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Income Taxes - Net Operating and Capital Loss Carryforwards (Details) - USD ($) $ in Millions | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Net deferred tax assets |  |
Total net deferred tax assets | $ 95.0 | $ 70.4
Tax credit carryforwards, foreign | 4.7 |
Operating and Capital Loss Carryforward |  |
Net deferred tax assets |  |
Operating loss carryforwards | 661.8 |
Gross deferred tax asset | 144.7 |
Valuation allowance | (129.3) |
Total net deferred tax assets | 15.4 |
Operating and Capital Loss Carryforward | United States |  |
Net deferred tax assets |  |
Operating loss carryforwards | 464.5 |
Gross deferred tax asset | 97.6 |
Valuation allowance | (83.2) |
Total net deferred tax assets | 14.4 |
Operating and Capital Loss Carryforward | Luxembourg |  |
Net deferred tax assets |  |
Operating loss carryforwards | 97.1 |
Gross deferred tax asset | 24.3 |
Valuation allowance | (24.3) |
Total net deferred tax assets | 0.0 |
Operating and Capital Loss Carryforward | United Kingdom |  |
Net deferred tax assets |  |
Operating loss carryforwards | 6.9 |
Gross deferred tax asset | 1.4 |
Valuation allowance | (0.4) |
Total net deferred tax assets | 1.0 |
Operating and Capital Loss Carryforward | Israel |  |
Net deferred tax assets |  |
Operating loss carryforwards | 93.3 |
Gross deferred tax asset | 21.4 |
Valuation allowance | (21.4) |
Total net deferred tax assets | 0.0 |
2021-2025 | Operating and Capital Loss Carryforward |  |
Net deferred tax assets |  |
Operating loss carryforwards | 0.0 |
2021-2025 | Operating and Capital Loss Carryforward | United States |  |
Net deferred tax assets |  |
Operating loss carryforwards | 0.0 |
2021-2025 | Operating and Capital Loss Carryforward | Luxembourg |  |
Net deferred tax assets |  |
Operating loss carryforwards | 0.0 |
2021-2025 | Operating and Capital Loss Carryforward | United Kingdom |  |
Net deferred tax assets |  |
Operating loss carryforwards | 0.0 |
2021-2025 | Operating and Capital Loss Carryforward | Israel |  |
Net deferred tax assets |  |
Operating loss carryforwards | 0.0 |
2026-2030 | Operating and Capital Loss Carryforward |  |
Net deferred tax assets |  |
Operating loss carryforwards | 0.0 |
2026-2030 | Operating and Capital Loss Carryforward | United States |  |
Net deferred tax assets |  |
Operating loss carryforwards | 0.0 |
2026-2030 | Operating and Capital Loss Carryforward | Luxembourg |  |
Net deferred tax assets |  |
Operating loss carryforwards | 0.0 |
2026-2030 | Operating and Capital Loss Carryforward | United Kingdom |  |
Net deferred tax assets |  |
Operating loss carryforwards | 0.0 |
2026-2030 | Operating and Capital Loss Carryforward | Israel |  |
Net deferred tax assets |  |
Operating loss carryforwards | 0.0 |
2031-2040 | Operating and Capital Loss Carryforward |  |
Net deferred tax assets |  |
Operating loss carryforwards | 319.0 |
2031-2040 | Operating and Capital Loss Carryforward | United States |  |
Net deferred tax assets |  |
Operating loss carryforwards | 250.7 |
2031-2040 | Operating and Capital Loss Carryforward | Luxembourg |  |
Net deferred tax assets |  |
Operating loss carryforwards | 68.3 |
2031-2040 | Operating and Capital Loss Carryforward | United Kingdom |  |
Net deferred tax assets |  |
Operating loss carryforwards | 0.0 |
2031-2040 | Operating and Capital Loss Carryforward | Israel |  |
Net deferred tax assets |  |
Operating loss carryforwards | 0.0 |
No expiration date | Operating and Capital Loss Carryforward |  |
Net deferred tax assets |  |
Operating loss carryforwards | 342.8 |
No expiration date | Operating and Capital Loss Carryforward | United States |  |
Net deferred tax assets |  |
Operating loss carryforwards | 213.8 |
No expiration date | Operating and Capital Loss Carryforward | Luxembourg |  |
Net deferred tax assets |  |
Operating loss carryforwards | 28.8 |
No expiration date | Operating and Capital Loss Carryforward | United Kingdom |  |
Net deferred tax assets |  |
Operating loss carryforwards | 6.9 |
No expiration date | Operating and Capital Loss Carryforward | Israel |  |
Net deferred tax assets |  |
Operating loss carryforwards | $ 93.3 |

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- Definition Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32537-109319 + Details
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