Debt Instrument, Covenant, Total Net Leverage Ratio

No definition available.

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- Definition

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

+ References

No definition available.

+ Details

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- 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

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 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
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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
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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
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Data Type:	num:percentItemType
Balance Type:	na
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

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(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

DEBT - Narrative (Details)			6 Months Ended	12 Months Ended
DEBT - Narrative (Details)	Sep. 30, 2018	Apr. 05, 2018 USD ($)	Dec. 31, 2018	Jun. 30, 2018	Apr. 05, 2018 EUR (€)
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 (percent)				2.25%
Coty Term Loan B Facility due October 2022 \| Alternative Base Rate
Debt Instrument [Line Items]
Basis spread on variable rate (percent)				1.25%
Coty Term Loan B Facility due October 2022 \| Euro Interbank Offered Rate (Euribor)
Debt Instrument [Line Items]
Basis spread on variable rate (percent)				2.50%
Senior 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 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 \| Maximum
Debt Instrument [Line Items]
Applicable leverage ratio following the closing of any material acquisition			5.95
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 (percent)	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 (percent)	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
Total net leverage ratio		3.00
Senior Unsecured Notes
Debt Instrument [Line Items]
Debt instrument, redemption price, percentage		101.00%