Income Taxes - Net Operating and Capital Loss Carryforwards (Details) $ in Millions	Dec. 31, 2023 USD ($)
Net deferred tax assets
No expiration date	$ 94.2
Total	677.2
Gross deferred tax asset	155.8
Valuation allowance	(155.8)
Total net deferred tax assets	0.0
2024-2028
Net deferred tax assets
2024-2043	0.0
2029-2033
Net deferred tax assets
2024-2043	90.8
2034-2043
Net deferred tax assets
2024-2043	492.2
United States
Net deferred tax assets
No expiration date	1.9
Total	396.8
Gross deferred tax asset	87.6
Valuation allowance	(87.6)
Total net deferred tax assets	0.0
United States | 2024-2028
Net deferred tax assets
2024-2043	0.0
United States | 2029-2033
Net deferred tax assets
2024-2043	90.8
United States | 2034-2043
Net deferred tax assets
2024-2043	304.1
Luxembourg
Net deferred tax assets
No expiration date	0.0
Total	188.1
Gross deferred tax asset	46.9
Valuation allowance	(46.9)
Total net deferred tax assets	0.0
Luxembourg | 2024-2028
Net deferred tax assets
2024-2043	0.0
Luxembourg | 2029-2033
Net deferred tax assets
2024-2043	0.0
Luxembourg | 2034-2043
Net deferred tax assets
2024-2043	188.1
United Kingdom
Net deferred tax assets
No expiration date	3.2
Total	3.2
Gross deferred tax asset	0.8
Valuation allowance	(0.8)
Total net deferred tax assets	0.0
United Kingdom | 2024-2028
Net deferred tax assets
2024-2043	0.0
United Kingdom | 2029-2033
Net deferred tax assets
2024-2043	0.0
United Kingdom | 2034-2043
Net deferred tax assets
2024-2043	0.0
Israel
Net deferred tax assets
No expiration date	89.1
Total	89.1
Gross deferred tax asset	20.5
Valuation allowance	(20.5)
Total net deferred tax assets	0.0
Israel | 2024-2028
Net deferred tax assets
2024-2043	0.0
Israel | 2029-2033
Net deferred tax assets
2024-2043	0.0
Israel | 2034-2043
Net deferred tax assets
2024-2043	$ 0.0