Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Cash flows – operating activities:
Net loss	$ (355)	$ (425)
Non-cash items –
Share-based plans expense	119	222
Treasury shares issued for 401(k) contribution	606	553
Depreciation and amortization	442	457
Investment/asset impairment charges, net	21	11
Other charges and credits, net	10	33
Changes in assets and liabilities –
Accounts receivable	(328)	(341)
Unbilled receivables	(1,357)	(1,055)
Advances and progress billings	2,718	1,417
Inventories	(3,778)	(390)
Other current assets	(249)	82
Accounts payable	(264)	231
Accrued liabilities	(666)	(769)
Income taxes receivable, payable and deferred	(59)	(122)
Other long-term liabilities	(83)	(117)
Pension and other postretirement plans	(261)	(244)
Financing receivables and operating lease equipment, net	79	101
Other	43	38
Net cash used by operating activities	(3,362)	(318)
Cash flows – investing activities:
Payments to acquire property, plant and equipment	(567)	(468)
Proceeds from disposals of property, plant and equipment	11	5
Contributions to investments	(243)	(3,561)
Proceeds from investments	2,907	2,203
Other	(34)	(2)
Net cash provided/(used) by investing activities	2,074	(1,823)
Cash flows – financing activities:
New borrowings	27	17
Debt repayments	(4,442)	(1,699)
Stock options exercised		44
Employee taxes on certain share-based payment arrangements	(65)	(42)
Other	18
Net cash used by financing activities	(4,462)	(1,680)
Effect of exchange rate changes on cash and cash equivalents	(28)	10
Net decrease in cash & cash equivalents, including restricted	(5,778)	(3,811)
Cash & cash equivalents, including restricted, at beginning of year	12,713	14,647
Cash & cash equivalents, including restricted, at end of period	6,935	10,836
Less restricted cash & cash equivalents, included in Investments	21	24
Cash and cash equivalents at end of period	$ 6,914	$ 10,812