Condensed Consolidated Balance Sheet - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Statement of Financial Position [Abstract]
Cash and cash equivalents	$ 8,523	$ 7,157
Accounts receivable, net	13,128	11,481
Inventories and contracts in progress, net	10,083	8,704
Other assets, current	1,229	1,208
Total Current Assets	32,963	28,550
Customer financing assets	2,184	1,398
Future income tax benefits	1,723	1,809
Fixed assets	20,975	19,469
Less: Accumulated depreciation	11,212	10,311
Fixed assets, net	9,763	9,158
Goodwill	27,916	27,059
Intangible assets, net	15,955	15,684
Other assets	5,848	6,048
Total Assets	96,352	89,706
Short-term borrowings	1,077	601
Accounts payable	8,999	7,483
Accrued liabilities	13,053	12,219
Long-term debt currently due	2,120	1,603
Total Current Liabilities	25,249	21,906
Long-term debt	24,063	21,697
Future pension and postretirement benefit obligations	3,227	5,612
Other long-term liabilities	11,693	11,026
Total Liabilities	64,232	60,241
Commitments and contingent liabilities (Note 15)
Redeemable noncontrolling interest	429	296
Common Stock	17,486	17,285
Treasury Stock	35,575	34,150
Retained earnings	55,385	52,873
Unearned ESOP shares	88	95
Accumulated other comprehensive loss	(7,327)	(8,334)
Total Shareowners' Equity	29,881	27,579
Noncontrolling interest	1,810	1,590
Total Equity	31,691	29,169
Total Liabilities and Equity	$ 96,352	$ 89,706