Consolidated Statements Of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
OPERATING ACTIVITIES
Net income (loss)	$ (964)	$ 1,118
Reconciliation of net income (loss) to net cash provided by operating activities:
Depreciation, depletion and amortization	867	774
Deferred income taxes	42	98
Non-cash compensation expense	22	29
Impairment losses	1,325	50
Losses on extinguishments of debt	(62)	(18)
Equity in (earnings) losses of unconsolidated affiliates	7	(65)
Distributions from unconsolidated affiliates	58	66
Inventory valuation adjustments	227	(93)
Distributions on unvested awards	(11)	(8)
Other non-cash	17	107
Net change in operating assets and liabilities, net of effects of acquisitions	164	(279)
Net Cash Provided by (Used in) Operating Activities, Continuing Operations	1,816	1,815
INVESTING ACTIVITIES
Proceeds from Divestiture of Businesses and Interests in Affiliates	0	93
Cash paid for all other acquisitions, net of cash received	0	(5)
Capital expenditures, excluding allowance for equity funds used during construction	(1,621)	(1,150)
Contributions in aid of construction costs	25	15
Contributions to unconsolidated affiliate	9	28
Distributions from unconsolidated affiliates in excess of cumulative earnings	52	13
Proceeds from the sale of other assets	2	4
Other	6	40
Net Cash Provided by (Used in) Investing Activities, Continuing Operations	(1,557)	(1,098)
FINANCING ACTIVITIES
Proceeds from borrowings	12,134	11,295
Repayments of debt	(12,898)	(10,733)
Subsidiary equity offerings, net of issue costs	1,580	0
Distributions to partners	(770)	(800)
Debt issuance costs	(51)	(84)
Distributions to noncontrolling interests	(444)	(425)
Capital contributions from noncontrolling interest	95	140
Net cash used in financing activities	(354)	(607)
Increase (decrease) in cash and cash equivalents	(95)	110
Cash and cash equivalents, beginning of period	291	419
Cash and cash equivalents, end of period	$ 196	$ 529