Numonyx Holdings B.V. - 2 (Details) (Numonyx Holdings BV [Member], USD $) In Millions, except Per Share data	3 Months Ended	9 Months Ended
Jun. 03, 2010	Jun. 03, 2010	May 07, 2010
Numonyx Holdings BV [Member]
Business Acquisition [Line Items]
Name of acquired entity	Numonyx Holdings B.V.
Date of acquisition	5/7/2010
Recognized amounts of identifiable assets acquired and liabilities assumed: [Abstract]
Fair value of the consideration paid for Numonyx			$ 1,112
Net assets acquired			1,549
Gain on acquisition of Numonyx			437
Income tax benefit recognized in connection with the acquisition of Numonyx			51
Business Acquisition, Pro Forma Information [Abstract]
Net sales	2,781	7,489
Net income	987	1,538
Net income attributable to Micron	$ 966	$ 1,505
Earnings per share: [Abstract]
Basic (in dollars per share)	$ 0.98	$ 1.53
Diluted (in dollars per share)	$ 0.86	$ 1.38

The pro forma net income (loss) attributable to Micron for the period as if the business combination or combinations had been completed at the beginning of a period.

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In a business combination in which the amount of net identifiable assets acquired and liabilities assumed exceeds the aggregate consideration transferred or to be transferred (as defined), this element represents the amount of gain recognized by the entity.

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The sum of the current income tax expense (benefit) and the deferred income tax expense (benefit) allocated to income (loss) from business combinations.

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The acquisition-date fair value of the equity interests of the acquirer, including the number of instruments or interests issued or issuable in consideration for the business combination.

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Month, date and year when the results of operations of the acquired entity began to be included in the income statement of the combined entity. For disclosure purposes, the effective date of an acquisition equates to the acquisition date, when acquisition date is defined as the date on which the acquirer obtained control of the acquired entity. The effective date of an acquisition may be either earlier or later than the date on which the acquisition agreement was executed (closed).

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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.

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Name of the acquired entity.

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The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period

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The pro forma diluted net income per share for a period as if the business combination or combinations had been completed at the beginning of a period

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The pro forma net income (loss) for the period as if the business combination or combinations had been completed at the beginning of a period

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The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period

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The net amount recognized as of the acquisition date for the aggregate identifiable assets acquired in excess of or less than the aggregate liabilities assumed.

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