Consolidated Statements of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Cash flows from operating activities
Net income	$ 727	$ 923
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization expense	390	318
Amortization of debt issuance costs, deferred commitment fees, premium and discount	23	24
Loss on modification or extinguishment of debt	13	12
Total losses (gains) on derivatives, net	(30)	29
Net cash provided by (used for) settlement of derivative instruments	11	0
Impairment expense and loss on disposal of assets	6	8
Other	8	5
Changes in operating assets and liabilities:
Accounts and other receivables	36	(33)
Accounts receivable—affiliate	47	140
Advances to affiliate	(47)	(79)
Inventory	(3)	6
Accounts payable and accrued liabilities	(209)	(77)
Due to affiliates	(3)	(5)
Deferred revenue	54	6
Other, net	(42)	(10)
Other, net—affiliate	(4)	(3)
Net cash provided by operating activities	977	1,264
Cash flows from investing activities
Property, plant and equipment, net	(1,156)	(578)
Other	(1)	0
Net cash used in investing activities	(1,157)	(578)
Cash flows from financing activities
Proceeds from issuances of debt	2,230	1,100
Repayments of debt	(730)	(1,090)
Debt issuance and deferred financing costs	(33)	(8)
Debt extinguishment costs	(4)	(6)
Distributions to owners	(935)	(814)
Other	3	0
Net cash provided by (used in) financing activities	531	(818)
Net increase (decrease) in cash, cash equivalents and restricted cash	351	(132)
Cash, cash equivalents and restricted cash—beginning of period	1,541	1,589
Cash, cash equivalents and restricted cash—end of period	$ 1,892	$ 1,457