Consolidated Statements of Comprehensive (Loss) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Comprehensive (loss) income
Net (loss) income	$ (16.7)	$ (136.3)	$ 51.8
Other comprehensive (loss) income
Change in foreign currency translation, net of tax	(61.9)	71.7	(67.3)
Net change in other, net of tax			1.2
Total other comprehensive (loss) income	(61.9)	71.7	(66.1)
Comprehensive (loss)	(78.6)	(64.6)	(14.3)
Net (income) attributable to non-controlling interests	(1.4)	(13.7)	(19.3)
Comprehensive (loss) attributable to Sirius Group	$ (80.0)	$ (78.3)	$ (33.6)