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Restructuring Initiatives (Costs) (Details) (2015 Restructuring, USD $) In Millions, unless otherwise specified	3 Months Ended
	May 02, 2015
Restructuring Cost and Reserve [Line Items]
Charges during period	$ 103us-gaap_RestructuringCharges
Severance
Restructuring Cost and Reserve [Line Items]
Charges during period	99
Pension and other
Restructuring Cost and Reserve [Line Items]
Charges during period	4
SG&A
Restructuring Cost and Reserve [Line Items]
Charges during period	103
SG&A \| Severance
Restructuring Cost and Reserve [Line Items]
Charges during period	99
SG&A \| Pension and other
Restructuring Cost and Reserve [Line Items]
Charges during period	$ 4

- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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