Income Taxes Income Tax Items (Details) - USD ($) $ in Millions	12 Months Ended
	Feb. 03, 2018	Jan. 28, 2017
Income Tax Items [Line Items]
Other Tax Expense (Benefit)		$ (57)
Provisional tax impact of federal reform [Member]
Income Tax Items [Line Items]
Other Tax Expense (Benefit)	$ 57
Tax benefit from legal entity structuring that was also impacted by tax reform [Member]
Income Tax Items [Line Items]
Other Tax Expense (Benefit)	$ (23)