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Income Taxes - Net Operating and Capital Loss Carryforwards (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Net deferred tax assets
Total net deferred tax assets	$ 72.4	$ 75.5
Tax credit carryforwards, foreign	$ 1.8
Percentage of likelihood for realization of benefit upon ultimate settlement	50.00%
Domestic Tax Authority
Net deferred tax assets
Separate return limitation year operating loss carryforwards	$ 0.6
Operating and Capital Loss Carryforward
Net deferred tax assets
Operating loss carryforwards	551.1
Gross deferred tax asset	121.5
Valuation allowance	(121.5)
Total net deferred tax assets	0.0
Operating and Capital Loss Carryforward | United States
Net deferred tax assets
Operating loss carryforwards	399.5
Gross deferred tax asset	85.4
Valuation allowance	(85.4)
Total net deferred tax assets	0.0
Operating and Capital Loss Carryforward | Luxembourg
Net deferred tax assets
Operating loss carryforwards	59.5
Gross deferred tax asset	14.8
Valuation allowance	(14.8)
Total net deferred tax assets	0.0
Operating and Capital Loss Carryforward | United Kingdom
Net deferred tax assets
Operating loss carryforwards	4.9
Gross deferred tax asset	1.2
Valuation allowance	(1.2)
Total net deferred tax assets	0.0
Operating and Capital Loss Carryforward | Israel
Net deferred tax assets
Operating loss carryforwards	87.2
Gross deferred tax asset	20.1
Valuation allowance	(20.1)
Total net deferred tax assets	0.0
2022-2026 | Operating and Capital Loss Carryforward
Net deferred tax assets
Operating loss carryforwards	0.0
2022-2026 | Operating and Capital Loss Carryforward | United States
Net deferred tax assets
Operating loss carryforwards	0.0
2022-2026 | Operating and Capital Loss Carryforward | Luxembourg
Net deferred tax assets
Operating loss carryforwards	0.0
2022-2026 | Operating and Capital Loss Carryforward | United Kingdom
Net deferred tax assets
Operating loss carryforwards	0.0
2022-2026 | Operating and Capital Loss Carryforward | Israel
Net deferred tax assets
Operating loss carryforwards	0.0
2027-2031 | Operating and Capital Loss Carryforward
Net deferred tax assets
Operating loss carryforwards	0.2
2027-2031 | Operating and Capital Loss Carryforward | United States
Net deferred tax assets
Operating loss carryforwards	0.2
2027-2031 | Operating and Capital Loss Carryforward | Luxembourg
Net deferred tax assets
Operating loss carryforwards	0.0
2027-2031 | Operating and Capital Loss Carryforward | United Kingdom
Net deferred tax assets
Operating loss carryforwards	0.0
2027-2031 | Operating and Capital Loss Carryforward | Israel
Net deferred tax assets
Operating loss carryforwards	0.0
2032-2041 | Operating and Capital Loss Carryforward
Net deferred tax assets
Operating loss carryforwards	310.3
2032-2041 | Operating and Capital Loss Carryforward | United States
Net deferred tax assets
Operating loss carryforwards	250.8
2032-2041 | Operating and Capital Loss Carryforward | Luxembourg
Net deferred tax assets
Operating loss carryforwards	59.5
2032-2041 | Operating and Capital Loss Carryforward | United Kingdom
Net deferred tax assets
Operating loss carryforwards	0.0
2032-2041 | 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	240.6
No expiration date | Operating and Capital Loss Carryforward | United States
Net deferred tax assets
Operating loss carryforwards	148.5
No expiration date | Operating and Capital Loss Carryforward | Luxembourg
Net deferred tax assets
Operating loss carryforwards	0.0
No expiration date | Operating and Capital Loss Carryforward | United Kingdom
Net deferred tax assets
Operating loss carryforwards	4.9
No expiration date | Operating and Capital Loss Carryforward | Israel
Net deferred tax assets
Operating loss carryforwards	$ 87.2

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- Definition

Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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