Condensed Consolidated Balance Sheet - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Cash and cash equivalents	$ 8,051	$ 8,802
Accounts receivable, net	8,912	9,254
Contract assets	10,485	9,931
Inventory, net	9,548	9,411
Other assets, current	3,883	5,978
Total Current Assets	40,879	43,376
Customer financing assets	3,063	3,144
Fixed assets	26,959	26,346
Accumulated depreciation	(12,294)	(11,384)
Fixed assets, net	14,665	14,962
Operating lease right-of-use assets	1,900	1,880
Goodwill	54,394	54,285
Intangible assets, net	39,523	40,539
Other assets	4,414	3,967
Total Assets	158,838	162,153
Short-term borrowings	196	247
Accounts payable	8,043	8,639
Accrued employee compensation	2,233	3,006
Other accrued liabilities	10,361	10,517
Contract liabilities	12,591	12,889
Long-term debt currently due	1,370	550
Total Current Liabilities	34,794	35,848
Long-term debt	29,916	31,026
Operating lease liabilities, non-current	1,563	1,516
Future pension and postretirement benefit obligations	9,929	10,342
Other long-term liabilities	9,885	9,537
Total Liabilities	86,087	88,269
Commitments and contingencies (Note 17)
Redeemable noncontrolling interest	30	32
Common Stock	37,183	36,930
Treasury Stock	(11,424)	(10,407)
Retained earnings	48,954	49,423
Unearned ESOP Shares	(43)	(49)
Accumulated other comprehensive loss	(3,555)	(3,734)
Total Shareowners' Equity	71,115	72,163
Noncontrolling interest	1,606	1,689
Total Equity	72,721	73,852
Total Liabilities, Redeemable Noncontrolling Interest and Equity	$ 158,838	$ 162,153