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v3.19.2

DEFERRED COMPENSATION PLANS (Details) - Other Postretirement Plans [Member] - USD ($) $ in Millions | May 31, 2019 | May 31, 2018
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Deferred Compensation Plan Disclosure [Line Items] |  |
Deferred compensation plan assets | $ 566 | $ 555
Deferred compensation plan liabilities | $ 566 | $ 555

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- Definition Deferred compensation plan disclosure [Line Items] + References No definition available. + Details
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Namespace Prefix: | orcl_
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Balance Type: | na
Period Type: | duration

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- Definition Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements payable beyond one year (or the operating cycle, if longer). + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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- Definition Carrying amount as of the balance sheet date of assets held under deferred compensation agreements. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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Balance Type: | debit
Period Type: | instant

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |