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Joint Ventures (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2020 USD ($) joint_venture | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($)
Joint venture |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Ownership of joint ventures (as a percent) | 50.00% |  |
Equity investment in joint ventures | $ 59.3 | $ 52.4 |
China |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Ownership of joint ventures (as a percent) | 50.00% |  |
China | Joint venture |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Number of joint ventures | joint_venture | 2 |  |
Ownership of joint ventures (as a percent) | 50.00% |  |
Other income, net | $ 2.0 | $ 2.1 | $ 2.2

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