Property Plant and Equipment (Tables)

12 Months Ended

Jan. 30, 2015

Property, Plant and Equipment [Abstract]

Schedule of Property, Plant and Equipment

Depreciation is recognized using the methods and estimated useful lives as follows:

	Depreciation method	Estimated useful lives (in years)
Computers and other equipment	Straight-line or declining-balance	2-10
Buildings	Straight-line	30-40
Building improvements and leasehold improvements	Straight-line	Shorter of lease term or 25
Office furniture	Straight-line or declining-balance	6-9
Electric generation facility	Straight-line	25

Property, plant, and equipment, net consisted of the following:

	January 30, 2015			January 31, 2014
	(in millions)
Electric generation facility	$	127		$	269
Computers and other equipment	166			204
Leasehold improvements	156			167
Buildings and improvements	107			113
Office furniture and fixtures	37			43
Land	26			27
Construction in progress	2			—
	621			823
Less accumulated depreciation and amortization	(313		)	(341		)
	$	308		$	482