Revenue Recognition - Schedule of Contract Assets and Contract Liabilities (Details) - USD ($) $ in Thousands	6 Months Ended
Sep. 30, 2023	Sep. 30, 2022
Recovery Asset
Beginning balance	$ 15,685	$ 11,491
Net additions to sales return liability	24,298	26,444
Actual returns	(24,192)	(24,378)
Ending balance	15,791	13,557
Contract Liability
Beginning balance	(45,322)	(39,867)
Net additions to sales return liability	(106,824)	(84,336)
Actual returns	97,969	82,497
Ending balance	$ (54,177)	$ (41,706)

Contract With Customer, Asset, Decrease For Returns Received

No definition available.

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Balance Type:	credit
Period Type:	duration

- Definition

Contract With Customer, Asset, Increase (Decrease) For Change In Estimated Sales Returns, Net

+ References

No definition available.

+ Details

Name:	deck_ContractWithCustomerAssetIncreaseDecreaseForChangeInEstimatedSalesReturnsNet
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Contract With Customer, Contract Asset

+ References

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Contract With Customer, Contract Liability

+ References

No definition available.

+ Details

Name:	deck_ContractWithCustomerContractLiabilityRollForward
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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Contract With Customer, Refund Liability, Decrease For Returns Received

+ References

No definition available.

+ Details

Name:	deck_ContractWithCustomerRefundLiabilityDecreaseForReturnsReceived
Namespace Prefix:	deck_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Contract With Customer, Refund Liability, Increase (Decrease) For Change In Estimated Sales Returns, Net

+ References

No definition available.

+ Details

Name:	deck_ContractWithCustomerRefundLiabilityIncreaseDecreaseForChangeInEstimatedSalesReturnsNet
Namespace Prefix:	deck_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479837/606-10-45-3

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479837/606-10-45-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 8
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479806/606-10-50-8

+ Details

Name:	us-gaap_ContractWithCustomerAssetNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of liability for consideration received or receivable from customer which is not included in transaction price, when consideration is expected to be refunded to customer.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 27
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479777/606-10-55-27

+ Details

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Balance Type:	credit
Period Type:	instant