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)	20.9				20.9
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	19.8						(1.1)
Other comprehensive income	37.4					36.7	0.7
Cancellation of ordinary shares	(50.1)	(2.2)		(47.9)
Net sales of ordinary shares for employee benefit trust	2.4		2.4
Cash dividends declared ($0.13 per share)	(58.5)				(58.5)
Share-based compensation (Note 16)	20.4			20.4
Other	11.5				11.5
Ending balance at Mar. 31, 2019	10,373.6	448.3	$ 0.0	10,169.5	1,047.9	(1,323.0)	30.9
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)	(3,256.1)				(3,256.1)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	(3,245.7)						10.4
Other comprehensive income	(305.3)					(294.2)	(11.1)
Issuance of ordinary shares	(6.4)	(1.2)		(7.6)
Cash dividends declared ($0.13 per share)	(59.2)				(59.2)
Share-based compensation (Note 16)	21.6			21.6
Other	(0.5)				(0.8)		0.3
Ending balance at Mar. 31, 2020	$ 4,084.8	$ 448.3		$ 10,196.8	$ (4,887.0)	$ (1,701.7)	$ 28.4