Condensed Consolidated Statement of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Operating Activities of Continuing Operations:
Net income from continuing operations	$ 1,261	$ 1,435
Adjustments to reconcile income from continuing operations to net cash flows provided by operating activities of continuing operations:
Depreciation and amortization	466	458
Deferred income tax provision	134	153
Stock compensation cost	48	46
Change in:
Accounts receivable	110	357
Inventories and contracts in progress	319	458
Other current assets	81	(5)
Accounts payable and accrued liabilities	(130)	537
Global pension contributions	75	45
Repayment of Canadian royalty obligation	(237)	0
Other operating activities, net	162	128
Net cash flows provided by operating activities of continuing operations	795	1,646
Investing Activities of Continuing Operations:
Capital expenditures	286	323
Investments in businesses	79	230
Dispositions of businesses	16	158
Decrease (increase) in customer financing assets, net	(22)	14
Increase in collaboration intangible assets	98	132
Receipts from settlements of derivative contracts	42	569
Other investing activities, net	100	(178)
Net cash flows used in investing activities of continuing operations	(483)	206
Financing Activities of Continuing Operations:
Issuance of long-term debt, net	2,324	9
Increase in short-term borrowings, net	306	2,177
Proceeds from Common Stock issued under employee stock plans	2	24
Dividends paid on Common Stock	509	553
Repurchase of Common Stock	0	3,000
Other financing activities, net	(85)	(40)
Net cash flows provided by (used) in financing activities	2,038	(1,383)
Discontinued Operations:
Net cash used in operating activities	(2,227)	(336)
Net cash used in investing activities	0	(33)
Net cash used in financing activities	0	(1)
Net cash flows used in discontinued operations	(2,227)	(370)
Effect of Exchange Rate on Cash and Cash Equivalents [Abstract]
Effect of foreign exchange rate changes on cash and cash equivalents	17	(53)
Net increase in cash and cash equivalents	140	46
Cash and Cash Equivalents, beginning of year	7,075	5,235
Cash and Cash Equivalents, end of period	7,215	5,281
Less: Cash and cash equivalents of businesses held for sale	0	7
Cash and cash equivalents, end of period	$ 7,215	$ 5,274