Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
ASSETS
Cash and cash equivalents	$ 151,642	$ 209,620
Trade accounts receivable (less allowance for doubtful accounts of $68 and $2 at December 31, 2011 and March 31, 2012, respectively)	103,052	82,497
Other accounts receivable	12,338	10,079
Inventory	240,167	258,860
Energy commodity derivatives contracts, net		4,914
Energy commodity derivatives deposits, net	41,667	26,917
Reimbursable costs	4,806	5,891
Other current assets	12,776	13,412
Total current assets	566,448	612,190
Property, plant and equipment	4,105,951	4,080,484
Less: accumulated depreciation	853,660	830,762
Net property, plant and equipment	3,252,291	3,249,722
Equity investments	39,379	35,594
Long-term receivables	2,852	2,534
Goodwill	53,260	53,260
Other intangibles (less accumulated amortization of $14,813 and $15,479 at December 31, 2011 and March 31, 2012, respectively)	14,510	15,176
Debt placement costs (less accumulated amortization of $5,799 and $6,318 at December 31, 2011 and March 31, 2012, respectively)	14,096	14,615
Tank bottom inventory	64,761	59,473
Other noncurrent assets	2,197	2,437
Total assets	4,009,794	4,045,001
LIABILITIES AND PARTNERS' CAPITAL
Accounts payable	48,542	66,384
Accrued payroll and benefits	16,200	30,184
Accrued interest payable	33,259	40,547
Accrued taxes other than income	21,863	27,570
Environmental liabilities	16,881	17,852
Deferred revenue	41,993	39,983
Accrued product purchases	67,505	59,800
Energy commodity derivatives contracts, net	4,654	(4,914)
Other current liabilities	21,362	28,735
Total current liabilities	272,259	311,055
Long-term debt	2,150,107	2,151,775
Long-term pension and benefits	71,319	67,080
Other noncurrent liabilities	23,659	19,905
Environmental liabilities	30,645	31,783
Commitments and contingencies
Partners' capital:
Limited partner unitholders (112,737 units and 113,100 units outstanding at December 31, 2011 and March 31, 2012, respectively)	1,508,195	1,510,604
Accumulated other comprehensive loss	(46,390)	(47,201)
Total partners' capital	1,461,805	1,463,403
Total liabilities and partners' capital	$ 4,009,794	$ 4,045,001