Fair Value Measurements and Concentrations of Credit Risk (Tables)

12 Months Ended

Jan. 31, 2015

Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]

Fair Value of Plan Assets Measured on a Recurring Basis

The following table shows the Company’s financial assets that are required to be measured at fair value on a recurring basis, by level within the hierarchy as defined by applicable accounting standards:

	January 31, 2015								February 1, 2014
			Fair Value Measurements								Fair Value Measurements
	Total		Quoted Prices in Active Markets for Identical  Assets (Level 1)		Significant Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total		Quoted Prices in Active Markets for Identical  Assets (Level 1)		Significant Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
	(millions)
Marketable equity and debt securities	$	97	$	—	$	97	$	—	$	75	$	—	$	75	$	—

Estimated Fair Values of Company's Long Term Debt

The following table shows the estimated fair value of the Company’s long-term debt:

	January 31, 2015						February 1, 2014
	Notional Amount		Carrying Amount		Fair Value		Notional Amount		Carrying Amount		Fair Value
	(millions)
Long-term debt	$	7,090	$	7,236	$	8,219	$	6,522	$	6,684	$	7,171

Fair Value of Plan Assets Measured on a Nonrecurring Basis

The following table shows certain of the Company’s non-financial assets that were measured at fair value on a nonrecurring basis during 2014 and 2013:

	January 31, 2015								February 1, 2014
			Fair Value Measurements								Fair Value Measurements
	Total		Quoted Prices in Active Markets for Identical  Assets (Level 1)		Significant Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total		Quoted Prices in Active Markets for Identical  Assets (Level 1)		Significant Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
	(millions)
Long-lived assets held and used	$	8	$	—	$	—	$	8	$	13	$	—	$	—	$	13