Consolidated Condensed Balance Sheets (Unaudited) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 86,888	$ 61,562
Receivables, net of allowance of $17,322 and $16,955, respectively	827,274	777,370
Inventories	65,490	64,298
Prepaid expenses and other current assets	157,818	159,263
Total current assets	1,137,470	1,062,493
Revenue earning equipment, net of accumulated depreciation of $3,606,141 and $3,596,102, respectively	6,930,465	6,490,837
Operating property and equipment, net of accumulated depreciation of $1,015,764 and $991,117, respectively	687,714	633,826
Goodwill	383,879	383,719
Intangible assets	69,224	72,406
Direct financing leases and other assets	478,915	460,501
Total assets	9,687,667	9,103,782
Current liabilities:
Short-term debt and current portion of long-term debt	557,681	259,438
Accounts payable	479,952	475,364
Accrued expenses and other current liabilities	479,047	496,337
Total current liabilities	1,516,680	1,231,139
Long-term debt	4,159,472	3,929,987
Other non-current liabilities	566,242	616,305
Deferred income taxes	1,480,313	1,429,637
Total liabilities	7,722,707	7,207,068
Shareholders' equity:
Preferred stock of no par value per share — authorized, 3,800,917; none outstanding, June 30, 2014 or December 31, 2013	0	0
Common stock of $0.50 par value per share — authorized, 400,000,000; outstanding, June 30, 2014 — 53,067,722; December 31, 2013 — 53,335,386	26,533	26,667
Additional paid-in capital	944,064	917,539
Retained earnings	1,416,858	1,390,756
Accumulated other comprehensive loss	(422,495)	(438,248)
Total shareholders' equity	1,964,960	1,896,714
Total liabilities and shareholders' equity	$ 9,687,667	$ 9,103,782