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Segments and Geographic Information (Details 2) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Oct. 27, 2012	Oct. 29, 2011	Oct. 27, 2012	Oct. 29, 2011
Segment and Geographic Information
Net income	$ 36	$ 32	$ 102	$ 79
Interest expense	60	62	187	188
Loss on early extinguishment of debt	3	1	3	16
Provision for income taxes	20	19	58	48
Depreciation and amortization	25	25	71	75
Reporting segment
Segment and Geographic Information
Net income	36	32	102	79
Interest expense	60	62	187	188
Loss on early extinguishment of debt	3	1	3	16
Provision for income taxes	20	19	58	48
Depreciation and amortization	25	25	71	75
EBITDA (excluding loss on early extinguishment of debt)	$ 144	$ 139	$ 421	$ 406

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to continuing operations.

The cost of borrowed funds accounted for as interest that was charged against earnings during the period.