Minimum Volume Commitment, Commodity Contract

No definition available.

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

- Definition

Purchase Commitment, Deposit Outstanding

+ References

No definition available.

+ Details

Name:	deck_PurchaseCommitmentDepositOutstanding
Namespace Prefix:	deck_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Refund Received For Outstanding Deposits

+ References

No definition available.

+ Details

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

- Definition

Unrecorded Unconditional Purchase Obligation, to be Paid, Year Four and Five

+ References

No definition available.

+ Details

Name:	deck_UnrecordedUnconditionalPurchaseObligationToBePaidYearFourAndFive
Namespace Prefix:	deck_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Unrecorded Unconditional Purchase Obligation, to be Paid, Year Two and Three

+ References

No definition available.

+ Details

Name:	deck_UnrecordedUnconditionalPurchaseObligationToBePaidYearTwoAndThree
Namespace Prefix:	deck_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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_LongTermPurchaseCommitmentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). Includes, but is not limited to, lease not yet commenced.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 440
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482648/440-10-50-4

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478964/842-20-50-3

+ Details

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

- Definition

Amount of unrecorded obligation to transfer funds in future for fixed or minimum amount or quantity of product and service at fixed or minimum price. Includes, but is not limited to, lease not yet commenced and take-or-pay and throughput contracts.

+ References

+ Details

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

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PurchaseCommitmentExcludingLongtermCommitmentAxis=us-gaap_ProductMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PurchaseCommitmentExcludingLongtermCommitmentAxis=deck_PurchaseCommitmentCommodityContractsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PurchaseCommitmentExcludingLongtermCommitmentAxis=deck_OtherPurchaseCommitmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PurchaseCommitmentExcludingLongtermCommitmentAxis=deck_PurchaseCommitmentSupplyAgreementsMember
Namespace Prefix:
Data Type:	na
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Period Type:

Commitments and Contingencies (Details) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
	May 01, 2026	Mar. 31, 2026	Mar. 31, 2025
Long-Term Purchase Commitment [Line Items]
Less than 1 Year		$ 1,183,804
1-3 Years		186,114
3-5 Years		4,347
Total		1,374,265
Subsequent Event
Long-Term Purchase Commitment [Line Items]
Aggregate minimum volume commitment	$ 111,800
Product
Long-Term Purchase Commitment [Line Items]
Less than 1 Year		980,776
1-3 Years		0
3-5 Years		0
Total		980,776
Commodity Contracts
Long-Term Purchase Commitment [Line Items]
Less than 1 Year		84,702
1-3 Years		26,278
3-5 Years		0
Total		110,980
Other Purchase Commitment
Long-Term Purchase Commitment [Line Items]
Less than 1 Year		118,326
1-3 Years		159,836
3-5 Years		4,347
Total		282,509
Supply Agreements
Long-Term Purchase Commitment [Line Items]
Purchase commitment, deposit outstanding		0	$ 0
Refund received for outstanding deposits		$ 0	$ 16,243