Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 217,423	$ 160,840
Trade accounts receivable	137,618	138,779
Other accounts receivable	24,025	14,561
Inventory	179,366	182,345
Energy commodity derivatives deposits	47,354	36,690
Other current assets	66,221	63,396
Total current assets	672,007	596,611
Property, plant and equipment	7,570,759	7,235,468
Less: accumulated depreciation	1,835,824	1,682,633
Net property, plant and equipment	5,734,935	5,552,835
Investments in non-controlled entities	1,005,392	1,082,511
Long-term receivables	23,520	27,676
Goodwill	53,260	53,260
Other intangibles (less accumulated amortization of $1,389 and $2,493 at December 31, 2017 and September 30, 2018, respectively)	51,660	52,764
Restricted cash	42,807	15,228
Other noncurrent assets	12,087	13,490
Total assets	7,595,668	7,394,375
Current liabilities:
Accounts payable	137,169	104,852
Accrued payroll and benefits	53,285	56,261
Accrued interest payable	49,309	70,657
Accrued taxes other than income	52,307	51,343
Environmental liabilities	10,537	6,235
Deferred revenue	121,247	117,795
Accrued product liabilities	80,195	96,159
Energy commodity derivatives contracts, net	32,244	25,694
Current portion of long-term debt, net	552,898	250,974
Other current liabilities	37,873	56,540
Total current liabilities	1,127,064	836,510
Long-term debt, net	3,718,607	4,273,518
Long-term pension and benefits	125,088	111,305
Other noncurrent liabilities	64,425	30,350
Environmental liabilities	13,064	13,039
Commitments and contingencies
Partners’ capital:
Limited partner unitholders (228,025 units and 228,195 units outstanding at December 31, 2017 and September 30, 2018, respectively)	2,665,620	2,267,231
Accumulated other comprehensive loss	(118,200)	(137,578)
Total partners’ capital	2,547,420	2,129,653
Total liabilities and partners’ capital	$ 7,595,668	$ 7,394,375