Condensed Consolidated Statement of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Statement of Cash Flows [Abstract]
Net income from continuing operations	$ 1,126	$ 813
Adjustments to reconcile net income from continuing operations to net cash flows provided by operating activities:
Depreciation and amortization	1,014	1,123
Deferred income tax provision	(601)	153
Stock compensation cost	103	84
Net periodic pension and other postretirement income	(360)	(358)
Change in:
Accounts receivable	556	(799)
Contract assets	(219)	(311)
Inventory	(587)	(113)
Other current assets	(281)	(193)
Accounts payable and accrued liabilities	(316)	538
Contract liabilities	(50)	(56)
Other operating activities, net	91	(158)
Net cash flows provided by operating activities from continuing operations	476	723
Investing Activities:
Capital expenditures	(439)	(387)
Investments in businesses	0	(6)
Dispositions of businesses, net of cash transferred (Note 2)	35	1,049
Customer financing assets payments, net	(19)	(81)
Increase in collaboration intangible assets	(50)	(32)
(Payments) receipts from settlements of derivative contracts, net	(33)	49
Other investing activities, net	(12)	(10)
Net cash flows (used in) provided by investing activities from continuing operations	(518)	582
Financing Activities:
Repayment of long-term debt	0	(286)
Change in short-term borrowings, net	6	(13)
Dividends paid on Common Stock	(745)	(705)
Repurchase of Common Stock	(743)	(375)
Net transfers to discontinued operations	0	(5)
Other financing activities, net	(263)	(160)
Net cash flows used in financing activities from continuing operations	(1,745)	(1,544)
Discontinued Operations:
Net cash used in operating activities	0	(5)
Net cash used in investing activities	0	0
Net cash provided by financing activities	0	5
Net cash used in discontinued operations	0	0
Effect of foreign exchange rate changes on cash and cash equivalents	15	23
Net decrease in cash, cash equivalents and restricted cash	(1,772)	(216)
Cash, cash equivalents and restricted cash, beginning of period	7,853	8,832
Cash, cash equivalents and restricted cash, end of period	6,081	8,616
Less: Restricted cash, included in Other assets	41	37
Cash and cash equivalents, end of period	$ 6,040	$ 8,579