Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 13,496	$ 218,283
Trade accounts receivable	134,120	104,164
Other accounts receivable	31,937	25,007
Inventory	195,048	185,735
Energy commodity derivatives contracts, net	0	55,011
Energy commodity derivatives deposits	23,820	0
Other current assets	39,767	58,143
Total current assets	438,188	646,343
Property, plant and equipment	7,808,952	7,628,592
Less: accumulated depreciation	1,883,358	1,830,411
Net property, plant and equipment	5,925,594	5,798,181
Investments in non-controlled entities	1,128,626	1,076,306
Right-of-use asset, operating leases	172,105	0
Long-term receivables	20,646	20,844
Goodwill	53,260	53,260
Other intangibles (less accumulated amortization of $2,979 and $4,253 at December 31, 2018 and March 31, 2019, respectively)	49,900	51,174
Restricted cash	37,033	90,978
Other noncurrent assets	19,199	10,451
Total assets	7,844,551	7,747,537
Current liabilities:
Accounts payable	192,969	138,735
Accrued payroll and benefits	31,211	70,276
Accrued interest payable	46,788	63,258
Accrued taxes other than income	41,073	53,093
Environmental liabilities	6,851	9,153
Deferred revenue	118,690	121,085
Accrued product liabilities	94,431	75,482
Energy commodity derivatives contracts, net	13,272	0
Energy commodity derivatives deposits	0	37,328
Current portion of operating lease liability	23,264	0
Current portion of long-term debt, net	0	59,489
Other current liabilities	54,819	48,657
Total current liabilities	623,368	676,556
Long-term operating lease liability	148,603	0
Long-term debt, net	4,279,676	4,211,380
Long-term pension and benefits	124,652	122,580
Other noncurrent liabilities	40,295	82,240
Environmental liabilities	11,702	11,347
Commitments and contingencies
Partners’ capital:
Limited partner unitholders (228,195 units and 228,403 units outstanding at December 31, 2018 and March 31, 2019, respectively)	2,739,192	2,763,925
Accumulated other comprehensive loss	(122,937)	(120,491)
Total partners’ capital	2,616,255	2,643,434
Total liabilities and partners’ capital	$ 7,844,551	$ 7,747,537