CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 9		$ 4
Accounts receivable, net	36		46
Accounts receivable from related companies	5		17
Exchanges receivable	9		7
Inventories	116		179
Other current assets	2		4
Total current assets	177		257
Property, plant and equipment:
Property, Plant and Equipment, Gross	3,289		3,242
Accumulated depreciation	(381)		(355)
Net property, plant and equipment	2,908		2,887
Other non-current assets, net	155		153
Notes receivable from related parties	182		251
Goodwill	285		285
Total assets	$ 3,707		3,833
Current liabilities:
Current maturities of long-term debt		$ 715	307
Accounts payable and accrued liabilities		4	11
Accounts payable to related companies		42	66
Exchanges payable		101	165
Accrued interest		12	12
Customer advances and deposits		9	9
Other current liabilities		43	40
Total current liabilities		926	610
Long-term debt, less current maturities		414	834
Deferred income taxes		730	711
Other non-current liabilities		221	217
Commitments and contingencies
Partners’ capital:
Partners’ capital		1,411	1,456
Accumulated other comprehensive income		5	5
Total partners’ capital		1,416	1,461
Total liabilities and partners’ capital		$ 3,707	$ 3,833