Derivative Financial Instruments - Narrative (Details) - USD ($)	12 Months Ended
Jan. 26, 2020	Jan. 27, 2019
Derivative [Line Items]
Gain (loss) on ineffectiveness	$ 0	$ 0
Foreign currency forward contract
Derivative [Line Items]
Maximum maturity period	18 months

The net gain (loss) during the reporting period due to ineffectiveness in foreign currency cash flow hedges. Recognized in earnings.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (d)(1)
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624171-113959

Name:	us-gaap_GainLossOnForeignCurrencyCashFlowHedgeIneffectiveness
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration