Equity (Tables)

6 Months Ended

Jun. 30, 2017

Equity

Schedule of reconciliation of equity

	Six months ended June 30, 2017
	Total Atlantic		Preferred shares
	Power Corporation		issued by a subsidiary
	Shareholders’ Equity		company		Total Equity
Balance at January 1, 2017	$	64.6	$	221.3	$	285.9
Net (loss) income		(24.6)		4.3		(20.3)
Realized and unrealized gain on hedging activities, net of tax		0.1		—		0.1
Foreign currency translation adjustment		6.7		—		6.7
Defined benefit plan, net of tax		0.1		—		0.1
Stock-based compensation		1.1		—		1.1
Dividends declared on preferred shares of a subsidiary company		—		(4.3)		(4.3)
Balance at June 30, 2017	$	48.0	$	221.3	$	269.3

	Six months ended June 30, 2016
	Total Atlantic		Preferred shares
	Power Corporation		issued by a subsidiary
	Shareholders’ Equity		company		Total Equity
Balance at January 1, 2016	$	213.9	$	221.3	$	435.2
Net (loss) income		(33.5)		4.2		(29.3)
Realized and unrealized loss on hedging activities, net of tax		(0.3)		—		(0.3)
Foreign currency translation adjustment		19.4		—		19.4
Common share repurchases		(4.7)		—		(4.7)
Stock-based compensation		0.8		—		0.8
Dividends declared on preferred shares of a subsidiary company		—		(4.2)		(4.2)
Balance at June 30, 2016	$	195.6	$	221.3	$	416.9