Restructuring Charges (Schedule Of Pre-Tax Charges And Remaining Costs) (Details) (USD $) In Millions, unless otherwise specified	Feb. 01, 2015
2014 Initiatives [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	$ 56
Restructuring and Related Cost, Cost Incurred to Date	(54)
Restructuring and Related Cost, Expected Cost Remaining	2
2014 Initiatives [Member] | Severance Pay And Benefits [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	42
Restructuring and Related Cost, Cost Incurred to Date	(41)
Restructuring and Related Cost, Expected Cost Remaining	1
2014 Initiatives [Member] | Asset Impairment Accelerated Depreciation [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	12
Restructuring and Related Cost, Cost Incurred to Date	(12)
Restructuring and Related Cost, Expected Cost Remaining	0
2014 Initiatives [Member] | Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	2
Restructuring and Related Cost, Cost Incurred to Date	(1)
Restructuring and Related Cost, Expected Cost Remaining	1
2013 Initiatives [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	148
Restructuring and Related Cost, Cost Incurred to Date	(146)
Restructuring and Related Cost, Expected Cost Remaining	2
2013 Initiatives [Member] | Severance Pay And Benefits [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	35
Restructuring and Related Cost, Cost Incurred to Date	(35)
Restructuring and Related Cost, Expected Cost Remaining	0
2013 Initiatives [Member] | Asset Impairment Accelerated Depreciation [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	99
Restructuring and Related Cost, Cost Incurred to Date	(99)
Restructuring and Related Cost, Expected Cost Remaining	0
2013 Initiatives [Member] | Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	14
Restructuring and Related Cost, Cost Incurred to Date	(12)
Restructuring and Related Cost, Expected Cost Remaining	$ 2