Condensed Consolidated Balance Sheets (USD $) In Millions, unless otherwise specified	Aug. 31, 2012	May 31, 2012
Current assets:
Cash	$ 67.7	$ 67.7
Accounts receivable, less allowances of $6.9 and $8.2, respectively	282.8	302.1
Inventories	466.0	461.2
Rotable spares and equipment on or available for short-term lease	140.1	138.6
Deposits, prepaids and other	55.0	71.1
Deferred tax assets	22.0	22.6
Total current assets	1,033.6	1,063.3
Property, plant and equipment, net of accumulated depreciation of $308.4 and $298.4, respectively	374.3	382.9
Other assets:
Goodwill	253.8	262.6
Intangible assets, net	164.7	155.0
Equipment on long-term lease	69.7	73.1
Investment in joint ventures	49.4	49.9
Other	224.8	208.9
Total other assets	762.4	749.5
Total assets	2,170.3	2,195.7
Current liabilities:
Short-term debt	0.6	0.6
Current maturities of long-term debt	107.6	122.2
Accounts and trade notes payable	176.5	201.4
Accrued liabilities	131.9	149.0
Total current liabilities	416.6	473.2
Long-term debt, less current maturities	679.4	669.4
Deferred tax liabilities	122.6	115.9
Other liabilities and deferred income	69.6	71.2
Total noncurrent liabilities	871.6	856.5
Equity:
Preferred stock, $1.00 par value, authorized 250,000 shares; none issued
Common stock, $1.00 par value, authorized 100,000 shares; issued 44,840,546 and 44,849,196 shares at cost, respectively	44.8	44.8
Capital surplus	423.4	423.6
Retained earnings	557.0	541.8
Treasury stock, 4,887,819 and 4,576,368 shares at cost, respectively	(93.3)	(90.4)
Accumulated other comprehensive loss	(51.3)	(55.2)
Total AAR shareholders' equity	880.6	864.6
Noncontrolling interest	1.5	1.4
Total equity	882.1	866.0
Total liabilities and equity	$ 2,170.3	$ 2,195.7