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Basis of Preparation and Significant Accounting Policies - Recently Adopted Accounting Standards (Details) - USD ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019 | Jan. 01, 2019 | Dec. 31, 2018
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Disclosure of initial application of standards or interpretations [line items] |  |  |  |
Right-of-use assets | $ 101.0 | $ 104.1 | $ 111.5 |
Lease liabilities |  |  | 122.4 |
Current accrued expenses and other current liabilities | $ (553.1) | $ (370.9) |  |
Finance lease obligation |  |  |  | $ 107.4
Discounted using our incremental borrowing rate at January 1, 2019 |  |  | (13.2) |
Recognition exemption for short-term and low-value leases |  |  | (1.9) |
Extension options reasonably certain to be exercised |  |  | 19.7 |
Lease obligations recognized at January 1, 2019 under IFRS 16 |  |  | 112.0 |
Lease obligations previously classified as finance leases under IAS 17 |  |  | 10.4 |
IFRS 16 |  |  |  |
Disclosure of initial application of standards or interpretations [line items] |  |  |  |
Right-of-use assets |  |  | 111.5 |
Lease liabilities |  |  | 112.0 |
Current accrued expenses and other current liabilities |  |  | $ 0.5 |
Weighted average incremental borrowing rate used to determine lease obligation (percentage) |  |  | 4.70% |

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- Definition Amount Of Undiscounted Excess Using Weighted Average Lessee's Incremental Borrowing Rate Applied To Lease Liabilities Recognised At Date Of Initial Application Of IFRS 16 + References No definition available. + Details
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- Definition Lease Liability Under IAS 17 + References No definition available. + Details
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- Definition Lease Liability Under IFRS 16 + References No definition available. + Details
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- Definition Operating Lease Liability + References No definition available. + Details
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- Definition Operating Lease Liability, Increase Resulting From Extension Options Reasonably Certain To Be Exercised + References No definition available. + Details
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- Definition Recognition Exemption Relating To Short-Term And Low-Value Leases For Which Recognition Exemption Has Been Used + References No definition available. + Details
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- Definition The amount of current accrued expenses and other current liabilities. [Refer: Accruals; Other current liabilities] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_55&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The amount of liabilities related to the entity's leases. Lease is a contract, or part of a contract, that conveys the right to use an underlying asset for a period of time in exchange for consideration. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2020-01-01 -Paragraph 47 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2020-en-r&anchor=para_47_b&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The amount of assets that represent a lessee's right to use an underlying asset for the lease term. Underlying asset is an asset that is the subject of a lease, for which the right to use that asset has been provided by a lessor to a lessee. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2020-01-01 -Paragraph 53 -Subparagraph j -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2020-en-r&anchor=para_53_j&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The weighted average lessee's incremental borrowing rate applied to lease liabilities recognised in the statement of financial position at the date of initial application of IFRS 16. The incremental borrowing rate is the rate of interest that a lessee would have to pay to borrow over a similar term, and with a similar security, the funds necessary to obtain an asset of a similar value to the right-of-use asset in a similar economic environment. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2020-01-01 -Paragraph C12 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2020-en-r&anchor=para_C12_a&doctype=Appendix&subtype=C -URIDate 2020-01-01 + Details
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- Details
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