Consolidated Statement of Cash Flows (Unaudited) - USD ($) $ in Millions	6 Months Ended
Jun. 30, 2021	Jun. 30, 2020
OPERATING ACTIVITIES:
Net income (loss)	$ 757	$ (255)
Adjustments to reconcile to net cash provided (used) by operating activities:
Depreciation and amortization	901	859
Provision (benefit) for deferred income taxes	262	(59)
Equity (earnings) losses	(266)	(130)
Distributions from unconsolidated affiliates	345	323
Impairment of goodwill (Note 10)	0	187
Impairment of equity-method investments (Note 10)	0	938
Amortization of stock-based awards	39	24
Cash provided (used) by changes in current assets and liabilities:
Accounts receivable	(50)	85
Inventories	(58)	(9)
Other current assets and deferred charges	(56)	(13)
Accounts payable	94	236
Accrued liabilities	14	(236)
Other, including changes in noncurrent assets and liabilities	(10)	(20)
Net cash provided (used) by operating activities	1,972	1,930
FINANCING ACTIVITIES:
Proceeds from long-term debt	898	3,896
Payments of long-term debt	(11)	(3,226)
Proceeds from issuance of common stock	3	6
Common dividends paid	(996)	(971)
Dividends and distributions paid to noncontrolling interests	(95)	(98)
Contributions from noncontrolling interests	6	4
Payments for debt issuance costs	(6)	(17)
Other – net	(12)	(10)
Net cash provided (used) by financing activities	(213)	(416)
INVESTING ACTIVITIES:
Capital expenditures (1)	(685)	(613)
Dispositions – net	(5)	(16)
Contributions in aid of construction	36	19
Proceeds from dispositions of equity-method investments	1	0
Purchases of and contributions to equity-method investments	(44)	(66)
Other – net	(3)	6
Net cash provided (used) by investing activities	(700)	(670)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect, Total	1,059	844
Cash and cash equivalents at beginning of year	142	289
Cash and cash equivalents at end of period	1,201	1,133
Additional Cash Flow Elements and Supplemental Cash Flow Information [Abstract]
(1) Increases to property, plant, and equipment	(693)	(581)
Changes in related accounts payable and accrued liabilities	8	(32)
Capital expenditures	$ (685)	$ (613)

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