Condensed Consolidated Statements of Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Nov. 30, 2015	Nov. 30, 2014	Nov. 30, 2015	Nov. 30, 2014
Sales:
Sales from products	$ 237.1	$ 221.7	$ 441.1	$ 443.0
Sales from services	186.7	181.6	360.5	355.4
Total sales	423.8	403.3	801.6	798.4
Costs and operating expenses:
Cost of products	201.0	189.8	370.8	384.1
Cost of services	162.9	146.3	316.4	284.7
Selling, general and administrative	42.5	40.1	81.9	78.6
Total costs and operating expenses	406.4	376.2	769.1	747.4
Earnings (Loss) from joint ventures	(0.1)	0.6	(0.4)	1.2
Operating income	17.3	27.7	32.1	52.2
Loss on extinguishment of debt	(0.1)		(0.4)
Interest expense	(1.5)	(6.6)	(3.5)	(13.0)
Interest income		0.1	0.1	0.2
Income from continuing operations before provision for income taxes	15.7	21.2	28.3	39.4
Provision for income taxes	5.3	7.3	9.7	13.7
Income from continuing operations attributable to AAR	10.4	13.9	18.6	25.7
Discontinued operations:
Operating income (loss)	(3.6)	1.3	(8.5)	4.6
Gain from contingent consideration			27.7
Provision for income taxes (benefit)	(1.2)		6.9	0.6
Income (Loss) from discontinued operations	(2.4)	1.3	12.3	4.0
Income attributable to noncontrolling interest from discontinued operations				0.1
Income (Loss) from discontinued operations attributable to AAR	(2.4)	1.3	12.3	3.9
Net income attributable to AAR	$ 8.0	$ 15.2	$ 30.9	$ 29.6
Earnings (Loss) per share - basic:
Earnings from continuing operations	$ 0.30	$ 0.35	$ 0.53	$ 0.65
Earnings (Loss) from discontinued operations	(0.07)	0.03	0.36	0.10
Earnings per share - basic	0.23	0.38	0.89	0.75
Earnings (Loss) per share - diluted:
Earnings from continuing operations	0.30	0.35	0.53	0.65
Earnings (Loss) from discontinued operations	(0.07)	0.03	0.36	0.10
Earnings per share - diluted	$ 0.23	$ 0.38	$ 0.89	$ 0.75