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Affiliated Companies (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019 | Dec. 31, 2019 | Nov. 01, 2019 | Dec. 31, 2018
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |
Carrying amount, equity-method investments | $ 186.2 |  | $ 186.2 |  | $ 179.3 |  |
Carrying amount, investments not accounted for under the equity method | 13.4 |  | 13.4 |  | 13.4 |  |
Purchase of investment in affiliated companies in cash |  |  | 85.1 |  |  |  |
Purchase of investment in affiliated companies |  |  | 4.9 |  |  |  |
Purchases and royalty payments made to affiliates | 27.9 | $ 27.6 | 60.4 | $ 52.2 |  |  |
Amount due and payable to affiliates | 18.1 |  | 18.1 |  | 20.8 |  |
Sales to affiliates | 2.8 | $ 2.5 | 5.0 | $ 4.7 |  |  |
Amount receivable from affiliates | $ 1.8 |  | $ 1.8 |  | $ 1.9 |  |
Daikyo Seiko, Ltd. (Daikyo) |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |
Ownership interest percentage |  |  |  |  |  | 49.00% | 25.00%

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