Condensed Consolidated Balance Sheet - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Cash and cash equivalents	$ 11,068	$ 8,985
Accounts receivable, net	11,973	12,595
Contract with Customer, Asset, Net, Current	3,273	0
Inventories and contracts in progress, net	8,979	9,881
Other assets, current	1,263	1,397
Total Current Assets	36,556	32,858
Customer financing assets	2,763	2,372
Future income tax benefits	1,626	1,723
Fixed assets	21,597	21,364
Less: Accumulated depreciation	11,482	11,178
Fixed assets, net	10,115	10,186
Goodwill	27,699	27,910
Intangible assets, net	15,739	15,883
Other assets	7,071	5,988
Total Assets	101,569	96,920
Short-term borrowings	985	392
Accounts payable	9,623	9,579
Accrued liabilities	8,730	12,316
Contract with Customer, Liability, Current	5,652	0
Long-term debt currently due	78	2,104
Total Current Liabilities	25,068	24,391
Long-term debt	27,246	24,989
Future pension and postretirement benefit obligations	2,589	3,036
Other long-term liabilities	13,190	12,952
Total Liabilities	68,093	65,368
Commitments and contingent liabilities (Note 15)
Redeemable noncontrolling interest	130	131
Common Stock	17,747	17,574
Treasury Stock	35,645	35,596
Retained earnings	57,027	55,242
Unearned ESOP shares	81	85
Accumulated other comprehensive loss	(7,684)	(7,525)
Total Shareowners' Equity	31,364	29,610
Noncontrolling interest	1,982	1,811
Total Equity	33,346	31,421
Total Liabilities and Equity	$ 101,569	$ 96,920