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v3.20.1

Leases and Other Commitments - Additional Information (Details) | 12 Months Ended
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Mar. 31, 2020
Commitments and Contingencies Disclosure [Abstract] |
Maximum indemnity period of claims related to intellectual property | 5 years

X
- Definition Represents the period of indemnity to licensees, distributors and promotional partners in connection with the claims related to use of the company's intellectual property (in years). + References No definition available. + Details
Name: | deck_MaximumIndemnityPeriodofClaimsRelatedtoIntellectualProperty
Namespace Prefix: | deck_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_CommitmentsAndContingenciesDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration