Accumulated Other Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended
	Apr. 30, 2016	May. 02, 2015	Jan. 30, 2016	Jan. 31, 2015
Foreign currency translation	$ 31	$ 6
Change in fair value of derivative financial instruments	(89)	(10)
Amounts reclassified from accumulated other comprehensive income	(7)	(21)
Other comprehensive income (loss), net	(65)	(25)
Accumulated Other Comprehensive Income (Loss), Net of Tax	20	140	$ 85	$ 165
Accumulated Translation Adjustment [Member]
Foreign currency translation	31	6
Change in fair value of derivative financial instruments	0	0
Amounts reclassified from accumulated other comprehensive income	0	0
Other comprehensive income (loss), net	31	6
Accumulated Other Comprehensive Income (Loss), Net of Tax	53	66	22	60
Derivatives in cash flow hedging relationships
Foreign currency translation	0	0
Change in fair value of derivative financial instruments	(89)	(10)
Amounts reclassified from accumulated other comprehensive income	(7)	(21)
Other comprehensive income (loss), net	(96)	(31)
Accumulated Other Comprehensive Income (Loss), Net of Tax	$ (33)	$ 74	$ 63	$ 105