CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Millions, unless otherwise specified	12 Months Ended
	May 31, 2013	May 31, 2012	May 31, 2011
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
Net income attributable to AAR and noncontrolling interest	$ 55.5	$ 68.0	$ 69.8
Other comprehensive income, net of tax:
Currency translation adjustments, net of tax	8.7	(18.5)	3.3
Derivative instruments unrealized gain (loss), net of tax expense (benefit) of $0.3 in 2013, ($2.1) in 2012, and $0 in 2011	0.6	(3.9)
Unrecognized pension and post retirement costs, net of tax expense (benefit) of $1.8 in 2013, ($7.6) in 2012, and $4.1 in 2011	3.4	(14.2)	7.7
Total other comprehensive income, net of tax	12.7	(36.6)	11.0
Comprehensive income	68.2	31.4	80.8
Less: Comprehensive income attributable to noncontrolling interests	(0.5)	(0.3)
Comprehensive income attributable to AAR	$ 67.7	$ 31.1	$ 80.8