Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
CURRENT ASSETS:
Cash and cash equivalents	$ 11,138	$ 9,462
Accounts receivable-trade, net	202,632us-gaap_AccountsReceivableNetCurrent	271,529us-gaap_AccountsReceivableNetCurrent
Inventories	63,802us-gaap_InventoryNet	46,829us-gaap_InventoryNet
Other	30,368us-gaap_OtherAssetsCurrent	27,546us-gaap_OtherAssetsCurrent
Total current assets	307,940us-gaap_AssetsCurrent	355,366us-gaap_AssetsCurrent
FIXED ASSETS, at cost	2,017,239us-gaap_PropertyPlantAndEquipmentGross	1,899,058us-gaap_PropertyPlantAndEquipmentGross
Less: Accumulated depreciation	(287,077)	(268,057)
Net fixed assets	1,730,162us-gaap_PropertyPlantAndEquipmentNet	1,631,001us-gaap_PropertyPlantAndEquipmentNet
NET INVESTMENT IN DIRECT FINANCING LEASES, net of unearned income	144,458	145,959
EQUITY INVESTEES	620,147us-gaap_EquityMethodInvestments	628,780us-gaap_EquityMethodInvestments
INTANGIBLE ASSETS, net of amortization	79,918	82,931
GOODWILL	325,046us-gaap_Goodwill	325,046us-gaap_Goodwill
OTHER ASSETS, net of amortization	64,469us-gaap_OtherAssetsNoncurrent	61,291us-gaap_OtherAssetsNoncurrent
TOTAL ASSETS	3,272,140us-gaap_Assets	3,230,374us-gaap_Assets
CURRENT LIABILITIES:
Accounts payable-trade	203,298us-gaap_AccountsPayableCurrent	245,405us-gaap_AccountsPayableCurrent
Accrued liabilities	139,273us-gaap_AccruedLiabilitiesCurrent	117,740us-gaap_AccruedLiabilitiesCurrent
Total current liabilities	342,571us-gaap_LiabilitiesCurrent	363,145us-gaap_LiabilitiesCurrent
SENIOR SECURED CREDIT FACILITY	648,400us-gaap_SecuredLongTermDebt	550,400us-gaap_SecuredLongTermDebt
SENIOR UNSECURED NOTES	1,050,604us-gaap_UnsecuredLongTermDebt	1,050,639us-gaap_UnsecuredLongTermDebt
DEFERRED TAX LIABILITIES	19,363	18,754
OTHER LONG-TERM LIABILITIES	18,326us-gaap_OtherLiabilitiesNoncurrent	18,233us-gaap_OtherLiabilitiesNoncurrent
COMMITMENTS AND CONTINGENCIES (Note 15)
PARTNERS' CAPITAL:
Limited Partners' Capital Account	1,192,876us-gaap_LimitedPartnersCapitalAccount	1,229,203us-gaap_LimitedPartnersCapitalAccount
TOTAL LIABILITIES AND PARTNERS' CAPITAL	$ 3,272,140	$ 3,230,374

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19

-Subparagraph a

-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(a))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682