CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 6	$ 2
Accounts receivable, net	38	45
Accounts receivable from related companies	12	12
Exchanges receivable	10	5
Inventories	86	150
Other current assets	1	3
Total current assets	153	217
Property, plant and equipment:
Property, plant and equipment	3,230	3,199
Accumulated depreciation	(475)	(419)
Net property, plant and equipment	2,755	2,780
Other non-current assets, net	173	167
Goodwill	23	23
Total assets	3,104	3,187
Current liabilities:
Current maturities of long-term debt	155	407
Accounts payable and accrued liabilities	3	3
Accounts payable to related companies	33	32
Exchanges payable	70	131
Other current liabilities	61	53
Total current liabilities	322	626
Long-term debt, less current maturities	253	411
Note payable to related party	426	113
Deferred income taxes	467	451
Other non-current liabilities	246	241
Commitments and contingencies
Partners’ capital:
Partners’ capital	1,396	1,348
Accumulated other comprehensive loss	(6)	(3)
Total partners’ capital	1,390	1,345
Total liabilities and partners’ capital	$ 3,104	$ 3,187