v3.10.0.1

Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Examination [Line Items]
Earnings (loss) from continuing operations before income taxes	$ 161.8	$ (2,111.1)	$ 243.3
Intercompany activity with discontinued operations	(426.4)	(499.9)	(480.3)
Domestic Tax Authority [Member] | U.K.
Income Tax Examination [Line Items]
Earnings (loss) from continuing operations before income taxes	330.9	(991.3)	1,165.4
Foreign Tax Authority [Member] | Belgium
Income Tax Examination [Line Items]
Earnings (loss) from continuing operations before income taxes	392.4	140.0	13.7
Foreign Tax Authority [Member] | The Netherlands
Income Tax Examination [Line Items]
Earnings (loss) from continuing operations before income taxes	(321.1)	(26.1)	169.6
Foreign Tax Authority [Member] | Switzerland
Income Tax Examination [Line Items]
Earnings (loss) from continuing operations before income taxes	318.8	111.6	273.9
Foreign Tax Authority [Member] | U.S.
Income Tax Examination [Line Items]
Earnings (loss) from continuing operations before income taxes	(51.6)	(842.5)	(873.0)
Foreign Tax Authority [Member] | Other
Income Tax Examination [Line Items]
Earnings (loss) from continuing operations before income taxes	$ (81.2)	$ (2.9)	$ (26.0)

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