CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	12 Months Ended
	May. 31, 2015	May. 31, 2014	May. 31, 2013
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
Net income attributable to AAR and noncontrolling interest	$ 10.4	$ 73.2	$ 55.5
Other comprehensive income, net of tax:
Currency translation adjustments, net of tax	(7.8)	14.0	8.7
Derivative instruments, net of tax expense of $1.4 in 2015, $0.4 in 2014, and $0.3 in 2013	2.6	0.7	0.6
Unrecognized pension and post retirement costs, net of tax expense (benefit) of ($3.2) in 2015, ($0.8) in 2014, and $1.8 in 2013	(5.9)	(1.5)	3.4
Total other comprehensive income (loss), net of tax	(11.1)	13.2	12.7
Comprehensive income (loss)	(0.7)	86.4	68.2
Less: Comprehensive income attributable to noncontrolling interests	(0.2)	(0.3)	(0.5)
Comprehensive income (loss) attributable to AAR	$ (0.9)	$ 86.1	$ 67.7