Label	Element	Value
Noncontrolling Interest, Change in Redemption Value	us-gaap_MinorityInterestChangeInRedemptionValue	$ 1,800,000
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders	us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	4,300,000
Temporary Equity, Distribution to Noncontrolling Interests, Net	coty_TemporaryEquityDistributiontoNoncontrollingInterestsNet	2,100,000
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest	us-gaap_NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest	(254,800,000)
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation	us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	900,000
Net Income (Loss) Attributable to Redeemable Noncontrolling Interest	us-gaap_NetIncomeLossAttributableToRedeemableNoncontrollingInterest	(300,000)
Adjustments To Additional Paid In Capital, Equity Investment Contribution, Share-based Payment Arrangement	coty_AdjustmentsToAdditionalPaidInCapitalEquityInvestmentContributionShareBasedPaymentArrangement	500,000
Temporary Equity, Accretion of Dividends	us-gaap_TemporaryEquityAccretionOfDividends	23,200,000
Temporary Equity, Repurchase Adjustment Of Redeemable Noncontrolling Interests	coty_TemporaryEquityRepurchaseAdjustmentOfRedeemableNoncontrollingInterests	$ 1,800,000
Accounting Standards Update [Extensible Enumeration]	us-gaap_AccountingStandardsUpdateExtensibleList	Accounting Standards Update 2016-13 [Member]
Retained Earnings [Member]
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest	us-gaap_NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest	$ (252,300,000)
Additional Paid-in Capital [Member]
Noncontrolling Interest, Change in Redemption Value	us-gaap_MinorityInterestChangeInRedemptionValue	1,800,000
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation	us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	900,000
Dividends, Preferred Stock	us-gaap_DividendsPreferredStock	23,200,000
Adjustments To Additional Paid In Capital, Equity Investment Contribution, Share-based Payment Arrangement	coty_AdjustmentsToAdditionalPaidInCapitalEquityInvestmentContributionShareBasedPaymentArrangement	500,000
Adjustments To Additional Paid In Capital, Change In Dividends Accrued	coty_AdjustmentsToAdditionalPaidInCapitalChangeInDividendsAccrued	400,000
Parent [Member]
Other Comprehensive Income (Loss), Net of Tax	us-gaap_OtherComprehensiveIncomeLossNetOfTax	135,600,000
Noncontrolling Interest, Change in Redemption Value	us-gaap_MinorityInterestChangeInRedemptionValue	1,800,000
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest	us-gaap_NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest	(252,300,000)
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation	us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	900,000
Dividends, Preferred Stock	us-gaap_DividendsPreferredStock	23,200,000
Adjustments To Additional Paid In Capital, Equity Investment Contribution, Share-based Payment Arrangement	coty_AdjustmentsToAdditionalPaidInCapitalEquityInvestmentContributionShareBasedPaymentArrangement	500,000
Adjustments To Additional Paid In Capital, Change In Dividends Accrued	coty_AdjustmentsToAdditionalPaidInCapitalChangeInDividendsAccrued	400,000
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	14,400,000
AOCI Attributable to Parent [Member]
Other Comprehensive Income (Loss), Net of Tax	us-gaap_OtherComprehensiveIncomeLossNetOfTax	135,600,000
Noncontrolling Interest [Member]
Other Comprehensive Income (Loss), Net of Tax	us-gaap_OtherComprehensiveIncomeLossNetOfTax	200,000
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders	us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	4,300,000
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest	us-gaap_NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest	$ (2,500,000)
Common Class A [Member] | Common Stock [Member]
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture	us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation	400,000