Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Aug. 31, 2015	Aug. 31, 2014
Condensed Consolidated Statements of Comprehensive Income
Net income attributable to AAR and noncontrolling interest	$ 22.9	$ 14.5
Other comprehensive income (loss), net of tax expense (benefit):
Currency translation adjustments, net of tax of $0.1 and ($0.4)	0.2	(9.0)
Unrealized gain on derivative instruments:
Unrealized gain arising during period, net of tax of $0.0 and $0.2		0.3
Pension and other post-retirement plans:
Amortization of actuarial loss and prior service cost included in net income, net of tax of $0.1 and $0.1	0.2	0.1
Other comprehensive income (loss), net of tax	0.4	(8.6)
Comprehensive income, net of tax	23.3	5.9
Comprehensive income related to noncontrolling interest		(0.1)
Comprehensive income attributable to AAR	$ 23.3	$ 5.8