Earnings per Ordinary Share (Basic and Diluted Earnings Per Ordinary Share) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Earnings Per Share [Abstract]
Net (loss) earnings	$ (25.0)	$ 87.1
Net earnings (loss)	$ (25.0)	$ 87.1
Weighted average ordinary shares outstanding	515.0	514.4
Weighted average number diluted shares outstanding adjustment, stock-based awards and warrants	0.0	2.4
Total dilutive shares outstanding	515.0	516.8
Basic (loss) earnings per ordinary share	$ (0.05)	$ 0.17
Diluted earnings (loss) per ordinary share	$ (0.05)	$ 0.17