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Balance Sheet Details - Accounts Payable and Accrued Liabilities (Detail) - USD ($) $ in Millions | 5 Months Ended |  |
--- | --- | --- | ---
Jun. 30, 2019 | Sep. 30, 2019 | Dec. 31, 2018
Accounts Payable and Accrued Liabilities [Abstract] |  |  |
Accounts payable trade |  | $ 101.4 | $ 75.5
Accrued tax, audit, and legal fees |  | 20.3 | 11.7
Accrued rebates |  | 74.6 | 36.1
Accrued warranty |  | 7.5 | 6.8
Restructuring reserve |  | 0.7 | 0.0
Other accrued liabilities |  | 27.9 | 17.0
Total accounts payable and accrued liabilities |  | $ 232.4 | $ 147.1
Restructuring charges | $ 8.0 |  |

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