Income Taxes - Deferred Income Tax Assets And Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Deferred tax assets:
Inventories	$ 17.4	$ 15.1
Pension benefits	11.5	8.9
Other accruals and prepayments	54.6	45.0
Lease liabilities	34.2	45.1
Stock-based compensation expense	6.8	6.0
Interest expense	8.7	0.0
Unrealized gains and losses	0.0	30.9
Tax credit and loss carryforwards	117.3	159.5
Valuation allowances	(90.0)	(126.0)
Total deferred tax asset	160.5	184.5
Deferred tax liabilities:
Property, plant and equipment	(9.6)	(15.0)
Interest expense	0.0	(2.3)
Unrealized gains and losses	(6.5)	0.0
Right-of-use assets	(30.3)	(40.3)
Goodwill and other intangible assets	(188.8)	(239.8)
Total deferred tax liability	(235.2)	(297.4)
Net deferred tax liability	$ (74.7)	$ (112.9)