Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
ASSETS
Cash and cash equivalents	$ 233,716	$ 209,620
Trade accounts receivable (less allowance for doubtful accounts of $68 and $0 at December 31, 2011 and June 30, 2012, respectively)	82,201	82,497
Other accounts receivable	11,400	10,079
Inventory	215,667	258,860
Energy commodity derivatives contracts, net	13,878	4,914
Energy commodity derivatives deposits, net	8,239	26,917
Reimbursable costs	5,042	5,891
Other current assets	21,707	13,412
Total current assets	591,850	612,190
Property, plant and equipment	4,173,150	4,080,484
Less: accumulated depreciation	883,467	830,762
Net property, plant and equipment	3,289,683	3,249,722
Equity investments	51,439	35,594
Long-term receivables	3,097	2,534
Goodwill	53,260	53,260
Other intangibles (less accumulated amortization of $14,813 and $15,955 at December 31, 2011 and June 30, 2012, respectively)	14,035	15,176
Debt placement costs (less accumulated amortization of $5,799 and $6,836 at December 31, 2011 and June 30, 2012, respectively)	13,578	14,615
Tank bottom inventory	55,025	59,473
Other noncurrent assets	3,022	2,437
Total assets	4,074,989	4,045,001
LIABILITIES AND PARTNERS' CAPITAL
Accounts payable	67,235	66,384
Accrued payroll and benefits	21,696	30,184
Accrued interest payable	40,547	40,547
Accrued taxes other than income	24,856	27,570
Environmental liabilities	12,422	17,852
Deferred revenue	41,035	39,983
Accrued product purchases	55,142	59,800
Energy commodity derivatives deposits, net	17,196
Other current liabilities	19,144	28,735
Total current liabilities	299,273	311,055
Long-term debt	2,148,432	2,151,775
Long-term pension and benefits	69,771	67,080
Other noncurrent liabilities	15,283	19,905
Environmental liabilities	31,147	31,783
Commitments and contingencies
Partners' capital:
Limited partner unitholders (112,737 units and 113,100 units outstanding at December 31, 2011 and June 30, 2012, respectively)	1,553,986	1,510,604
Accumulated other comprehensive loss	(42,903)	(47,201)
Total partners' capital	1,511,083	1,463,403
Total liabilities and partners' capital	$ 4,074,989	$ 4,045,001