CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Cash flows from operating activities:
Net income (loss)	$ 17,963	$ (56,333)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation of revenue earning equipment	571,751	492,053
Depreciation of property and equipment	51,324	44,049
Amortization of other intangible assets	30,499	19,166
Amortization and write-off of deferred financing costs	11,925	17,135
Amortization and write-off of debt discount	5,352	7,742
Stock-based compensation charges	7,984	7,515
Gain on derivatives	(1,456)	(2,956)
Loss on revaluation of foreign denominated debt	0	2,498
Provision for losses on doubtful accounts	12,657	6,917
Deferred taxes on income	35,992	2,370
Gain on sale of property and equipment	(1,017)	(197)
Changes in assets and liabilities, net of effects of acquisition:
Receivables	(33,211)	(57,554)
Inventories, prepaid expenses and other assets	(42,109)	(5,471)
Accounts payable	38,289	53,589
Accrued liabilities	22,760	(38,712)
Accrued taxes	24,660	5,334
Public liability and property damage	(9,809)	(5,144)
Net cash provided by operating activities	743,554	492,001
Cash flows from investing activities:
Net change in restricted cash and cash equivalents	142,642	97,639
Revenue earning equipment expenditures	(3,252,980)	(2,648,695)
Proceeds from disposal of revenue earning equipment	2,237,878	2,009,336
Property and equipment expenditures	(80,060)	(74,222)
Proceeds from disposal of property and equipment	23,456	47,631
Acquisitions, net of cash acquired	(2,784)	(147,314)
Other investing activities	(469)	(140)
Net cash used in investing activities	(932,317)	(715,765)
Cash flows from financing activities:
Proceeds from issuance of long-term debt	1,201,582	264,599
Payment of long-term debt	(298,631)	(453,279)
Short-term borrowings:
Proceeds	128,785	40,650
Payments	(195,326)	(243,276)
Proceeds (payments) under the revolving lines of credit, net	(31,986)	325,247
Purchase of noncontrolling interest	0	(38,000)
Proceeds from employee stock purchase plan	1,202	985
Proceeds from exercise of stock options	4,215	4,514
Proceeds from disgorgement of stockholder short-swing profits	0	4
Purchase of treasury shares	(467,248)	0
Net settlement on vesting of restricted stock	(10,342)	(18,494)
Payment of financing costs	(15,402)	(4,217)
Net cash provided by (used in) financing activities	316,849	(121,267)
Effect of foreign exchange rate changes on cash and cash equivalents	(7,558)	7,953
Net decrease in cash and cash equivalents during the period	120,528	(337,078)
Cash and cash equivalents at beginning of period	533,255	931,779
Cash and cash equivalents at end of period	653,783	594,701
Cash paid during the period for:
Interest (net of amounts capitalized)	119,097	126,945
Income taxes	5,703	22,433
Supplemental discolusres of non-cash flow information:
Purchases of revenue earning equipment included in accounts payable and accrued liabilities	443,120	518,231
Sales of revenue earning equipment included in receivables	230,715	299,577
Purchases of property and equipment included in accounts payable	58,701	41,917
Sales of property and equipment included in receivables	$ 13,698	$ 9,299