Condensed Consolidated Statement of Cash Flows Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022		Mar. 31, 2021
Cash flows - operation activities:
Net loss	$ (1,242)		$ (561)
Non-cash items -
Share-based plans expense	203		321
Treasury shares issued for 401(k) contribution	329		306
Depreciation and amortization	486		536
Investment/asset impairment charges, net	72		16
Customer financing valuation adjustments	48
Gain on dispositions, net	(1)		(2)
Other charges and credits, net	175		35
Changes in assets and liabilities -
Accounts receivable	237		(394)
Unbilled receivables	(356)		(790)
Advances and progress billings	(522)		421
Inventories	1,203		680
Other current assets	140		153
Accounts payable	(369)		(819)
Accrued liabilities	(594)		(1,615)
Income taxes receivable, payable and deferred	(403)		(34)
Other long-term liabilities	96		(84)
Pension and other postretirement plans	(371)		(265)
Customer financing, net	18		46
Other	41		23
Net cash used by operating activities	(3,216)		(3,387)
Cash flows - investing activities:
Payments to acquire property, plant and equipment	(349)		(291)
Proceeds from disposals of property, plant and equipment	8		2
Contributions to investments	(1,732)		(9,688)
Proceeds from investments	5,037		12,738
Other	1		3
Net cash provided by investing activities	2,965		2,764
Cash flows - financing activities:
New borrowings	2		9,814
Debt repayments	(396)		(9,847)
Stock options exercised	30		23
Employee taxes on certain share-based payment arrangements	(32)		(38)
Net cash used by financing activities	(396)		(48)
Effect of exchange rate changes on cash and cash equivalents	(3)		(18)
Net decrease in cash & cash equivalents, including restricted	(650)		(689)
Cash & cash equivalents, including restricted, at beginning of year	8,104		7,835
Cash & cash equivalents, including restricted, at end of period	7,454		7,146
Restricted Cash and Cash Equivalents	(45)	[1]	(87)
Cash and cash equivalents at end of period	$ 7,409		$ 7,059

[1] Reflects amounts restricted in support of our property sales, workers’ compensation programs, and insurance premiums.Allowance for losses on available for sale debt instruments are assessed quarterly. All instruments are considered investment grade and, as such, we have not recognized an allowance for credit losses as of March 31, 2022.