Goodwill	12 Months Ended
Jan. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	GoodwillWe changed our reportable segments to "Graphics" and "Compute & Networking" starting with the first quarter of fiscal year 2021, as discussed in Note 17 of these Notes to the Consolidated Financial Statements. As a result, our reporting units also changed, and we reassigned the goodwill balance to the new reporting units based on their relative fair values. Comparative periods presented reflect this change. We determined there was no goodwill impairment immediately prior to the reorganization. As of January 31, 2021, the total carrying amount of goodwill was $4.19 billion and the amount of goodwill allocated to our Graphics and Compute & Networking reporting units was $347 million and $3.85 billion, respectively. As of January 26, 2020, the total carrying amount of goodwill was $618 million and the amount of goodwill allocated to our Graphics and Compute & Networking reporting units was $347 million and $271 million, respectively. Goodwill increased by $3.57 billion in fiscal year 2021 due to goodwill of $3.43 billion arising from the Mellanox acquisition, and goodwill of $143 million from other acquisition activities, all of which were allocated to the Compute & Networking reporting unit. During the fourth quarters of fiscal years 2021, 2020, and 2019, we completed our annual impairment tests and concluded that goodwill was not impaired in any of these years.

Goodwill

12 Months Ended

Jan. 31, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

GoodwillWe changed our reportable segments to "Graphics" and "Compute & Networking" starting with the first quarter of fiscal year 2021, as discussed in Note 17 of these Notes to the Consolidated Financial Statements. As a result, our reporting units also changed, and we reassigned the goodwill balance to the new reporting units based on their relative fair values. Comparative periods presented reflect this change. We determined there was no goodwill impairment immediately prior to the reorganization. As of January 31, 2021, the total carrying amount of goodwill was $4.19 billion and the amount of goodwill allocated to our Graphics and Compute & Networking reporting units was $347 million and $3.85 billion, respectively. As of January 26, 2020, the total carrying amount of goodwill was $618 million and the amount of goodwill allocated to our Graphics and Compute & Networking reporting units was $347 million and $271 million, respectively. Goodwill increased by $3.57 billion in fiscal year 2021 due to goodwill of $3.43 billion arising from the Mellanox acquisition, and goodwill of $143 million from other acquisition activities, all of which were allocated to the Compute & Networking reporting unit. During the fourth quarters of fiscal years 2021, 2020, and 2019, we completed our annual impairment tests and concluded that goodwill was not impaired in any of these years.