Consolidated Condensed Balance Sheets (Unaudited) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 74,936	$ 66,392
Receivables, net	798,066	775,765
Inventories	64,035	64,146
Prepaid expenses and other current assets	162,454	133,934
Total current assets	1,099,491	1,040,237
Revenue earning equipment, net of accumulated depreciation of $3,533,169 and $3,514,910, respectively	6,172,778	5,754,608
Operating property and equipment, net of accumulated depreciation of $992,002 and $966,220, respectively	626,229	624,853
Goodwill	384,010	384,216
Intangible assets	74,335	80,475
Direct financing leases and other assets	450,959	434,590
Total assets	8,807,802	8,318,979
Current liabilities:
Short-term debt and current portion of long-term debt	350,954	367,975
Accounts payable	442,076	398,983
Accrued expenses and other current liabilities	481,237	505,707
Total current liabilities	1,274,267	1,272,665
Long-term debt	3,686,038	3,452,821
Other non-current liabilities	931,544	948,932
Deferred income taxes	1,260,497	1,177,074
Total liabilities	7,152,346	6,851,492
Shareholders' equity:
Preferred stock of no par value per share - authorized, 3,800,917; none outstanding,September 30, 2013 or December 31,2012	0	0
Common stock of $0.50 par value per share - authorized, 400,000,000; outstanding, September 30, 2013 - 52,593,266; December 31, 2012 - 51,371,696	26,297	25,686
Additional paid-in capital	878,540	808,230
Retained earnings	1,344,175	1,221,190
Accumulated other comprehensive loss	(593,556)	(587,619)
Total shareholders' equity	1,655,456	1,467,487
Total liabilities and shareholders' equity	$ 8,807,802	$ 8,318,979