Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Nov. 30, 2011	May 31, 2011
Current assets:
Cash and cash equivalents	$ 27,870	$ 57,433
Accounts receivable, less allowances of $5,562 and $5,719, respectively	294,012	287,435
Inventories	426,051	363,399
Rotable spares and equipment on or available for short-term lease	144,015	143,875
Deposits, prepaids and other	39,522	38,260
Deferred tax assets	23,583	23,583
Total current assets	955,053	913,985
Property, plant and equipment, net of accumulated depreciation of $256,389 and $235,098, respectively	345,128	324,377
Other assets:
Goodwill and other intangible assets, net	215,301	181,097
Equipment on long-term lease	69,690	93,387
Investment in joint ventures	44,390	48,743
Other	192,050	142,138
Total other assets	521,431	465,365
Total assets	1,821,612	1,703,727
Current liabilities:
Short-term debt	50,000	100,000
Current maturities of long-term debt	20,586	11,323
Current maturities of non-recourse long-term debt	6,545	823
Current maturities of long-term capital lease obligations	63	1,929
Accounts and trade notes payable	190,759	185,096
Accrued liabilities	106,991	116,839
Total current liabilities	374,944	416,010
Long-term debt, less current maturities	426,780	313,981
Non-recourse debt		11,032
Capital lease obligations	148	4,789
Deferred tax liabilities	102,609	98,322
Other liabilities and deferred income	53,739	24,304
Total noncurrent liabilities	583,276	452,428
Equity:
Preferred stock, $1.00 par value, authorized 250 shares; none issued
Common stock, $1.00 par value, authorized 100,000 shares; issued 44,899 and 44,986 shares, respectively	44,899	44,986
Capital surplus	418,143	423,805
Retained earnings	514,259	486,130
Treasury stock, 4,615 and 5,205 shares at cost, respectively	(91,198)	(100,431)
Accumulated other comprehensive loss	(22,155)	(18,645)
Total AAR shareholders' equity	863,948	835,845
Noncontrolling interest	(556)	(556)
Total equity	863,392	835,289
Total liabilities and equity	$ 1,821,612	$ 1,703,727