Fair Value Measurements - Auction Rate Securities (Details) (USD $) In Millions, unless otherwise specified	11 Months Ended	12 Months Ended
	Feb. 02, 2013	Feb. 01, 2014
Student loan bonds [Member]
Fair Value, Assets Measured On Recurring Basis, Unobservable Input Reconciliation.
Balance at the beginning of the period	$ 80	$ 19
Changes in unrealized losses included in other comprehensive income	4	1
Sales	(65)	(13)
Balance at the end of the period	19	7
Municipal revenue bonds [Member]
Fair Value, Assets Measured On Recurring Basis, Unobservable Input Reconciliation.
Balance at the beginning of the period	2	2
Changes in unrealized losses included in other comprehensive income	0	0
Sales	0	0
Balance at the end of the period	2	2
Total auction rate securities [Member]
Fair Value, Assets Measured On Recurring Basis, Unobservable Input Reconciliation.
Balance at the beginning of the period	82	21
Changes in unrealized losses included in other comprehensive income	4	1
Sales	(65)	(13)
Balance at the end of the period	$ 21	$ 9