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Share Capital (Earnings (loss) per share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Disclosure of share capital, reserves and other equity interest [Abstract]
Net (loss) earnings	$ (72.6)	$ 26.6
Weighted average number of common shares outstanding (in shares)	389,816	305,521
Basic loss per share (usd per share)	$ (0.19)	$ 0.09
Dilutive effect of potential common share equivalents (in shares)	0	3,500
Diluted weighted average number of common shares outstanding (in shares)	389,816	309,021
Diluted loss per share (usd per share)	$ (0.19)	$ 0.09

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Disclosure of share capital, reserves and other equity interest [Abstract]

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The weighted average number of ordinary shares outstanding plus the weighted average number of ordinary shares that would be issued on the conversion of all the dilutive potential ordinary shares into ordinary shares. [Refer: Ordinary shares [member]; Weighted average [member]]

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The amount of profit (loss) attributable to ordinary equity holders of the parent entity (the numerator) divided by the weighted average number of ordinary shares outstanding during the period (the denominator).

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The total of income less expenses from continuing and discontinued operations, excluding the components of other comprehensive income. [Refer: Other comprehensive income]

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