Fair Value Measurements - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	Feb. 02, 2013	Jan. 28, 2012
Fair Value, Measurement Inputs, Disclosure [Line Items]
Available-for-sale securities	$ 54
Short-term investments	48
Available-for-sale securities, auction rate security	$ 6	$ 5

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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