Condensed Consolidated Statements of Income (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Nov. 30, 2013	Nov. 30, 2012	Nov. 30, 2013	Nov. 30, 2012
Sales:
Sales from products	$ 328.9	$ 291.8	$ 634.4	$ 619.3
Sales from services	211.8	221.0	420.8	444.0
Total sales	540.7	512.8	1,055.2	1,063.3
Cost and operating expenses:
Cost of products	286.0	255.4	555.0	539.5
Cost of services	163.7	170.0	324.5	346.1
Selling, general and administrative	51.1	50.8	98.8	104.1
Total costs and operating expenses	500.8	476.2	978.3	989.7
Earnings from joint ventures	0.8	1.2	2.0	2.6
Operating income	40.7	37.8	78.9	76.2
Loss on extinguishment of debt		(0.1)		(0.3)
Interest expense	(10.5)	(10.8)	(21.5)	(21.4)
Interest income	0.3	0.3	0.6	0.7
Income before provision for income taxes	30.5	27.2	58.0	55.2
Provision for income taxes	10.5	9.3	20.0	19.0
Net income attributable to AAR and noncontrolling interest	20.0	17.9	38.0	36.2
Income attributable to noncontrolling interest		(0.1)	(0.1)	(0.2)
Net income attributable to AAR	$ 20.0	$ 17.8	$ 37.9	$ 36.0
Earnings per share - basic (in dollars per share)	$ 0.51	$ 0.45	$ 0.96	$ 0.90
Earnings per share - diluted (in dollars per share)	$ 0.50	$ 0.44	$ 0.95	$ 0.89