Consolidated Statement of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Operating Activities:
Net income from continuing operations	$ 3,380	$ 5,327	$ 4,145
Adjustments to reconcile net income (loss) from continuing operations to net cash flows provided by operating activities:
Depreciation and amortization	4,211	4,108	4,557
Deferred income tax benefit	(402)	(1,663)	(88)
Stock compensation cost	425	420	442
Net periodic pension and other postretirement income	(1,555)	(1,413)	(1,414)
Debt extinguishment costs	0	0	649
Change in:
Accounts receivable	(1,805)	437	(570)
Contract assets	(753)	(234)	(1,594)
Inventory	(1,104)	(1,575)	163
Other current assets	(1,161)	(1,027)	(566)
Accounts payable and accrued liabilities	4,016	2,075	917
Contract liabilities	2,322	846	1,372
Other operating activities, net	309	(133)	(871)
Net cash flows provided by operating activities from continuing operations	7,883	7,168	7,142
Investing Activities:
Capital expenditures	(2,415)	(2,288)	(2,134)
Payments on customer financing assets	(117)	(150)	(231)
Receipts from customer financing assets	212	179	389
Investments in businesses	0	(66)	(1,088)
Dispositions of businesses, net of cash transferred	6	94	1,879
Increase in other intangible assets	(751)	(487)	(308)
Receipts (payments) from settlements of derivative contracts, net	14	(205)	(16)
Other investing activities, net	12	94	145
Net cash flows used in investing activities from continuing operations	(3,039)	(2,829)	(1,364)
Financing Activities:
Proceeds from long-term debt	12,914	1	4,062
Repayment of long-term debt	(578)	(3)	(4,254)
Proceeds from bridge loan	10,000	0	0
Repayment of bridge loan	(10,000)	0	0
Debt extinguishment costs	0	0	(649)
Change in commercial paper, net (Note 9)	(524)	518	(160)
Change in other short-term borrowings, net	87	(29)	47
Dividends paid on common stock	(3,239)	(3,128)	(2,957)
Repurchase of Common Stock	(12,870)	(2,803)	(2,327)
Net transfers to discontinued operations	0	0	(71)
Other financing activities, net	(317)	(415)	(447)
Net cash flows used in financing activities from continuing operations	(4,527)	(5,859)	(6,756)
Discontinued Operations:
Net cash used in operating activities	0	0	(71)
Net cash used in investing activities	0	0	0
Net cash provided by financing activities	0	0	71
Net cash used in discontinued operations	0	0	0
Effect of foreign exchange rate changes on cash and cash equivalents from continuing operations	18	(42)	(1)
Net increase (decrease) in cash, cash equivalents and restricted cash	335	(1,562)	(979)
Cash, cash equivalents and restricted cash, beginning of year	6,291	7,853	8,832
Cash, cash equivalents and restricted cash, end of year	6,626	6,291	7,853
Less: Restricted cash, included in Other assets, current and Other assets	39	71	21
Cash and cash equivalents, end of year	6,587	6,220	7,832
Supplemental Disclosure of Cash Flow Information:
Interest paid, net of amounts capitalized	1,464	1,263	1,339
Income taxes paid, net of refunds	$ 1,527	$ 2,400	$ 1,124