Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Millions	Total	Ordinary Shares	Ordinary Shares Held in Treasury and Employee Benefit Trust	Capital in Excess of Par Value of Ordinary Shares	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Non-controlling Interest
Beginning balance at Dec. 31, 2018	$ 10,388.9	$ 450.5	$ (2.4)	$ 10,197.0	$ 1,072.2	$ (1,359.7)	$ 31.3
Net Income (Loss) Attributable to Parent	(1.2)				(1.2)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	18.2						19.4
Other comprehensive loss	(82.9)					(79.8)	(3.1)
Cancellation of ordinary shares	(92.7)	(4.0)		(88.7)
Issuance of ordinary shares	0.6	0.6
Net sales of ordinary shares for employee benefit trust	2.4		2.4
Dividends	(174.7)				(174.7)
Share-based compensation (Note 16)	61.4			61.4
Other	0.8				3.5		2.7
Ending balance at Sep. 30, 2019	$ 10,123.8	447.1	0.0	10,169.7	901.6	(1,439.5)	44.9
Common Stock, Dividends, Per Share, Declared	$ 0.39
Beginning balance at Jun. 30, 2019	$ 10,380.4	446.5		10,152.4	1,084.0	(1,348.3)	45.8
Net Income (Loss) Attributable to Parent	(119.1)				(119.1)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	(115.3)						3.8
Other comprehensive loss	(95.6)					(91.2)	(4.4)
Cancellation of ordinary shares	(2.6)			(2.6)
Issuance of ordinary shares	0.6	0.6
Dividends	(58.1)				(58.1)
Share-based compensation (Note 16)	19.9			19.9
Other	(5.5)				(5.2)		0.3
Ending balance at Sep. 30, 2019	$ 10,123.8	447.1	$ 0.0	10,169.7	901.6	(1,439.5)	44.9
Common Stock, Dividends, Per Share, Declared	$ 0.13
Stockholders' Equity Attributable to Parent	$ 7,659.3
Beginning balance at Dec. 31, 2019	7,688.1	447.1		10,182.8	(1,563.1)	(1,407.5)	28.8
Net Income (Loss) Attributable to Parent	(3,248.3)				(3,248.3)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	(3,224.0)						24.3
Other comprehensive loss	(208.0)					(201.6)	(6.4)
Issuance of ordinary shares	(5.3)	2.3		(7.6)
Dividends	(59.2)				(59.2)
Share-based compensation (Note 16)	52.6			52.6
Other	(2.7)				(0.6)		(2.1)
Ending balance at Sep. 30, 2020	$ 4,233.7	449.4		10,227.8	(4,879.0)	(1,609.1)	44.6
Common Stock, Dividends, Per Share, Declared	$ 0.13
Beginning balance at Jun. 30, 2020	$ 4,175.6	449.3		10,213.6	(4,876.0)	(1,645.8)	34.5
Net Income (Loss) Attributable to Parent	(3.9)				(3.9)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	6.4						10.3
Other comprehensive loss	38.2					36.7	1.5
Issuance of ordinary shares	0.1	0.1
Share-based compensation (Note 16)	14.2			14.2
Other	(0.8)				0.9		1.7
Ending balance at Sep. 30, 2020	4,233.7	$ 449.4		$ 10,227.8	$ (4,879.0)	$ (1,609.1)	$ 44.6
Stockholders' Equity Attributable to Parent	$ 4,189.1