Micron Shareholders' Equity and Noncontrolling Interests in Subsidiaries Shareholders' Equity - Capped Call Transactions (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Nov. 29, 2012	Dec. 01, 2011
Option Indexed to Issuer's Equity [Line Items]
Option indexed to issuers equity cash received upon settlement	$ 24	$ 0
Purchased Call Option [Member] | 2013 convertible senior notes [Member]
Option Indexed to Issuer's Equity [Line Items]
Option indexed to issuer's equity, shares (in shares)	45.2
Option indexed to issuer's equity, strike price (in dollars per share)	5.08
Option Indexed to Issuer's Equity, capped ceiling	$ 6.64