Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
ASSETS
Cash and cash equivalents	$ 74,197	$ 176,068
Trade accounts receivable	105,089	138,779
Other accounts receivable	24,880	14,561
Inventory	195,987	182,345
Energy commodity derivatives deposits	26,593	36,690
Other current assets	66,446	63,396
Total current assets	493,192	611,839
Property, plant and equipment	7,346,495	7,235,468
Less: Accumulated depreciation	1,732,486	1,682,633
Net property, plant and equipment	5,614,009	5,552,835
Investments in non-controlled entities	1,126,773	1,082,511
Long-term receivables	24,124	27,676
Goodwill	53,260	53,260
Other intangibles (less accumulated amortization of $1,389 and $1,590 at December 31, 2017 and March 31, 2018, respectively)	52,563	52,764
Other noncurrent assets	12,128	13,490
Total assets	7,376,049	7,394,375
LIABILITIES AND PARTNERS’ CAPITAL
Accounts payable	129,283	104,852
Accrued payroll and benefits	29,717	56,261
Accrued interest payable	52,701	70,657
Accrued taxes other than income	34,622	51,343
Environmental liabilities	9,352	6,235
Deferred revenue	119,258	117,795
Accrued product liabilities	85,266	96,159
Energy commodity derivatives contracts, net	16,289	25,694
Current portion of long-term debt, net	250,511	250,974
Other current liabilities	61,541	56,540
Total current liabilities	788,540	836,510
Long-term debt, net	4,272,747	4,273,518
Long-term pension and benefits	131,248	111,305
Other noncurrent liabilities	34,764	30,350
Environmental liabilities	9,563	13,039
Commitments and contingencies
Partners’ capital:
Limited partner unitholders (228,025 units and 228,195 units outstanding at December 31, 2017 and March 31, 2018, respectively)	2,271,486	2,267,231
Accumulated other comprehensive loss	(132,299)	(137,578)
Total partners’ capital	2,139,187	2,129,653
Total liabilities and partners’ capital	$ 7,376,049	$ 7,394,375