Condensed Consolidated Statement of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statement of Cash Flows [Abstract]
Net Income from operations	$ 14	$ 1,425
Adjustments to reconcile income from continuing operations to net cash flows provided by operating activities of continuing operations:
Depreciation and amortization	980	942
Deferred income tax provision	485	21
Stock compensation cost	87	64
Net periodic pension and other postretirement benefit	(136)	(120)
Change in:
Accounts receivable	(196)	(849)
Contract assets, current	220	215
Inventories	707	697
Other current assets	191	165
Accounts payable and accrued liabilities	(318)	(588)
Contract liabilities, current	353	371
Global pension contributions	39	32
Canadian Government Settlement	0	(38)
Other operating activities, net	(157)	317
Net cash flows provided by operating activities of continuing operations	661	1,500
Investing Activities of Continuing Operations:
Capital expenditures	412	363
Investments in businesses	5	19
Dispositions of businesses	0	133
Increase in customer financing assets	88	173
Increase in collaboration intangible assets	78	87
Payments (receipts) from settlements of derivative contracts	639	(92)
Other investing activities, net	61	(23)
Net cash flows used in investing activities of continuing operations	(1,283)	(394)
Financing Activities of Continuing Operations:
Proceeds from Issuance of Long-term Debt	17,207	32
Repayments of Long-term Debt	13,836	26
(Decrease) increase in short-term borrowings, net	(626)	(349)
Proceeds from Common Stock issued under employee stock plans	6	5
Dividends paid on Common Stock	614	609
Repurchase of Common Stock	47	29
Other financing activities, net	(68)	(101)
Net cash flows used in financing activities of continuing operations	1,362	(1,077)
Effect of Exchange Rate on Cash and Cash Equivalents [Abstract]
Effect of foreign exchange rate changes on cash and cash equivalents	(94)	41
Net increase in cash, cash equivalents and restricted cash	646	70
Cash and Cash Equivalents, beginning of year	7,420	6,212
Cash and Cash Equivalents, end of period	8,066	6,282
Restricted Cash	65	42
Cash and cash equivalents, end of period	8,001	6,240
Payment for Debt Extinguishment or Debt Prepayment Cost	$ 660	$ 0