Commitments and Contingencies - Additional Information (Details)																			3 Months Ended		9 Months Ended		60 Months Ended
	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 patent	Jan. 21, 2020 patent	Jul. 17, 2019 USD ($)	Jun. 12, 2019 patent	Feb. 13, 2018 patent	May 25, 2017 USD ($)	Mar. 03, 2017 USD ($) patent	Jan. 06, 2017 patent	May 12, 2016 USD ($)	Sep. 21, 2015 patent company	Sep. 04, 2013 patent	May 01, 2021 USD ($)	Apr. 25, 2020 USD ($)	May 01, 2021 USD ($)	Apr. 25, 2020 USD ($)	May 01, 2021 USD ($)	Jul. 25, 2020 USD ($)
Loss Contingencies [Line Items]
Provision for purchase commitment liability																					$ 35,000,000	$ 131,000,000
Future compensation expense & contingent consideration (up to)																			$ 616,000,000		616,000,000		$ 616,000,000
Commitments and contingencies
Volume of channel partner financing																			6,600,000,000	$ 6,300,000,000	19,500,000,000	20,500,000,000
Balance of the channel partner financing subject to guarantees																			1,300,000,000		1,300,000,000		1,300,000,000	1,100,000,000
Financing provided by third parties for leases and loans on which the Company has provided guarantees																			1,000,000	$ 2,000,000	8,000,000	$ 8,000,000
Tax Year 2003 - 2007 | Brazilian tax authority
Loss Contingencies [Line Items]
Income tax examination, tax																					149,000,000
Income tax examination, interest																					735,000,000
Income tax examination, penalties																					$ 368,000,000
Litigation resolved | Sprint Communications Company, L.P. vs. Time Warner Cable, Inc. | Patent Infringement
Loss Contingencies [Line Items]
Number of patents found infringed (patent) | patent														5
Damages awarded, value														$ 140,000,000
Pre and Post judgment interest awarded														$ 10,000,000
Pending litigation | ChanBond
Loss Contingencies [Line Items]
Number of service provider companies | company																	13
Number of allegedly infringed patents (patent) | patent																	3
Pending litigation | Huawei vs. Verizon, E.D. Tex
Loss Contingencies [Line Items]
Number of allegedly infringed patents (patent) | patent								4
Pending litigation | Huawei vs. Verizon, W.D. Tex
Loss Contingencies [Line Items]
Number of allegedly infringed patents (patent) | patent								4
Pending litigation | SRI International
Loss Contingencies [Line Items]
Damages awarded, value							$ 8,000,000						$ 57,000,000			$ 24,000,000
Number of allegedly infringed patents (patent) | patent																		2
Percentage of royalty awarded													3.50%
Payment																							28,000,000
Pending litigation | Centripetal
Loss Contingencies [Line Items]
Damages awarded, value				$ 1,900,000,000
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%
Pending litigation | Centripetal | Patent Infringement
Loss Contingencies [Line Items]
Number of patents found infringed (patent) | patent				4
Number of allegedly infringed patents (patent) | patent												11
Number of allegedly infringed patents, petitioned (patent) | patent												9
Number of allegedly infringed patents, unpatentable (patent) | patent		3										5
Pending litigation | Centripetal | Patent Infringement | Subsequent event
Loss Contingencies [Line Items]
Number of allegedly infringed patents, unpatentable (patent) | patent	4
Pending litigation | Centripetal | Patent Infringement, IPR Proceedings
Loss Contingencies [Line Items]
Number of allegedly infringed patents (patent) | patent												6
Pending litigation | Centripetal | Patent Infringement, Patent Trial and Appeal Board
Loss Contingencies [Line Items]
Number of allegedly infringed patents (patent) | patent												7
Pending litigation | Centripetal | Patent Infringement, Not Subject to IPR Proceedings
Loss Contingencies [Line Items]
Number of allegedly infringed patents (patent) | patent												5
Pending litigation | Centripetal | Patent Infringement, European Patents
Loss Contingencies [Line Items]
Number of allegedly infringed patents (patent) | patent						3
Pending litigation | Finjan | Patent Infringement
Loss Contingencies [Line Items]
Number of allegedly infringed patents (patent) | patent															5
Pending litigation | Ramot | Patent Infringement
Loss Contingencies [Line Items]
Number of allegedly infringed patents (patent) | patent			2								3
Pending litigation | Monarch | Patent Infringement
Loss Contingencies [Line Items]
Number of allegedly infringed patents (patent) | patent					1				3
Pending litigation | Viasat, Inc. | Contract claims
Loss Contingencies [Line Items]
Damages awarded, value										$ 49,000,000
Pending litigation | Viasat, Inc. | Trade secret misappropriation
Loss Contingencies [Line Items]
Damages awarded, value										1
Pending litigation | Viasat, Inc. | 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 | Pending litigation | Centripetal
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 | Pending litigation | Centripetal
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
COVID-19
Loss Contingencies [Line Items]
Increase in certain channel partners revolving short-term financing payment term																					30 days
Investments in privately held companies
Loss Contingencies [Line Items]
Commitments and contingencies																			200,000,000		$ 200,000,000		200,000,000	300,000,000
Inventories
Loss Contingencies [Line Items]
Liability for purchase commitments																			$ 129,000,000		$ 129,000,000		$ 129,000,000	$ 141,000,000