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v3.19.3.a.u2

Leases and Other Commitments - Long-Term Commitments (Details) $ in Millions | Jan. 03, 2020 USD ($)
--- | ---
Leases [Abstract] |
2020 | $ 123
2021 | 304
2022 | 390
2023 | 407
2024 | 180
Thereafter | 338
Total | $ 1,742

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- References No definition available. + Details
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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_
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- Definition Minimum amount of purchase arrangement maturing after the fifth fiscal year following the latest fiscal year. Includes, but not limited to, recorded and unrecorded purchase obligations, long-term purchase commitments, and short-term purchase commitments. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
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- Definition Minimum amount of purchase arrangement maturing in the fifth fiscal year following the latest fiscal year. Includes, but not limited to, recorded and unrecorded purchase obligations, long-term purchase commitments, and short-term purchase commitments. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
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- Definition Minimum amount of purchase arrangement maturing in the fourth fiscal year following the latest fiscal year. Includes, but not limited to, recorded and unrecorded purchase obligations, long-term purchase commitments, and short-term purchase commitments. + References No definition available. + Details
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- Definition Minimum amount of purchase arrangement maturing in the second fiscal year following the latest fiscal year. Includes, but not limited to, recorded and unrecorded purchase obligations, long-term purchase commitments, and short-term purchase commitments. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
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- Definition Minimum amount of purchase arrangement maturing in the third fiscal year following the latest fiscal year. Includes, but not limited to, recorded and unrecorded purchase obligations, long-term purchase commitments, and short-term purchase commitments. + References No definition available. + Details
Name: | us-gaap_PurchaseObligationDueInThirdYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Purchase Obligation, Due Remainder Of Fiscal Year + References No definition available. + Details
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Namespace Prefix: | wdc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant