Condensed Consolidated Statement of Cash Flows Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021		Mar. 31, 2020
Cash flows - operation activities:
Net loss	$ (561)		$ (641)
Non-cash items -
Share-based plans expense	321		55
Treasury shares issued for 401(k) contribution	306
Depreciation and amortization	536		556
Investment/asset impairment charges, net	16		26
Gain on dispositions, net	(2)		(54)
Other charges and credits, net	35		97
Changes in assets and liabilities -
Accounts receivable	(394)		(54)
Unbilled receivables	(790)		(402)
Advances and progress billings	421		1,337
Inventories	680		2,973
Other current assets	153		328
Accounts payable	(819)		(1,030)
Accrued liabilities	(1,615)		(583)
Income taxes receivable, payable and deferred	(34)		(892)
Other long-term liabilities	(84)		(69)
Pension and other postretirement plans	(265)		(179)
Customer financing, net	46		23
Other	23		153
Net cash used by operating activities	(3,387)		(4,302)
Cash flows - investing activities:
Property, plant and equipment additions	(291)		(428)
Property, plant and equipment reductions	2		58
Contributions to investments	(9,688)		(244)
Proceeds from investments	12,738		227
Other	3		8
Net cash provided/(used) by investing activities	2,764		(379)
Cash flows - financing activities:
New borrowings	9,814		17,433
Debt repayments	(9,847)		(5,854)
Stock options exercised	23		21
Employee taxes on certain share-based payment arrangements	(38)		(162)
Dividends paid			(1,158)
Net cash (used)/provided by financing activities	(48)		10,280
Effect of exchange rate changes on cash and cash equivalents, including restricted	(18)		(47)
Net (decrease)/increase in cash & cash equivalents, including restricted	(689)		5,552
Cash & cash equivalents, including restricted, at beginning of year	7,835		9,571
Cash & cash equivalents, including restricted, at end of period	7,146		15,123
Restricted Cash and Cash Equivalents	(87)	[1]	(84)
Cash and cash equivalents at end of period	$ 7,059		$ 15,039

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