Income Taxes - Earnings (Loss) before Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Taxes [Line Items]
Earnings (loss) before income taxes	$ (280.6)	$ (584.7)	$ (651.2)
Domestic
Income Taxes [Line Items]
Earnings (loss) before income taxes	(46.0)	(32.5)	0.0
Foreign
Income Taxes [Line Items]
Earnings (loss) before income taxes	$ (234.6)	$ (552.2)	$ (651.2)

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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