Income taxes (Tables)

6 Months Ended

Jun. 30, 2016

Income taxes

Schedule of components of income tax expense (benefit)

	Three Months Ended June 30,				Six Months Ended June 30,
	2016		2015		2016		2015
Current income tax expense	$	0.3	$	6.2	$	1.8	$	7.3
Deferred tax benefit		(18.7)		(3.3)		(18.6)		(9.0)
Total income tax (benefit) expense, net	$	(18.4)	$	2.9	$	(16.8)	$	(1.7)