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DEBT - Narrative (Details) |  |  |  |  | 1 Months Ended | 9 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Nov. 30, 2020 USD ($) | Jun. 27, 2019 USD ($) | Jun. 26, 2019 | Apr. 05, 2018 USD ($) | Dec. 31, 2020 USD ($) | Mar. 31, 2021 USD ($) quarter | Mar. 31, 2020 USD ($) | Jun. 30, 2020 USD ($) | Apr. 29, 2020 USD ($) | Apr. 05, 2018 EUR (€)
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Short-term debt |  |  |  |  |  | $ 500,000 |  | $ 0 |  |
Return of capital from equity investments |  |  |  |  |  | 448,000,000.0 | $ 0 |  |  |
Repayments of long-term lines of credit |  |  |  |  |  | 2,963,700,000 | $ 2,589,000,000.0 |  |  |
Wella Business |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Equity securities, FV-NI, ownership percentage | 40.00% |  |  |  |  |  |  |  |  |
Wella Business | KKR |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Ownership percentage | 60.00% |  |  |  |  |  |  |  |  |
Discontinued Operations, Held-for-sale or Disposed of by Sale | Wella Business |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Cash proceeds from divestiture | $ 2,451,700,000 |  |  |  |  |  |  |  |  |
Return of capital from equity investments | 448,000,000.0 |  |  |  |  |  |  |  |  |
Letter of Credit |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Undrawn letters of credit and bank guarantees |  |  |  |  |  | 15,000,000.0 |  | 6,000,000.0 |  |
Bank Guarantee |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Undrawn letters of credit and bank guarantees |  |  |  |  |  | $ 25,800,000 |  | $ 45,700,000 |  |
Incurrence Incremental Facilities |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Net leverage ratio |  | 5.0 | 5.25 |  |  |  |  |  |  |
2018 Coty Credit Agreement |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Proceeds from divestiture, amount allocated to reinvestment in the business | 500,000,000.0 |  |  |  |  |  |  |  |  |
Coty Term Loan B Facility due October 2022 |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
LIBOR floor |  |  |  |  |  | 0.00% |  |  |  |
Coty Term Loan B Facility due October 2022 | LIBOR |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate, percentage |  |  |  |  |  | 2.25% |  |  |  |
Coty Term Loan B Facility due October 2022 | Alternative Base Rate |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate, percentage |  |  |  |  |  | 1.25% |  |  |  |
Coty Term Loan B Facility due October 2022 | Euro Interbank Offered Rate (Euribor) |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate, percentage |  |  |  |  |  | 2.50% |  |  |  |
2018 Coty Term A and Term B Facilities |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Repayments of long-term lines of credit | 2,015,500,000 |  |  |  | $ 2,015,500,000 |  |  |  |  |
2018 Coty Term A Facility |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Aggregate principal amount | € |  |  |  |  |  |  |  |  |  | € 2,035,000,000.0
Repayments of long-term lines of credit |  |  |  |  | 1,135,700,000 |  |  |  |  |
2018 Coty Term B Facility |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Aggregate principal amount | € |  |  |  |  |  |  |  |  |  | € 850,000,000.0
Repayments of long-term lines of credit |  |  |  |  | 879,800,000 |  |  |  |  |
Senior Unsecured Notes |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Redemption price, percentage |  |  |  | 101.00% |  |  |  |  |  |
Senior Unsecured Notes | 2026 Dollar Notes |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Amount of term loan facility |  |  |  | $ 550,000,000.0 |  |  |  |  |  |
Interest rate, stated percentage |  |  |  | 6.50% |  |  |  |  |  | 6.50%
Senior Unsecured Notes | 2026 Euro Notes |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Amount of term loan facility | € |  |  |  |  |  |  |  |  |  | € 250,000,000.0
Interest rate, stated percentage |  |  |  | 4.75% |  |  |  |  |  | 4.75%
Line of Credit |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Aggregate principal amount |  | $ 2,750,000,000.0 |  |  |  |  |  |  |  |
Decrease in total commitments |  | $ 500,000,000.0 |  |  |  |  |  |  |  |
Quarterly minimum liquidity covenant |  |  |  |  | 500,000,000.0 |  |  |  | $ 350,000,000.0 |
Total Net Leverage Ratio, material acquisition, number of fiscal quarters | quarter |  |  |  |  |  | 4 |  |  |  |
Total net leverage ratio, after material acquisition | quarter |  |  |  |  |  | 2 |  |  |  |
Line of Credit | Maximum |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Applicable leverage ratio following the closing of any material acquisition |  |  |  |  |  | 5.95 |  |  |  |
Line of Credit | Minimum |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Applicable leverage ratio following the closing of any material acquisition |  |  |  |  |  | 1.00 |  |  |  |
Line of Credit | 2023 Euro Notes |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Amount of term loan facility | € |  |  |  |  |  |  |  |  |  | € 550,000,000.0
Interest rate, stated percentage |  |  |  | 4.00% |  |  |  |  |  | 4.00%
Line of Credit | 2018 Coty Credit Agreement |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Proceeds from divestiture, amount allocated to reinvestment in the business | $ 500,000,000.0 |  |  |  |  |  |  |  |  |
Line of Credit | 2018 Coty Revolving Credit Facility | Letter of Credit |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Aggregate principal amount |  |  |  | $ 150,000,000.0 |  |  |  |  |  |
Line of Credit | 2018 Coty Revolving Credit Facility | Revolving Credit Facility |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Aggregate principal amount |  |  |  | 3,250,000,000.0 |  |  |  |  |  |
Line of Credit | 2018 Coty Revolving Credit Facility | Swingline loans |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Aggregate principal amount |  |  |  | 150,000,000.0 |  |  |  |  |  |
Line of Credit | 2018 Coty Revolving Credit Facility | Incurrence Incremental Facilities |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Aggregate principal amount |  |  |  | $ 1,700,000,000.0 |  |  |  |  |  |
Net leverage ratio |  |  |  | 3.00 |  |  |  |  |  |
Line of Credit | 2018 Coty Term A and Term B Facilities |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Write off of deferred debt issuance cost |  |  |  |  | 10,700,000 |  |  |  |  |
Write off of unamortized debt discount |  |  |  |  | $ 3,100,000 |  |  |  |  |
Line of Credit | 2018 Coty Term A Facility |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Aggregate principal amount |  |  |  | $ 1,000,000,000.0 |  |  |  |  |  |
Quarterly repayment percentage |  |  |  |  |  | 1.25% |  |  |  |
Line of Credit | 2018 Coty Term B Facility |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Aggregate principal amount |  |  |  | $ 1,400,000,000.0 |  |  |  |  |  |
Discount percentage |  |  |  | 0.25% |  |  |  |  |  | 0.25%
Quarterly repayment percentage |  |  |  |  |  | 0.25% |  |  |  |

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