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Summary of Significant Accounting Policies - Additional Information (Detail) |  | 12 Months Ended |
--- | --- | --- | ---
Dec. 31, 2019 USD ($) ReportingUnit | Dec. 31, 2020 USD ($) ReportingUnit | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Mar. 31, 2020
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Inventories, net | $ 465,000,000 | $ 262,000,000 | $ 465,000,000 |  |
Net of inventory reserves | 26,000,000 | 39,000,000 | 26,000,000 |  |
Goodwill | $ 245,000,000 | $ 0 | 245,000,000 | $ 314,000,000 |
Number of reporting units | ReportingUnit | 5 | 4 |  |  |
Foreign currency transactions gain (loss) |  | $ 2,000,000 | $ (1,000,000) | $ (2,000,000) |
Customer Concentration Risk [Member] | Sales Revenue, Net [Member] |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Percentage of revenue |  | 10.00% |  |  |
Minimum [Member] |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Discount rates utilized for reporting unit fair value valuation |  |  |  |  | 11.50%
Maximum [Member] |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Discount rates utilized for reporting unit fair value valuation |  |  |  |  | 12.80%

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