The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amortizable Intangible Assets (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 29, 2018	Jul. 30, 2017	Jul. 29, 2018	Jul. 30, 2017	Jan. 28, 2018
Amortizable intangible assets components
Amortization expense	$ 6	$ 14	$ 17	$ 29
Future amortization expense associated with intangible assets
Remainder of fiscal 2019	12		12
Fiscal 2020	20		20
Fiscal 2021	11		11
Fiscal 2022	4		4
Fiscal 2023	3		3
Fiscal 2024	1		1
Acquisition-related intangible assets
Amortizable intangible assets components
Gross Carrying Amount	195		195		$ 195
Accumulated Amortization	(184)		(184)		(180)
Net Carrying Amount	11		11		15
Patents and licensed technology
Amortizable intangible assets components
Gross Carrying Amount	485		485		469
Accumulated Amortization	(445)		(445)		(432)
Net Carrying Amount	40		40		37
Total intangible assets
Amortizable intangible assets components
Gross Carrying Amount	680		680		664
Accumulated Amortization	(629)		(629)		(612)
Net Carrying Amount	$ 51		$ 51		$ 52