Condensed Consolidated Statement of Cash Flows (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Operating Activities of Continuing Operations:
Income from continuing operations	$ 1,352	$ 1,264
Adjustments to reconcile income from continuing operations to net cash flows provided by operating activities of continuing operations:
Depreciation and amortization	444	318
Deferred income tax (benefit) provision	(40)	159
Stock compensation cost	70	47
Change in:
Accounts receivable	209	476
Inventories and contracts in progress	(746)	(721)
Other current assets	(56)	(13)
Accounts payable and accrued liabilities	395	69
Global pension contributions	(29)	(13)
Other operating activities, net	(190)	(263)
Net cash flows provided by operating activities of continuing operations	1,409	1,323
Investing Activities of Continuing Operations:
Capital expenditures	(295)	(187)
Investments in businesses	(24)	(72)
Dispositions of businesses	746	52
Decrease in customer financing assets, net	31	16
Increase in collaboration intangible assets	(157)	0
Other investing activities, net	38	81
Net cash flows provided by (used in) investing activities of continuing operations	339	(110)
Financing Activities of Continuing Operations:
Repayment of long-term debt, net	(46)	(63)
Decrease in short-term borrowings, net	(329)	(404)
Proceeds from Common Stock issued under employee stock plans	153	120
Dividends paid on Common Stock	(465)	(412)
Repurchase of Common Stock	(335)	0
Other financing activities, net	3	(78)
Net cash flows used in financing activities of continuing operations	(1,019)	(837)
Discontinued Operations:
Net cash used in operating activities	(715)	(21)
Net cash used in investing activities	(51)	(1)
Net cash used in financing activities	0	(2)
Net Cash used in discontinued operations	(766)	(24)
Effect of foreign exchange rate changes on cash and cash equivalents	(18)	50
Net (decrease) increase in cash and cash equivalents	(55)	402
Cash and cash equivalents, beginning of year	4,836	5,960
Cash and cash equivalents, end of period	4,781	6,362
Less: Cash and cash equivalents of businesses held for sale	14	77
Cash and cash equivalents of continuing operations, end of period	$ 4,767	$ 6,285