Schedule of Stock-Based Compensation and Related Tax Benefits Recognized (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Oct. 31, 2014	Nov. 01, 2013	Oct. 31, 2014	Nov. 01, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Tax benefits recognized from stock-based compensation	$ 4	$ 5	$ 13	$ 17
Continuing Operations
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense recorded in continuing operations	10	14	33	44
Continuing Operations | Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense recorded in continuing operations	1	4	4	9
Continuing Operations | Vesting Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense recorded in continuing operations	9	10	27	35
Continuing Operations | Vested Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense recorded in continuing operations	0	0	2	0
Discontinued Operations
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense recorded in continuing operations	$ 0	$ 6	$ 0	$ 21