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Goodwill and Intangible Assets (Details) - USD ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | --- | ---
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |
Goodwill | $ 198.6 | $ 198.3 | $ 198.4
Intangible assets | 229.4 | 251.3 |
Intellectual property |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |
Intangible assets | 0.0 | 0.0 |
Other intangible assets |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |
Intangible assets | 220.6 | 242.3 |
Computer software assets |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |
Intangible assets | 8.8 | 9.0 |
Cost |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |
Goodwill | 254.0 | 253.7 |
Intangible assets | 908.9 | 905.6 |
Cost | Intellectual property |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |
Intangible assets | 111.3 | 111.3 |
Cost | Other intangible assets |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |
Intangible assets | 503.2 | 503.2 |
Cost | Computer software assets |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |
Intangible assets | 294.4 | 291.1 |
Accumulated Amortization and Impairment |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |
Goodwill | (55.4) | (55.4) |
Intangible assets | (679.5) | (654.3) |
Accumulated Amortization and Impairment | Intellectual property |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |
Intangible assets | (111.3) | (111.3) |
Accumulated Amortization and Impairment | Other intangible assets |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |
Intangible assets | (282.6) | (260.9) |
Accumulated Amortization and Impairment | Computer software assets |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |
Intangible assets | $ (285.6) | $ (282.1) |

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- Definition The amount of assets representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognised. [Refer: Business combinations [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 3 -IssueDate 2020-01-01 -Paragraph B67 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2020-en-r&anchor=para_B67_d&doctype=Appendix&subtype=B -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2020-01-01 -Paragraph 134 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=36&code=ifrs-tx-2020-en-r&anchor=para_134_a&doctype=Standard -URIDate 2020-01-01 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2020-01-01 -Paragraph 135 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=36&code=ifrs-tx-2020-en-r&anchor=para_135_a&doctype=Standard -URIDate 2020-01-01 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 54 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_54_c&doctype=Standard -URIDate 2020-01-01 + Details
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