Condensed Consolidated Balance Sheet - USD ($) $ in Millions	Mar. 31, 2017	Dec. 31, 2016
Statement of Financial Position [Abstract]
Cash and cash equivalents	$ 7,156	$ 7,157
Accounts receivable, net	11,840	11,481
Inventories and contracts in progress, net	9,386	8,704
Other assets, current	923	1,208
Total Current Assets	29,305	28,550
Customer financing assets	1,593	1,398
Future income tax benefits	1,804	1,809
Fixed assets	19,892	19,469
Less: Accumulated depreciation	10,637	10,311
Fixed assets, net	9,255	9,158
Goodwill	27,273	27,059
Intangible assets, net	15,780	15,684
Other assets	5,363	6,048
Total Assets	90,373	89,706
Short-term borrowings	1,200	601
Accounts payable	7,520	7,483
Accrued liabilities	12,522	12,219
Long-term debt currently due	2,484	1,603
Total Current Liabilities	23,726	21,906
Long-term debt	20,898	21,697
Future pension and postretirement benefit obligations	5,433	5,612
Other long-term liabilities	10,737	11,026
Total Liabilities	60,794	60,241
Commitments and contingent liabilities (Note 15)
Redeemable noncontrolling interest	307	296
Common Stock	17,359	17,285
Treasury Stock	35,080	34,150
Retained earnings	53,741	52,873
Unearned ESOP shares	93	95
Accumulated other comprehensive loss	(8,333)	(8,334)
Total Shareowners' Equity	27,594	27,579
Noncontrolling interest	1,678	1,590
Total Equity	29,272	29,169
Total Liabilities and Equity	$ 90,373	$ 89,706