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Unearned Revenue by Segment (Detail) - USD ($) $ in Millions | Dec. 31, 2020 | Jun. 30, 2020
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Contract With Customer Liability [Line Items] |  |
Unearned revenue | $ 33,387 | $ 39,180
Productivity and Business Processes |  |
Contract With Customer Liability [Line Items] |  |
Unearned revenue | 16,225 | 18,643
Intelligent Cloud |  |
Contract With Customer Liability [Line Items] |  |
Unearned revenue | 13,786 | 16,620
More Personal Computing |  |
Contract With Customer Liability [Line Items] |  |
Unearned revenue | $ 3,376 | $ 3,917

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