Consolidated Statement of Cash Flows (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
OPERATING ACTIVITIES:
Net income (loss)	$ 214	$ 270
Adjustments to reconcile to net cash provided (used) by operating activities:
Depreciation and amortization	416	431
Provision (benefit) for deferred income taxes	75	73
Equity (earnings) losses	(80)	(82)
Distributions from unconsolidated affiliates	172	140
Impairment of equity-method investments (Note 2)	74	0
Amortization of stock-based awards	14	14
Cash provided (used) by changes in current assets and liabilities:
Accounts and notes receivable	97	238
Inventories	1	(40)
Other current assets and deferred charges	(6)	(4)
Accounts payable	(39)	(197)
Accrued liabilities	(142)	(166)
Other, including changes in noncurrent assets and liabilities	(21)	17
Net cash provided (used) by operating activities	775	694
FINANCING ACTIVITIES:
Proceeds from (payments of) commercial paper – net	1,014	0
Proceeds from long-term debt	708	2,048
Payments of long-term debt	(864)	(1,060)
Proceeds from issuance of common stock	6	10
Common dividends paid	(460)	(281)
Dividends and distributions paid to noncontrolling interests	(41)	(165)
Contributions from noncontrolling interests	4	3
Payments for debt issuance costs	0	(18)
Other – net	(9)	(40)
Net cash provided (used) by financing activities	358	497
INVESTING ACTIVITIES:
Capital expenditures (1)	(422)	(957)
Dispositions – net	(4)	(1)
Contributions in aid of construction	10	190
Purchases of businesses, net of cash acquired	(727)	0
Purchases of and contributions to equity-method investments	(99)	(21)
Other – net	(16)	(9)
Net cash provided (used) by investing activities	(1,258)	(798)
Increase (decrease) in cash and cash equivalents	(125)	393
Cash and cash equivalents at beginning of year	168	899
Cash and cash equivalents at end of period	43	1,292
(1) Increases to property, plant, and equipment	(418)	(934)
Changes in related accounts payable and accrued liabilities	(4)	(23)
Capital expenditures (1)	$ (422)	$ (957)