Earnings per Ordinary Share (Basic and Diluted Earnings Per Ordinary Share) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Earnings Per Share [Abstract]
Net earnings	$ 176.7	$ 88.3	$ 301.3	$ 451.7
Weighted average ordinary shares outstanding	514.5	535.2	514.4	534.9
Weighted average number diluted shares outstanding adjustment, stock-based awards and warrants	2.0	1.8	2.1	2.1
Total dilutive shares outstanding	516.5	537.0	516.5	537.0
Basic earnings per ordinary share	$ 0.34	$ 0.17	$ 0.59	$ 0.84
Diluted earnings (loss) per ordinary share	$ 0.34	$ 0.16	$ 0.58	$ 0.84