v3.10.0.1

Income Taxes (Details 1) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Taxes [Line Items]
Current	$ (1,135.2)	$ (192.3)	$ (21.4)
Deferred	(438.1)	(46.6)	1,428.4
Total income tax benefit (expense)	(1,573.3)	(238.9)	1,407.0
U.S.
Income Taxes [Line Items]
Current	(957.5)	47.2	146.8
Deferred	7.6	(32.8)	90.2
Total	(949.9)	14.4	237.0
The Netherlands
Income Taxes [Line Items]
Current	14.2	(16.2)	(0.3)
Deferred	(519.4)	(118.2)	1,259.6
Total	(505.2)	(134.4)	1,259.3
Belgium
Income Taxes [Line Items]
Current	(153.9)	(203.6)	(105.0)
Deferred	41.6	145.4	57.0
Total	(112.3)	(58.2)	(48.0)
U.K.
Income Taxes [Line Items]
Current	(7.2)	(3.3)	(12.3)
Deferred	32.2	(64.7)	1.2
Total		(68.0)
Total	25.0		(11.1)
Switzerland
Income Taxes [Line Items]
Current	(16.6)	(2.0)	(48.4)
Deferred	6.2	15.6	5.3
Total	(10.4)	13.6	(43.1)
Other
Income Taxes [Line Items]
Current	(14.2)	(14.4)	(2.2)
Deferred	(6.3)	8.1	15.1
Total	$ (20.5)	$ (6.3)	$ 12.9

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