Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
Cash Flows From Operating Activities:
Net loss	$ (163,565)	$ (15,073)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation, amortization and impairment	56,143	46,002
Amortization of debt issue costs	2,855	2,773
Equity in loss (earnings) from unconsolidated affiliates	158,581	19,788
Distributions from unconsolidated affiliates	17,961	16,999
Loss on refinancing of unsecured debt	18,233
Non-cash gain on risk management activities, net	(4,723)	(555)
Equity-based compensation	7,445	7,118
Deferred tax provision	253	(19)
Other non-cash items	(86)	(458)
Changes in assets and liabilities, net of acquisitions:
Accounts receivable	(11,132)	10,586
Prepayments and other current assets	(2,952)	2,135
Risk management activities	11,353	10,766
Accounts payable	17,459	(6,518)
Other current liabilities	14,964	945
Net cash provided by operating activities	122,789	94,489
Cash Flows From Investing Activities:
Additions to property, plant and equipment	(175,323)	(101,265)
Additions to intangible assets	(5,316)	(2,259)
Acquisitions	(16,084)
Investments in unconsolidated affiliates	(105,111)	(11,186)
Distributions from unconsolidated affiliates	2,368	2,555
Escrow cash	6
Proceeds from sale of assets	248	279
Other	98	280
Net cash used in investing activities	(299,114)	(111,596)
Cash Flows From Financing Activities:
Proceeds from long-term debt	725,000	80,000
Repayment of long-term debt	(412,665)	(350,000)
Payments of premiums and expenses on redemption of unsecured debt	(14,572)
Deferred financing costs	(15,743)	(995)
Distributions to unit holders	(114,834)	(107,612)
Proceeds from issuance of Series A convertible preferred units, net of underwriting discounts and commissions of $8,935		291,065
Proceeds from public offering of common units, net of underwriting discounts and commissions of $7,223		164,786
Equity offering costs	(4)	(6,236)
Proceeds from option exercises	2,747	3,188
Net cash provided by financing activities	169,929	74,196
Net (decrease) increase in cash and cash equivalents	(6,396)	57,089
Cash and cash equivalents, beginning of year	59,930	44,692
Cash and cash equivalents, end of period	$ 53,534	$ 101,781