Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Cash flows from operating activities:
Net income	$ 3,628	$ 4,171
Depreciation, amortization and other	1,827	996
Deferred income taxes	(261)	(70)
Other items, net	245	32
Changes in operating assets and liabilities, net of acquisition:
Trade receivables, net	(1,177)	(228)
Inventories	(226)	(118)
Other assets	143	(158)
Accounts payable	(216)	(205)
Accrued income taxes, net	452	(257)
Long-term tax liabilities	106	(322)
Other liabilities	455	(582)
Net cash provided by operating activities	4,976	3,259
Cash flows from investing activities:
Purchases of marketable securities	(2,229)	(7,250)
Proceeds from sales of marketable securities	2,598	217
Proceeds from maturities of marketable securities	238	13,617
Purchases of property, plant and equipment	(300)	(260)
Purchases of equity method investments	(2,648)	(12)
Other	(48)	(12)
Net cash (used in) provided by investing activities	(2,389)	6,300
Cash flows from financing activities:
Proceeds from Issuance of Long-term Debt	9,002	0
Repayment of debt	(5,000)	(3,650)
Repurchases of common stock	(1,516)	(5,447)
Dividends paid	(1,887)	(1,781)
Other	(78)	(101)
Net cash provided by (used in) financing activities	521	(10,979)
Increase (decrease) in cash and cash equivalents	3,108	(1,420)
Cash and cash equivalents at beginning of period	6,037	6,945
Cash and cash equivalents at end of period	$ 9,145	$ 5,525