Condensed Consolidated Statements of Income (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Aug. 31, 2014	Aug. 31, 2013
Sales:
Sales from products	$ 294.7	$ 305.5
Sales from services	174.5	209.0
Total sales	469.2	514.5
Cost and operating expenses:
Cost of products	255.1	269.0
Cost of services	138.8	160.8
Selling, general and administrative	44.9	47.7
Total costs and operating expenses	438.8	477.5
Earnings from joint ventures	0.6	1.2
Operating income	31.0	38.2
Interest expense	(9.6)	(11.0)
Interest income	0.1	0.3
Income before provision for income taxes	21.5	27.5
Provision for income taxes	7.0	9.5
Net income attributable to AAR and noncontrolling interest	14.5	18.0
Income attributable to noncontrolling interest	(0.1)	(0.1)
Net income attributable to AAR	$ 14.4	$ 17.9
Earnings per share - basic (in dollars per share)	$ 0.36	$ 0.45
Earnings per share - diluted (in dollars per share)	$ 0.36	$ 0.45