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Commitments and Contingencies (Details) $ in Millions |  |  |  | 1 Months Ended | 3 Months Ended
--- | --- | --- | --- | --- | ---
Aug. 12, 2019 statement | May 17, 2019 patent | May 01, 2019 patent | Nov. 06, 2019 patent | Nov. 30, 2020 USD ($) | Nov. 30, 2019 USD ($)
Commitments and Contingencies Disclosure [Abstract] |  |  |  |  |  |
Standard warranty term |  |  |  |  | 5 years |
Movement in Standard Product Warranty Accrual [Roll Forward] |  |  |  |  |  |
Beginning balance |  |  |  |  | $ 16.1 | $ 11.5
Warranty and recall costs |  |  |  |  | 6.6 | 7.9
Payments and other deductions |  |  |  |  | (5.9) | (7.8)
Acquired warranty and recall liabilities |  |  |  |  | 0.0 | 0.1
Ending balance |  |  |  |  | $ 16.8 | $ 11.7
Lighting Science Group Patent Litigation |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Number of patents allegedly to have been infringed | patent |  |  | 8 | 3 |  |
Number of allegations dropped | patent |  | 1 |  | 4 |  |
Securities Class Action |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Number of statements used as basis for dismissing claims | statement | 42 |  |  |  |  |
Total number of statements challenged in the Consolidated Complaint | statement | 47 |  |  |  |  |
Number of challenged statements allowed to proceed to discovery | statement | 5 |  |  |  |  |

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- Definition The total number of new claims filed pertaining to a loss contingency during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121557415&loc=d3e14435-108349 + Details
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