Condensed Consolidated Balance Sheet - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Cash and cash equivalents	$ 7,476	$ 8,802
Accounts receivable, net	9,538	9,254
Contract assets	10,899	9,931
Inventory, net	9,426	9,411
Other assets, current	4,653	5,978
Total Current Assets	41,992	43,376
Customer financing assets	2,960	3,144
Fixed assets	27,116	26,346
Accumulated depreciation	(12,599)	(11,384)
Fixed assets, net	14,517	14,962
Operating lease right-of-use assets	1,876	1,880
Goodwill	53,789	54,285
Intangible assets, net	38,842	40,539
Other assets	4,796	3,967
Total Assets	158,772	162,153
Short-term borrowings	206	247
Accounts payable	8,667	8,639
Accrued employee compensation	2,756	3,006
Other accrued liabilities	9,685	10,517
Contract liabilities	12,543	12,889
Long-term debt currently due	274	550
Total Current Liabilities	34,131	35,848
Long-term debt	30,768	31,026
Operating lease liabilities, non-current	1,541	1,516
Future pension and postretirement benefit obligations	9,742	10,342
Other long-term liabilities	9,621	9,537
Total Liabilities	85,803	88,269
Commitments and contingencies (Note 17)
Redeemable noncontrolling interest	32	32
Common Stock	37,343	36,930
Treasury Stock	(12,398)	(10,407)
Retained earnings	50,343	49,423
Unearned ESOP Shares	(41)	(49)
Accumulated other comprehensive loss	(3,939)	(3,734)
Total Shareowners' Equity	71,308	72,163
Noncontrolling interest	1,629	1,689
Total Equity	72,937	73,852
Total Liabilities, Redeemable Noncontrolling Interest and Equity	$ 158,772	$ 162,153