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Royalties Paid - Summary of Royalties Paid (Detail) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Disclosure of Royalty Payment [abstract] |  |  |
Amount owing at beginning of the year | $ (13.9) | $ (12.5) | $ (16.3)
Royalties | (105.0) | (73.7) | (62.5)
Amount owing at end of the year | 17.7 | 13.9 | 12.5
Translation | (1.3) | 0.0 | 0.8
Total royalties paid | $ (102.5) | $ (72.3) | $ (65.5)

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- Definition Increase decrease through net exchange differences in royalties. + References No definition available. + Details
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- Definition Royalties payable. + References No definition available. + Details
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