Goodwill - Narrative (Details) - USD ($)	12 Months Ended
Jan. 27, 2019	Jan. 28, 2018	Jan. 29, 2017
Goodwill [Line Items]
Goodwill	$ 618,000,000	$ 618,000,000
Changes in goodwill	0	0	$ 0
Goodwill impairment loss	0	$ 0	$ 0
GPU
Goodwill [Line Items]
Goodwill	210,000,000
Tegra Processor
Goodwill [Line Items]
Goodwill	$ 408,000,000

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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-Name Accounting Standards Codification
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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of increase (decrease) of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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