Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) (USD $) In Millions, unless otherwise specified	May 02, 2015	Jan. 31, 2015	May 03, 2014
Level 1
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets measured at fair value on recurring basis	$ 0	$ 0	$ 0
Liabilities measured at fair value on recurring basis	0	0	0
Level 1 | Auction rate security
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets measured at fair value on recurring basis	0	0	0
Level 1 | Short-term investments
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets measured at fair value on recurring basis	0	0	0
Level 1 | Forward foreign exchange contracts
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Liabilities measured at fair value on recurring basis	0	0	0
Level 2
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets measured at fair value on recurring basis	6	6	8
Liabilities measured at fair value on recurring basis	5	5	2
Level 2 | Auction rate security
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets measured at fair value on recurring basis	6	6	6
Level 2 | Short-term investments
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets measured at fair value on recurring basis	0	0	2
Level 2 | Forward foreign exchange contracts
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Liabilities measured at fair value on recurring basis	5	5	2
Level 3
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets measured at fair value on recurring basis	0	0	0
Liabilities measured at fair value on recurring basis	0	0	0
Level 3 | Auction rate security
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets measured at fair value on recurring basis	0	0	0
Level 3 | Short-term investments
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets measured at fair value on recurring basis	0	0	0
Level 3 | Forward foreign exchange contracts
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Liabilities measured at fair value on recurring basis	$ 0	$ 0	$ 0