Segment Information (Sales and Division Operating Results for Reportable Segments) (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Oct. 28, 2017	Oct. 29, 2016	Oct. 28, 2017	Oct. 29, 2016
Segment Reporting Information [Line Items]
Sales		$ 1,870	$ 1,886	$ 5,572	$ 5,653
Division profit		180	245	592	775
Less: Pension litigation and reorganization charges	[1],[2]	13		63
Less: Corporate expense		12	17	34	53
Income from operations		155	228	495	722
Interest (income) / expense, net			1	(1)	2
Other income	[3]	1		2	3
Income before income taxes		156	227	498	723
Athletic Stores [Member]
Segment Reporting Information [Line Items]
Sales		1,612	1,644	4,819	4,955
Operating results before restructuring income	[4]	154	213	504	683
Direct-to-Customers [Member]
Segment Reporting Information [Line Items]
Sales		258	242	753	698
Operating results before restructuring income		26	32	88	92
Operating Segments [Member]
Segment Reporting Information [Line Items]
Income from operations		$ 155	$ 228	$ 495	$ 722

[1] Included in the thirteen and thirty-nine weeks ended October 28, 2017 is $13 million in pre-tax reorganization costs related to the reduction and reorganization of division and corporate staff that occurred in the third quarter of 2017, described more fully in Note 3, Litigation and Other Charges

[2] Included in the thirty-nine weeks ended October 28, 2017 is a pre-tax charge of $50 million relating to a pension litigation matter described further in Note 14, Legal Proceedings.

[3] Other income includes non-operating items, such as lease termination gains, royalty income, insurance recoveries, and the changes in fair value, premiums paid, and realized gains and losses associated with foreign currency option contracts.

[4] Included in the thirteen and thirty-nine weeks ended October 29, 2016 is a $6 million pre-tax non-cash impairment charge to write down long-lived store assets of Runners Point and Sidestep. See Note 3, Litigation and Other Charges for additional information