Debt Instrument, Covenant, Total Net Leverage Ratio

No definition available.

Name:	coty_DebtInstrumentCovenantTotalNetLeverageRatio
Namespace Prefix:	coty_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt Instrument, Covenant, Total Net Leverage Ratio, Material Acquisition

+ References

No definition available.

+ Details

Name:	coty_DebtInstrumentCovenantTotalNetLeverageRatioMaterialAcquisition
Namespace Prefix:	coty_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt Instrument, Covenant, Total Net Leverage Ratio, Material Acquisition, Number Of Fiscal Quarters

+ References

No definition available.

+ Details

Name:	coty_DebtInstrumentCovenantTotalNetLeverageRatioMaterialAcquisitionNumberOfFiscalQuarters
Namespace Prefix:	coty_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Debt Instrument, Covenant, Total Net Leverage Ratio, Material Acquisition, Number Of Fiscal Quarters, No Greater Than The Maximum Total Net Leverage Ratio

+ References

No definition available.

+ Details

Name:	coty_DebtInstrumentCovenantTotalNetLeverageRatioMaterialAcquisitionNumberOfFiscalQuartersNoGreaterThanTheMaximumTotalNetLeverageRatio
Namespace Prefix:	coty_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Debt Instrument, Discount Percentage

+ References

No definition available.

+ Details

Name:	coty_DebtInstrumentDiscountPercentage
Namespace Prefix:	coty_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The percentage used to calculate the quarterly repayments based on the original principal amount.

+ References

No definition available.

+ Details

Name:	coty_DebtInstrumentQuarterlyRepaymentPercentage
Namespace Prefix:	coty_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

+ Details

Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph e
-URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823

+ Details

Name:	us-gaap_DebtInstrumentRedemptionPricePercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of increase (decrease) of the credit facility.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(f))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

+ Details

Name:	us-gaap_LineOfCreditFacilityIncreaseDecreaseForPeriodNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(19)(a))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16)(a)(1))
-URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(13))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

Name:	us-gaap_ShortTermBorrowings
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	us-gaap_CreditFacilityAxis=coty_BankGuaranteeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=coty_IncurrenceIncrementalFacilitiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=coty_A2018CotyTermAFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=coty_A2018CotyTermBFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=coty_TermLoanBFacilityDueOctober2022Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_LondonInterbankOfferedRateLIBORMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_BaseRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=coty_EuroInterbankOfferedRateEuriborMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_SeniorNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=coty_A2026DollarNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=coty_A2026EuroNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_LineOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=coty_A2023EuroNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_MediumTermNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=coty_A2018CotyRevolvingCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_LetterOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_BridgeLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=coty_SeniorUnsecuredNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

DEBT - Narrative (Details)					3 Months Ended	12 Months Ended
DEBT - Narrative (Details)	Jun. 27, 2019 USD ($)	Jun. 26, 2019	Sep. 30, 2018	Apr. 05, 2018 EUR (€)	Sep. 30, 2019 USD ($) quarter	Jun. 30, 2018	Jun. 30, 2019 USD ($)	Apr. 05, 2018 USD ($)
Debt Instrument [Line Items]
Short-term debt					$ 700,000		$ 4,200,000
Undrawn letters of credit and bank guarantees					5,000,000.0		6,300,000
Bank Guarantee
Debt Instrument [Line Items]
Undrawn letters of credit and bank guarantees					$ 51,800,000		$ 97,100,000
Incurrence Incremental Facilities
Debt Instrument [Line Items]
Net leverage ratio	5.0	5.25
2018 Coty Term A Facility
Debt Instrument [Line Items]
Aggregate principal amount \| €				€ 2,035,000,000.0
2018 Coty Term B Facility
Debt Instrument [Line Items]
Aggregate principal amount \| €				€ 850,000,000.0
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%
Senior Unsecured Notes \| 2026 Dollar Notes
Debt Instrument [Line Items]
Amount of term loan facility								$ 550,000,000.0
Debt instrument, 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
Debt instrument, 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
Total Net Leverage Ratio, material acquisition, number of fiscal quarters \| quarter					4
Total Net Leverage Ratio, material acquisition, number of fiscal quarters, no greater than the maximum Total Net Leverage Ratio \| 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 \| Term Loan
Debt Instrument [Line Items]
Amount of term loan facility \| €				€ 550,000,000.0
Debt instrument, interest rate, stated percentage				4.00%				4.00%
Line of Credit \| 2018 Coty Term A Facility
Debt Instrument [Line Items]
Aggregate principal amount								$ 1,000,000,000.0
Line of Credit \| 2018 Coty Term A Facility \| Term Loan
Debt Instrument [Line Items]
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%
Line of Credit \| 2018 Coty Term B Facility \| Term Loan
Debt Instrument [Line Items]
Quarterly repayment percentage			0.25%
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 \| Letter of Credit
Debt Instrument [Line Items]
Aggregate principal amount								150,000,000.0
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
Senior Unsecured Notes
Debt Instrument [Line Items]
Debt instrument, redemption price, percentage				101.00%