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