CONSOLIDATED STATEMENTS OF CASH FLOWS $ in Millions	12 Months Ended
	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Cash Flows From Operating Activities:
Net (Loss)/Earnings	$ (8,995)	$ 3,460	$ 4,947
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization, net	10,380	1,746	637
Deferred income taxes	983	(924)	45
Stock-based compensation	779	441	221
Impairment charges	1,203	199	126
Pension settlements and amortization	43	1,688	186
Divestiture gains and royalties	(699)	(1,855)	(992)
MyoKardia Asset Acquisition IPRD Charge	11,438	0	0
Asset acquisition charges	1,099	63	1,211
Gain (Loss) on Investments, Excluding Other than Temporary Impairments	1,228	275	(513)
Equity investment (gains)/losses	(1,228)	(275)	513
Contingent consideration fair value adjustments	(1,757)	523	0
Other adjustments	(177)	(26)	(45)
Changes in operating assets and liabilities:
Receivables	(646)	752	(429)
Inventories	2,672	463	(216)
Accounts payable	188	229	(59)
Income taxes payable	(2,305)	907	203
Other	1,074	819	718
Net Cash Provided by Operating Activities	14,052	8,210	7,066
Cash Flows From Investing Activities:
Sale and maturities of marketable securities	6,280	3,809	2,379
Purchase of marketable securities	(4,172)	(3,961)	(2,305)
Capital expenditures	(753)	(836)	(951)
Divestiture and other proceeds	870	15,852	1,249
Acquisition and other payments, net of cash acquired	(13,084)	(24,777)	(2,372)
Net Cash Used in Investing Activities	(10,859)	(9,913)	(2,000)
Cash Flows From Financing Activities:
Short-term borrowings, net	(267)	131	(543)
Issuance of long-term debt	6,945	26,778	0
Repayment of long-term debt	(2,750)	(9,256)	(5)
Repurchase of common stock	(1,546)	(7,300)	(320)
Dividends	(4,075)	(2,679)	(2,613)
Other	542	(53)	(54)
Net Cash (Used in)/Provided by Financing Activities	(1,151)	7,621	(3,535)
Effect of Exchange Rate on Cash, Cash Equivalents and Restricted Cash	111	(9)	(41)
Increase in Cash, Cash Equivalents and Restricted Cash	2,153	5,909	1,490
Cash, Cash Equivalents and Restricted Cash	$ 14,973	$ 12,820	$ 6,911