Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023		Mar. 31, 2022
Cash flows – operating activities:
Net loss	$ (425)		$ (1,242)
Non-cash items –
Share-based plans expense	222		203
Treasury shares issued for 401(k) contribution	553		329
Depreciation and amortization	457		486
Investment/asset impairment charges, net	11		72
Customer financing valuation adjustments	(1)		48
Gain on dispositions, net			(1)
Other charges and credits, net	34		175
Changes in assets and liabilities –
Accounts receivable	(341)		237
Unbilled receivables	(1,055)		(356)
Advances and progress billings	1,417		(522)
Inventories	(390)		(1,203)
Other current assets	82		140
Accounts payable	231		(369)
Accrued liabilities	(769)		(594)
Income taxes receivable, payable and deferred	(122)		(403)
Other long-term liabilities	(117)		96
Pension and other postretirement plans	(244)		(371)
Customer financing, net	101		18
Other	38		41
Net cash used by operating activities	(318)		(3,216)
Cash flows – investing activities:
Payments to acquire property, plant and equipment	(468)		(349)
Proceeds from disposals of property, plant and equipment	5		8
Contributions to investments	(3,561)		(1,732)
Proceeds from investments	2,203		5,037
Other	(2)		1
Net cash (used)/provided by investing activities	(1,823)		2,965
Cash flows – financing activities:
New borrowings	17		2
Debt repayments	(1,699)		(396)
Stock options exercised	44		30
Employee taxes on certain share-based payment arrangements	(42)		(32)
Net cash used by financing activities	(1,680)		(396)
Effect of exchange rate changes on cash and cash equivalents	10		(3)
Net decrease in cash & cash equivalents, including restricted	(3,811)		(650)
Cash & cash equivalents, including restricted, at beginning of year	14,647		8,104
Cash & cash equivalents, including restricted, at end of period	10,836		7,454
Less restricted cash & cash equivalents, included in Investments	24	[1]	45
Cash and cash equivalents at end of period	$ 10,812		$ 7,409

[1] Reflects amounts restricted in support of our property sales, workers’ compensation programs, and insurance premiums.