Consolidated Statements Of Cash Flows - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2020	Mar. 31, 2019
OPERATING ACTIVITIES
Net income (loss)		$ (907)	$ 1,219	[1]
Reconciliation of net income (loss) to net cash provided by operating activities:
Depreciation, depletion and amortization		851	771	[1]
Deferred income taxes		66	98	[1]
Inventory, LIFO Reserve, Period Charge		227	(93)	[1]
Non-cash compensation expense		18	29	[1]
Asset Impairment Charges		1,325	50	[1]
Gain (Loss) on Extinguishment of Debt		59	2	[1]
Distributions on unvested awards		(2)	(1)	[1]
Equity in (earnings) losses of unconsolidated affiliates		7	(65)	[1]
Distributions from unconsolidated affiliates		(58)	(66)	[1]
Other non-cash		11	107	[1]
Net change in operating assets and liabilities, net of effects of acquisitions		113	(337)	[1]
Net Cash Provided by (Used in) Operating Activities, Continuing Operations		1,826	1,846	[1]
INVESTING ACTIVITIES
Proceeds from Sale of Equity Method Investments		0	93	[1]
Cash paid for all other acquisitions, net of cash received		0	5	[1]
Capital expenditures, excluding allowance for equity funds used during construction		(1,621)	(1,150)	[1]
Contributions in aid of construction costs		25	15	[1]
Contributions to unconsolidated affiliates		(9)	(28)	[1]
Distributions from unconsolidated affiliates in excess of cumulative earnings		52	13	[1]
Proceeds from the sale of other assets		2	4	[1]
Payments for (Proceeds from) Other Investing Activities		6	40	[1]
Net Cash Provided by (Used in) Investing Activities, Continuing Operations		(1,557)	(1,098)	[1]
FINANCING ACTIVITIES
Proceeds from Issuance of Preferred Limited Partners Units		1,580	0	[1]
Proceeds from borrowings		12,088	11,295	[1]
Repayments of debt		(12,769)	(9,513)	[1]
Cash received from (paid to) related company		611	(613)	[1]
Capital contributions from noncontrolling interests		66	140	[1]
Distributions to partners		(1,530)	(1,514)	[1]
Distributions to noncontrolling interests		(340)	(361)	[1]
Debt issuance costs		51	84	[1]
Net cash used in financing activities		(345)	(650)	[1]
Increase (decrease) in cash and cash equivalents		(76)	98	[1]
Cash and cash equivalents, beginning of period	[1]	265	418
Cash and cash equivalents, end of period		$ 189	$ 516	[1]

[1] *As adjusted. See Note 1.