Shareholders' Equity (Details) - USD ($) shares in Millions, $ in Millions	3 Months Ended	6 Months Ended
Jul. 26, 2020	Jul. 26, 2020	Jul. 28, 2019
Equity [Abstract]
Aggregated number of shares repurchased under stock repurchase program (in shares)	260	260
Aggregated cost of shares repurchased	$ 7,080	$ 7,080
Remaining authorized repurchase amount	7,240	7,240
Dividends paid	$ 99	$ 197	$ 195

Cash outflow in the form of capital distributions and dividends to common shareholders, preferred shareholders and noncontrolling interests.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3291-108585

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration