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Commitments and Contingencies - Additional Information (Details)																	4 Months Ended	12 Months Ended			63 Months Ended
	Jun. 22, 2021 patent	May 11, 2021 patent	Mar. 10, 2021 patent	Feb. 26, 2021 patent	Oct. 05, 2020 USD ($) patent	May 13, 2020 patent	Apr. 30, 2020 patent	Apr. 01, 2020 USD ($)	Feb. 05, 2020 subsidiary	Jan. 21, 2020 patent	Jul. 17, 2019 USD ($)	Jun. 12, 2019 patent	Feb. 13, 2018 patent	May 25, 2017 USD ($)	May 12, 2016 USD ($)	Sep. 04, 2013 patent	Aug. 25, 2020 patent customer	Jul. 31, 2021 USD ($)	Jul. 25, 2020 USD ($)	Jul. 27, 2019 USD ($)	Jul. 31, 2021 USD ($)
Loss Contingencies [Line Items]
Provision for purchase commitment liability																		$ 76,000,000	$ 139,000,000	$ 95,000,000
Future compensation expense & contingent consideration (up to)																		719,000,000			$ 719,000,000
Commitments and contingencies
Volume of channel partner financing																		26,700,000,000	26,900,000,000	29,600,000,000
Balance of the channel partner financing subject to guarantees																		1,300,000,000	1,100,000,000		1,300,000,000
Financing provided by third parties for leases and loans related to end users on which the Company has provided guarantees																		10,000,000	9,000,000	$ 14,000,000
Brazilian Tax Authority \| Tax years 2003 through 2007
Loss Contingencies [Line Items]
Income tax examination, tax																		155,000,000
Income tax examination, interest																		771,000,000
Income tax examination, penalties																		$ 384,000,000
Huawei \| Pending Litigation
Loss Contingencies [Line Items]
Number of entities requesting indemnification \| subsidiary									7
Estech \| Pending Litigation
Loss Contingencies [Line Items]
Number of entities requesting indemnification \| customer																	7
Number of allegedly infringed patents (patent) \| patent																	3
SRI International
Loss Contingencies [Line Items]
Damages awarded, value															$ 24,000,000
SRI International \| Pending Litigation
Loss Contingencies [Line Items]
Number of allegedly infringed patents (patent) \| patent																2
Damages awarded, value								$ 8,000,000						$ 57,000,000
Percentage of royalty awarded														3.50%
Damages paid, value																					28,000,000
Centripetal \| Pending Litigation \| Patent Infringement \| U.S.
Loss Contingencies [Line Items]
Number of allegedly infringed patents (patent) \| patent													11
Damages awarded, value					$ 1,900,000,000
Number of allegedly infringed patents, petitioned (patent) \| patent													9
Number of allegedly infringed patents, unpatentable (patent) \| patent		4	3										5
Number of patents found infringed (patent) \| patent					4
Damages awarded, initial value					$ 756,000,000
Damages awarded, enhanced damages for willful infringement					1,100,000,000
Damages awarded, pre-judgement interest					$ 14,000,000
Royalty awarded against revenue, first three-year term, percentage					10.00%
Royalty awarded against revenue, second three-year term, percentage					5.00%
Centripetal \| Pending Litigation \| Patent Infringement \| European
Loss Contingencies [Line Items]
Number of allegedly infringed patents (patent) \| patent	1						3
Centripetal \| Pending Litigation \| Patent Infringement \| German
Loss Contingencies [Line Items]
Number of allegedly infringed patents (patent) \| patent	1
Centripetal \| Pending Litigation \| Patent Infringement, IPR Proceedings \| U.S.
Loss Contingencies [Line Items]
Number of allegedly infringed patents (patent) \| patent													6
Centripetal \| Pending Litigation \| Patent Infringement, Patent Trial and Appeal Board \| U.S.
Loss Contingencies [Line Items]
Number of allegedly infringed patents (patent) \| patent													7
Centripetal \| Pending Litigation \| Patent Infringement, Not subject to IPR Proceedings \| U.S.
Loss Contingencies [Line Items]
Number of allegedly infringed patents (patent) \| patent													5
Ramot \| Pending Litigation \| Patent Infringement
Loss Contingencies [Line Items]
Number of allegedly infringed patents (patent) \| patent				2								3
Monarch \| Pending Litigation \| Patent Infringement
Loss Contingencies [Line Items]
Number of allegedly infringed patents (patent) \| patent						1				3
Viasat, Inc. \| Pending Litigation \| Contract claims
Loss Contingencies [Line Items]
Damages awarded, value											$ 49,000,000
Viasat, Inc. \| Pending Litigation \| Trade secret misappropriation
Loss Contingencies [Line Items]
Damages awarded, value											1
Viasat, Inc. \| Pending Litigation \| Counterclaim, contract and trade secret
Loss Contingencies [Line Items]
Damages awarded, value											$ 1
Minimum
Loss Contingencies [Line Items]
Warranty period for products																		90 days
Channel partners revolving short-term financing payment term																		60 days
Minimum \| Centripetal \| Pending Litigation \| Patent Infringement \| U.S.
Loss Contingencies [Line Items]
Annual royalty awarded against revenue, first three-year term					$ 168,000,000
Annual royalty awarded against revenue, second three-year term					84,000,000
Maximum
Loss Contingencies [Line Items]
Warranty period for products																		5 years
Channel partners revolving short-term financing payment term																		90 days
End user lease and loan term																		3 years
Maximum \| Centripetal \| Pending Litigation \| Patent Infringement \| U.S.
Loss Contingencies [Line Items]
Annual royalty awarded against revenue, first three-year term					300,000,000
Annual royalty awarded against revenue, second three-year term					$ 150,000,000
Non-marketable equity securities and equity method investments
Loss Contingencies [Line Items]
Commitments and contingencies																		$ 200,000,000	300,000,000		200,000,000
Inventory
Loss Contingencies [Line Items]
Recorded Unconditional Purchase Obligation																		$ 151,000,000	$ 141,000,000		$ 151,000,000