CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Cash flows from operating activities:
Net income (loss)	$ 36,555	$ (68,857)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation of revenue earning equipment	989,300	809,433
Depreciation of property and equipment	83,756	77,140
Amortization of other intangible assets	39,029	33,679
Amortization and write-off of deferred financing costs	30,560	64,251
Amortization and write-off of debt discount	14,888	22,677
Stock-based compensation charges	14,977	16,630
Gain on derivatives	(856)	(2,203)
Loss on revaluation of foreign denominated debt	2,498
Provision for losses on doubtful accounts	13,582	14,313
Asset writedowns	3,181	23,311
Deferred taxes on income	31,329	(29,184)
Gain on sale of property and equipment	(716)	(4,748)
Changes in assets and liabilities, net of effects of acquisition:
Receivables	(226,556)	(187,818)
Inventories, prepaid expenses and other assets	(33,056)	(57,878)
Accounts payable	142,051	138,214
Accrued liabilities	7,926	(179,327)
Accrued taxes	16,806	21,667
Public liability and property damage	(6,842)	(4,393)
Net cash provided by operating activities	1,158,412	686,907
Cash flows from investing activities:
Net change in restricted cash and cash equivalents	130,137	(60,233)
Revenue earning equipment expenditures	(5,698,892)	(5,466,856)
Proceeds from disposal of revenue earning equipment	3,608,323	3,488,890
Property and equipment expenditures	(137,168)	(125,370)
Proceeds from disposal of property and equipment	56,421	28,388
Acquisitions, net of cash acquired	(161,844)	(10,976)
Purchase of short-term investments, net		(32,891)
Other investing activities	(625)	1,303
Net cash used in investing activities	(2,203,648)	(2,177,745)
Cash flows from financing activities:
Proceeds from issuance of long-term debt	270,529	3,028,591
Payment of long-term debt	(643,083)	(3,631,480)
Short-term borrowings:
Proceeds	246,664	285,803
Payments	(656,231)	(489,217)
Proceeds (payments) under the revolving lines of credit, net	1,543,770	728,855
Distributions to noncontrolling interest		(10,500)
Purchase of noncontrolling interest	(38,000)
Proceeds from employee stock purchase plan	1,988	1,716
Proceeds from exercise of stock options	5,742	11,581
Proceeds from disgorgement of stockholder short-swing profits	17	72
Net settlement on vesting of restricted stock	(19,976)	(11,381)
Payment of financing costs	(6,949)	(81,392)
Net cash provided by (used in) financing activities	704,471	(167,352)
Effect of foreign exchange rate changes on cash and cash equivalents	(4,813)	31,602
Net decrease in cash and cash equivalents during the period	(345,578)	(1,626,588)
Cash and cash equivalents at beginning of period	931,779	2,374,170
Cash and cash equivalents at end of period	586,201	747,582
Cash paid during the period for:
Interest (net of amounts capitalized)	281,864	343,383
Income taxes	37,655	25,338
Supplemental disclosures of non-cash flow information:
Purchases of revenue earning equipment included in accounts payable and accrued liabilities	598,620	628,695
Sales of revenue earning equipment included in receivables	178,409	263,954
Purchases of property and equipment included in accounts payable	42,060	59,633
Sales of property and equipment included in receivables	$ 9,163	$ 14,356