Income Taxes (Income from Continuing Operations before Taxes) (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Abstract]
United States	$ (23.8)	$ 19.3	$ (89.6)
Foreign	(293.5)	(178.1)	(214.0)
Loss from continuing operations, before taxes	$ (317.3)	$ (158.8)	$ (303.6)

Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

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