CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
OPERATING ACTIVITIES:
Net income	$ 155,068	$ 22,541
Less: Income from discontinued operations, net of tax expense	150,866	20,740
Income from continuing operations	4,202	1,801
Adjustments to reconcile net income from continuing operations to net cash provided by operating activities from continuing operations:
Depreciation and amortization expense	94,580	94,836
Amortization of long-term debt deferred financing costs	2,869	3,364
Amortization of debt premium and discount	(2,535)	(3,724)
Loss on extinguishment of debt	362
Non-cash convertible debt related expense	11,585	19,981
Stock-based compensation expense	8,987	9,421
Equity in net (income) loss from unconsolidated investments	(1,973)	243
Dividends from unconsolidated investments	4,581	1,783
Deferred income taxes	(1,856)	5,147
Other, net	3,123	4,367
Change in restricted funds held in trust	(9,449)	(1,116)
Change in working capital, net of effects of acquisitions	41,806	53,864
Total adjustments for continuing operations	152,080	188,166
Net cash provided by operating activities from continuing operations	156,282	189,967
Net cash (used in) provided by operating activities from discontinued operations	(4,503)	18,964
Net cash provided by operating activities	151,779	208,931
INVESTING ACTIVITIES:
Proceeds from the sale of investment securities	9,641	4,803
Purchase of investment securities	(7,847)	(8,241)
Purchase of property, plant and equipment	(67,737)	(64,460)
Acquisition of noncontrolling interests in subsidiaries		(2,000)
Acquisition of businesses, net of cash acquired	(9,500)	(128,366)
Loan issued for the Harrisburg EfW facility to fund certain facility improvements, net of repayments		(400)
Acquisition of land use rights	(8,181)	(15,098)
Other, net	(4,988)	(12,550)
Net cash used in investing activities from continuing operations	(88,612)	(226,312)
Net cash provided by (used in) investing activities from discontinued operations	219,296	(80)
Net cash provided by (used in) investing activities	130,684	(226,392)
FINANCING ACTIVITIES:
Principal payments on long-term debt	(9,436)	(3,268)
Principal payments on project debt	(76,913)	(95,449)
Proceeds from borrowings on project debt	8,698	2,661
Change in restricted funds held in trust	23,831	(16,027)
Proceeds from the exercise of options for common stock, net	403	703
Cash dividends paid to stockholders	(11,026)
Common stock repurchased	(123,100)
Distributions to partners of noncontrolling interests in subsidiaries	(3,068)	(2,690)
Other, net	(2,835)	5,559
Net cash used in financing activities from continuing operations	(193,446)	(108,511)
Net cash provided by (used in) financing activities from discontinued operations	14,638	(19,829)
Net cash used in financing activities	(178,808)	(128,340)
Effect of exchange rate changes on cash and cash equivalents	1,383	(2,556)
Net increase (decrease) in cash and cash equivalents	105,038	(148,357)
Cash and cash equivalents at beginning of period	140,646	433,683
Cash and cash equivalents at end of period	245,684	285,326
Less: Cash and cash equivalents of discontinued operations at end of period	10,623	14,717
Cash and cash equivalents of continuing operations at end of period	$ 235,061	$ 270,609