Condensed Consolidated Statement of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Statement of Cash Flows [Abstract]
Net income from continuing operations	$ 3,859	$ 3,374
Adjustments to reconcile net income from continuing operations to net cash flows provided by operating activities:
Depreciation and amortization	3,060	3,413
Deferred income tax (benefit)	(1,681)	(142)
Stock compensation cost	318	343
Net periodic pension and other postretirement income	(1,062)	(1,073)
Change in:
Accounts receivable	321	(397)
Contract assets	(999)	(1,117)
Inventory	(1,434)	(57)
Other current assets	(584)	(275)
Accounts payable and accrued liabilities	1,298	425
Contract liabilities	(284)	83
Other operating activities, net	(272)	(596)
Net cash flows provided by operating activities from continuing operations	2,540	3,981
Investing Activities:
Capital expenditures	(1,433)	(1,180)
Investments in businesses	(66)	(6)
Dispositions of businesses, net of cash transferred (Note 2)	94	1,074
Customer financing assets receipts, net	25	24
Increase in collaboration intangible assets	(169)	(138)
(Payments) receipts from settlements of derivative contracts, net	(259)	42
Other investing activities, net	(83)	45
Net cash flows used in investing activities from continuing operations	(1,891)	(139)
Financing Activities:
Issuance of long-term debt	0	1,981
Repayment of long-term debt	(2)	(2,547)
Change in commercial paper, net (Note 8)	2,067	0
Change in other short-term borrowings, net	(14)	(41)
Dividends paid on common stock	(2,337)	(2,212)
Repurchase of common stock	(2,395)	(2,000)
Net transfers to discontinued operations	0	(27)
Other financing activities, net	(329)	(336)
Net cash flows used in financing activities from continuing operations	(3,010)	(5,182)
Discontinued Operations:
Net cash used in operating activities	0	(27)
Net cash used in investing activities	0	0
Net cash provided by financing activities	0	27
Net cash used in discontinued operations	0	0
Effect of foreign exchange rate changes on cash and cash equivalents	(57)	10
Net decrease in cash, cash equivalents and restricted cash	(2,418)	(1,330)
Cash, cash equivalents and restricted cash, beginning of period	7,853	8,832
Cash, cash equivalents and restricted cash, end of period	5,435	7,502
Less: Restricted cash, included in other assets	54	26
Cash and cash equivalents, end of period	$ 5,381	$ 7,476