Condensed Consolidated Statement of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Statement of Cash Flows [Abstract]
Net income from Continuing Operations	$ 2,780	$ 3,007
Adjustments to reconcile income from continuing operations to net cash flows provided by operating activities of continuing operations:
Depreciation and amortization	960	915
Deferred income tax provision	208	335
Stock compensation cost	96	92
Change in:
Accounts receivable	679	418
Inventories and contracts in progress	507	573
Other current assets	23	151
Accounts payable and accrued liabilities	572	419
Global pension contributions	107	70
Canadian Government Settlement	(237)	0
Other operating activities, net	492	534
Net cash flows provided by operating activities of continuing operations	2,571	3,022
Investing Activities of Continuing Operations:
Capital expenditures	649	654
Investments in businesses	538	256
Dispositions of businesses	50	166
Increase in customer financing assets, net	14	95
Increase in collaboration intangible assets	199	247
Receipts from settlements of derivative contracts	86	414
Other investing activities, net	78	(176)
Net cash flows used in investing activities of continuing operations	(1,342)	(496)
Financing Activities of Continuing Operations:
Issuance of long-term debt, net	2,322	2
(Decrease) increase in short-term borrowings, net	(178)	2,645
Proceeds from Common Stock issued under employee stock plans	5	26
Dividends paid on Common Stock	1,035	1,096
Repurchase of Common Stock	36	3,000
Other financing activities, net	(150)	(118)
Net cash flows provided by (used) in financing activities of continuing operations	928	(1,541)
Discontinued Operations:
Net cash used in operating activities	(2,463)	(174)
Net cash provided by (used in) investing activities	6	(60)
Net cash used in financing activities	0	(5)
Net cash flows used in discontinued operations	(2,457)	(239)
Effect of Exchange Rate on Cash and Cash Equivalents [Abstract]
Effect of foreign exchange rate changes on cash and cash equivalents	10	(48)
Net (decrease) increase in cash and cash equivalents	(290)	698
Cash and Cash Equivalents, beginning of year	7,075	5,235
Cash and Cash Equivalents, end of period	6,785	5,933
Less: Cash and cash equivalents of businesses held for sale	0	115
Cash and cash equivalents, end of period	$ 6,785	$ 5,818