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Earnings (loss) per share - Earnings per share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Earnings Per Share Reconciliation
Net income attributable to the Company	$ 23.7	$ 25.9	$ 31.9	$ 48.9
Per share data
Basic earnings per share (usd per share)	$ 0.56	$ 0.62	$ 0.76	$ 1.16
Weighted average number of shares outstanding - Basic (shares)	42,102	42,102	42,102	42,102
Diluted earnings per share (usd per share)	$ 0.56	$ 0.62	$ 0.76	$ 1.16
Weighted average number of shares outstanding - Diluted (shares)	42,126	42,102	42,126	42,102

X

- Definition

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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