Share-Based Compensation (Changes in Nonvested Options) (Details) - Restricted Stock and Units [Member] $ / shares in Units, shares in Thousands, $ in Millions	6 Months Ended
	Aug. 04, 2018 USD ($) $ / shares shares
Number of Shares
Nonvested, Beginning Balance | shares	374
Granted | shares	651	[1]
Vested | shares	(94)
Cancelled | shares	(80)	[2]
Nonvested, Ending Balance | shares	851
Aggregate value | $	$ 42
Wtg. Avg. remaining contractual life (in years)	2 years 3 months 18 days
Weighted-Average Grant Date Fair Value per Share
Nonvested, Beginning Balance | $ / shares	$ 59.15
Granted | $ / shares	47.29	[1]
Vested | $ / shares	63.37
Cancelled | $ / shares	58.92	[2]
Nonvested, Ending Balance | $ / shares	$ 49.63

[1] Approximately 0.4 million performance-based RSUs were granted during the first quarter of 2018 and are included as granted in the table above. The number of performance-based RSUs that are ultimately earned may vary from 0% to 200% of target depending on the achievement relative to the Company's predefined financial performance targets

[2] In addition to forfeitures of restricted stock and RSUs, cancellations include adjustments that were made to performance-based RSUs previously granted. These adjustments reflect changes in estimates based upon the Company's current performance against predefined financial targets