Stock-Based Compensation (Summary Of Stock Option Activity) (Details) - Stock options [Member] - USD ($) $ / shares in Units, shares in Millions, $ in Millions					12 Months Ended
	Feb. 29, 2016	Feb. 24, 2015	Mar. 04, 2014	[1]	Jan. 28, 2017	Jan. 30, 2016	Jan. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding, beginning of year (in shares)					13.2
Outstanding, beginning of year (in dollars per share)					$ 47
Granted (in shares)					2.9
Granted (in dollars per share)	$ 51	$ 81	$ 61		$ 50
Exercised (in shares)					(1.7)
Exercised (in dollars per share)					$ 37
Forfeited or cancelled (in shares)					(0.9)
Forfeited or cancelled (in dollars per share)					$ 57
Outstanding, end of year (in shares)					13.5	13.2
Outstanding, end of year (in dollars per share)					$ 48	$ 47
Outstanding, end of year, weighted-average remaining contractual life (years)					6 years
Outstanding, end of year, aggregate intrinsic value					$ 45
Exercisable, end of year (in shares)					8.1
Exercisable, end of year (in dollars per share)					$ 43
Exercisable, end of year, weighted-average remaining contractual life (years)					5 years
Exercisable, end of year, aggregate intrinsic value					$ 43
Vested or expected to vest, end of year (in shares)					13.0
Vested or expected to vest, end of year (in dollars per share)					$ 48
Vested or expected to vest, end of year, weighted-average remaining contractual life (years)					6 years
Vested or expected to vest, end of year, aggregate intrinsic value					$ 45
Aggregate intrinsic value of options exercised					30	$ 62	$ 97
Fair value of stock options vested					$ 40	$ 44	$ 41

[1] As part of the Trunk Club acquisition in 2014, the weighted-average fair value per option at the grant date was $59.