Retirement Benefits (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 30, 2016	Jan. 31, 2015	Feb. 01, 2014
Retirement Benefits [Abstract]
Expense Related to the Qualified Plan	$ 64	$ 59	$ 56
Non-Qualified Plan Table Text Block [Line Items]
Non-Qualified Plan, Benefit Obligation	274	257	243
Non-Qualified Plan, Contributions by Plan Participants	15	10
Non-Qualified Plan, Contributions by Employer	17	10
Non-Qualified Plan, Interest Cost	13	14
Non-Qualified Plan, Benefits Paid	(28)	(20)
Non-Qualified Plan [Member]
Non-Qualified Plan Table Text Block [Line Items]
Expense related to the Non-Qualified Plan	$ 30	$ 24	$ 22