Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Statement of Comprehensive Income [Abstract]
Consolidated net loss	$ (25.1)	$ (7.6)	$ (38.3)	$ (104.5)
Other comprehensive income
Foreign currency translation	(15.7)	(72.0)	(54.1)	(86.5)
Postretirement adjustments, net of tax of $4.0 and $18.6 in 2016 and $9.8 and $15.7 in 2015	54.0	82.5	200.9	181.3
Total other comprehensive income	38.3	10.5	146.8	94.8
Comprehensive income (loss)	13.2	2.9	108.5	(9.7)
Less comprehensive income attributable to noncontrolling interests	(2.4)	(3.3)	(6.7)	(11.3)
Comprehensive income (loss) attributable to Unisys Corporation	$ 10.8	$ (0.4)	$ 101.8	$ (21.0)