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Brazilian authority claim of import tax evasion by importer penalties portion

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Brazilian authority claim of import tax evasion by importer, tax portion

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Represents the caption on the face of the balance sheet to indicate that the entity has entered into (1) purchase or supply arrangements that will require expending a portion of its resources to meet the terms thereof, and (2) is exposed to potential losses or, less frequently, gains, arising from (a) possible claims against a company's resources due to future performance under contract terms, and (b) possible losses or likely gains from uncertainties that will ultimately be resolved when one or more future events that are deemed likely to occur do occur or fail to occur.

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Amount of litigation expense, including but not limited to legal, forensic, accounting, and investigative fees.

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Commitments and Contingencies (Additional Information) (Details) $ in Millions							3 Months Ended		6 Months Ended
	May 30, 2017 USD ($)	May 25, 2017 USD ($)	Mar. 14, 2017 USD ($)	Mar. 03, 2017 USD ($) patent	May 12, 2016 USD ($)	Sep. 04, 2013 patent	Jan. 26, 2019 USD ($)	Jan. 27, 2018 USD ($)	Jan. 26, 2019 USD ($)	Jan. 27, 2018 USD ($)	Jul. 28, 2018 USD ($)
Contingency [Line Items]
Liability for purchase commitments							$ 148.0		$ 148.0		$ 159.0
Future compensation expense & contingent consideration (up to)							528.0		528.0
Commitments and contingencies
Volume of channel partner financing							7,300.0	$ 6,900.0	14,500.0	$ 13,600.0
Balance of the channel partner financing subject to guarantees							1,325.0		1,325.0		1,000.0
Financing provided by third parties for leases and loans on which the Company has provided guarantees							6.0	$ 12.0	9.0	26.0
Brazilian authority claim of import tax evasion by importer tax portion							215.0		215.0
Brazilian authority claim of import tax evasion by importer interest portion							1,400.0		1,400.0
Brazilian authority claim of import tax evasion by importer penalties portion							1,000.0		$ 1,000.0
SRI International
Contingency [Line Items]
Damages awarded, value					$ 23.7
SRI International \| Pending Litigation
Contingency [Line Items]
Damages awarded, value		$ 57.0
Number of allegedly infringed patents (patent) \| patent						2
Percentage of royalty awarded		3.50%
Arista Networks, Inc vs. Company
Contingency [Line Items]
Proceeds from Legal Settlements							400.0
Patent Infringement \| Sprint Communications Company, L.P. vs. Time Warner Cable, Inc. \| Pending Litigation
Contingency [Line Items]
Number of patents found infringed (patent) \| patent				5
Damages awarded, value			$ 139.8	$ 139.8
Percentage of post-judgment interest awarded			1.06%
Pre-judgment interest requested	$ 20.3
Patent Indemnification
Contingency [Line Items]
Legal and indemnification settlement										$ 127.0
Minimum
Contingency [Line Items]
Warranty period for products									90 days
Channel partners revolving short-term financing payment term									60 days
Maximum
Contingency [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
Investments in privately held companies (impaired)
Contingency [Line Items]
Commitments and contingencies							$ 357.0		$ 357.0		$ 223.0