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COMMITMENTS AND CONTINGENCIES - Purchase Obligations Narrative (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Mar. 31, 2025 | Mar. 31, 2024
Product |  |
Purchase Commitment, Excluding Long-Term Commitment [Line Items] |  |
Outstanding purchase orders | $ 956,911 |
Commodity Contracts |  |
Purchase Commitment, Excluding Long-Term Commitment [Line Items] |  |
Purchase obligation | 231,323 |
Purchase obligation, to be paid, year one | 7,412 |
Purchase obligation, to be paid, year two and three | $ 223,911 |
Commodity Contracts | Minimum |  |
Purchase Commitment, Excluding Long-Term Commitment [Line Items] |  |
Purchase commitment period (in years) | 1 year |
Commodity Contracts | Maximum |  |
Purchase Commitment, Excluding Long-Term Commitment [Line Items] |  |
Purchase commitment period (in years) | 2 years |
Supply Agreements |  |
Purchase Commitment, Excluding Long-Term Commitment [Line Items] |  |
Purchase commitment, deposit outstanding | $ 0 | $ 16,243
Refunds of deposits | 16,243 |
Other Purchase Commitment |  |
Purchase Commitment, Excluding Long-Term Commitment [Line Items] |  |
Long-term purchase commitment | 200,744 |
Long-term purchase commitment, less than one year | 118,336 |
Long-term purchase commitment, one to three year | 70,274 |
Long-term purchase commitment, three to five year | $ 12,134 |

X
- Definition Long-Term Purchase Commitment, To Be Paid Year Four And Five + References No definition available. + Details
Name: | deck_LongTermPurchaseCommitmentToBePaidYearFourAndFive
Namespace Prefix: | deck_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Long-Term Purchase Commitment, To Be Paid, Year One + References No definition available. + Details
Name: | deck_LongTermPurchaseCommitmentToBePaidYearOne
Namespace Prefix: | deck_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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- Definition Long-Term Purchase Commitment, To Be Paid, Year Two And Three + References No definition available. + Details
Name: | deck_LongTermPurchaseCommitmentToBePaidYearTwoAndThree
Namespace Prefix: | deck_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- 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

X
- Definition The minimum amount the entity agreed to spend under the long-term purchase commitment. + References No definition available. + Details
Name: | us-gaap_LongTermPurchaseCommitmentAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Period covered by the long-term purchase commitment, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | us-gaap_LongtermPurchaseCommitmentPeriod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Cash received for refunds from suppliers during the current period. This element includes refunds from suppliers of materials; it excludes refunds from providers of fixed assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 25 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-25 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- 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
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Data Type: | xbrli:stringItemType
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Period Type: | duration

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- Definition Minimum amount of purchase arrangement in which the entity has agreed to expend funds to procure goods or services from a supplier. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of purchase arrangement to be paid in next fiscal year following current fiscal year. Includes, but is not limited to, recorded and unrecorded purchase obligations, long-term purchase commitment, and short-term purchase commitment. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References No definition available. + Details
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Balance Type: | credit
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X
- Definition Amount of purchase arrangement to be paid in second and third fiscal years following current fiscal year. Includes, but is not limited to, recorded and unrecorded purchase obligations, long-term purchase commitment, and short-term purchase commitment. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Amount of the recorded obligation to transfer funds in the future for fixed or minimum amounts or quantities of goods or services at fixed or minimum prices (for example, as in take-or-pay contracts or throughput contracts). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 440 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482648/440-10-50-6 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
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- Details
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- Details
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- Details
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- Details
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