Consolidated Statements of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Operating activities:
Net income	$ 1,626	$ 1,470
Adjustments to reconcile net income to net cash provided by operating activities:
Amortization of deferred financing costs and debt discount	9	35
Depreciation and amortization	1,805	1,061
Pension and other postretirement benefits, net	86	65
Deferred income taxes	360	2
Net gain on disposal of assets	(218)	(5)
Income from equity method investments	(206)	(166)
Distributions from equity method investments	310	217
Changes in the fair value of derivative instruments	(27)	1
Changes in operating assets and liabilities, net of effects of businesses acquired:
Current receivables	(1,750)	(225)
Inventories	740	66
Current accounts payable and accrued liabilities	1,297	(231)
Right of use assets and operating lease liabilities, net	9	0
All other, net	204	(41)
Net cash provided by operating activities	4,245	2,249
Investing activities:
Additions to property, plant and equipment	(2,419)	(1,466)
Acquisitions, net of cash acquired	6	0
Disposal of assets	33	14
Investments – acquisitions, loans and contributions	(595)	(118)
Investments - redemptions, repayments and return of capital	58	15
All other, net	37	37
Net cash used in investing activities	(2,880)	(1,518)
Financing activities:
Long-term debt – borrowings	7,964	9,610
Long-term debt – repayments	(7,116)	(5,270)
Debt issuance costs	0	(53)
Issuance of common stock	3	21
Common stock repurchased	(1,385)	(2,212)
Dividends paid	(706)	(430)
Distributions to noncontrolling interests	(640)	(394)
Contributions from noncontrolling interests	95	5
All other, net	(56)	(19)
Net cash provided by (used in) financing activities	(1,841)	1,258
Net increase (decrease) in cash, cash equivalents and restricted cash	(476)	1,989
Cash, cash equivalents and restricted cash at beginning of period	1,725	3,015
Cash, cash equivalents and restricted cash at end of period	$ 1,249	$ 5,004