes | Euro
Line of Credit Facility [Line Items]
Borrowing Capacity				€ 250,000,000.0
Margin percentage		4.75%