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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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End user lease and loan (with registrant guarantee) term.

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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 rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

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Number of another entity's patents that the entity has allegedly infringed.

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Commitments and Contingencies - Additional Information (Details) $ in Millions								12 Months Ended
	Sep. 18, 2019 USD ($)	May 30, 2017 USD ($)	May 25, 2017 USD ($)	Mar. 14, 2017 USD ($)	Mar. 03, 2017 USD ($) patent	May 12, 2016 USD ($)	Sep. 04, 2013 patent	Jul. 27, 2019 USD ($)	Jul. 28, 2018 USD ($)	Jul. 29, 2017 USD ($)
Site Contingency [Line Items]
Rent expense								$ 433.0	$ 442.0	$ 403.0
Liability for purchase commitments								129.0	159.0
Future compensation expense & contingent consideration (maximum)								440.0
Commitments and contingencies
Volume of channel partner financing								29,600.0	28,200.0	27,000.0
Balance of the channel partner financing subject to guarantees								1,400.0	1,000.0
Financing provided by third parties for leases and loans related to End Users on which the Company has provided guarantees								14.0	35.0	$ 51.0
Brazilian authority claim of import tax evasion by importer tax portion								214.0
Brazilian authority claim of import tax evasion by importer interest portion								1,400.0
Brazilian authority claim of import tax evasion by importer penalties portion								$ 1,000.0
SRI International
Site Contingency [Line Items]
Damages awarded, value						$ 23.7
Pending Litigation \| SRI International
Site Contingency [Line Items]
Damages awarded, value			$ 57.0
Number of patents infringed upon \| patent							2
Percentage of royalty awarded			3.50%
Pending Litigation \| SRI International \| Forecast
Site Contingency [Line Items]
Payment	$ 25.9
Patent Infringement \| Pending Litigation \| Sprint Communications Company L.P. Vs. Time Warner Cable Inc.
Site Contingency [Line Items]
Number of patents found infringed \| 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
Site Contingency [Line Items]
Legal and indemnification settlement									127.0
Minimum
Site Contingency [Line Items]
Warranty period for products								90 days
Channel partners revolving short-term financing payment term								60 days
Maximum
Site 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
Non-marketable equity securities and equity method investments
Site Contingency [Line Items]
Commitments and contingencies								$ 326.0	$ 223.0