CONSOLIDATED STATEMENTS OF INCOME (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	May 31, 2014	May 31, 2013	May 31, 2012
Sales:
Sales from products	$ 1,226.3	$ 1,228.5	$ 1,384.2
Sales from services	808.7	908.8	680.8
Total sales	2,035.0	2,137.3	2,065.0
Costs and operating expenses
Cost of products	1,068.4	1,115.5	1,208.6
Cost of services	626.4	707.6	534.1
Cost of sales - restructuring and impairment			3.7
Selling, general and administrative	197.6	198.4	189.4
Total costs and operating expenses	1,892.4	2,021.5	1,935.8
Earnings from joint ventures	3.1	6.8	1.5
Operating income	145.7	122.6	130.7
Loss on extinguishment of debt		(0.3)	(0.7)
Interest expense	(42.0)	(41.6)	(37.7)
Interest income	1.6	1.5	1.2
Income before provision for income taxes	105.3	82.2	93.5
Provision for income taxes	32.1	26.7	25.5
Net income attributable to AAR and noncontrolling interest	73.2	55.5	68.0
Income attributable to noncontrolling interest	(0.3)	(0.5)	(0.3)
Net income attributable to AAR	$ 72.9	$ 55.0	$ 67.7
Earnings per share - basic (in dollars per share)	$ 1.85	$ 1.38	$ 1.68
Earnings per share - diluted (in dollars per share)	$ 1.83	$ 1.38	$ 1.65