The Boeing Company (BA) 10-K 1 Feb 21 2020 FY Annual report Financial data

Document And Entity Information

Document And Entity Information - USD ($) $ in Billions	12 Months Ended
	Dec. 31, 2020	Jan. 25, 2021	Jun. 30, 2020
Document and Entity Information [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2020
Document Transition Report	false
Entity File Number	1-442
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	91-0425694
Entity Address, Address Line One	100 N. Riverside Plaza,
Entity Address, City or Town	Chicago,
Entity Address, State or Province	IL
Entity Address, Postal Zip Code	60606-1596
City Area Code	(312)
Local Phone Number	544-2000
Title of 12(b) Security	Common Stock, $5.00 Par Value
Trading Symbol	BA
Security Exchange Name	NYSE
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float			$ 103.5
Entity Common Stock, Shares Outstanding		582,996,860
Amendment Flag	false
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY
Entity Registrant Name	BOEING CO
Entity Central Index Key	0000012927
Current Fiscal Year End Date	--12-31

Consolidated Statements Of Oper

Consolidated Statements Of Operations - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Condensed Income Statements, Captions [Line Items]
Total revenues	$ 58,158	$ 76,559	$ 101,127
Boeing Capital interest expense	(43)	(62)	(69)
Total costs and expenses	(63,843)	(72,093)	(81,490)
Gross profit	(5,685)	4,466	19,637
Income/(loss) from operating investments, net	9	(4)	111
General and administrative expense	(4,817)	(3,909)	(4,567)
Research and development expense, net	(2,476)	(3,219)	(3,269)
Gain/(loss) on dispositions, net	202	691	75
(Loss)/earnings from operations	(12,767)	(1,975)	11,987
Other income, net	447	438	92
Interest and debt expense	(2,156)	(722)	(475)
(Loss)/earnings before income taxes	(14,476)	(2,259)	11,604
Income tax benefit/(expense)	$ 2,535	$ 1,623	$ (1,144)
Basic (loss)/earnings per share	$ (20.88)	$ (1.12)	$ 18.05
Diluted earnings per share	$ (20.88)	$ (1.12)	$ 17.85
Net (loss)/earnings	$ (11,941)	$ (636)	$ 10,460
Net Income (Loss) Attributable to Noncontrolling Interest	(68)
Net (loss)/earnings attributable to Boeing Shareholders	(11,873)	(636)	10,460
Product [Member]
Condensed Income Statements, Captions [Line Items]
Total revenues	47,142	66,094	90,229
Cost of Goods and Services Sold	(54,568)	(62,877)	(72,922)
Service [Member]
Condensed Income Statements, Captions [Line Items]
Total revenues	11,016	10,465	10,898
Cost of Goods and Services Sold	$ (9,232)	$ (9,154)	$ (8,499)

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Net (loss)/earnings	$ (11,941)	$ (636)	$ 10,460
Currency translation adjustments	98	(27)	(86)
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax of ($1), $1, and ($5)		1	2
Derivative instruments:
Unrealized gain/(loss) arising during period, net of tax of ($4), $13, and $40	14	(48)	(146)
Reclassification adjustment for loss included in net earnings, net of tax of ($7), ($7), and ($8)	27	26	30
Total unrealized gain/(loss) on derivative instruments, net of tax	41	(22)	(116)
Defined benefit pension plans & other postretirement benefits:
Net actuarial (loss)/gain arising during the period, net of tax of $111, $405, and ($105)	(1,956)	(1,413)	384
Amortization of actuarial losses included in net periodic pension cost, net of tax of ($52), ($133), and ($242)	917	464	878
Settlements and curtailments included in net income, net of tax of $0, $0, and ($2)	5		8
Pension and postretirement benefit related to our equity method investments, net of tax $0, ($5), and ($6)		17	22
Amortization of prior service credits included in net periodic pension cost, net of tax of $6, $25, and $39	(112)	(89)	(143)
Prior service cost/(credit) arising during the period, net of tax of ($2), $0, and ($94)	27	(1)	341
Total defined benefit pension plans & other postretirement benefits, net of tax	(1,119)	(1,022)	1,490
Other comprehensive (loss)/income, net of tax	(980)	(1,070)	1,290
Comprehensive loss related to noncontrolling interests	(68)	(41)	(21)
Comprehensive (loss)/income, net of tax	(12,921)	(1,747)	11,729
Comprehensive (loss)/income attributable to Boeing Shareholders, net of tax	(12,853)	(1,706)	11,750
Other Comprehensive Income (Loss), Tax [Abstract]
Unrealized gain on certain investments, tax	0	0	(1)
Unrealized loss arising during period, tax	(4)	13	40
Reclassification adjustment for loss/(gain) included in net earnings, tax	(7)	(7)	(8)
Net actuarial gain/(loss) arising during the period, tax	111	405	(105)
Amortization of actuarial losses included in net periodic pension cost, tax	(52)	(133)	(242)
Settlements and curtailments included in net income, tax	0	0	(2)
Pension and post retirement benefits related to our equity method investments, tax	0	(5)	(6)
Amortization of prior service cost included in net periodic pension cost, tax	6	25	39
Prior service cost arising during the period, tax	$ (2)	$ 0	$ (94)

Consolidated Statements Of Fina

Consolidated Statements Of Financial Position - USD ($) $ in Millions		Dec. 31, 2020	Dec. 31, 2019
Assets
Other assets, accumulated amortization		$ 729	$ 580
Cash and cash equivalents		7,752	9,485
Short-term and other investments		17,838	545
Accounts receivable, net		1,955	3,266
Unbilled receivables, net		7,995	9,043
Current portion of customer financing, net		101	162
Inventories		81,715	76,622
Other current assets		4,286	3,106
Total current assets		121,642	102,229
Customer financing, net		1,936	2,136
Property, plant and equipment, net		11,820	12,502
Goodwill		8,081	8,060
Acquired intangible assets, net		2,843	3,338
Deferred income taxes		86	683
Investments		1,016	1,092
Other Assets, Noncurrent		4,712	3,585
Total assets		152,136	133,625
Liabilities and equity
Accounts payable		12,928	15,553
Accrued liabilities		22,171	22,868
Advances and progress billings		50,488	51,551
Short-term debt and current portion of long-term debt		1,693	7,340
Total current liabilities		87,280	97,312
Deferred income taxes		1,010	413
Accrued retiree health care		4,137	4,540
Accrued pension plan liability, net		14,408	16,276
Other long-term liabilities		1,486	3,422
Long-term debt		$ 61,890	$ 19,962
Shareholders' equity:
Common stock, par value		$ 5	$ 5
Common stock, authorized		1,200,000,000	1,200,000,000
Common stock, shares issued		1,012,261,159	1,012,261,159
Common Stock, Value, Issued		$ 5,061	$ 5,061
Additional paid-in capital		7,787	6,745
Treasury stock, at cost		(52,641)	(54,914)
Retained earnings		38,610	50,644
Accumulated other comprehensive loss	[1]	(17,133)	(16,153)
Total shareholders’ deficit		(18,316)	(8,617)
Noncontrolling interests		241	317
Total equity		(18,075)	(8,300)
Total liabilities and equity		152,136	133,625
Liabilities		$ 170,211	$ 141,925
[1]	Net of tax.

Consolidated Statements Of Cash

Consolidated Statements Of Cash Flows $ in Millions	12 Months Ended
	Dec. 31, 2020USD ($)		Dec. 31, 2019USD ($)		Dec. 31, 2018USD ($)
Cash flows - operation activities:
Net (loss)/earnings	$ (11,941)		$ (636)		$ 10,460
Non-cash items -
Share-based plans expense	250		212		202
Treasury shares issued for 401(k) contribution	195
Depreciation and amortization	2,246		2,271		2,114
Investment/asset impairment charges, net	410		443		93
Customer financing valuation adjustments	12		250		(3)
Gain/(loss) on dispositions, net	(202)		(691)		(75)
777X reach-forward loss	942		111		190
Other charges and credits, net	1,462		334		247
Changes in assets and liabilities –
Accounts receivable	909		603		(795)
Unbilled receivables	919		982		(1,826)
Advances and progress billings	(1,060)		737		2,636
Inventories	(11,002)		(12,391)		568
Other current assets	372		(682)		98
Accounts payable	(5,363)		1,600		2
Accrued liabilities	1,074		7,781		1,117
Income taxes receivable, payable and deferred	(2,576)		(2,476)		(180)
Other long-term liabilities	(222)		(621)		87
Pension and other postretirement plans	(794)		(777)		(153)
Customer financing, net	173		419		120
Other	235		196		610
Net cash (used)/provided by operating activities	(18,410)		(2,446)		15,322
Cash flows - investing activities:
Property, plant and equipment additions	(1,303)		(1,834)		(1,722)
Property, plant and equipment reductions	296		334		120
Acquisitions, net of cash acquired			(455)		(3,230)
Proceeds from dispositions			464
Contributions to investments	(37,616)		(1,658)		(2,607)
Proceeds from investments	20,275		1,759		2,898
Purchase of distribution rights			127		69
Other	(18)		(13)		(11)
Net cash used by investing activities	(18,366)		(1,530)		(4,621)
Cash flows - financing activities
New borrowings	47,248		25,389		8,548
Debt repayments	(10,998)		(12,171)		(7,183)
Contributions from noncontrolling interests			7		35
Stock options exercised	36		58		81
Employee taxes on certain share-based payment arrangements	(173)		(248)		(257)
Common shares repurchased			(2,651)		(9,000)
Dividends paid	(1,158)		(4,630)		(3,946)
Other			(15)
Net Cash Provided by (Used in) Financing Activities, Total	34,955		5,739		(11,722)
Effect of exchange rate changes on cash and cash equivalents	85		(5)		(53)
Net (decrease)/increase in cash & cash equivalents, including restricted	(1,736)		1,758		(1,074)
Cash & cash equivalents, including restricted, at beginning of year	9,571		7,813		8,887
Cash & cash equivalents, including restricted, at end of year	7,835		9,571		7,813
Less restricted cash & cash equivalents, included in Investments	(83)	[1]	(86)	[1]	(176)
Cash and cash equivalents at end of year	7,752		$ 9,485		$ 7,637
Airplane Program 777x [Member]
Non-cash items -
777X reach-forward loss	$ 6,493
[1]	Reflects amounts restricted in support of our workers’ compensation programs, employee benefit 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 December 31, 2020.

Consolidated Statements Of Equi

Consolidated Statements Of Equity - USD ($) $ in Millions	Total	Common Stock [Member]	Additional Paid-In Capital [Member]	Treasury Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]	Non-Controlling Interest [Member]	Less: Noncontrolling Interest not presented on Income Statement [Member]
Beginning Balance at Dec. 31, 2017	$ 1,713	$ 5,061	$ 6,804	$ (43,454)	$ 49,618	$ (16,373)	$ 57
Net (loss)/earnings attributable to Boeing Shareholders	10,460				10,460
Net Income (Loss) Attributable to Noncontrolling Interest
Net (loss)/earnings	10,460						(21)	$ 10,439
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	1,290					1,290
Share-based compensation and related dividend equivalents	202		238		(36)
Treasury shares issued for stock options exercised, net	(81)		(45)	(126)
Treasury shares issued for other share-based plans, net	(249)		(229)	(20)
Common shares repurchased	(9,000)			(9,000)
Dividends, Common Stock, Cash	(4,101)				(4,101)
Changes in noncontrolling interests	35						35
Ending Balance at Dec. 31, 2018	410	5,061	6,768	(52,348)	55,941	(15,083)	71
Other Comprehensive Income (Loss), Tax	$ 379
Cash dividends declared, per share	$ 7.19
Net (loss)/earnings attributable to Boeing Shareholders	$ (636)				(636)
Net Income (Loss) Attributable to Noncontrolling Interest
Net (loss)/earnings	(636)						(41)	(677)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(1,070)					(1,070)
Share-based compensation and related dividend equivalents	212		245		(33)
Treasury shares issued for stock options exercised, net	(57)		(47)	(104)
Treasury shares issued for other share-based plans, net	(240)		(221)	(19)
Common shares repurchased	(2,651)			(2,651)
Dividends, Common Stock, Cash	(4,628)				(4,628)
Changes in noncontrolling interests	287						287
Ending Balance at Dec. 31, 2019	(8,300)	5,061	6,745	(54,914)	50,644	(16,153)	317
Other Comprehensive Income (Loss), Tax	$ (298)
Cash dividends declared, per share	$ 8.22
Net (loss)/earnings attributable to Boeing Shareholders	$ (11,873)
Net Income (Loss) Attributable to Noncontrolling Interest	(68)						(68)
Net (loss)/earnings	(11,941)							$ (11,941)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(980)					(980)
Share-based compensation and related dividend equivalents	250		250
Treasury shares issued for stock options exercised, net	(37)		(26)	(63)
Treasury shares issued for other share-based plans, net	(167)		(214)	47
Treasury shares contributed to pension plans	3,000		952	2,048
Treasury shares issued for 401(k) contribution	195		80	115
Changes in noncontrolling interests	(8)						(8)
Other	1				1
Ending Balance at Dec. 31, 2020	(18,075)	$ 5,061	$ 7,787	$ (52,641)	$ 38,610	$ (17,133)	$ 241
Other Comprehensive Income (Loss), Tax	$ (52)

Summary of Business Segment Dat

Summary of Business Segment Data	12 Months Ended
	Dec. 31, 2020
Segment Reporting, Disclosure of Entity's Reportable Segments [Abstract]
Summary Of Business Segment Data	The Boeing Company and Subsidiaries Notes to the Consolidated Financial Statements Summary of Business Segment Data (Dollars in millions) Years ended December 31, 2020 2019 2018 Revenues: Commercial Airplanes $16,162 $32,255 $57,499 Defense, Space & Security 26,257 26,095 26,300 Global Services 15,543 18,468 17,056 Boeing Capital 261 244 274 Unallocated items, eliminations and other (65) (503) (2) Total revenues $58,158 $76,559 $101,127 (Loss)/earnings from operations: Commercial Airplanes ($13,847) ($6,657) $7,830 Defense, Space & Security 1,539 2,615 1,692 Global Services 450 2,697 2,536 Boeing Capital 63 28 79 Segment operating (loss)/earnings (11,795) (1,317) 12,137 Unallocated items, eliminations and other (2,355) (2,073) (1,477) FAS/CAS service cost adjustment 1,383 1,415 1,327 (Loss)/earnings from operations (12,767) (1,975) 11,987 Other income, net 447 438 92 Interest and debt expense (2,156) (722) (475) (Loss)/earnings before income taxes (14,476) (2,259) 11,604 Income tax benefit/(expense) 2,535 1,623 (1,144) Net (loss)/earnings (11,941) (636) 10,460 Less: net loss attributable to noncontrolling interest (68) Net (loss)/earnings attributable to Boeing Shareholders ($11,873) ($636) $10,460 This information is an integral part of the Notes to the Consolidated Financial Statements. See Note 22 for further segment results.

Summary Of Significant Accounti

Summary Of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2020
Accounting Policies [Abstract]
Summary Of Significant Accounting Policies	Summary of Significant Accounting Policies Principles of Consolidation and Basis of Presentation The Consolidated Financial Statements included in this report have been prepared by management of The Boeing Company (herein referred to as “Boeing,” the “Company,” “we,” “us,” or “our”). These statements include the accounts of all majority-owned subsidiaries and variable interest entities that are required to be consolidated. All significant intercompany accounts and transactions have been eliminated. As described in Note 22, we operate in four reportable segments: Commercial Airplanes (BCA); Defense, Space & Security (BDS), Global Services (BGS), and Boeing Capital (BCC). Effective at the beginning of 2020, certain programs were realigned between our BDS segment and Unallocated items, eliminations and other. Amounts in prior periods have been reclassified to conform to the current year presentation. Liquidity Matters The global outbreak of COVID-19 and the grounding of the 737 MAX airplane are having a significant adverse impact on our business and are expected to continue to negatively impact revenue, earnings and operating cash flow in future quarters. The COVID-19 pandemic has caused an unprecedented shock to demand for air travel, creating a tremendous challenge for our customers, our business and the entire aerospace manufacturing and services sector. We currently expect it will take approximately three years for travel to return to 2019 levels and a few years beyond that for the industry to return to long-term trend growth. There is significant uncertainty with respect to when commercial air traffic levels will recover, and whether and at what point capacity will return to and/or exceed pre-COVID-19 levels. During 2020, net cash used by operating activities was $18.4 billion, and we expect negative operating cash flows in future quarters until commercial deliveries ramp up. In the first quarter of 2020, we entered into and fully drew on a $13.8 billion two-year delayed draw term loan credit agreement (delayed draw term loan facility). In the second quarter of 2020, we issued $25 billion of fixed rate senior notes that mature between 2023 and 2060. In the fourth quarter of 2020, we issued $4.9 billion of fixed rate senior notes that mature between 2024 and 2031. As a result, our cash and short-term investment balance was $25.6 billion and our debt balance was $63.6 billion at December 31, 2020. The major credit rating agencies downgraded our short term and long term credit ratings during 2020, and there is risk for further downgrades. At December 31, 2020, our debt balance includes no commercial paper borrowings compared to $6.1 billion at December 31, 2019. In the current environment, we may have limited future access to the commercial paper market. In addition, we have term notes of $1.5 billion maturing in 2021. At December 31, 2020, trade payables included $3.8 billion payable to suppliers who have elected to participate in supply chain financing programs. While access to supply chain financing has been reduced due to our current credit ratings and debt levels, we do not believe that these or future changes in the availability of supply chain financing will have a significant impact on our liquidity. At December 31, 2020, we had $9.5 billion of unused borrowing capacity on revolving credit agreements. We anticipate that these credit lines will primarily serve as back-up liquidity to support our general corporate borrowing needs. Our borrowing capacity includes a $3.1 billion 364-day revolving credit facility, which is set to expire in October 2021. In addition to our debt issuances, we have taken a number of actions to improve liquidity. During the first quarter of 2020, our Board of Directors terminated its prior authorization to repurchase shares of the Company’s outstanding common stock and suspended the declaration and/or payment of dividends until further notice. We have also reduced production rates in our commercial business to reflect the impact of COVID-19 on the industry. We are executing on our plans to reduce our workforce through a combination of voluntary and involuntary layoffs and natural turnover. During 2020, we recorded severance costs for approximately 26,000 employees, of which approximately 18,000 have left the Company as of December 31, 2020, and the remainder are expected to leave in 2021. In the fourth quarter of 2020, we began using our common stock in lieu of cash to fund Company contributions to our 401(k) plans. In December 2020, we awarded most of our employees a one-time stock grant that will vest in three years in lieu of merit increases. We expect these actions to further enable the Company to conserve cash. We are also working with our customers and supply chain to accelerate receipts and conserve cash. For example, the United States Department of Defense (U.S. DoD) has taken steps to work with its industry partners to increase liquidity in the form of increased progress payment rates and reductions in withholds among other initiatives. We are also deferring certain tax payments pursuant to the Coronavirus Aid, Relief, and Economic Security (CARES) Act. We have reduced discretionary spending, including reducing or deferring research and development and capital expenditures. In July 2020, we announced our business transformation efforts to assess our business across five key pillars – infrastructure, overhead and organization, portfolio and investments, supply chain health and operational excellence. Within the infrastructure pillar we are assessing our overall facility requirements in light of reduced demand in our commercial businesses and remote and virtual work opportunities for large numbers of our workforce. We also anticipate a reduction in office space needs compared to our current capacity. However, as we consolidate our footprint, we may incur near term adverse impacts to earnings. The overhead and organization pillar is focused on our cost structure and how we are organized so we can right size our workforce and simplify and reduce management layers and bureaucracy. The portfolio and investments pillar includes aligning our portfolio and investments to focus on our core business and the changes in market conditions. The supply chain pillar is focused on supply chain health and stability, reducing indirect procurement spend and streamlining our transportation, logistics and warehousing approach. The operational excellence pillar is focused on improving performance, enhancing quality and reducing rework. These activities are not intended to constrain our capacity, but to enable the Company to emerge stronger and be more resilient when the market recovers. Based on our current best estimates of market demand, planned production rates, timing of cash receipts and expenditures, our ability to successfully implement further actions to improve liquidity as well as our ability to access additional liquidity, if needed, we believe it is probable that we will be able to fund our operations for the foreseeable future. Use of Estimates The preparation of financial statements in conformity with U.S. generally accepted accounting principles (GAAP) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. We believe that the accounting estimates and assumptions are appropriate given the increased uncertainties surrounding the severity and duration of the impacts of the COVID-19 pandemic, however actual results could differ from those estimates. Operating Cycle For classification of certain current assets and liabilities, we use the duration of the related contract or program as our operating cycle, which is generally longer than one year. Standards Issued and Implemented In the first quarter of 2020, we adopted ASU 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, using a modified retrospective method, which resulted in the recognition of allowances for credit losses on our Consolidated Statement of Financial Position as of January 1, 2020 and a $162 cumulative-effect adjustment to retained earnings to align our credit loss methodology with the new standard. The standard replaces the incurred loss impairment methodology under Topic 310 with a methodology that reflects expected credit losses and requires the use of a forward-looking expected credit loss model for accounts receivables, loans, and certain other financial assets. See Notes 5, 6, 9 and 14 for additional disclosures. In the first quarter of 2020, we also adopted ASU 2017-04, Intangibles-Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment. The standard simplifies the quantitative impairment test from a two-step process to a one-step process. The quantitative test is performed by comparing the carrying value of net assets to the estimated fair value of the related operations. If the fair value is determined to be less than carrying value, the shortfall up to the carrying value of the goodwill represents the amount of goodwill impairment. The standard continues to permit a company to test goodwill for impairment by performing a qualitative assessment or using the quantitative test. Revenue and Related Cost Recognition Commercial aircraft contracts The majority of our BCA segment revenue is derived from commercial aircraft contracts. For each contract, we determine the transaction price based on the consideration expected to be received. We allocate the transaction price to each commercial aircraft performance obligation based on relative standalone selling prices adjusted by an escalation formula as specified in the customer agreement. Revenue is recognized for each commercial aircraft performance obligation at the point in time when the aircraft is completed and accepted by the customer. We use program accounting to determine the amount reported as cost of sales. In certain situations, where an aircraft is still in our possession, and title and risk of loss has passed to the customer (known as a bill-and-hold arrangement), revenue will be recognized when all specific requirements for transfer of control under a bill-and-hold arrangement have been met. Payments for commercial aircraft sales are received in accordance with the customer agreement, which generally includes a deposit upon order and additional payments in accordance with a payment schedule, with the balance being due immediately prior to or at aircraft delivery. Advances and progress billings (contract liabilities) are normal and customary for commercial aircraft contracts and not considered a significant financing component as they are intended to protect us from the other party failing to adequately complete some or all of its obligations under the contract. Long-term contracts Substantially all contracts at BDS and certain contracts at BGS are long-term contracts with the U.S. government and other customers that generally extend over several years. Products sales under long-term contracts primarily include fighter jets, rotorcraft, cybersecurity products, surveillance suites, advanced weapons, missile defense, military derivative aircraft, satellite systems, and modification of commercial passenger aircraft to cargo freighters. Services sales under long-term contracts primarily include support and maintenance agreements associated with our commercial and defense products and space travel on Commercial Crew. For each long-term contract, we determine the transaction price based on the consideration expected to be received. We allocate the transaction price to each distinct performance obligation to deliver a good or service, or a collection of goods and/or services, based on the relative standalone selling prices. A long-term contract will typically represent a single distinct performance obligation due to the highly interdependent and interrelated nature of the underlying goods and/or services and the significant service of integration that we provide. While the scope and price on certain long-term contracts may be modified over their life, the transaction price is based on current rights and obligations under the contract and does not include potential modifications until they are agreed upon with the customer. When applicable, a cumulative adjustment or separate recognition for the additional scope and price may result. Long-term contracts can be negotiated with a fixed price or a price in which we are reimbursed for costs incurred plus an agreed upon profit. The Federal Acquisition Regulations provide guidance on the types of cost that will be reimbursed in establishing the price for contracts with the U.S. government. Certain long-term contracts include in the transaction price variable consideration, such as incentive and award fees, if specified targets are achieved. The amount included in the transaction price represents the expected value, based on a weighted probability, or the most likely amount. Long-term contract revenue is recognized over the contract term (over time) as the work progresses, either as products are produced or as services are rendered. We generally recognize revenue over time as we perform on long-term contracts because of continuous transfer of control to the customer. For U.S. government contracts, this continuous transfer of control to the customer is supported by clauses in the contract that allow the customer to unilaterally terminate the contract for convenience, pay us for costs incurred plus a reasonable profit and take control of any work in process. Similarly, for non-U.S. government contracts, the customer typically controls the work in process as evidenced either by contractual termination clauses or by our rights to payment of the transaction price associated with work performed to date on products or services that do not have an alternative use to the Company. The accounting for long-term contracts involves a judgmental process of estimating total sales, costs and profit for each performance obligation. Cost of sales is recognized as incurred. The amount reported as revenues is determined by adding a proportionate amount of the estimated profit to the amount reported as cost of sales. Recognizing revenue as costs are incurred provides an objective measure of progress on the long-term contract and thereby best depicts the extent of transfer of control to the customer. Changes in estimated revenues, cost of sales and the related effect on operating income are recognized using a cumulative catch-up adjustment which recognizes in the current period the cumulative effect of the changes on current and prior periods based on a long-term contract’s percentage-of-completion. When the current estimates of total sales and costs for a long-term contract indicate a loss, a provision for the entire reach-forward loss on the long-term contract is recognized. Net cumulative catch-up adjustments to prior years' revenue and earnings, including certain reach-forward losses, across all long-term contracts were as follows: 2020 2019 2018 (Decrease)/Increase to Revenue ($359) $54 $137 Increase to Loss/decrease to Earnings from operations ($942) ($111) ($190) Decrease to Diluted EPS ($1.37) ($0.06) ($0.29) Significant adjustments during the three years ended December 31, 2020 included reach-forward losses of $953, $148 and $736 on KC-46A Tanker recorded during 2020, 2019, and 2018, as well as reach-forward losses on Commercial Crew of $489 during 2019. Due to the significance of judgment in the estimation process, changes in underlying assumptions/estimates, supplier performance, or circumstances may adversely or positively affect financial performance in future periods. Payments under long-term contracts may be received before or after revenue is recognized. The U.S. government customer typically withholds payment of a small portion of the contract price until contract completion. Therefore, long-term contracts typically generate Unbilled receivables (contract assets) but may generate Advances and progress billings (contract liabilities). Long-term contract Unbilled receivables and Advances and progress billings are not considered a significant financing component because they are intended to protect either the customer or the Company in the event that some or all of the obligations under the contract are not completed. Commercial spare parts contracts Certain contracts at our BGS segment include sales of commercial spare parts. For each contract, we determine the transaction price based on the consideration expected to be received. The spare parts have discrete unit prices that represent fair value. We generally consider each spare part to be a separate performance obligation. Revenue is recognized for each commercial spare part performance obligation at the point in time of delivery to the customer. We may provide our customers with a right to return a commercial spare part where a customer may receive a full or partial refund, a credit applied to amounts owed, a different product in exchange, or any combination of these items. We consider the potential for customer returns in the estimated transaction price. The amount reported as cost of sales is recorded at average cost. Payments for commercial spare parts sales are typically received shortly after delivery. Other service revenue contracts Certain contracts at our BGS segment are for sales of services to commercial customers including maintenance, training, data analytics and information-based services. We recognize revenue for these service performance obligations over time as the services are rendered. The method of measuring progress (such as straight-line or billable amount) varies depending upon which method best depicts the transfer of control to the customer based on the type of service performed. Cost of sales is recorded as incurred. Concession Sharing Arrangements We account for sales concessions to our customers in consideration of their purchase of products and services as a reduction of the transaction price and the revenue that is recognized for the related performance obligations. The sales concessions incurred may be partially reimbursed by certain suppliers in accordance with concession sharing arrangements. We record these reimbursements, which are presumed to represent reductions in the price of the vendor’s products or services, as a reduction in Cost of products. Unbilled Receivables and Advances and Progress Billings Unbilled receivables (contract assets) arise when the Company recognizes revenue for amounts which cannot yet be billed under terms of the contract with the customer. Advances and progress billings (contract liabilities) arise when the Company receives payments from customers in advance of recognizing revenue. The amount of Unbilled receivables or Advances and progress billings is determined for each contract. Financial Services Revenue We record financial services revenue associated with sales-type/finance leases, operating leases, and notes receivable. Lease and financing revenue arrangements are included in Sales of services on the Consolidated Statements of Operations. For sales-type/finance leases, we record financing receivables at lease inception. A financing receivable is recorded at the aggregate of future minimum lease payments, estimated residual value of the leased equipment, and deferred incremental direct costs less unearned income. Income is recognized over the life of the lease to approximate a level rate of return on the net investment. Income recognition is generally suspended for financing receivables at the date full recovery of income and principal becomes not probable. Income is recognized when financing receivables become contractually current and performance is demonstrated by the customer . Residual values, which are reviewed periodically, represent the estimated amount we expect to receive at lease termination from the disposition of the leased equipment. Actual residual values realized could differ from these estimates. Declines in estimated residual value that are deemed other-than-temporary are recognized in the period in which the declines occur. For operating leases, revenue on leased aircraft and equipment is recorded on a straight-line basis over the term of the lease. Operating lease assets, included in Customer financing, are recorded at cost and depreciated over the period that we project we will hold the asset to an estimated residual value, using the straight-line method. We periodically review our estimates of residual value and recognize forecasted changes by prospectively adjusting depreciation expense. For notes receivable, notes are recorded net of any unamortized discounts and deferred incremental direct costs. Interest income and amortization of any discounts are recorded ratably over the related term of the note. Reinsurance Revenue Our wholly-owned insurance subsidiary, Astro Ltd., participates in a reinsurance pool for workers’ compensation. The member agreements and practices of the reinsurance pool minimize any participating members’ individual risk. Reinsurance revenues were $129, $151 and $145 during 2020, 2019 and 2018, respectively. Reinsurance costs related to premiums and claims paid to the reinsurance pool were $136, $150 and $136 during 2020, 2019 and 2018, respectively. Revenues and costs are presented net in Cost of sales in the Consolidated Statements of Operations. Fleet Support We provide assistance and support to facilitate efficient and safe aircraft operation to the operators of all our commercial airplane models. Collectively known as fleet support, these activities and support services include flight and maintenance training, field service support, engineering support, and technical data and documents. Fleet support activity begins prior to aircraft delivery as the customer receives training, manuals, and technical consulting support. This activity continues throughout the aircraft’s operational life. Services provided after delivery include field service support, consulting on maintenance, repair, and operational issues brought forth by the customer or regulators, updating manuals and engineering data, and the issuance of service bulletins that impact the entire model’s fleet. Field service support involves our personnel located at customer facilities providing and coordinating fleet support activities and requests. The costs for fleet support are expensed as incurred as Cost of services. Research and Development Research and development includes costs incurred for experimentation, design, and testing, as well as bid and proposal efforts related to government products and services which are expensed as incurred unless the costs are related to certain contractual arrangements with customers. Costs that are incurred pursuant to such contractual arrangements are recorded over the period that revenue is recognized, consistent with our contract accounting policy. We have certain research and development arrangements that meet the requirement for best efforts research and development accounting. Accordingly, the amounts funded by the customer are recognized as an offset to our research and development expense rather than as contract revenues. Research and development expense included bid and proposal costs of $224, $214 and $234 in 2020, 2019 and 2018, respectively. Share-Based Compensation We provide various forms of share-based compensation to our employees. For awards settled in shares, we measure compensation expense based on the grant-date fair value net of estimated forfeitures. For awards settled in cash, or that may be settled in cash, we measure compensation expense based on the fair value at each reporting date net of estimated forfeitures. The expense is recognized over the requisite service period, which is generally the vesting period of the award. Income Taxes Provisions for U.S. federal, state and local, and non-U.S. income taxes are calculated on reported (Loss)/earnings before income taxes based on current tax law and also include, in the current period, the cumulative effect of any changes in tax rates from those used previously in determining deferred tax assets and liabilities. Such provisions differ from the amounts currently receivable or payable because certain items of income and expense are recognized in different time periods for financial reporting purposes than for income tax purposes. Significant judgment is required in determining income tax provisions and evaluating tax positions. The accounting for uncertainty in income taxes requires a more-likely-than-not threshold for financial statement recognition and measurement of tax positions taken or expected to be taken in a tax return. We record a liability for the difference between the benefit recognized and measured for financial statement purposes and the tax position taken or expected to be taken on our tax return. To the extent that our assessment of such tax positions changes, the change in estimate is recorded in the period in which the determination is made. Tax-related interest and penalties are classified as a component of Income tax benefit/(expense). We also assess the likelihood that we will be able to recover our deferred tax assets against future sources of taxable income and reduce the carrying amounts of deferred tax assets by recording a valuation allowance if, based on the available evidence, it is more likely than not that all or a portion of such assets will not be realized. Changes in our estimates and judgments regarding realization of deferred tax assets may result in an increase or decrease to our tax expense and/or other comprehensive income, which would be recorded in the period in which the change occurs. Postretirement Plans Many of our employees have earned benefits under defined benefit pension plans. Nonunion and the majority of union employees that had participated in defined benefit pension plans transitioned to a company-funded defined contribution retirement savings plan in 2016. Additional union employees transitioned to company-funded defined contribution retirement savings plans effective January 1, 2019. We also provide postretirement benefit plans other than pensions, consisting principally of health care coverage to eligible retirees and qualifying dependents. Benefits under the pension and other postretirement benefit plans are generally based on age at retirement and years of service and, for some pension plans, benefits are also based on the employee’s annual earnings. The net periodic cost of our pension and other postretirement plans is determined using the projected unit credit method and several actuarial assumptions, the most significant of which are the discount rate, the long-term rate of asset return, and medical trend (rate of growth for medical costs). A portion of the service cost component of net periodic pension and other postretirement income or expense is not recognized in net earnings in the year incurred because it is allocated to production as product costs, and reflected in inventory at the end of a reporting period. Actuarial gains and losses, which occur when actual experience differs from actuarial assumptions, are reflected in Shareholders’ equity (net of taxes). If actuarial gains and losses exceed ten percent of the greater of plan assets or plan liabilities we amortize them over the average expected future lifetime of participants. The funded status of our pension and postretirement plans is reflected on the Consolidated Statements of Financial Position. Postemployment Plans We record a liability for postemployment benefits, such as severance or job training, when payment is probable, the amount is reasonably estimable, and the obligation relates to rights that have vested or accumulated. Environmental Remediation We are subject to federal and state requirements for protection of the environment, including those for discharge of hazardous materials and remediation of contaminated sites. We routinely assess, based on in-depth studies, expert analyses and legal reviews, our contingencies, obligations, and commitments for remediation of contaminated sites, including assessments of ranges and probabilities of recoveries from other responsible parties and/or insurance carriers. Our policy is to accrue and charge to current expense identified exposures related to environmental remediation sites when it is probable that a liability has been incurred and the amount can be reasonably estimated. The amount of the liability is based on our best estimate or the low end of a range of reasonably possible exposure for investigation, cleanup, and monitoring costs to be incurred. Estimated remediation costs are not discounted to present value as the timing of payments cannot be reasonably estimated. We may be able to recover a portion of the remediation costs from insurers or other third parties. Such recoveries are recorded when realization of the claim for recovery is deemed probable. Cash and Cash Equivalents Cash and cash equivalents consist of highly liquid instruments, such as commercial paper, time deposits, and other money market instruments, which have original maturities of three months or less. We aggregate our cash balances by bank where conditions for right of set-off are met, and reclassify any negative balances, consisting mainly of uncleared checks, to Accounts payable. Negative balances reclassified to Accounts payable were $74 and $101 at December 31, 2020 and 2019. Inventories Inventoried costs on commercial aircraft programs and long-term contracts include direct engineering, production and tooling and other non-recurring costs, and applicable overhead, which includes fringe benefits, production related indirect and plant management salaries and plant services, not in excess of estimated net realizable value. To the extent a material amount of such costs are related to an abnormal event or are fixed costs not appropriately attributable to our programs or contracts, they are expensed in the current period rather than inventoried. Inventoried costs include amounts relating to programs and contracts with long-term production cycles, a portion of which is not expected to be realized within one year. Included in inventory for federal government contracts is an allocation of allowable costs related to manufacturing process reengineering. Commercial aircraft programs inventory includes deferred production costs and supplier advances. Deferred production costs represent actual costs incurred for production of early units that exceed the estimated average cost of all units in the program accounting quantity. Higher production costs are experienced at the beginning of a new or derivative airplane program. Units produced early in a program require substantially more effort (labor and other resources) than units produced later in a program because of volume efficiencies and the effects of learning. We expect that these deferred costs will be fully recovered when all units included in the accounting quantity are delivered as the expected unit cost for later deliveries is below the estimated average cost of all units in the program. Supplier advances represent payments for parts we have contracted to receive from suppliers in the future. As parts are received, supplier advances are amortized to work in process. The determination of net realizable value of long-term contract costs is based upon quarterly reviews that estimate costs to be incurred to complete all contract requirements. When actual contract costs and the estimate to complete exceed total estimated contract revenues, a loss provision is recorded. The determination of net realizable value of commercial aircraft program costs is based upon quarterly program reviews that estimate revenue and cost to be incurred to complete the program accounting quantity. When estimated costs to complete exceed estimated program revenues to go, a program loss provision is recorded in the current period for the estimated loss on all undelivered units in the accounting quantity. Used aircraft purchased by the Commercial Airplanes segment and general stock materials are stated at cost not in excess of net realizable value. See ‘Aircraft Valuation’ within this Note for a discussion of our valuation of used aircraft. Spare parts inventory is stated at lower of average unit cost or net realizable value. We review our

Goodwill And Acquired Intangibl

Goodwill And Acquired Intangibles	12 Months Ended
	Dec. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Acquired Intangibles	Goodwill and Acquired Intangibles Effective at the beginning of 2020, certain programs were realigned between our BDS segment and Unallocated items, eliminations and other. Changes in the carrying amount of goodwill for the years ended December 31, 2020 and 2019 were as follows: Commercial Defense, Space & Security Global Services Other Total Balance at January 1, 2019 $1,241 $3,229 $3,345 $25 $7,840 KLX acquisition adjustments (51) (51) Acquisitions 72 188 62 322 Dispositions (49) (49) Goodwill adjustments (10) 8 (2) Balance at December 31, 2019 $1,313 $3,219 $3,441 $87 $8,060 Goodwill adjustments 3 5 13 21 Balance at December 31, 2020 $1,316 $3,224 $3,454 $87 $8,081 As of December 31, 2020 and 2019, we had indefinite-lived intangible assets with carrying amounts of $197 relating to trade names. During 2019, we recorded an impairment of $293 within Cost of Sales, as a result of our decision to retire the Aviall brand and trade name. As of December 31, 2020 and 2019, we had an indefinite-lived intangible asset with a carrying amount of $202 related to in process research and development for a next-generation air vehicle. The gross carrying amounts and accumulated amortization of our acquired finite-lived intangible assets were as follows at December 31: 2020 2019 Gross Accumulated Gross Accumulated Distribution rights $2,812 $1,427 $2,989 $1,262 Product know-how 553 384 553 354 Customer base 1,373 672 1,364 599 Developed technology 626 502 653 485 Other 303 238 280 200 Total $5,667 $3,223 $5,839 $2,900 During 2020, we recorded impairments of $178 within Cost of Sales related to our distribution rights, primarily driven by airlines' decisions to retire certain aircraft. Amortization expense for acquired finite-lived intangible assets for the years ended December 31, 2020 and 2019 was $317 and $331. Estimated amortization expense for the five succeeding years is as follows: 2021 2022 2023 2024 2025 Estimated amortization expense $284 $245 $234 $220 $196 During 2019, we acquired $563 of finite-lived intangible assets, of which $30 related to non-cash investing and financing transactions.

Earnings Per Share

Earnings Per Share	12 Months Ended
	Dec. 31, 2020
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share Basic and diluted earnings per share are computed using the two-class method, which is an earnings allocation method that determines earnings per share for common shares and participating securities. The undistributed earnings are allocated between common shares and participating securities as if all earnings had been distributed during the period. Participating securities and common shares have equal rights to undistributed earnings. Basic earnings per share is calculated by taking net earnings, less earnings available to participating securities, divided by the basic weighted average common shares outstanding. Diluted earnings per share is calculated by taking net earnings, less earnings available to participating securities, divided by the diluted weighted average common shares outstanding. The elements used in the computation of basic and diluted earnings per share were as follows: (In millions - except per share amounts) Years ended December 31, 2020 2019 2018 Net (loss)/earnings attributable to Boeing Shareholders ($11,873) ($636) $10,460 Less: earnings available to participating securities 7 Net (loss)/earnings available to common shareholders ($11,873) ($636) $10,453 Basic Basic weighted average shares outstanding 569.0 566.0 579.9 Less: participating securities 0.4 0.6 0.7 Basic weighted average common shares outstanding 568.6 565.4 579.2 Diluted Basic weighted average shares outstanding 569.0 566.0 579.9 Dilutive potential common shares (1) 6.3 Diluted weighted average shares outstanding 569.0 566.0 586.2 Less: participating securities 0.4 0.6 0.7 Diluted weighted average common shares outstanding 568.6 565.4 585.5 Net (loss)/earnings per share: Basic ($20.88) ($1.12) $18.05 Diluted (20.88) (1.12) 17.85 (1) Diluted (loss)/earnings per share includes any dilutive impact of stock options, restricted stock units, performance-based restricted stock units and performance awards. As a result of incurring a net loss for the years ended December 31, 2020 and 2019, potential common shares of 1.6 million and 4.1 million were excluded from diluted loss per share because the effect would have been antidilutive. In addition, the following table includes the number of shares that may be dilutive potential common shares in the future. These shares were not included in the computation of diluted (loss)/earnings per share because the effect was either antidilutive or the performance condition was not met. (Shares in millions) Years ended December 31, 2020 2019 2018 Performance awards 5.7 2.8 2.5 Performance-based restricted stock units 1.3 0.6 0.3 Restricted stock units 1.0

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The components of (Loss)/earnings before income taxes were: Years ended December 31, 2020 2019 2018 U.S. ($14,882) ($2,792) $11,166 Non-U.S. 406 533 438 Total ($14,476) ($2,259) $11,604 Income tax (benefit)/expense consisted of the following: Years ended December 31, 2020 2019 2018 Current tax (benefit)/expense U.S. federal ($3,968) ($308) $1,873 Non-U.S. 148 169 169 U.S. state 21 (161) 97 Total current (3,799) (300) 2,139 Deferred tax (benefit)/expense U.S. federal 652 (953) (996) Non-U.S. (3) (4) U.S. state 612 (367) 5 Total deferred 1,264 (1,323) (995) Total income tax (benefit)/expense ($2,535) ($1,623) $1,144 Net income tax payments were $37, $837 and $1,326 in 2020, 2019 and 2018, respectively. The following is a reconciliation of the U.S. federal statutory tax to actual income tax expense: Years ended December 31, 2020 2019 2018 Amount Rate Amount Rate Amount Rate U.S. federal statutory tax ($3,039) 21.0 % ($474) 21.0 % $2,437 21.0 % Valuation allowance 2,603 (18.0) 25 (1.1) 22 0.2 Impact of CARES Act (1) (1,175) 8.1 Audit settlements (2) (587) 4.1 (371) 16.4 (412) (3.6) Research and development credits (284) 2.0 (382) 16.9 (207) (1.8) Other provision adjustments 234 (1.7) 66 (3.0) 91 1.0 State income tax provision, net of effects on U.S. federal tax (168) 1.2 (45) 2.0 75 0.6 Excess tax benefits (3) (82) 0.6 (180) 8.0 (181) (1.6) Foreign derived intangible income (4) (31) 0.2 (229) 10.1 (549) (4.7) Tax deductible dividends (13) 0.1 (53) 2.4 (48) (0.4) Tax on non-US activities 7 (0.1) 20 (0.9) 27 0.2 Impact of Tax Cuts and Jobs Act (5) (111) (1.0) Income tax (benefit)/expense ($2,535) 17.5 % ($1,623) 71.8 % $1,144 9.9 % (1) On March 27, 2020, the Coronavirus Aid, Relief, and Economic Security (CARES) Act was enacted, which includes a five year net operating loss (NOL) carryback provision which enabled us to benefit from certain losses and re-measure certain deferred tax assets and liabilities at the former federal tax rate of 35%. In 2020, we recorded tax benefits of $1,175 related to the NOL carryback provision. (2) In the fourth quarter of 2020, we recorded a tax benefit of $587 related to the settlement of the 2015-2017 federal tax audit. In the fourth quarter of 2019, we recorded a tax benefit of $371 related to the settlement of state tax audits spanning 15 tax years. In the third quarter of 2018, we recorded a tax benefit of $412 related to the settlement of the 2013-2014 federal tax audit. (3) In 2020, 2019 and 2018, we recorded excess tax benefits related to employee share-based payments of $82, $180 and $181, respectively. (4) In 2020, 2019 and 2018, we recorded tax benefits related to foreign derived intangible income of $31, $229 and $549, respectively which effectively apply a lower U.S. tax rate to intangible income derived from serving non-U.S. markets. (5) During the fourth quarter of 2018 and in accordance with U.S. Securities and Exchange Commission Staff Accounting Bulletin No. 118, the Company completed its accounting for the provisional amounts recognized at December 31, 2017 and recorded an incremental benefit related to refinements to these provisional amounts which was not significant. Significant components of our deferred tax assets/(liabilities) at December 31 were as follows: 2020 2019 Inventory and long-term contract methods of income recognition ($4,313) ($6,048) Pension benefits 3,029 3,495 Fixed assets, intangibles and goodwill (1,645) (1,544) 737 MAX customer concessions and other considerations 1,253 1,626 Net operating loss, credit and capital loss carryovers (1) 1,182 696 Other postretirement benefit obligations 1,023 1,120 Other employee benefits 957 849 Accrued expenses and reserves 808 628 Customer and commercial financing (180) (268) Other 56 (166) Gross deferred tax assets/(liabilities) before valuation allowance $2,170 $388 Valuation allowance (3,094) (118) Net deferred tax assets/(liabilities) after valuation allowance ($924) $270 (1) Of the deferred tax asset for net operating loss and credit carryovers, $793 expires on or before December 31, 2040 and $389 may be carried over indefinitely. Net deferred tax assets/(liabilities) at December 31 were as follows: 2020 2019 Deferred tax assets $11,600 $10,722 Deferred tax liabilities (9,430) (10,334) Valuation allowance (3,094) (118) Net deferred tax assets/(liabilities) ($924) $270 The Company’s deferred income tax assets of $11,600 can be used in future years to offset taxable income and reduce income taxes payable. The Company’s deferred income tax liabilities of $9,430 will partially offset deferred income tax assets and result in higher taxable income in future years and increase income taxes payable. Tax law determines whether future reversals of temporary differences will result in taxable and deductible amounts that offset each other in future years. The particular years in which temporary differences result in taxable or deductible amounts generally are determined by the timing of the recovery of the related asset or settlement of the related liability. The deferred income tax assets and liabilities relate primarily to U.S. federal and state tax jurisdictions. From a U.S. federal tax perspective the Company does not have any significant net operating loss carryforwards nor does it have any significant federal tax credits that are at risk of expiring. The Company generated taxable income in 2018 and 2019 and expects to have a tax net operating loss in 2020 that will be carried back to prior years when the tax rate was 35% due to the CARES Act benefit as described above. During 2019 and 2020 the Company generated significant pre-tax losses and in the fourth quarter of 2020 the Company reached a three-year cumulative pre-tax loss position. We also normalized earnings and other comprehensive income for certain non-recurring items including certain 737 MAX expenses, an agreement with the Department of Justice, severance costs and remeasurement gains and losses from the annual remeasurement of pension and other postretirement benefit obligations. On a normalized basis the Company expects to reach a three-year cumulative loss position in 2021 as record earnings in 2018 are replaced by 2021 results. For purposes of assessing the recoverability of deferred tax assets, the Company determined that it could not include future projected earnings in the analysis due to recent history of losses. As of December 31, 2020 the Company has recorded valuation allowances of $3,094 primarily for certain federal deferred tax assets, state net operating loss carryforwards, and state tax credits. To measure the valuation allowance, the Company estimated in what year each of its deferred tax assets and liabilities would reverse using systematic and logical methods to determine the reversal patterns. Based on these methods, deferred tax liabilities are assumed to reverse and generate taxable income over the next 5 to 10 years while deferred tax assets related to pension and other postretirement benefit obligations are assumed to reverse and generate tax deductions over the next 15 to 20 years. The valuation allowance primarily results from not having sufficient income from deferred tax liability reversals in the appropriate future periods to support the realization of deferred tax assets. Because the pension and other postretirement benefit obligations are recorded to both continuing operations and other comprehensive income (OCI), the Company recorded a portion of the fourth quarter increase in the valuation allowance to income tax expense in continuing operations ($2,513) and a portion to OCI ($196). If the Company continues to generate losses and negative normalized earnings in future periods, additional valuation allowances may have to be recorded with corresponding adverse impacts on earnings and/or OCI. When income generation returns to more normal levels we can expect to see the allowance reverse and increase reported earnings and/or OCI. The TCJA one-time repatriation tax and Global Intangible Low Tax Income liabilities effectively taxed the undistributed earnings previously deferred from U.S. income taxes. We have not provided for foreign withholding tax on the undistributed earnings from our non-U.S. subsidiaries because such earnings are considered to be indefinitely reinvested. If such earnings were to be distributed, any foreign withholding tax would not be significant. As of December 31, 2020 and 2019, the amounts accrued for the payment of income tax-related interest and penalties included in the Consolidated Statements of Financial Position were not significant. The amounts of interest included in the Consolidated Statements of Operations were not significant for the years ended December 31, 2020, 2019 and 2018. A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows: 2020 2019 2018 Unrecognized tax benefits – January 1 $1,476 $2,412 $1,736 Gross increases – tax positions in prior periods 44 100 87 Gross decreases – tax positions in prior periods (581) (1,418) (410) Gross increases – current period tax positions 136 344 1,208 Gross decreases – current period tax positions (1) Settlements (109) 39 (206) Statute Lapse (3) Unrecognized tax benefits – December 31 $966 $1,476 $2,412 As of December 31, 2020, 2019 and 2018, the total amount of unrecognized tax benefits was $966, $1,476 and $2,412, respectively, of which $734, $1,287 and $1,405 would affect the effective tax rate, if recognized. As of December 31, 2020, these amounts are primarily associated with the amount of research tax credits claimed and uncertainties in the TCJA. Federal income tax audits have been settled for all years prior to 2018. The Internal Revenue Service (IRS) is expected to begin the 2018-2019 federal tax audit in the first quarter of 2021. We are also subject to examination in major state and international jurisdictions for the 2007-2019 tax years. We

Accounts Receivable

Accounts Receivable	12 Months Ended
	Dec. 31, 2020
Accounts Receivable, after Allowance for Credit Loss [Abstract]
Accounts Receivable	Accounts Receivable, net Accounts receivable at December 31 consisted of the following: 2020 2019 U.S. government contracts (1) $811 $1,121 Commercial Airplanes 17 29 Global Services (2) 1,437 1,967 Defense, Space, & Security (2) 120 220 Other 14 2 Less valuation allowance (444) (73) Total $1,955 $3,266 (1) Includes foreign military sales through the U.S. government (2) Excludes U.S. government contracts Our valuation allowance was increased from $73 to $138 on January 1, 2020 upon adoption of ASU 2016-13. See note 6. Accounts receivable expected to be collected after one year are not material.

Allowance for Losses on Financi

Allowance for Losses on Financial Assets	12 Months Ended
	Dec. 31, 2020
Credit Loss [Abstract]
Credit Loss, Financial Instrument	Allowances for Losses on Financial Assets Upon adoption of ASU 2016-13, we recorded a $162 cumulative-effect adjustment to retained earnings to increase our allowances for credit losses, resulting in a balance of $337 as of January 1, 2020. The change in allowances for expected credit losses for the year ended December 31, 2020 consisted of the following: Accounts receivable, net Unbilled receivables, net Other Current Assets, net Customer financing, net Other Assets, net Total Balance at January 1, 2020 ($138) ($81) ($38) ($5) ($75) ($337) Changes in estimates (314) (48) (34) (12) (66) (474) Write-offs 8 8 Recoveries 1 1 Balance at December 31, 2020 ($444) ($129) ($72) ($17) ($140) ($802)

Inventories

Inventories	12 Months Ended
	Dec. 31, 2020
Inventory Disclosure [Abstract]
Inventories	Inventories Inventories at December 31 consisted of the following: 2020 2019 Long-term contracts in progress $823 $1,187 Commercial aircraft programs 70,153 66,016 Commercial spare parts, used aircraft, general stock materials and other 10,739 9,419 Total $81,715 $76,622 Long-term contracts in progress includes Delta launch program inventory that is being sold at cost to United Launch Alliance (ULA) under an inventory supply agreement that terminates on March 31, 2021. The inventory balance was $17 and $176 at December 31, 2020 and 2019. See indemnifications to ULA in Note 14. Commercial spare parts, used aircraft, general stock materials and other includes capitalized precontract costs of $733 at December 31, 2020 and $711 at December 31, 2019 primarily related to KC-46A Tanker and Commercial Crew. See Note 13. Commercial Aircraft Programs The increase in commercial aircraft programs inventory during 2020 reflects the large number of undelivered aircraft due to the 737 MAX grounding, lower wide-body deliveries driven by the impacts of the COVID-19 pandemic and 787 production issues and associated rework, partially offset by a reach-forward loss of $6,493 on the 777X program. At December 31, 2020, commercial aircraft programs inventory includes approximately 425 undelivered 737 MAX aircraft and 80 undelivered 787 aircraft. We are currently remarketing certain aircraft and may have to remarket additional aircraft in future periods. If we are unable to successfully remarket the aircraft, determine further production rates reductions are necessary, and/or contract the program accounting quantities, future earnings may be reduced and/or additional reach-forward losses may have to be recorded. At December 31, 2020 and 2019, commercial aircraft programs inventory included the following amounts related to the 737 program: deferred production costs of $2,159 and $1,313 and unamortized tooling and other non-recurring costs of $480 and $521. At December 31, 2020, $2,560 of 737 deferred production costs, unamortized tooling and other non-recurring costs are expected to be recovered from units included in the program accounting quantity that have firm orders and $79 is expected to be recovered from units included in the program accounting quantity that represent expected future orders. At December 31, 2020 and 2019, commercial aircraft programs inventory included the following amounts related to the 777X program: unamortized tooling and other non-recurring costs of $3,295 and $2,914. During the fourth quarter of 2020 we determined that estimated costs to complete the 777X program plus costs already included in 777X inventory exceed estimated revenues from the program. The resulting reach-forward loss of $6,493 was recorded as a reduction to deferred production costs. As a result, 777X deferred production costs were immaterial at December 31, 2020. The level of profitability on the 777X program will be subject to a number of factors. These factors include continued market uncertainty, the impacts of COVID-19 on our production system as well as impacts on our supply chain and customers, further production rate adjustments for the 777X or other commercial aircraft programs, contraction of the accounting quantity and potential risks associated with the testing program and the timing of aircraft certification. One or more of these factors could result in additional reach-forward losses on the 777X program in future periods. At December 31, 2020 and 2019, commercial aircraft programs inventory included the following amounts related to the 787 program: deferred production costs of $14,976 and $18,716, $1,865 and $2,202 of supplier advances, and $1,863 and $2,092 of unamortized tooling and other non-recurring costs. At December 31, 2020, $12,165 of 787 deferred production costs, unamortized tooling and other non-recurring costs are expected to be recovered from units included in the program accounting quantity that have firm orders and $4,674 is expected to be recovered from units included in the program accounting quantity that represent expected future orders. Commercial aircraft programs inventory included amounts credited in cash or other consideration (early issue sales consideration) to airline customers totaling $2,992 and $2,863 at December 31, 2020 and 2019.

Contracts with Customers Contra

Contracts with Customers Contracts with Customers	12 Months Ended
	Dec. 31, 2020
Contracts with Customers [Abstract]
Long-term Contracts or Programs Disclosure	Contracts with Customers Unbilled receivables decreased from $9,043 at December 31, 2019 to $7,995 at December 31, 2020, primarily driven by an increase in billings at BDS and BGS, as well as an increase in allowances for expected credit losses at BGS. Advances and progress billings decreased from $51,551 at December 31, 2019 to $50,488 at December 31, 2020, primarily driven by revenue recognized in excess of advances on orders received and return of BCA customer advances, partially offset by advances on orders received at BCA, BDS, and BGS. Revenues recognized for the years ended December 31, 2020 and 2019 from amounts recorded as Advances and progress billings at the beginning of each year were $10,360 and $16,778. Certain commercial airplane customers are experiencing liquidity issues and seeking additional capital. Should these customers fail to address their liquidity issues, accounts receivable, unbilled receivables and certain inventory could become impaired. In addition we would have to remove contracts related to these customers from backlog and remarket any undelivered aircraft. The following table summarizes our contract assets under long-term contracts that were unbillable or related to outstanding claims as of December 31: Unbilled Claims 2020 2019 2020 2019 Current $5,628 $6,931 $9 Expected to be collected after one year 2,496 2,112 18 14 Less valuation allowance (1) (129) Total $7,995 $9,043 $18 $23 (1) In the first quarter of 2020, we adopted ASU 2016-13, refer to Note 6. Unbilled receivables related to commercial customer incentives expected to be collected after one year were $178 and $211 at December 31, 2020 and 2019. Unbilled receivables related to claims are items that we believe are earned, but are subject to uncertainty concerning their determination or ultimate realization.

Customer Financing

Customer Financing	12 Months Ended
	Dec. 31, 2020
Customer Financing [Abstract]
Customer Financing	Customer Financing Customer financing primarily relates to our BCC segment. Customer financing consisted of the following at December 31: 2020 2019 Financing receivables: Investment in sales-type/finance leases $919 $1,029 Notes 420 443 Total financing receivables 1,339 1,472 Operating lease equipment, at cost, less accumulated depreciation of $209 and $235 715 834 Gross customer financing 2,054 2,306 Less allowance for losses on receivables (17) (8) Total $2,037 $2,298 We acquire aircraft to be leased to customers through trades, lease returns, purchases in the secondary market, and new aircraft transferred from our BCA segment. Leasing arrangements typically range in terms from 1 to 12 years and may include options to extend or terminate the lease. Certain leases include provisions to allow the lessee to purchase the underlying aircraft at a specified price. A minority of leases contain variable lease payments based on actual aircraft usage and are paid in arrears. The components of investment in sales-type/finance leases at December 31 were as follows: 2020 2019 Minimum lease payments receivable $756 $799 Estimated residual value of leased assets 299 393 Unearned income (136) (163) Total $919 $1,029 Operating lease equipment primarily includes large commercial jet aircraft. Financing receivable balances evaluated for impairment at December 31 were as follows: 2020 2019 Individually evaluated for impairment $391 $400 Collectively evaluated for impairment 948 1,072 Total financing receivables $1,339 $1,472 We determine a receivable is impaired when, based on current information and events, it is probable that we will be unable to collect amounts due according to the original contractual terms. At December 31, 2020 and 2019, we individually evaluated for impairment customer financing receivables of $391 and $400, of which $380 and $388 were determined to be impaired. We recorded no allowance for losses on these impaired receivables as the collateral values exceeded the carrying values of the receivables. We determine a receivable is past due when cash has not been received upon the due date specified in the contract. There were no past due customer financing receivables as of December 31, 2020. We evaluate the collectability of customer financing receivables at commencement and on a recurring basis. If a customer financing receivable is deemed uncollectible, the customer is categorized as non-accrual status. When a customer is in non-accrual status at commencement, sales-type lease revenue is deferred until substantially all cash has been received or the customer is removed from non-accrual status. If a customer status changes to non-accrual after commencement or is a direct finance lease and sufficient collateral is available, we recognize contractual interest income as payments are received to the extent payments exceed past due principal payments. If there is not sufficient collateral, then revenue is not recognized until payments exceed the principal balance. Receivables in non-accrual status as of December 31, 2020 and December 31, 2019 were $380 and $388. Interest income received for the twelve and three months ended December 31, 2020 was $34 and $8. The adequacy of the allowance for losses is assessed quarterly. Four primary factors influencing the level of our allowance for losses on customer financing receivables are customer credit ratings, default rates, expected loss rate and collateral values, which may be adversely affected by impacts that COVID-19 has on our customers. We assign internal credit ratings for all customers and determine the creditworthiness of each customer based upon publicly available information and information obtained directly from our customers. Our rating categories are comparable to those used by the major credit rating agencies. Our allowance for losses on receivables decreased from $8 to $5 on January 1, 2020 upon adoption of ASU 2016-13. See Note 6 – Allowances for Losses on Financial Assets. Our financing receivable balances at December 31 by internal credit rating category and year of origination consisted of the following: Rating categories Current 2019 2018 2017 2016 Prior Total BBB $307 $307 BB $135 $49 $15 143 342 B $52 167 219 CCC 7 33 242 $177 12 471 Total carrying value of financing receivables $142 $82 $15 $294 $177 $629 $1,339 At December 31, 2020, our allowance related to receivables with ratings of CCC, B, BB and BBB. We applied default rates that averaged 26.0%, 7.4%, 3.0% and 0.2%, respectively, to the exposure associated with those receivables. Customer Financing Exposure Customer financing is collateralized by security in the related asset. The value of the collateral is closely tied to commercial airline performance and overall market conditions and may be subject to reduced valuation with market decline. Certain collateral values are being adversely impacted by the changes in market conditions driven by the COVID-19 pandemic. Declines in collateral values could result in asset impairments, reduced finance lease income, and an increase in the allowance for losses. Our customer financing collateral is concentrated in out-of-production aircraft and 747-8 aircraft. Generally, out-of-production aircraft have experienced greater collateral value declines than in-production aircraft. The majority of customer financing carrying values are concentrated in the following aircraft models at December 31: 2020 2019 717 Aircraft ($98 and $124 accounted for as operating leases) $637 $736 747-8 Aircraft ($121 and $130 accounted for as operating leases) 480 475 737 Aircraft ($214 and $240 Accounted for as operating leases) 235 263 777 Aircraft ($216 and $236 accounted for as operating leases) 225 240 MD-80 Aircraft (Accounted for as sales-type finance leases) 167 186 757 Aircraft ($4 and $22 accounted for as operating leases) 147 182 747-400 Aircraft ($19 and $31 Accounted for as operating leases) 71 90 Charges related to customer financing asset impairment for the years ended December 31 were as follows: 2020 2019 2018 Boeing Capital $32 $53 $1 Other Boeing (8) 217 38 Total $24 $270 $39 Lease income recorded in Revenue on the Consolidated Statements of Operations for the years ended December 31, 2020 and 2019 included $57 and $62 from sales-type/finance leases, and $118 and $139 from operating leases, of which $9 and $8 related to variable operating lease payments. As of December 31, 2020, undiscounted cash flows for notes receivable, sales-type/finance and operating leases over the next five years and thereafter are as follows: Notes receivable Sales-type/finance leases Operating leases Year 1 $149 $164 $85 Year 2 53 150 75 Year 3 34 141 72 Year 4 18 121 56 Year 5 19 83 34 Thereafter 147 97 66 Total lease receipts 420 756 388 Less imputed interest (136) Estimated unguaranteed residual values 299 Total $420 $919 $388

Property, Plant And Equipment

Property, Plant And Equipment	12 Months Ended
	Dec. 31, 2020
Property, Plant and Equipment [Abstract]
Property, Plant And Equipment	Property, Plant and Equipment Property, plant and equipment at December 31 consisted of the following: 2020 2019 Land $512 $527 Buildings and land improvements 14,415 14,288 Machinery and equipment 16,060 15,723 Construction in progress 1,340 1,306 Gross property, plant and equipment 32,327 31,844 Less accumulated depreciation (20,507) (19,342) Total $11,820 $12,502 Depreciation expense was $1,533, $1,567 and $1,556 for the years ended December 31, 2020, 2019 and 2018, respectively. Interest capitalized during the years ended December 31, 2020, 2019 and 2018 totaled $81, $83 and $81, respectively. During 2020 and 2019, we acquired $47 and $128 of property, plant and equipment through non-cash investing and financing transactions. Accounts payable related to purchases of property, plant and equipment were $182 and $256 for the years ended December 31, 2020 and 2019.

Investments

Investments	12 Months Ended
	Dec. 31, 2020
Investments [Abstract]
Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure	Investments Our investments, which are recorded in Short-term and other investments or Investments, consisted of the following at December 31: 2020 2019 Equity method investments (1) $936 $1,031 Time deposits 17,154 50 Available for sale debt instruments 596 405 Equity and other investments 85 65 Restricted cash & cash equivalents (2) 83 86 Total $18,854 $1,637 (1) Dividends received were $149 and $164 during 2020 and 2019. Retained earnings at December 31, 2020 include undistributed earnings from our equity method investments of $148. (2) Reflects amounts restricted in support of our workers’ compensation programs, employee benefit 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 December 31, 2020. Equity Method Investments Our equity method investments consisted of the following as of December 31: Segment Ownership Percentages Investment Balance 2020 2019 United Launch Alliance BDS 50% $735 $771 Other BCA, BDS, BGS and Other 201 260 Total equity method investments $936 $1,031

Leases

Leases	12 Months Ended
	Dec. 31, 2020
Leases [Abstract]
Lessee, Operating Leases	Leases Our operating lease assets primarily represent manufacturing and research and development facilities, warehouses, and offices. Total operating lease expense was $360 and $326 for the years ended December 31, 2020 and 2019, of which $71 and $55 was attributable to variable lease expenses. For the years ended December 31, 2020 and 2019, cash payments against operating lease liabilities totaled $299 and $277 and non-cash transactions totaled $371 and $371 to recognize operating assets and liabilities for new leases. Supplemental Consolidated Statement of Financial Position information related to leases consisted of the following at December 31: 2020 2019 Operating leases: Operating lease right-of-use assets $1,252 $1,182 Current portion of lease liabilities 268 252 Non-current portion of lease liabilities 1,084 978 Total operating lease liabilities $1,352 $1,230 Weighted average remaining lease term (years) 9 9 Weighted average discount rate 3.43% 3.35% Maturities of operating lease liabilities for the next five years are as follows: Operating leases 2021 $307 2022 241 2023 191 2024 135 2025 105 Thereafter 802 Total lease payments 1,781 Less imputed interest (429) Total $1,352 As of December 31, 2020, we have entered into a lease that has not yet commenced of $226, for a maintenance, repair and overhaul hangar that will support military aircraft programs. This lease will commence in 2023 with a lease term of 25 years.

Liabilities, Commitments And Co

Liabilities, Commitments And Contingencies	12 Months Ended
	Dec. 31, 2020
Commitments and Contingencies Disclosure [Abstract]
Liabilities, Commitments And Contingencies	Liabilities, Commitments and Contingencies Accrued Liabilities Accrued liabilities at December 31 consisted of the following: 2020 2019 Accrued compensation and employee benefit costs $7,121 $5,582 737 MAX customer concessions and other considerations 5,537 7,389 Department of Justice agreement liability 744 Environmental 565 570 Product warranties 1,527 1,267 Forward loss recognition 1,913 1,681 Dividends payable 1,159 Income taxes payable 43 670 Current portion of lease liabilities 268 252 Other 4,453 4,298 Total $22,171 $22,868 737 MAX Grounding and COVID-19 Impacts In 2019, following two fatal 737 MAX accidents, the Federal Aviation Administration (FAA) and non-U.S. civil aviation authorities issued orders suspending commercial operations of 737 MAX aircraft. Deliveries of the 737 MAX were suspended following these orders. Deliveries in the U.S. resumed in late 2020 following rescission by the FAA of its grounding order. Multiple legal actions have been filed against us as a result of the accidents. In addition, we are fully cooperating with U.S. government investigations related to the accidents and the 737 MAX program, including an investigation by the Securities and Exchange Commission, the outcome of which may be material. Other than as described below with respect to the U.S. Department of Justice, we cannot reasonably estimate a range of loss, if any, not covered by available insurance that may result given the current status of the lawsuits, investigations and inquiries related to the 737 MAX. On January 6, 2021, we entered into a Deferred Prosecution Agreement with the U.S. Department of Justice that resolves the Department of Justice’s previously disclosed investigation into us regarding the evaluation of the 737 MAX airplane by the FAA. Under the terms of the Deferred Prosecution Agreement, we agreed to the filing of a criminal information charging the Company with one count of conspiracy to defraud the United States, based on the conduct of two former 737 MAX program technical pilots; the criminal information will be dismissed after three years, provided that we comply with our obligations under the agreement. The Deferred Prosecution Agreement requires that we make payments totaling $2.51 billion, which consist of (a) a $243.6 million criminal monetary penalty; (b) $500 million in additional compensation to the heirs and/or beneficiaries of those who died in the Lion Air Flight 610 and Ethiopian Airlines Flight 302 accidents; and (c) $1.77 billion to the Company’s airline customers for harm incurred as a result of the grounding of the 737 MAX, offset in part by payments already made and the remainder satisfied through payments to be made prior to the termination of the Deferred Prosecution Agreement. The agreement also requires that we review our compliance program and undertake continuous improvement efforts with respect to it, and implement enhanced compliance reporting and internal controls mechanisms. Of the payments described above, $1.77 billion has been included in amounts reserved in prior quarters for 737 MAX customer considerations. We expensed $743.6 million in the fourth quarter of 2020 related to this agreement. During the fourth quarter of 2020, the FAA rescinded the order that grounded 737 MAX aircraft and issued an Airworthiness Directive specifying requirements that must be met before U.S. carriers can resume service, including installing software enhancements, completing wire separation modification, conducting pilot training and performing maintenance steps to prepare parked aircraft to fly again. The FAA also issued a Continued Airworthiness Notification to the International Community, and published the 737 MAX training requirements. The FAA must approve 737 MAX pilot training program revisions for each U.S. airline operating the aircraft and has indicated its intent to retain its authority to issue airworthiness certificates and export certificates of airworthiness for all new 737 MAX aircraft manufactured subsequent to the grounding order. The Brazilian National Civil Aviation Agency approved return of operations in the fourth quarter of 2020, and Transport Canada and the European Union Aviation Safety Agency (EASA) approved return of operations in the first quarter of 2021. In December 2020, we delivered 27 aircraft, in compliance with the FAA regulatory requirements described above. We have assumed that the remaining non-U.S. regulatory approvals will occur and enable deliveries during the first half of 2021. We have approximately 425 airplanes in inventory as of December 31, 2020. A number of customers have requested to defer deliveries or to cancel orders for 737 MAX aircraft, and we are remarketing and/or delaying deliveries of certain aircraft included within inventory. We now expect to deliver about half of the 737 MAX aircraft in inventory by the end of 2021. In the event that we are unable to resume aircraft deliveries in non-U.S. jurisdictions consistent with our assumptions of regulatory approval timing, our expectation of delivery timing could be impacted. Due to the grounding and associated suspension of 737 MAX deliveries, we temporarily suspended 737 MAX production beginning in January 2020. We resumed early stages of 737 MAX production in May 2020 and continued to produce at low rates through the end of 2020. In addition, we reduced the number of aircraft included in the accounting quantity by 400 units in the first quarter of 2020 as a result of reductions to planned production rates due to COVID-19 driven market uncertainties. As we are producing at abnormally low production rates in 2020 and 2021, we expect to incur approximately $5 billion of abnormal production costs that are being expensed as incurred. The slowdown in the planned production rate ramp-up increased expected abnormal costs, however this increase was offset by adjustments to the determination of the normal production level due to COVID-19 impacts on customer demand, as well as cost reduction activities, including significant reductions in employment levels. We expensed $2,567 of abnormal production costs during the year ended December 31, 2020. In addition to impacts related to the 737 MAX accidents and subsequent grounding, the 737 program continues to be significantly impacted by the COVID-19 pandemic and its effect on aircraft demand. These impacts have resulted in lower production and delivery rate assumptions. We currently expect to gradually increase the production rate to 31 per month by early 2022. We currently assume that we will implement further gradual production rate increases in subsequent periods based on market demand. The ongoing impacts of COVID-19 on market demand have also created significant uncertainty around the timing of deliveries of 737 MAX aircraft in inventory. We may need to recognize additional costs associated with remarketing and/or reconfiguring aircraft in inventory, which may reduce revenue and/or earnings in future periods. We have also recorded additional expenses of $416 and $328 due to the 737 MAX grounding during 2020 and 2019, which include costs related to storage, inventory impairment, pilot training, and software updates. The following table summarizes changes in the 737 MAX customer concessions and other considerations liability during 2020. 2020 2019 Beginning balance – January 1 $7,389 Initial liability recorded in the second quarter of 2019 $6,110 Reductions for payments made (2,188) (1,237) Reductions for concessions and other in-kind considerations (162) (133) Changes in estimates 498 2,649 Ending balance – December 31 $5,537 $7,389 We are working with our customers to minimize the impact to their operations from grounded and undelivered aircraft. We continue to reassess the liability for estimated potential concessions and other considerations to customers on a quarterly basis. This reassessment includes updating estimates to reflect revisions to return to service, delivery and production rate assumptions driven by timing of regulatory approvals, as well as latest information based on engagements with 737 MAX customers. The liability represents our current best estimate of future concessions and other considerations to customers, and is necessarily based on a series of assumptions. It is subject to change in future quarters as negotiations with customers mature and timing and conditions of return to service are better understood. The liability balance of $5.5 billion at December 31, 2020 includes $2.3 billion expected to be liquidated by lower customer delivery payments, $0.6 billion expected to be paid in cash and $0.1 billion in other concessions. Of the cash payments to customers, we expect to pay $0.3 billion in 2021 and $0.3 billion in 2022. The type of consideration to be provided for the remaining $2.5 billion will depend on the outcomes of negotiations with customers. The 737 MAX remains grounded in certain non-U.S. jurisdictions. The civil aviation authorities in those jurisdictions will determine the timing and conditions of return to service. Our assumptions reflect our current best estimate, but actual timing and conditions of return to service and resumption of deliveries could differ from this estimate, the effect of which could be material. We are unable at this time to reasonably estimate potential future additional financial impacts or a range of loss, if any, due to continued uncertainties related to the timing and conditions of return to service, uncertainties related to the impacts of COVID-19 on our operations, supply chain and customers, future changes to the production rate, supply chain impacts, and/or the results of negotiations with particular customers. Any such impacts, including any changes in our estimates, could have a material adverse effect on our financial position, results of operations, and/or cash flows. For example, we expect that, in the event that we are unable to resume aircraft deliveries in non-U.S. jurisdictions consistent with our assumptions, the continued absence of revenue, earnings, and cash flows associated with 737 MAX deliveries would continue to have a material impact on our operating results. In the event that future production rate increases occur at a slower rate or take longer than we are currently assuming, we expect that the growth in inventory and other cash flow impacts associated with production would decrease. However, while any prolonged production suspension or delays in planned production rate increases could mitigate the impact on our liquidity, it could significantly increase the overall expected costs to produce aircraft included in the accounting quantity, which would reduce 737 program margins and/or increase abnormal production costs in the future. Commercial air traffic has fallen dramatically due to the COVID-19 pandemic. While this trend has impacted passenger traffic most severely, near-term cargo traffic has also fallen significantly due to the global economic downturn and the reduction in cargo capacity on passenger airplanes. Airlines have significantly reduced their capacity, and many could implement further reductions in the near future. Many airlines are also implementing significant reductions in staffing. These capacity changes are causing, and are expected to continue to cause, negative impacts to our customers’ revenue, earnings, and cash flow, and in some cases may threaten the future viability of some of our customers, potentially causing defaults within our customer financing portfolio and/or requiring us to remarket aircraft that have already been produced and/or are currently in backlog. If 737 MAX aircraft remain grounded for an extended period of time in non-U.S. jurisdictions, we may experience additional reductions to backlog and/or significant order cancellations. Additionally, we may experience fewer new orders and increased cancellations across all of our commercial airplane programs as a result of the COVID-19 pandemic and associated impacts on demand. Our customers may also lack sufficient liquidity to purchase new aircraft due to impacts from the pandemic. We are also observing a significant increase in the number of requests for payment deferrals, contract modifications, lease restructurings and similar actions, and these trends may lead to additional earnings charges, impairments and other adverse financial impacts in our business over time. In addition, to the extent that customers have valid rights to cancel undelivered aircraft, we may be required to refund pre-delivery payments, putting additional constraints on our liquidity. There is risk that the industry implements longer-term strategies involving reduced capacity, shifting route patterns, and mitigation strategies related to impacts from COVID-19 and the risk of future public health crises. In addition, airlines may experience reduced demand due to reluctance by the flying public to travel. As a result, there is significant uncertainty with respect to when commercial air traffic levels will begin to recover, and whether and at what point capacity will return to and/or exceed pre-COVID-19 levels. The COVID-19 pandemic also has increased, and its aftermath is also expected to continue to increase, uncertainty with respect to global trade volumes, putting significant negative pressure on cargo traffic. Any of these factors would have a significant impact on the demand for both single-aisle and wide-body commercial aircraft, as well as for the services we provide to commercial airlines. In addition, a lengthy period of reduced industry-wide demand for commercial aircraft would put additional pressure on our suppliers, resulting in increased procurement costs and/or additional supply chain disruption. To the extent that the COVID-19 pandemic or its aftermath further impacts demand for our products and services or impairs the viability of some of our customers and/or suppliers, our financial condition, results of operations, and cash flows could be adversely affected, and those impacts could be material. Environmental The following table summarizes environmental remediation activity during the years ended December 31, 2020 and 2019. 2020 2019 Beginning balance – January 1 $570 $555 Reductions for payments made (42) (47) Changes in estimates 37 62 Ending balance – December 31 $565 $570 The liabilities recorded represent our best estimate or the low end of a range of reasonably possible costs expected to be incurred to remediate sites, including operation and maintenance over periods of up to 30 years. It is reasonably possible that we may incur charges that exceed these recorded amounts because of regulatory agency orders and directives, changes in laws and/or regulations, higher than expected costs and/or the discovery of new or additional contamination. As part of our estimating process, we develop a range of reasonably possible alternate scenarios that includes the high end of a range of reasonably possible cost estimates for all remediation sites for which we have sufficient information based on our experience and existing laws and regulations. There are some potential remediation obligations where the costs of remediation cannot be reasonably estimated. At December 31, 2020 and 2019, the high end of the estimated range of reasonably possible remediation costs exceeded our recorded liabilities by $1,095 and $1,077. Product Warranties The following table summarizes product warranty activity recorded during the years ended December 31, 2020 and 2019. 2020 2019 Beginning balance – January 1 $1,267 $1,127 Additions for current year deliveries 65 188 Reductions for payments made (260) (249) Changes in estimates 455 201 Ending balance – December 31 $1,527 $1,267 The increase in the product warranty reserve during the years ended December 31, 2020 and 2019 is primarily driven by charges related to “pickle forks” on 737NG aircraft. During 2019, we detected cracks in the "pickle forks", a frame fitting component of the structure connecting the wings to the fuselages of 737NG aircraft. We notified the FAA, which issued a directive requiring that certain 737NG airplanes be inspected. We have estimated the number of aircraft that will have to be repaired in the future and provisioned for the estimated costs of completing the repairs. We recognized charges of $135 in 2019 for current and projected future aircraft repairs. During the first quarter of 2020, we recognized additional charges of $336 based on revised engineering and fleet utilization estimates as well as updated repair cost estimates. We cannot estimate a range of reasonably possible losses, if any, in excess of amounts recognized due to the ongoing nature of the inspections and repairs and pending the completion of investigations into the cause of the condition. Commercial Aircraft Commitments In conjunction with signing definitive agreements for the sale of new aircraft (Sale Aircraft), we have entered into trade-in commitments with certain customers that give them the right to trade in used aircraft at a specified price upon the purchase of Sale Aircraft. The probability that trade-in commitments will be exercised is determined by using both quantitative information from valuation sources and qualitative information from other sources. The probability of exercise is assessed quarterly, or as events trigger a change, and takes into consideration the current economic and airline industry environments. Trade-in commitments, which can be terminated by mutual consent with the customer, may be exercised only during the period specified in the agreement, and require advance notice by the customer. Trade-in commitment agreements at December 31, 2020 have expiration dates from 2021 through 2028. At December 31, 2020 and 2019, total contractual trade-in commitments were $950 and $1,407. As of December 31, 2020 and 2019, we estimated that it was probable we would be obligated to perform on certain of these commitments with net amounts payable to customers totaling $599 and $711 and the fair value of the related trade-in aircraft was $580 and $678. Financing Commitments Financing commitments related to aircraft on order, including options and those proposed in sales campaigns, and refinancing of delivered aircraft, totaled $11,512 and $13,377 as of December 31, 2020 and 2019. The estimated earliest potential funding dates for these commitments as of December 31, 2020 are as follows: Total 2021 $2,329 2022 2,384 2023 1,677 2024 1,677 2025 1,827 Thereafter 1,618 $11,512 As of December 31, 2020, all of these financing commitments relate to customers we believe have less than investment-grade credit. We have concluded that no reserve for future potential losses is required for these financing commitments based upon the terms, such as collateralization and interest rates, under which funding would be provided. Funding Commitments We have commitments to make additional capital contributions of $243 to joint ventures over the next seven years. Standby Letters of Credit and Surety Bonds We have entered into standby letters of credit and surety bonds with financial institutions primarily relating to the guarantee of our future performance on certain contracts. Contingent liabilities on outstanding letters of credit agreements and surety bonds aggregated approximately $4,238 and $3,769 as of December 31, 2020 and 2019. Company Owned Life Insurance McDonnell Douglas Corporation insured its executives with Company Owned Life Insurance (COLI), which are life insurance policies with a cash surrender value. Although we do not use COLI currently, these obligations from the merger with McDonnell Douglas are still a commitment at this time. We have loans in place to cover costs paid or incurred to carry the underlying life insurance policies. As of United States Government Defense Environment Overview The Omnibus appropriations acts for FY21, enacted in December 2020, provided FY21 appropriations for government departments and agencies, including the United States Department of Defense (U.S. DoD), the National Aeronautics and Space Administration (NASA) and the Federal Aviation Administration. BDS Fixed-Price Development Contracts Fixed-price development work is inherently uncertain and subject to significant variability in estimates of the cost and time required to complete the work. BDS fixed-price contracts with significant development work include Commercial Crew, KC-46A Tanker, MQ-25, T-7A Red Hawk, VC-25B, and commercial and military satellites. The operational and technical complexities of these contracts create financial risk, which could trigger termination provisions, order cancellations or other financially significant exposure. Changes to cost and revenue estimates could result in lower margins or material charges for reach-forward losses. For example, we have recorded an increase in the reach-forward loss of $1,320 on KC-46A Tanker in 2020. The KC-46A Tanker reach-forward loss reflects $551 of costs associated with the agreement signed in April 2020 with the U.S. Air Force (USAF) to develop and integrate a new Remote Vision System, and the remaining costs reflect production inefficiencies including impacts of COVID-19 disruption. Moreover, our fixed-price development programs remain subject to additional reach-forward losses if we experience further production, technical or quality issues, schedule delays, or increased costs. KC-46A Tanker In 2011, we were awarded a contract from the U.S. Air Force (USAF) to design, develop, manufacture and deliver four next generation aerial refueling tankers. This Engineering, Manufacturing and Development (EMD) contract is a fixed-price incentive fee contract and involves highly complex designs and systems integration. Since 2016, the USAF has authorized five low rate initial production (LRIP) lots for a total of 67 aircraft. The EMD contract and authorized LRIP lots are valued at approximately $15 billion as of December 31, 2020. At December 31, 2020, we had approximately $463 of capitalized precontract costs and $1,281 of potential termination liabilities to suppliers. These values were primarily related to 12 aircraft in lot 6 and 15 aircraft in lot 7 for which we received contract awards in January 2021. Recoverable Costs on Government Contracts Our final incurred costs for each year are subject to audit and review for allowability by the U.S. government, which can result in payment demands related to costs they believe should be disallowed. We work with the U.S. government to assess the merits of claims and where appropriate reserve for amounts disputed. If we are unable to satisfactorily resolve disputed costs, we could be required to record an earnings charge and/or provide refunds to the U.S. government. Severance The following table summarizes changes in the severance liability during 2020: 2020 Initial liability recorded in the second quarter of 2020 $652 Reductions for payments made (658) Changes in estimates 289 Ending balance – December 31 $283 During 2020, the Company recorded severance costs for approximately 26,000 employees expected to leave the Company through a combination of voluntary and involuntary terminations. The severance packages are consistent with the Company’s ongoing compensation and benefits plans. As of December 31, 2020, approximately 18,000 of the 26,000 employees have left the Company, and the remainder are expected to leave in 2021.

Arrangements With Off-Balance S

Arrangements With Off-Balance Sheet Risk	12 Months Ended
	Dec. 31, 2020
Guarantees [Abstract]
Arrangements With Off-Balance Sheet Risk	Arrangements with Off-Balance Sheet Risk We enter into arrangements with off-balance sheet risk in the normal course of business, primarily in the form of guarantees. The following table provides quantitative data regarding our third party guarantees. The maximum potential payments represent a “worst-case scenario,” and do not necessarily reflect amounts that we expect to pay. Estimated proceeds from collateral and recourse represent the anticipated values of assets we could liquidate or receive from other parties to offset our payments under guarantees. The carrying amount of liabilities represents the amount included in Accrued liabilities. Maximum Estimated Carrying December 31, 2020 2019 2020 2019 2020 2019 Contingent repurchase commitments $1,452 $1,570 $1,452 $1,570 Indemnifications to ULA: Contributed Delta inventory 15 30 Inventory supply agreement 17 34 Questioned costs 317 $48 Credit guarantees 90 92 28 36 $24 16 Contingent Repurchase Commitments The repurchase price specified in contingent repurchase commitments is generally lower than the expected fair value at the specified repurchase date. Estimated proceeds from collateral/recourse in the table above represent the lower of the contracted repurchase price or the expected fair value of each aircraft at the specified repurchase date. Indemnifications to ULA During the first quarter of 2020, the USAF and ULA reached a settlement regarding previously questioned deferred support and deferred production costs. As part of the settlement the USAF agreed to reimburse ULA for $307 of those costs, which was received by ULA in the second quarter. Our indemnification to ULA associated with the recoverability of contributed assets expired on December 31, 2020, resulting in a $33 payment to the partnership. This settlement retires our indemnification risks to ULA. Other Indemnifications In conjunction with our sales of Electron Dynamic Devices, Inc. and Rocketdyne Propulsion and Power businesses and our BCA facilities in Wichita, Kansas and Tulsa and McAlester, Oklahoma, we agreed to indemnify, for an indefinite period, the buyers for costs relating to pre-closing environmental conditions and certain other items. We are unable to assess the potential number of future claims that may be asserted under these indemnifications, nor the amounts thereof (if any). As a result, we cannot estimate the maximum potential amount of future payments under these indemnities and therefore, no liability has been recorded. To the extent that claims have been made under these indemnities and/or are probable and reasonably estimable, liabilities associated with these indemnities are included in the environmental liability disclosure in Note 13. Credit Guarantees We have issued credit guarantees where we are obligated to make payments to a guaranteed party in the event that the original lessee or debtor does not make payments or perform certain specified services. Generally, these guarantees have been extended on behalf of guaranteed parties with less than investment-grade credit and are collateralized by certain assets. Current outstanding credit guarantees expire through 2036. Industrial Revenue Bonds Industrial Revenue Bonds (IRB) issued by St. Louis County were used to finance the purchase and/or construction of real and personal property at our St. Louis site. Tax benefits associated with IRBs include a twelve-year property tax abatement and sales tax exemption from St. Louis County. We record these properties on our Consolidated Statements of Financial Position. We have also purchased the IRBs and therefore are the bondholders as well as the borrower/lessee of the properties purchased with the IRB proceeds. The liabilities and IRB assets are equal and are reported net in the Consolidated Statements of Financial Position. As of December 31, 2020 and 2019, the assets and liabilities associated with the IRBs were $271.

Debt

Debt	12 Months Ended
	Dec. 31, 2020
Debt Disclosure [Abstract]
Debt	Debt In the first quarter of 2020, we entered into a $13,825, two-year delayed draw term loan facility, which includes additional commitments made subsequent to the initial closing date. As of December 31, 2020, we have fully drawn on the 13,825 delayed draw term loan facility, with February 6, 2022 as the final maturity date. Borrowings outstanding bear interest at the Eurodollar rate (determined in accordance with the delayed draw term loan facility agreement) plus between 0.75% and 1.25%, depending on our credit rating. In the second quarter of 2020, we issued $25,000 of fixed rate senior notes consisting of $3,000 due May 1, 2023 that bear an annual interest rate of 4.508%, $3,500 due May 1, 2025 that bear an annual interest rate of 4.875%, $2,000 due May 1, 2027 that bear an annual interest rate of 5.04%, $4,500 due May 1, 2030 that bear an annual interest rate of 5.15%, $3,000 due May 1, 2040 that bear an annual interest rate of 5.705%, $5,500 due May 1, 2050 that bear an annual interest rate of 5.805%, and $3,500 due May 1, 2060 that bear an annual interest rate of 5.93%. The notes are unsecured senior obligations and rank equally in right of payment with our existing and future unsecured and unsubordinated indebtedness. The net proceeds of the issuance totaled $24,802, after deducting underwriting discounts, commissions, and offering expenses. In the fourth quarter of 2020, we issued $4,900 of fixed rate senior notes consisting of $1,000 due February 1, 2024 that bear an annual interest rate of 1.95%, $1,400 due February 1, 2026 that bear an annual interest rate of 2.75%, $1,100 due February 1, 2028 that bear an annual interest rate of 3.25%, and $1,400 due February 1, 2031 that bear an annual interest rate of 3.625%. The notes are unsecured senior obligations and rank equally in right of payment with our existing and future unsecured and unsubordinated indebtedness. The net proceeds of the issuance totaled $4,870, after deducting underwriting discounts, commissions, and offering expenses. Interest incurred, including amounts capitalized, was $2,280, $867 and $624 for the years ended December 31, 2020, 2019 and 2018, respectively. Interest expense recorded by BCC is reflected as Boeing Capital interest expense on our Consolidated Statements of Operations. Total Company interest payments were $1,925, $973 and $616 for the years ended December 31, 2020, 2019 and 2018, respectively. We have $9,473 currently available under credit line agreements, of which $3,073 is a 364-day revolving credit facility expiring in October 2021, $3,200 expires in October 2022, and $3,200 expires in October 2024. The 364-day credit facility has a one-year term out option which allows us to extend the maturity of any borrowings one year beyond the aforementioned expiration date. We continue to be in full compliance with all covenants contained in our debt or credit facility agreements. Short-term debt and current portion of long-term debt at December 31 consisted of the following: 2020 2019 Unsecured debt $1,448 $1,099 Non-recourse debt and notes 15 21 Finance lease obligations 65 71 Commercial paper 6,109 Other notes 165 40 Total $1,693 $7,340 Debt at December 31 consisted of the following: 2020 2019 Unsecured debt Variable rate: Eurodollar plus 0.75% - 1.25% due 2022 $13,819 1.45% - 3.20% due through 2030 10,645 $8,600 3.25% - 3.90% due through 2059 9,555 7,073 3.95% - 5.15% due through 2059 13,917 1,731 5.71% - 6.63% due through 2060 13,005 1,129 6.88% - 8.75% due through 2043 2,252 2,250 Commercial paper 6,109 Non-recourse debt and notes 6.98% notes due through 2021 15 37 Finance lease obligations due through 2044 203 229 Other notes 172 144 Total debt $63,583 $27,302 At December 31, 2020, we had no commercial paper borrowings. At December 31, 2019, commercial paper borrowings totaling $6,109, with a weighted-average interest rate of 2.2%, were supported by unused commitments under the revolving credit agreement. Total debt at December 31 is attributable to: 2020 2019 BCC $1,640 $1,960 Other Boeing 61,943 25,342 Total debt $63,583 $27,302 At December 31, 2020, $15 of debt (non-recourse debt) was collateralized by customer financing assets totaling $167. Scheduled principal payments for debt and minimum finance lease obligations for the next five years are as follows: 2021 2022 2023 2024 2025 Debt $1,630 $14,976 $3,776 $2,001 $4,301 Minimum finance lease obligations $68 $53 $31 $14 $6

Postretirement Plans

Postretirement Plans	12 Months Ended
	Dec. 31, 2020
Retirement Benefits, Description [Abstract]
Postretirement Plans	Postretirement Plans Many of our employees have earned benefits under defined benefit pension plans. Nonunion and the majority of union employees that had participated in defined benefit pension plans transitioned to a company-funded defined contribution retirement savings plan in 2016. Additional union employees transitioned to company-funded defined contribution retirement savings plans effective January 1, 2019. We fund our major pension plans through trusts. Pension assets are placed in trust solely for the benefit of the plans’ participants, and are structured to maintain liquidity that is sufficient to pay benefit obligations as well as to keep pace over the long-term with the growth of obligations for future benefit payments. We also have other postretirement benefits (OPB) other than pensions which consist principally of health care coverage for eligible retirees and qualifying dependents, and to a lesser extent, life insurance to certain groups of retirees. Retiree health care is provided principally until age 65 for approximately two-thirds of those participants who are eligible for health care coverage. Certain employee groups, including employees covered by most United Auto Workers bargaining agreements, are provided lifetime health care coverage. The funded status of the plans is measured as the difference between the plan assets at fair value and the projected benefit obligation (PBO). We have recognized the aggregate of all overfunded plans in Other assets, and the aggregate of all underfunded plans in either Accrued retiree health care or Accrued pension plan liability, net. The portion of the amount by which the actuarial present value of benefits included in the PBO exceeds the fair value of plan assets, payable in the next 12 months, is reflected in Accrued liabilities. The components of net periodic benefit (income)/cost were as follows: Pension Other Postretirement Benefits Years ended December 31, 2020 2019 2018 2020 2019 2018 Service cost $3 $2 $430 $89 $77 $94 Interest cost 2,455 2,925 2,781 130 196 194 Expected return on plan assets (3,756) (3,863) (4,009) (9) (8) (8) Amortization of prior service credits (80) (79) (56) (38) (35) (126) Recognized net actuarial loss/(gain) 1,032 643 1,130 (63) (46) (10) Settlement/curtailment loss/(gain) 9 44 (4) Net periodic benefit (income)/cost ($337) ($372) $320 $105 $184 $144 Net periodic benefit cost included in (Loss)/earnings $3 $313 $313 $91 $88 $84 Net periodic benefit (income)/cost included in Other income, net (340) (374) (143) 16 107 101 Net periodic benefit (income)/cost included in (Loss)/earnings before income taxes ($337) ($61) $170 $107 $195 $185 The following tables show changes in the benefit obligation, plan assets and funded status of both pensions and OPB for the years ended December 31, 2020 and 2019. Benefit obligation balances presented below reflect the PBO for our pension plans, and accumulated postretirement benefit obligations (APBO) for our OPB plans. Pension Other Postretirement Benefits 2020 2019 2020 2019 Change in benefit obligation Beginning balance $77,645 $71,424 $5,080 $5,114 Service cost 3 2 89 77 Interest cost 2,455 2,925 130 196 Amendments (29) 1 Actuarial loss/(gain) 7,759 8,695 (218) 127 Settlement/curtailment/other (68) (756) 55 Gross benefits paid (5,386) (4,658) (450) (474) Subsidies 36 36 Exchange rate adjustment 7 13 3 Ending balance $82,415 $77,645 $4,693 $5,080 Change in plan assets Beginning balance at fair value $61,711 $56,102 $149 $132 Actual return on plan assets 9,275 10,851 21 26 Company contribution 3,013 16 1 Plan participants’ contributions 6 6 Settlement payments (68) (756) Benefits paid (5,241) (4,514) (16) (16) Exchange rate adjustment 6 12 Ending balance at fair value $68,696 $61,711 $160 $149 Amounts recognized in statement of financial position at December 31 consist of: Other assets $837 $484 Accrued liabilities (148) (142) ($396) ($391) Accrued retiree health care (4,137) (4,540) Accrued pension plan liability, net (14,408) (16,276) Net amount recognized ($13,719) ($15,934) ($4,533) ($4,931) Amounts recognized in Accumulated other comprehensive loss at December 31 were as follows: Pension Other Postretirement Benefits 2020 2019 2020 2019 Net actuarial loss/(gain) $24,324 $23,124 ($735) ($625) Prior service credits (1,387) (1,467) (110) (122) Total recognized in Accumulated other comprehensive loss $22,937 $21,657 ($845) ($747) The accumulated benefit obligation (ABO) for all pension plans was $80,694 and $75,787 at December 31, 2020 and 2019. Key information for our plans with ABO and PBO in excess of plan assets as of December 31 was as follows: 2020 2019 Accumulated benefit obligation $74,337 $70,466 Fair value of plan assets 61,502 55,907 2020 2019 Projected benefit obligation $76,057 $72,325 Fair value of plan assets 61,502 55,907 Assumptions The following assumptions, which are the weighted average for all plans, are used to calculate the benefit obligation at December 31 of each year and the net periodic benefit cost for the subsequent year. December 31, 2020 2019 2018 Discount rate: Pension 2.50 % 3.30 % 4.20 % Other postretirement benefits 2.00 % 3.00 % 4.00 % Expected return on plan assets 6.50 % 6.80 % 6.80 % Rate of compensation increase 4.30 % 4.30 % 5.30 % Interest crediting rates for cash balance plans 5.00 % 5.15 % 5.15 % The discount rate for each plan is determined based on the plans’ expected future benefit payments using a yield curve developed from high quality bonds that are rated as Aa or better by at least half of the four rating agencies utilized as of the measurement date. The yield curve is fitted to yields developed from bonds at various maturity points. Bonds with the ten percent highest and the ten percent lowest yields are omitted. The present value of each plan’s benefits is calculated by applying the discount rates to projected benefit cash flows. The pension fund’s expected return on plan assets assumption is derived from a review of actual historical returns achieved by the pension trust and anticipated future long-term performance of individual asset classes. While consideration is given to historical returns, the assumption represents a long-term, prospective return. The expected return on plan assets component of the net periodic benefit cost for the upcoming plan year is determined based on the expected return on plan assets assumption and the market-related value of plan assets (MRVA). Since our adoption of the accounting standard for pensions in 1987, we have determined the MRVA based on a five-year moving average of plan assets. As of December 31, 2020, the MRVA was approximately $6,805 less than the fair market value of assets. Assumed health care cost trend rates were as follows: December 31, 2020 2019 2018 Health care cost trend rate assumed next year 4.50 % 5.00 % 5.50 % Ultimate trend rate 4.50 % 4.50 % 4.50 % Year that trend reached ultimate rate 2021 2021 2021 Plan Assets Investment Strategy The overall objective of our pension assets is to earn a rate of return over time to satisfy the benefit obligations of the pension plans and to maintain sufficient liquidity to pay benefits and address other cash requirements of the pension fund. Specific investment objectives for our long-term investment strategy include reducing the volatility of pension assets relative to pension liabilities, achieving a competitive total investment return, achieving diversification between and within asset classes and managing other risks. Investment objectives for each asset class are determined based on specific risks and investment opportunities identified. We periodically update our long-term, strategic asset allocations. We use various analytics to determine the optimal asset mix and consider plan liability characteristics, liquidity characteristics, funding requirements, expected rates of return and the distribution of returns. We identify investment benchmarks to evaluate performance for the asset classes in the strategic asset allocation that are market-based and investable where possible. Actual allocations to each asset class vary from target allocations due to periodic investment strategy changes, market value fluctuations, the length of time it takes to fully implement investment allocation positions, and the timing of benefit payments and contributions. Short-term investments and exchange-traded derivatives are used to rebalance the actual asset allocation to the target asset allocation. The asset allocation is monitored and rebalanced frequently. The actual and target allocations by asset class for the pension assets at December 31 were as follows: Actual Allocations Target Allocations Asset Class 2020 2019 2020 2019 Fixed income 49 % 49 % 49 % 47 % Global equity 30 29 29 29 Private equity 6 5 5 5 Real estate and real assets 7 8 9 9 Hedge funds 8 9 8 10 Total 100 % 100 % 100 % 100 % Fixed income securities are invested primarily in a diversified portfolio of long duration instruments as well as Emerging Market, Structured, High Yield and Private Debt. Global equity securities are invested in a diversified portfolio of U.S. and non-U.S. companies, across various industries and market capitalizations. Private equity investment vehicles are primarily limited partnerships (LPs) that mainly invest in U.S. and non-U.S. leveraged buyout, venture capital and special situation strategies. Real estate and real assets include global private investments that may be held through investments in a limited partnership (LP) or other fund structures and publicly traded investments (such as Real Estate Investment Trusts (REITs) in the case of real estate). Real estate includes, but is not limited to, investments in office, retail, apartment and industrial properties. Real assets include, but are not limited to, investments in natural resources (such as energy, farmland and timber), commodities and infrastructure. Hedge fund investments seek to capitalize on inefficiencies identified across and within different asset classes or markets. Hedge fund strategy types include, but are not limited to directional, event driven, relative value, long-short and multi-strategy. Investment managers are retained for explicit investment roles specified by contractual investment guidelines. Certain investment managers are authorized to use derivatives, such as equity or bond futures, swaps, options and currency futures or forwards. Derivatives are used to achieve the desired market exposure of a security or an index, transfer value-added performance between asset classes, achieve the desired currency exposure, adjust portfolio duration or rebalance the total portfolio to the target asset allocation. As a percentage of total pension assets, derivative net notional amounts were 8.3% and 4.3% for fixed income, including to-be-announced mortgage-backed securities and treasury forwards, and 0.4% and 3.6% for global equity and commodities at December 31, 2020 and 2019. I n November 2020, the Company contributed $3,000 of our common stock to the pension fund. An independent fiduciary was retained to manage and liquidate the stock over time at its discretion. Plan assets included $3,298 and $0 of our common stock as of December 31, 2020 and 2019. Risk Management In managing the pension assets, we review and manage risk associated with funded status risk, interest rate risk, market risk, counterparty risk, liquidity risk and operational risk. Liability matching and asset class diversification are central to our risk management approach and are integral to the overall investment strategy. Further, asset classes are constructed to achieve diversification by investment strategy, by investment manager, by industry or sector and by holding. Investment manager guidelines for publicly traded assets are specified and are monitored regularly through the custodian. Credit parameters for counterparties have been established for managers permitted to trade over-the-counter derivatives. Valuation is governed through several types of procedures, including reviews of manager valuation policies, custodian valuation processes, pricing vendor practices, pricing reconciliation, and periodic, security-specific valuation testing. Fair Value Measurements The following table presents our plan assets using the fair value hierarchy as of December 31, 2020 and 2019. The fair value hierarchy has three levels based on the reliability of the inputs used to determine fair value. Level 1 refers to fair values determined based on quoted prices in active markets for identical assets. Level 2 refers to fair values estimated using significant other observable inputs, and Level 3 includes fair values estimated using significant unobservable inputs. December 31, 2020 December 31, 2019 Total Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Fixed income securities: Corporate $20,841 $20,801 $40 $19,341 $19,336 $5 U.S. government and agencies 5,170 5,168 2 5,759 5,759 Mortgage backed and asset backed 786 666 120 1,181 720 461 Municipal 1,176 1,104 72 1,317 1,317 Sovereign 1,040 1,038 2 1,076 1,076 Other 19 $18 1 55 $7 48 Derivatives: Assets 6 6 Liabilities (17) (17) (143) (143) Cash equivalents and other short-term investments 1,081 1,081 769 769 Equity securities: U.S. common and preferred stock 5,013 5,013 4,866 4,866 Non-U.S. common and preferred stock 5,577 5,575 2 5,529 5,527 2 Boeing company stock 3,298 3,298 Derivatives: Assets 10 10 6 6 Liabilities (9) (9) (5) (5) Private equity Real estate and real assets: Real estate 351 351 454 454 Real assets 786 723 61 2 810 649 157 4 Derivatives: Assets 6 6 5 1 4 Liabilities (2) (2) (2) (2) Total $45,132 $14,978 $29,914 $240 $41,018 $11,504 $29,042 $472 Fixed income common/collective/pooled funds $2,345 $959 Fixed income other 604 512 Equity common/collective pooled funds 6,947 6,301 Private equity 4,013 3,184 Real estate and real assets 3,359 3,605 Hedge funds 5,745 5,688 Total investments measured at NAV as a practical expedient $23,013 $20,249 Cash $267 $207 Receivables 992 383 Payables (708) (146) Total $68,696 $61,711 Fixed income securities are primarily valued upon a market approach, using matrix pricing and considering a security’s relationship to other securities for which quoted prices in an active market may be available, or an income approach, converting future cash flows to a single present value amount. Inputs used in developing fair value estimates include reported trades, broker quotes, benchmark yields, and base spreads. Common/collective/pooled funds are typically common or collective trusts valued at their net asset values (NAVs) that are calculated by the investment manager or sponsor of the fund and have daily or monthly liquidity. Derivatives included in the table above are over-the-counter and are primarily valued using an income approach with inputs that include benchmark yields, swap curves, cash flow analysis, rating agency data and interdealer broker rates. Exchange-traded derivative positions are reported in accordance with changes in daily variation margin which is settled daily and therefore reflected in the payables and receivables portion of the table. Cash equivalents and other short-term investments (which are used to pay benefits) are held in a separate account which consists of a commingled fund (with daily liquidity) and separately held short-term securities and cash equivalents. All of the investments in this cash vehicle are valued daily using a market approach with inputs that include quoted market prices for similar instruments. In the event a market price is not available for instruments with an original maturity of one year or less, amortized cost is used as a proxy for fair value. Common and preferred stock equity securities are primarily valued using a market approach based on the quoted market prices of identical instruments. Private equity and private debt NAV valuations are based on the valuation of the underlying investments, which include inputs such as cost, operating results, discounted future cash flows and market based comparable data. For those investments reported on a one-quarter lagged basis (primarily LPs) we use NAVs, adjusted for subsequent cash flows and significant events. Real estate and real asset NAV valuations are based on valuation of the underlying investments, which include inputs such as cost, discounted future cash flows, independent appraisals and market based comparable data. For those investments reported on a one-quarter lagged basis (primarily LPs) NAVs are adjusted for subsequent cash flows and significant events. Publicly traded REITs and infrastructure stocks are valued using a market approach based on quoted market prices of identical instruments. Exchange-traded commodities futures positions are reported in accordance with changes in daily variation margin which is settled daily and therefore reflected in the payables and receivables portion of the table. Hedge fund NAVs are generally based on the valuation of the underlying investments. This is primarily done by applying a market or income valuation methodology depending on the specific type of security or instrument held. Investments in private equity, private debt, real estate, real assets, and hedge funds are primarily calculated and reported by the General Partner (GP), fund manager or third party administrator. Additionally, some investments in fixed income and equity are made via commingled vehicles and are valued in a similar fashion. Pension assets invested in commingled and limited partnership structures rely on the NAV of these investments as the practical expedient for the valuations. The following tables present a reconciliation of Level 3 assets held during the years ended December 31, 2020 and 2019. Transfers into and out of Level 3 are reported at the beginning-of-year values. January 1 Net Realized and Unrealized Gains/(Losses) Net Purchases, Issuances and Settlements Net Transfers Into/(Out of) Level 3 December 31 Fixed income securities: Corporate $5 $1 $18 $16 $40 U.S. government and 2 2 Mortgage backed and asset backed 461 (1) (93) (247) 120 Municipal 3 2 67 72 Sovereign (1) 2 1 2 Equity securities: Non-U.S. common and 2 2 Real assets 4 (2) 2 Total $472 $2 ($71) ($163) $240 January 1 Net Realized and Unrealized Gains Net Purchases, Issuances and Settlements Net Transfers Into Level 3 December 31 Fixed income securities: Corporate $2 $3 $5 Mortgage backed and asset backed 312 $11 137 $1 461 Equity securities: Non-U.S. common and preferred stock 1 1 2 Real assets 4 4 Total $318 $11 $141 $2 $472 For the year ended December 31, 2020, the changes in unrealized gains/(losses) for Level 3 assets still held at December 31, 2020 were $2 for corporate, $1 for mortgage backed and asset backed fixed income securities, $3 for municipal bonds and ($1) for sovereign. For the year ended December 31, 2019, the changes in unrealized gains/(losses) for Level 3 assets still held at December 31, 2019 were $10 for mortgage backed and asset backed fixed income securities and ($1) for non-U.S. common and preferred stock equity securities. OPB Plan Assets The majority of OPB plan assets are invested in a balanced index fund which is comprised of approximately 60% equities and 40% debt securities. The index fund is valued using a market approach based on the quoted market price of an identical instrument (Level 1). The expected rate of return on these assets does not have a material effect on the net periodic benefit cost. Cash Flows Contributions Required pension contributions under the Employee Retirement Income Security Act (ERISA), as well as rules governing funding of our non-US pension plans, are not expected to be significant in 2021. During the fourth quarter of 2020, we contributed $3,000 in common stock to the pension fund. We do not expect to make discretionary contributions to our pension plans in 2021. Estimated Future Benefit Payments The table below reflects the total pension benefits expected to be paid from the plans or from our assets, including both our share of the benefit cost and the participants’ share of the cost, which is funded by participant contributions. OPB payments reflect our portion only. Year(s) 2021 2022 2023 2024 2025 2026-2030 Pensions $4,959 $4,825 $4,720 $4,657 $4,581 $21,383 Other postretirement benefits: Gross benefits paid 462 452 435 415 394 1,606 Subsidies (32) (32) (32) (31) (30) (139) Net other postretirement benefits $430 $420 $403 $384 $364 $1,467 Termination Provisions Certain of the pension plans provide that, in the event there is a change in control of the Company which is not approved by the Board of Directors and the plans are terminated within five years thereafter, the assets in the plan first will be used to provide the level of retirement benefits required by ERISA, and then any surplus will be used to fund a trust to continue present and future payments under the postretirement medical and life insurance benefits in our group insurance benefit programs. Should we terminate certain pension plans under conditions in which the plan’s assets exceed that plan’s obligations, the U.S. government will be entitled to a fair allocation of any of the plan’s assets based on plan contributions that were reimbursed under U.S. government contracts. Defined Contribution Plans We provide certain defined contribution plans to all eligible employees. The principal plans are the Company-sponsored 401(k) plans. The expense for these defined contribution plans was $1,351, $1,533 and $1,480 in 2020, 2019 and 2018, respectively.

Share-Based Compensation And Ot

Share-Based Compensation And Other Compensation Arrangements	12 Months Ended
	Dec. 31, 2020
Share-based Payment Arrangement [Abstract]
Share-Based Compensation And Other Compensation Arrangements	Share-Based Compensation and Other Compensation Arrangements Share-Based Compensation Our 2003 Incentive Stock Plan, as amended and restated, permits awards of incentive and non-qualified stock options, stock appreciation rights, restricted stock or units, performance shares, performance restricted stock or units, performance units and other stock and cash-based awards to our employees, officers, directors, consultants, and independent contractors. The aggregate number of shares of our stock authorized for issuance under the plan is 87,000,000. Shares issued as a result of stock option exercises or conversion of stock unit awards will be funded out of treasury shares, except to the extent there are insufficient treasury shares, in which case new shares will be issued. We believe we currently have adequate treasury shares to satisfy these issuances during 2021. Share-based plans expense is primarily included in Total costs and expenses and General and administrative expense, as well as a portion allocated to production as inventoried costs. The share-based plans expense and related income tax benefit were as follows: Years ended December 31, 2020 2019 2018 Restricted stock units and other awards $243 $217 $213 Income tax benefit $53 $47 $46 Stock Options We discontinued granting options in 2014, replacing them with performance-based restricted stock units. Options granted through January 2014 had an exercise price equal to the fair market value of our stock on the date of grant and expire 10 years after the date of grant. The stock options vested over a period of three years and were fully vested as of December 31, 2017. Stock option activity for the year ended December 31, 2020 is as follows: Shares Weighted Average Exercise Price Per Share Weighted Average Remaining Contractual Life (Years) Aggregate Intrinsic Value Number of shares under option: Outstanding at beginning of year 2,375,583 $74.79 Exercised (515,063) 71.47 Outstanding at end of year 1,860,520 $75.71 1.65 $257 Exercisable at end of year 1,860,520 $75.71 1.65 $257 The total intrinsic value of options exercised during the years ended December 31, 2020, 2019 and 2018 was $90, $279 and $320, with a related tax benefit of $32, $61 and $70, respectively. No options vested during the years ended December 31, 2020, 2019 and 2018. Restricted Stock Units In February 2020, 2019 and 2018, we granted to our executives 325,108, 233,582 and 260,730 restricted stock units (RSUs) as part of our long-term incentive program with grant date fair values of $319.04, $428.22 and $361.13 per unit, respectively. In December 2020, we granted to our executives 721,734 RSUs as part of our long-term incentive program with a grant date fair value of $233.00 per unit. The RSUs granted under this program will vest and settle in common stock (on a one-for-one basis) on the third anniversary of the grant date. If an executive terminates employment because of retirement, layoff, disability, or death, the employee (or beneficiary) will receive a proration of stock units based on active employment during the three-year service period, except in the case of the December 2020 grant, which will vest in full for executives that terminate employment due to retirement after attaining certain age and service conditions. In all other cases, the RSUs will not vest and all rights to the stock units will terminate. These RSUs are labeled executive long-term incentive program in the table below. In December 2020, we granted to our employees (excluding executives and certain union-represented employees), a one-time grant of 5,163,425 RSUs with a grant date fair value of $233.00 per unit. The RSUs granted under this program will vest and settle in common stock (on a one-for-one basis) on the third anniversary of the grant date. If an employee terminates employment because of retirement, layoff, disability, or death, the employee (or beneficiary) will receive a proration of stock units based on active employment during the three-year service period. In all other cases, the RSUs will not vest and all rights to the stock units will terminate. These RSUs are labeled employee long-term incentive program in the table below. In addition to RSUs awarded under our long-term incentive program, we grant RSUs to certain executives and employees to encourage retention or to reward various achievements. These RSUs are labeled other RSUs in the table below. The fair values of all RSUs are estimated using the average of the high and low stock prices on the date of grant. RSU activity for the year ended December 31, 2020 was as follows: Executive Long-Term Incentive Program Employee Long-Term Incentive Program Other Number of units: Outstanding at beginning of year 905,025 908,321 Granted 1,103,608 5,163,425 196,818 Dividends 7,091 7,303 Forfeited (104,374) (33,896) Distributed (487,749) (329,227) Outstanding at end of year 1,423,601 5,163,425 749,319 Unrecognized compensation cost $237 $973 $102 Weighted average remaining contractual life (years) 2.5 3.0 2.0 The number of vested but undistributed RSUs at December 31, 2020 was not significant. Performance-Based Restricted Stock Units Performance-Based Restricted Stock Units (PBRSUs) are stock units that pay out based on the Company’s total shareholder return as compared to a group of peer companies over a three-year period. The award payout can range from 0% to 200% of the initial PBRSU grant. The PBRSUs granted under this program will vest at the payout amount and settle in common stock (on a one-for-one basis) on the third anniversary of the grant date. If an executive terminates employment because of retirement, layoff, disability, or death, the employee (or beneficiary) remains eligible under the award and, if the award is earned, will receive a proration of stock units based on active employment during the three-year service period. In all other cases, the PBRSUs will not vest and all rights to the stock units will terminate. In February 2020, 2019 and 2018, we granted to our executives 290,202, 214,651 and 241,284 PBRSUs as part of our long-term incentive program. Compensation expense for the award is recognized over the three-year performance period based upon the grant date fair value. The grant date fair values were estimated using a Monte-Carlo simulation model with the assumptions presented below. The model includes no expected dividend yield as the units earn dividend equivalents. Grant Year Grant Date Performance Period Expected Volatility Risk Free Interest Rate Grant Date Fair Value 2020 2/24/2020 3 years 27.04 % 1.21 % $357.38 2019 2/25/2019 3 years 23.88 % 2.46 % 466.04 2018 2/26/2018 3 years 22.11 % 2.36 % 390.27 PBRSU activity for the year ended December 31, 2020 was as follows: Executive Long-Term Incentive Program Number of units: Outstanding at beginning of year 826,126 Granted 290,202 Performance based adjustment (1) 293,203 Dividends 27,299 Forfeited (83,055) Distributed (732,216) Outstanding at end of year 621,559 Unrecognized compensation cost $93 Weighted average remaining contractual life (years) 1.8 (1) Represents net incremental number of units issued at vesting based on TSR for units granted in 2017. Performance Awards During 2020, 2019 and 2018, we granted Performance Awards to our executives, which are cash units that pay out based on the achievement of long-term financial goals at the end of a three-year period. Each unit has an initial value of $100 dollars. The amount payable at the end of the three The minimum payout amount is $0 and the maximum amount we could be required to pay out for the 2020, 2019 and 2018 Performance Awards is $274, $341 and $331, respectively. Deferred Compensation The Company has deferred compensation plans which permit certain employees to defer a portion of their salary, bonus, certain other incentive awards, and retirement contributions. Participants can diversify these amounts among 23 investment funds including a Boeing stock unit account. Total expense related to deferred compensation was $93, $174 and $19 in 2020, 2019 and 2018, respectively. As of December 31, 2020 and 2019, the deferred compensation liability which is being marked to market was $1,718 and $1,779.

Shareholders' Equity

Shareholders' Equity	12 Months Ended
	Dec. 31, 2020
Stockholders' Equity Note [Abstract]
Shareholders' Equity	Shareholders’ Equity On December 17, 2018, the Board approved a repurchase plan for up to $20,000 of common stock. In March 2020, the Board of Directors terminated its prior authorization to repurchase shares under this plan. As of December 31, 2020 and 2019, there were 1,200,000,000 shares of common stock and 20,000,000 shares of preferred stock authorized. No preferred stock has been issued. Changes in Share Balances The following table shows changes in each class of shares: Common Treasury Balance at January 1, 2018 1,012,261,159 421,222,326 Issued (3,409,330) Acquired 26,806,974 Balance at December 31, 2018 1,012,261,159 444,619,970 Issued (2,797,002) Acquired 7,529,437 Balance at December 31, 2019 1,012,261,159 449,352,405 Issued (19,986,868) Acquired 575,484 Balance at December 31, 2020 1,012,261,159 429,941,021 Accumulated Other Comprehensive Loss Changes in Accumulated other comprehensive loss (AOCI) by component for the years ended December 31, 2020, 2019 and 2018 were as follows: Currency Translation Adjustments Unrealized Gains and Losses on Certain Investments Unrealized Gains and Losses on Derivative Instruments Defined Benefit Pension Plans & Other Postretirement Benefits Total (1) Balance at January 1, 2018 ($15) ($2) $54 ($16,410) ($16,373) Other comprehensive (loss)/income before reclassifications (86) 2 (146) 747 517 Amounts reclassified from AOCI 30 743 (2) 773 Net current period Other comprehensive (loss)/income (86) 2 (116) 1,490 1,290 Balance at December 31, 2018 ($101) $— ($62) ($14,920) ($15,083) Other comprehensive income/(loss) before reclassifications (27) 1 (48) (1,397) (1,471) Amounts reclassified from AOCI 26 375 (2) 401 Net current period Other comprehensive (loss)/income (27) 1 (22) (1,022) (1,070) Balance at December 31, 2019 ($128) $1 ($84) ($15,942) ($16,153) Other comprehensive (loss)/income before reclassifications 98 14 (1,929) (1,817) Amounts reclassified from AOCI 27 810 (2) 837 Net current period Other comprehensive (loss)/income 98 41 (1,119) (980) Balance at December 31, 2020 ($30) $1 ($43) ($17,061) ($17,133) (1) Net of tax. (2) Primarily relates to amortization of actuarial losses for the years ended December 31, 2020, 2019, and 2018 totaling $917, $464, and $878 (net of tax of ($52), ($133), and ($242)), respectively. These are included in the net periodic pension cost. See Note 16.

Derivative Financial Instrument

Derivative Financial Instruments	12 Months Ended
	Dec. 31, 2020
Summary of Derivative Instruments [Abstract]
Derivative Financial Instruments

Fair Value Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2020
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements The fair value hierarchy has three levels based on the reliability of the inputs used to determine fair value. Level 1 refers to fair values determined based on quoted prices in active markets for identical assets. Level 2 refers to fair values estimated using significant other observable inputs, and Level 3 includes fair values estimated using significant unobservable inputs. The following table presents our assets and liabilities that are measured at fair value on a recurring basis and are categorized using the fair value hierarchy. December 31, 2020 December 31, 2019 Total Level 1 Level 2 Total Level 1 Level 2 Assets Money market funds $2,230 $2,230 $2,562 $2,562 Available-for-sale debt investments: Commercial paper 149 $149 108 $108 Corporate notes 333 333 242 242 U.S. government agencies 114 114 55 55 Other equity investments 54 54 33 33 Derivatives 76 76 14 $14 Total assets $2,956 $2,284 $672 $3,014 $2,650 $364 Liabilities Derivatives ($69) ($69) ($118) ($118) Total liabilities ($69) ($69) ($118) ($118) Money market funds, available-for-sale debt investments and equity securities are valued using a market approach based on the quoted market prices or broker/dealer quotes of identical or comparable instruments. Derivatives include foreign currency and commodity contracts. Our foreign currency forward contracts are valued using an income approach based on the present value of the forward rate less the contract rate multiplied by the notional amount. Commodity derivatives are valued using an income approach based on the present value of the commodity index prices less the contract rate multiplied by the notional amount. Certain assets have been measured at fair value on a nonrecurring basis using significant unobservable inputs (Level 3). The following table presents the nonrecurring losses recognized for the years ended December 31 due to long-lived asset impairment, and the fair value and asset classification of the related assets as of the impairment date: 2020 2019 Fair Value Total Losses Fair Value Total Losses Investments $22 ($81) $27 ($109) Customer financing assets 105 (24) $111 (20) Other assets and Acquired intangible assets 298 (221) 4 (310) Property, plant and equipment 79 (84) 41 (4) Total $504 ($410) $183 ($443) Investments, Property, plant and equipment, Other assets and Acquired intangible assets were primarily valued using an income approach based on the discounted cash flows associated with the underlying assets. The fair value of the impaired customer financing assets includes operating lease equipment and investments in sales type-leases/finance leases, and is derived by calculating a median collateral value from a consistent group of third party aircraft value publications. The values provided by the third party aircraft publications are derived from their knowledge of market trades and other market factors. Management reviews the publications quarterly to assess the continued appropriateness and consistency with market trends. Under certain circumstances, we adjust values based on the attributes and condition of the specific aircraft or equipment, usually when the features or use of the aircraft vary significantly from the more generic aircraft attributes covered by third party publications, or on the expected net sales price for the aircraft. For Level 3 assets that were measured at fair value on a nonrecurring basis during the year ended December 31, 2020, the following table presents the fair value of those assets as of the measurement date, valuation techniques and related unobservable inputs of those assets. Fair Valuation Unobservable Input Range Customer financing assets $105 Market approach Aircraft value publications $85 - $169 (1) Median $116 Aircraft condition adjustments ($14) - $3 (2) Net ($11) (1) The range represents the sum of the highest and lowest values for all aircraft subject to fair value measurement, according to the third party aircraft valuation publications that we use in our valuation process. (2) The negative amount represents the sum, for all aircraft subject to fair value measurement, of all downward adjustments based on consideration of individual aircraft attributes and condition. The positive amount represents the sum of all such upward adjustments. Fair Value Disclosures The fair values and related carrying values of financial instruments that are not required to be remeasured at fair value on the Consolidated Statements of Financial Position at December 31 were as follows: December 31, 2020 Carrying Amount Total Fair Value Level 1 Level 2 Level 3 Assets Notes receivable, net $420 $488 $488 Liabilities Debt, excluding finance lease obligations (63,380) (72,357) (72,342) ($15) December 31, 2019 Carrying Amount Total Fair Value Level 1 Level 2 Level 3 Assets Notes receivable, net $443 $444 $444 Liabilities Debt, excluding finance lease obligations and commercial paper (20,964) (23,119) (23,081) ($38) The fair values of notes receivable are estimated with discounted cash flow analysis using interest rates currently offered on loans with similar terms to borrowers of similar credit quality. The fair value of our debt that is traded in the secondary market is classified as Level 2 and is based on current market yields. For our debt that is not traded in the secondary market, the fair value is classified as Level 2 and is based on our indicative borrowing cost derived from dealer quotes or discounted cash flows. The fair values of our debt classified as Level 3 are based on discounted cash flow models using the implied yield from similar securities. With regard to other financial instruments with off-balance sheet risk, it is not practicable to estimate the fair value of our indemnifications and financing commitments because the amount and timing of those arrangements are uncertain. Items not included in the above disclosures include cash, restricted cash, time deposits and other deposits, commercial paper, money market funds, Accounts receivable, Unbilled receivables, Other current assets, Accounts payable and long-term payables. The carrying values of those items, as reflected in the Consolidated Statements of Financial Position, approximate their fair value at December 31, 2020 and 2019. The fair value of assets and liabilities whose carrying value approximates fair value is determined using Level 2 inputs, with the exception of cash (Level 1).

Legal Proceedings

Legal Proceedings	12 Months Ended
	Dec. 31, 2020
Loss Contingency, Information about Litigation Matters [Abstract]
Legal Proceedings	Legal Proceedings Various legal proceedings, claims and investigations related to products, contracts, employment and other matters are pending against us. In addition, we are subject to various U.S. government inquiries and investigations from which civil, criminal or administrative proceedings could result or have resulted in the past. Such proceedings involve or could involve claims by the government for fines, penalties, compensatory and treble damages, restitution and/or forfeitures. Under government regulations, a company, or one or more of its operating divisions or subdivisions, can also be suspended or debarred from government contracts, or lose its export privileges, based on the results of investigations. Except as described below, we believe, based upon current information, that the outcome of any such legal proceeding, claim, or government dispute and investigation will not have a material effect on our financial position, results of operations, or cash flows. Where it is reasonably possible that we will incur losses in excess of recorded amounts in connection with any of the matters set forth below, we will disclose either the amount or range of reasonably possible losses in excess of such amounts or, where no such amount or range can be reasonably estimated, the reasons why no such estimate can be made. Multiple legal actions have been filed against us as a result of the October 29, 2018 accident of Lion Air Flight 610 and the March 10, 2019 accident of Ethiopian Airlines Flight 302. Further, we are subject to, and cooperating with ongoing governmental and regulatory investigations and inquiries relating to the accidents and the 737 MAX, including an investigation by the Securities and Exchange Commission, the outcome of which may be material. Other than with respect to the agreement described below with the U.S. Department of Justice, we cannot reasonably estimate a range of loss, if any, not covered by available insurance that may result given the current status of the pending lawsuits, investigations, and inquiries related to the 737 MAX. On January 6, 2021, we entered into a Deferred Prosecution Agreement with the U.S. Department of Justice that resolves the Department of Justice’s previously disclosed investigation into us regarding the evaluation of the 737 MAX airplane by the Federal Aviation Administration. Under the terms of the Deferred Prosecution Agreement, we agreed to the filing of a criminal information charging the Company with one count of conspiracy to defraud the United States, based on the conduct of two former 737 MAX program technical pilots; the criminal information will be dismissed after three years, provided that we comply with our obligations under the agreement. The Deferred Prosecution Agreement requires that we make payments totaling $2.51 billion, which consist of (a) a $243.6 million criminal monetary penalty; (b) $500 million in additional compensation to the heirs and/or beneficiaries of those who died in the Lion Air Flight 610 and Ethiopian Airlines Flight 302 accidents; and (c) $1.77 billion to the Company’s airline customers for harm incurred as a result of the grounding of the 737 MAX, offset in part by payments already made and the remainder satisfied through payments to be made prior to the termination of the Deferred Prosecution Agreement. The agreement also requires that we review our compliance program and undertake continuous improvement efforts with respect to it, and implement enhanced compliance reporting and internal controls mechanisms. Of the payments described above, $1.77 billion has been included in amounts reserved in prior quarters for 737 MAX customer considerations. We incurred earnings charges equal to the remaining $743.6 million in the fourth quarter of 2020 related to this agreement. During 2019, we entered into agreements with Embraer S.A. (Embraer) to establish joint ventures that included the commercial aircraft and services operations of Embraer, of which we were expected to acquire an 80 percent ownership stake for $4,200, as well as a joint venture to promote and develop new markets for the C-390 Millennium. In 2020, we exercised our contractual right to terminate these agreements based on Embraer’s failure to meet certain required closing conditions. Embraer has disputed our right to terminate the agreements, and the dispute is currently in arbitration. We cannot reasonably estimate a range of loss, if any, that may result from the arbitration.

Segment and Revenue Information

Segment and Revenue Information	12 Months Ended
	Dec. 31, 2020
Segment Reporting [Abstract]
Segment and Revenue Information	Segment and Revenue Information Effective at the beginning of 2020, certain programs were realigned between our BDS segment and Unallocated items, eliminations and other. Business segment data for 2019 and 2018 has been adjusted to reflect the realignment. Our primary profitability measurements to review a segment’s operating results are Earnings/(loss) from operations and operating margins. We operate in four reportable segments: BCA, BDS, BGS, and BCC. All other activities fall within Unallocated items, eliminations and other. See page 67 for the Summary of Business Segment Data, which is an integral part of this note. BCA develops, produces and markets commercial jet aircraft principally to the commercial airline industry worldwide. Revenue on commercial aircraft contracts is recognized at the point in time when an aircraft is completed and accepted by the customer. BDS engages in the research, development, production and modification of the following products and related services: manned and unmanned military aircraft and weapons systems, surveillance and engagement, strategic defense and intelligence systems, satellite systems and space exploration. BDS revenue is generally recognized over the contract term (over time) as costs are incurred. BGS provides parts, maintenance, modifications, logistics support, training, data analytics and information-based services to commercial and government customers worldwide. BGS segment revenue and costs include certain products and services provided to other segments. Revenue on commercial spare parts contracts is recognized at the point in time when a spare part is delivered to the customer. Revenue on other contracts is generally recognized over the contract term (over time) as costs are incurred. BCC facilitates, arranges, structures and provides selective financing solutions for our customers. While our principal operations are in the United States, Canada and Australia, some key suppliers and subcontractors are located in Europe and Japan. Revenues, including foreign military sales, are reported by customer location and consisted of the following: Years ended December 31, 2020 2019 2018 Europe $7,961 $10,366 $12,976 Asia, other than China 4,128 10,662 12,141 Middle East 5,308 9,272 9,745 China 1,803 5,684 13,764 Canada 1,302 2,019 2,583 Oceania 832 2,006 2,298 Africa 114 1,113 1,486 Latin America, Caribbean and other 229 1,015 1,458 Total non-U.S. revenues 21,677 42,137 56,451 United States 36,979 42,681 44,676 Estimated potential concessions and other considerations to 737 MAX customers, net (1) (498) (8,259) Total revenues $58,158 $76,559 $101,127 (1) Net of insurance recoveries Revenues from the U.S. government (including foreign military sales through the U.S. government), primarily recorded at BDS and BGS, represented 51%, 39%, and 31% of consolidated revenues for 2020, 2019, and 2018, respectively. Approximately 4% of operating assets were located outside the United States as of December 31, 2020 and 2019. The following tables present BCA, BDS and BGS revenues from contracts with customers disaggregated in a number of ways, such as geographic location, contract type and the method of revenue recognition. We believe these best depict how the nature, amount, timing and uncertainty of our revenues and cash flows are affected by economic factors. BCA revenues by customer location consisted of the following: Years ended December 31, 2020 2019 2018 Revenue from contracts with customers: Europe $3,872 $5,829 $9,719 Middle East 1,647 5,761 5,876 Asia, other than China 1,408 7,395 8,274 China 1,271 5,051 13,068 Other 513 3,450 5,185 Total non-U.S. revenues 8,711 27,486 42,122 United States 7,899 12,676 15,347 Estimated potential concessions and other considerations to 737 MAX customers, net (1) (498) (8,259) Total revenues from contracts with customers 16,112 31,903 57,469 Intersegment revenues, eliminated on consolidation 50 352 30 Total segment revenues $16,162 $32,255 $57,499 Revenue recognized on fixed-price contracts 100 % 100 % 100 % Revenue recognized at a point in time 100 % 100 % 100 % (1) Net of insurance recoveries BDS revenues on contracts with customers, based on the customer's location, consisted of the following: Years ended December 31, 2020 2019 2018 Revenue from contracts with customers: U.S. customers $19,662 $19,465 $19,488 Non-U.S. customers (1) 6,595 6,630 6,812 Total segment revenue from contracts with customers $26,257 $26,095 $26,300 Revenue recognized over time 98 % 98 % 98 % Revenue recognized on fixed-price contracts 69 % 70 % 70 % Revenue from the U.S. government (1) 89 % 89 % 88 % (1) Includes revenues earned from foreign military sales through the U.S. government. BGS revenues consisted of the following: Years ended December 31, 2020 2019 2018 Revenue from contracts with customers: Commercial $6,936 $10,167 $9,227 Government 8,368 8,107 7,658 Total revenues from contracts with customers 15,304 18,274 16,885 Intersegment revenues eliminated on consolidation 239 194 171 Total segment revenues $15,543 $18,468 $17,056 Revenue recognized at a point in time 47 % 55 % 54 % Revenue recognized on fixed-price contracts 87 % 90 % 90 % Revenue from the U.S. government (1) 41 % 34 % 36 % (1) Includes revenues earned from foreign military sales through the U.S. government. Earnings in Equity Method Investments We recorded Earnings from operations associated with our equity method investments of $86, $90 and $167, primarily in our BDS segment, for the years ended December 31, 2020, 2019 and 2018, respectively. Backlog Our total backlog represents the estimated transaction prices on performance obligations to our customers for which work remains to be performed. Backlog is converted into revenue in future periods as work is performed, primarily based on the cost incurred or at delivery and acceptance of products, depending on the applicable accounting method. Our backlog at December 31, 2020 was $363,404. We expect approximately 20% to be converted to revenue through 2021 and approximately 66% through 2024, with the remainder thereafter. There is significant uncertainty regarding the timing of when backlog will convert into revenue due to the 737 MAX grounding in non-U.S. jurisdictions, entry into service of the 777X, 737 MAX 7 and/or 737 MAX 10, and COVID-19 impacts. Unallocated Items, Eliminations and other Unallocated items, eliminations and other include common internal services that support Boeing’s global business operations, intercompany guarantees provided to BCC and eliminations of certain sales between segments. Such sales include airplanes accounted for as operating leases and considered transferred to the BCC segment. We generally allocate costs to business segments based on the U.S. federal cost accounting standards. Components of Unallocated items, eliminations and other are shown in the following table. Years ended December 31, 2020 2019 2018 Share-based plans ($120) ($65) ($76) Deferred compensation (93) (174) (19) Amortization of previously capitalized interest (95) (89) (92) Research and development expense, net (240) (401) (144) Customer financing impairment (250) Litigation (109) (148) Eliminations and other unallocated items (1,807) (985) (998) Unallocated items, eliminations and other ($2,355) ($2,073) ($1,477) Pension FAS/CAS service cost adjustment $1,024 $1,071 $1,005 Postretirement FAS/CAS service cost adjustment 359 344 322 FAS/CAS service cost adjustment $1,383 $1,415 $1,327 Pension and Other Postretirement Benefit Expense Pension costs, comprising GAAP service and prior service costs, are allocated to BCA and the commercial operations at BGS. Pension costs are allocated to BDS and BGS businesses supporting government customers using U.S. Government Cost Accounting Standards (CAS), which employ different actuarial assumptions and accounting conventions than GAAP. These costs are allocable to government contracts. Other postretirement benefit costs are allocated to business segments based on CAS, which is generally based on benefits paid. FAS/CAS service cost adjustment represents the difference between the Financial Accounting Standards (FAS) pension and postretirement service costs calculated under GAAP and costs allocated to the business segments. Non-operating pension and postretirement expenses represent the components of net periodic benefit costs other than service cost. These expenses are included in Other income, net. Assets Segment assets are summarized in the table below. December 31, 2020 2019 Commercial Airplanes $77,973 $73,995 Defense, Space & Security 14,256 15,757 Global Services 17,399 18,605 Boeing Capital 1,978 2,269 Unallocated items, eliminations and other 40,530 22,999 Total $152,136 $133,625 Assets included in Unallocated items, eliminations and other primarily consist of Cash and cash equivalents, Short-term and other investments, tax assets, capitalized interest, assets managed centrally on behalf of the four principal business segments and intercompany eliminations. From December 31, 2019 to December 31, 2020, assets in BCA increased primarily due to higher inventory balances and assets in Unallocated items, eliminations, and other increased due to higher cash and short-term investment balances from debt issued throughout 2020. Capital Expenditures Years ended December 31, 2020 2019 2018 Commercial Airplanes $322 $433 $604 Defense, Space & Security 172 189 201 Global Services 127 218 231 Unallocated items, eliminations and other 682 994 686 Total $1,303 $1,834 $1,722 Capital expenditures for Unallocated items, eliminations and other relate primarily to assets managed centrally on behalf of the four principal business segments. Depreciation and Amortization Years ended December 31, 2020 2019 2018 Commercial Airplanes $559 $580 $565 Defense, Space & Security 251 256 270 Global Services 408 424 348 Boeing Capital Corporation 66 64 58 Centrally Managed Assets (1) 962 947 873 Total $2,246 $2,271 $2,114 (1) Amounts shown in the table represent depreciation and amortization expense recorded by the individual business segments. Depreciation and amortization for centrally managed assets are included in segment operating earnings based on usage and occupancy. In 2020, $689 was included in the primary business segments, of which $397, $236, and $56 was included in BCA, BDS and BGS, respectively. In 2019, $717 was included in the primary business segments, of which $407, $257, and $53 was included in BCA, BDS and BGS, respectively. In 2018, $692 was included in the primary business segments, of which $417, $213, and $62 was included in BCA, BDS and BGS, respectively.

Quarterly Financial Data

Quarterly Financial Data	12 Months Ended
	Dec. 31, 2020
Quarterly Financial Information Disclosure [Abstract]
Quarterly Financial Data (unaudited)	Note 23 – Quarterly Financial Data (Unaudited) 2020 2019 4th 3rd 2nd 1st 4th 3rd 2nd 1st Total revenues $15,304 $14,139 $11,807 $16,908 $17,911 $19,980 $15,751 $22,917 Total costs and expenses (20,992) (13,105) (12,978) (16,768) (18,708) (16,930) (17,810) (18,645) (Loss)/earnings from operations (8,049) (401) (2,964) (1,353) (2,204) 1,259 (3,380) 2,350 Net (loss)/earnings attributable to Boeing Shareholders (8,420) (449) (2,376) (628) (1,010) 1,167 (2,942) 2,149 Basic (loss)/earnings per share (14.65) (0.79) (4.20) (1.11) (1.79) 2.07 (5.21) 3.79 Diluted (loss)/earnings per share (14.65) (0.79) (4.20) (1.11) (1.79) 2.05 (5.21) 3.75 Gross profit is calculated as Total revenues minus Total costs and expenses. Total costs and expenses includes Cost of products, Cost of services and Boeing Capital interest expense. During the first quarter of 2020, we recorded $797 of abnormal production costs related to 737 MAX, $336 related to 737NG frame fitting component repair costs, $137 of abnormal production costs from the temporary suspension of Puget Sound production in response to COVID-19, and a $168 reach-forward loss on VC-25B. During the first quarter of 2019, we concluded that lease incentives granted to a customer that experienced liquidity issues were impaired and recorded a charge of $250. During the second quarter of 2020, we recorded $859 of charges at BGS related to asset impairments, $712 of abnormal production costs related to the 737 MAX, $652 of severance costs, and $133 of abnormal production costs from the temporary suspension of Puget Sound production in response to COVID-19. During the second quarter of 2019, we recorded a charge of $109 related to ongoing litigation associated with recoverable costs on U.S. government contracts. During the third quarter of 2020, we recorded $590 of abnormal production costs related to the 737 MAX and $328 of severance costs. During the fourth quarter of 2020, we recorded a reach-forward loss on the 777X program of $6,493, abnormal production costs related to the 737 MAX of $468 and asset impairments of $290 at BGS. Additionally, we recorded an increase to our valuation allowances and a tax benefit of $587 related to the settlement of the 2015-2017 federal tax audit. See Note 4. During the fourth quarter of 2019, we recorded a divestiture gain of $395 and a tax benefit of $371 related to the settlement of state tax audits spanning 15 tax years. Additionally, we recorded an impairment of $293 as a result of our decision to retire the Aviall brand and trade name, and an increase to the reach-forward loss on Commercial Crew of $410. We recorded a reduction to revenue in the second and fourth quarters of 2020 of $551 and $128 for 737 MAX customer considerations. In the third quarter of 2020, we recorded an increase to revenue of $151 for 737 MAX customer considerations. During the second and fourth quarters of 2019, we recorded a reduction to revenue of $5,610 and $2,619 for 737 MAX customer considerations, net of insurance recoveries. We recorded an increase to the reach-forward loss on KC-46A Tanker in the first, second, third, and fourth quarters of 2020 of $827, $151, $67 and $275, respectively. In the fourth quarter of 2019, we recorded an increase to the reach-forward loss on KC-46A Tanker of $108.

Summary Of Significant Accoun_2

Summary Of Significant Accounting Policies (Policy)	12 Months Ended
	Dec. 31, 2020
Accounting Policies [Abstract]
Principles Of Consolidation And Basis Of Presentation	Principles of Consolidation and Basis of PresentationThe Consolidated Financial Statements included in this report have been prepared by management of The Boeing Company (herein referred to as “Boeing,” the “Company,” “we,” “us,” or “our”). These statements include the accounts of all majority-owned subsidiaries and variable interest entities that are required to be consolidated. All significant intercompany accounts and transactions have been eliminated. As described in Note 22, we operate in four reportable segments: Commercial Airplanes (BCA); Defense, Space & Security (BDS), Global Services (BGS), and Boeing Capital (BCC). Effective at the beginning of 2020, certain programs were realigned between our BDS segment and Unallocated items, eliminations and other. Amounts in prior periods have been reclassified to conform to the current year presentation
Use Of Estimates	Use of EstimatesThe preparation of financial statements in conformity with U.S. generally accepted accounting principles (GAAP) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. We believe that the accounting estimates and assumptions are appropriate given the increased uncertainties surrounding the severity and duration of the impacts of the COVID-19 pandemic, however actual results could differ from those estimates.
Operating Cycle	Operating Cycle For classification of certain current assets and liabilities, we use the duration of the related contract or program as our operating cycle, which is generally longer than one year.
New Accounting Pronouncements, Policy [Policy Text Block]	Standards Issued and Implemented In the first quarter of 2020, we adopted ASU 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, using a modified retrospective method, which resulted in the recognition of allowances for credit losses on our Consolidated Statement of Financial Position as of January 1, 2020 and a $162 cumulative-effect adjustment to retained earnings to align our credit loss methodology with the new standard. The standard replaces the incurred loss impairment methodology under Topic 310 with a methodology that reflects expected credit losses and requires the use of a forward-looking expected credit loss model for accounts receivables, loans, and certain other financial assets. See Notes 5, 6, 9 and 14 for additional disclosures. In the first quarter of 2020, we also adopted ASU 2017-04, Intangibles-Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment. The standard simplifies the quantitative impairment test from a two-step process to a one-step process. The quantitative test is performed by comparing the carrying value of net assets to the estimated fair value of the related operations. If the fair value is determined to be less than carrying value, the shortfall up to the carrying value of the goodwill represents the amount of goodwill impairment. The standard continues to permit a company to test goodwill for impairment by performing a qualitative assessment or using the quantitative test.
Revenue And Related Cost Recognition	Revenue and Related Cost Recognition Commercial aircraft contracts The majority of our BCA segment revenue is derived from commercial aircraft contracts. For each contract, we determine the transaction price based on the consideration expected to be received. We allocate the transaction price to each commercial aircraft performance obligation based on relative standalone selling prices adjusted by an escalation formula as specified in the customer agreement. Revenue is recognized for each commercial aircraft performance obligation at the point in time when the aircraft is completed and accepted by the customer. We use program accounting to determine the amount reported as cost of sales. In certain situations, where an aircraft is still in our possession, and title and risk of loss has passed to the customer (known as a bill-and-hold arrangement), revenue will be recognized when all specific requirements for transfer of control under a bill-and-hold arrangement have been met. Payments for commercial aircraft sales are received in accordance with the customer agreement, which generally includes a deposit upon order and additional payments in accordance with a payment schedule, with the balance being due immediately prior to or at aircraft delivery. Advances and progress billings (contract liabilities) are normal and customary for commercial aircraft contracts and not considered a significant financing component as they are intended to protect us from the other party failing to adequately complete some or all of its obligations under the contract. Long-term contracts Substantially all contracts at BDS and certain contracts at BGS are long-term contracts with the U.S. government and other customers that generally extend over several years. Products sales under long-term contracts primarily include fighter jets, rotorcraft, cybersecurity products, surveillance suites, advanced weapons, missile defense, military derivative aircraft, satellite systems, and modification of commercial passenger aircraft to cargo freighters. Services sales under long-term contracts primarily include support and maintenance agreements associated with our commercial and defense products and space travel on Commercial Crew. For each long-term contract, we determine the transaction price based on the consideration expected to be received. We allocate the transaction price to each distinct performance obligation to deliver a good or service, or a collection of goods and/or services, based on the relative standalone selling prices. A long-term contract will typically represent a single distinct performance obligation due to the highly interdependent and interrelated nature of the underlying goods and/or services and the significant service of integration that we provide. While the scope and price on certain long-term contracts may be modified over their life, the transaction price is based on current rights and obligations under the contract and does not include potential modifications until they are agreed upon with the customer. When applicable, a cumulative adjustment or separate recognition for the additional scope and price may result. Long-term contracts can be negotiated with a fixed price or a price in which we are reimbursed for costs incurred plus an agreed upon profit. The Federal Acquisition Regulations provide guidance on the types of cost that will be reimbursed in establishing the price for contracts with the U.S. government. Certain long-term contracts include in the transaction price variable consideration, such as incentive and award fees, if specified targets are achieved. The amount included in the transaction price represents the expected value, based on a weighted probability, or the most likely amount. Long-term contract revenue is recognized over the contract term (over time) as the work progresses, either as products are produced or as services are rendered. We generally recognize revenue over time as we perform on long-term contracts because of continuous transfer of control to the customer. For U.S. government contracts, this continuous transfer of control to the customer is supported by clauses in the contract that allow the customer to unilaterally terminate the contract for convenience, pay us for costs incurred plus a reasonable profit and take control of any work in process. Similarly, for non-U.S. government contracts, the customer typically controls the work in process as evidenced either by contractual termination clauses or by our rights to payment of the transaction price associated with work performed to date on products or services that do not have an alternative use to the Company. The accounting for long-term contracts involves a judgmental process of estimating total sales, costs and profit for each performance obligation. Cost of sales is recognized as incurred. The amount reported as revenues is determined by adding a proportionate amount of the estimated profit to the amount reported as cost of sales. Recognizing revenue as costs are incurred provides an objective measure of progress on the long-term contract and thereby best depicts the extent of transfer of control to the customer. Changes in estimated revenues, cost of sales and the related effect on operating income are recognized using a cumulative catch-up adjustment which recognizes in the current period the cumulative effect of the changes on current and prior periods based on a long-term contract’s percentage-of-completion. When the current estimates of total sales and costs for a long-term contract indicate a loss, a provision for the entire reach-forward loss on the long-term contract is recognized. Net cumulative catch-up adjustments to prior years' revenue and earnings, including certain reach-forward losses, across all long-term contracts were as follows: 2020 2019 2018 (Decrease)/Increase to Revenue ($359) $54 $137 Increase to Loss/decrease to Earnings from operations ($942) ($111) ($190) Decrease to Diluted EPS ($1.37) ($0.06) ($0.29) Significant adjustments during the three years ended December 31, 2020 included reach-forward losses of $953, $148 and $736 on KC-46A Tanker recorded during 2020, 2019, and 2018, as well as reach-forward losses on Commercial Crew of $489 during 2019. Due to the significance of judgment in the estimation process, changes in underlying assumptions/estimates, supplier performance, or circumstances may adversely or positively affect financial performance in future periods. Payments under long-term contracts may be received before or after revenue is recognized. The U.S. government customer typically withholds payment of a small portion of the contract price until contract completion. Therefore, long-term contracts typically generate Unbilled receivables (contract assets) but may generate Advances and progress billings (contract liabilities). Long-term contract Unbilled receivables and Advances and progress billings are not considered a significant financing component because they are intended to protect either the customer or the Company in the event that some or all of the obligations under the contract are not completed. Commercial spare parts contracts Certain contracts at our BGS segment include sales of commercial spare parts. For each contract, we determine the transaction price based on the consideration expected to be received. The spare parts have discrete unit prices that represent fair value. We generally consider each spare part to be a separate performance obligation. Revenue is recognized for each commercial spare part performance obligation at the point in time of delivery to the customer. We may provide our customers with a right to return a commercial spare part where a customer may receive a full or partial refund, a credit applied to amounts owed, a different product in exchange, or any combination of these items. We consider the potential for customer returns in the estimated transaction price. The amount reported as cost of sales is recorded at average cost. Payments for commercial spare parts sales are typically received shortly after delivery. Other service revenue contracts Certain contracts at our BGS segment are for sales of services to commercial customers including maintenance, training, data analytics and information-based services. We recognize revenue for these service performance obligations over time as the services are rendered. The method of measuring progress (such as straight-line or billable amount) varies depending upon which method best depicts the transfer of control to the customer based on the type of service performed. Cost of sales is recorded as incurred. Concession Sharing Arrangements We account for sales concessions to our customers in consideration of their purchase of products and services as a reduction of the transaction price and the revenue that is recognized for the related performance obligations. The sales concessions incurred may be partially reimbursed by certain suppliers in accordance with concession sharing arrangements. We record these reimbursements, which are presumed to represent reductions in the price of the vendor’s products or services, as a reduction in Cost of products. Unbilled Receivables and Advances and Progress Billings Unbilled receivables (contract assets) arise when the Company recognizes revenue for amounts which cannot yet be billed under terms of the contract with the customer. Advances and progress billings (contract liabilities) arise when the Company receives payments from customers in advance of recognizing revenue. The amount of Unbilled receivables or Advances and progress billings is determined for each contract. Financial Services Revenue We record financial services revenue associated with sales-type/finance leases, operating leases, and notes receivable. Lease and financing revenue arrangements are included in Sales of services on the Consolidated Statements of Operations. For sales-type/finance leases, we record financing receivables at lease inception. A financing receivable is recorded at the aggregate of future minimum lease payments, estimated residual value of the leased equipment, and deferred incremental direct costs less unearned income. Income is recognized over the life of the lease to approximate a level rate of return on the net investment. Income recognition is generally suspended for financing receivables at the date full recovery of income and principal becomes not probable. Income is recognized when financing receivables become contractually current and performance is demonstrated by the customer . Residual values, which are reviewed periodically, represent the estimated amount we expect to receive at lease termination from the disposition of the leased equipment. Actual residual values realized could differ from these estimates. Declines in estimated residual value that are deemed other-than-temporary are recognized in the period in which the declines occur. For operating leases, revenue on leased aircraft and equipment is recorded on a straight-line basis over the term of the lease. Operating lease assets, included in Customer financing, are recorded at cost and depreciated over the period that we project we will hold the asset to an estimated residual value, using the straight-line method. We periodically review our estimates of residual value and recognize forecasted changes by prospectively adjusting depreciation expense. For notes receivable, notes are recorded net of any unamortized discounts and deferred incremental direct costs. Interest income and amortization of any discounts are recorded ratably over the related term of the note. Reinsurance Revenue Our wholly-owned insurance subsidiary, Astro Ltd., participates in a reinsurance pool for workers’ compensation. The member agreements and practices of the reinsurance pool minimize any participating members’ individual risk. Reinsurance revenues were $129, $151 and $145 during 2020, 2019 and 2018, respectively. Reinsurance costs related to premiums and claims paid to the reinsurance pool were $136, $150 and $136 during 2020, 2019 and 2018, respectively. Revenues and costs are presented net in Cost of sales in the Consolidated Statements of Operations.
Fleet Support	Fleet Support We provide assistance and support to facilitate efficient and safe aircraft operation to the operators of all our commercial airplane models. Collectively known as fleet support, these activities and support services include flight and maintenance training, field service support, engineering support, and technical data and documents. Fleet support activity begins prior to aircraft delivery as the customer receives training, manuals, and technical consulting support. This activity continues throughout the aircraft’s operational life. Services provided after delivery include field service support, consulting on maintenance, repair, and operational issues brought forth by the customer or regulators, updating manuals and engineering data, and the issuance of service bulletins that impact the entire model’s fleet. Field service support involves our personnel located at customer facilities providing and coordinating fleet support activities and requests. The costs for fleet support are expensed as incurred as Cost of services.
Research And Development	Research and Development Research and development includes costs incurred for experimentation, design, and testing, as well as bid and proposal efforts related to government products and services which are expensed as incurred unless the costs are related to certain contractual arrangements with customers. Costs that are incurred pursuant to such contractual arrangements are recorded over the period that revenue is recognized, consistent with our contract accounting policy. We have certain research and development arrangements that meet the requirement for best efforts research and development accounting. Accordingly, the amounts funded by the customer are recognized as an offset to our research and development expense rather than as contract revenues. Research and development expense included bid and proposal costs of $224, $214 and $234 in 2020, 2019 and 2018, respectively.
Share-Based Compensation	Share-Based Compensation We provide various forms of share-based compensation to our employees. For awards settled in shares, we measure compensation expense based on the grant-date fair value net of estimated forfeitures. For awards settled in cash, or that may be settled in cash, we measure compensation
Income Taxes	Income Taxes Provisions for U.S. federal, state and local, and non-U.S. income taxes are calculated on reported (Loss)/earnings before income taxes based on current tax law and also include, in the current period, the cumulative effect of any changes in tax rates from those used previously in determining deferred tax assets and liabilities. Such provisions differ from the amounts currently receivable or payable because certain items of income and expense are recognized in different time periods for financial reporting purposes than for income tax purposes. Significant judgment is required in determining income tax provisions and evaluating tax positions. The accounting for uncertainty in income taxes requires a more-likely-than-not threshold for financial statement recognition and measurement of tax positions taken or expected to be taken in a tax return. We record a liability for the difference between the benefit recognized and measured for financial statement purposes and the tax position taken or expected to be taken on our tax return. To the extent that our assessment of such tax positions changes, the change in estimate is recorded in the period in which the determination is made. Tax-related interest and penalties are classified as a component of Income tax benefit/(expense). We also assess the likelihood that we will be able to recover our deferred tax assets against future sources of taxable income and reduce the carrying amounts of deferred tax assets by recording a valuation allowance if, based on the available evidence, it is more likely than not that all or a portion of such assets will not be realized. Changes in our estimates and judgments regarding realization of deferred tax assets may result in an increase or decrease to our tax expense and/or other comprehensive income, which would be recorded in the period in which the change occurs.
Postretirement Plans	Postretirement Plans Many of our employees have earned benefits under defined benefit pension plans. Nonunion and the majority of union employees that had participated in defined benefit pension plans transitioned to a company-funded defined contribution retirement savings plan in 2016. Additional union employees transitioned to company-funded defined contribution retirement savings plans effective January 1, 2019. We also provide postretirement benefit plans other than pensions, consisting principally of health care coverage to eligible retirees and qualifying dependents. Benefits under the pension and other postretirement benefit plans are generally based on age at retirement and years of service and, for some pension plans, benefits are also based on the employee’s annual earnings. The net periodic cost of our pension and other postretirement plans is determined using the projected unit credit method and several actuarial assumptions, the most significant of which are the discount rate, the long-term rate of asset return, and medical trend (rate of growth for medical costs). A portion of the service cost component of net periodic pension and other postretirement income or expense is not recognized in net earnings in the year incurred because it is allocated to production as product costs, and reflected in inventory at the end of a reporting period. Actuarial gains and losses, which occur when actual experience differs from actuarial assumptions, are reflected in Shareholders’ equity (net of taxes). If actuarial gains and losses exceed ten percent of the greater of plan assets or plan liabilities we amortize them over the average expected future lifetime of participants. The funded status of our pension and postretirement plans is reflected on the Consolidated Statements of Financial Position.
Postemployment Plans	Postemployment Plans We record a liability for postemployment benefits, such as severance or job training, when payment is probable, the amount is reasonably estimable, and the obligation relates to rights that have vested or accumulated.
Environmental Remediation	Environmental Remediation We are subject to federal and state requirements for protection of the environment, including those for discharge of hazardous materials and remediation of contaminated sites. We routinely assess, based on in-depth studies, expert analyses and legal reviews, our contingencies, obligations, and commitments for remediation of contaminated sites, including assessments of ranges and probabilities of recoveries from other responsible parties and/or insurance carriers. Our policy is to accrue and charge to current expense identified exposures related to environmental remediation sites when it is probable that a liability has been incurred and the amount can be reasonably estimated. The amount of the liability is based on our best estimate or the low end of a range of reasonably possible exposure for investigation, cleanup, and monitoring costs to be incurred. Estimated remediation costs are not discounted to present value as the timing of payments cannot be reasonably estimated. We may be able to recover a portion of the remediation costs from insurers or other third parties. Such recoveries are recorded when realization of the claim for recovery is deemed probable.
Cash And Cash Equivalents	Cash and Cash Equivalents Cash and cash equivalents consist of highly liquid instruments, such as commercial paper, time deposits, and other money market instruments, which have original maturities of three months or less. We aggregate our cash balances by bank where conditions for right of set-off are met, and reclassify any negative balances, consisting mainly of uncleared checks, to Accounts payable. Negative balances reclassified to Accounts payable were $74 and $101 at December 31, 2020 and 2019.
Inventories	Inventories Inventoried costs on commercial aircraft programs and long-term contracts include direct engineering, production and tooling and other non-recurring costs, and applicable overhead, which includes fringe benefits, production related indirect and plant management salaries and plant services, not in excess of estimated net realizable value. To the extent a material amount of such costs are related to an abnormal event or are fixed costs not appropriately attributable to our programs or contracts, they are expensed in the current period rather than inventoried. Inventoried costs include amounts relating to programs and contracts with long-term production cycles, a portion of which is not expected to be realized within one year. Included in inventory for federal government contracts is an allocation of allowable costs related to manufacturing process reengineering. Commercial aircraft programs inventory includes deferred production costs and supplier advances. Deferred production costs represent actual costs incurred for production of early units that exceed the estimated average cost of all units in the program accounting quantity. Higher production costs are experienced at the beginning of a new or derivative airplane program. Units produced early in a program require substantially more effort (labor and other resources) than units produced later in a program because of volume efficiencies and the effects of learning. We expect that these deferred costs will be fully recovered when all units included in the accounting quantity are delivered as the expected unit cost for later deliveries is below the estimated average cost of all units in the program. Supplier advances represent payments for parts we have contracted to receive from suppliers in the future. As parts are received, supplier advances are amortized to work in process. The determination of net realizable value of long-term contract costs is based upon quarterly reviews that estimate costs to be incurred to complete all contract requirements. When actual contract costs and the estimate to complete exceed total estimated contract revenues, a loss provision is recorded. The determination of net realizable value of commercial aircraft program costs is based upon quarterly program reviews that estimate revenue and cost to be incurred to complete the program accounting quantity. When estimated costs to complete exceed estimated program revenues to go, a program loss provision is recorded in the current period for the estimated loss on all undelivered units in the accounting quantity. Used aircraft purchased by the Commercial Airplanes segment and general stock materials are stated at cost not in excess of net realizable value. See ‘Aircraft Valuation’ within this Note for a discussion of our valuation of used aircraft. Spare parts inventory is stated at lower of average unit cost or net realizable value. We review our commercial spare parts and general stock materials quarterly to identify impaired inventory, including excess or obsolete inventory, based on historical sales trends, expected production usage, and the size and age of the aircraft fleet using the part. Impaired inventories are charged to Cost of products in the period the impairment occurs. Included in inventory for commercial aircraft programs are amounts paid or credited in cash, or other consideration to certain airline customers, that are referred to as early issue sales consideration. Early issue sales consideration is recognized as a reduction to revenue when the delivery of the aircraft under contract occurs. If an airline customer does not perform and take delivery of the contracted aircraft, we believe that we would have the ability to recover amounts paid. However, to the extent early issue sales consideration exceeds advances and is not considered to be otherwise recoverable, it would be written off in the current period.
Precontract Costs	Precontract Costs We may, from time to time, incur costs in excess of the amounts required for existing contracts. If we determine the costs are probable of recovery from future orders, then we capitalize the precontract costs we incur, excluding start-up costs which are expensed as incurred. Capitalized precontract costs are included in Inventories in the accompanying Consolidated Statements of Financial Position. Should future orders not materialize or we determine the costs are no longer probable of recovery, the capitalized costs would be written off.
Property, Plant And Equipment	Property, Plant and Equipment Property, plant and equipment are recorded at cost, including applicable construction-period interest, less accumulated depreciation and are depreciated principally over the following estimated useful lives: new buildings and land improvements, from 10 to 40 years; and new machinery and equipment, from 4 to 20 years. The principal methods of depreciation are as follows: buildings and land improvements, 150% declining balance; and machinery and equipment, sum-of-the-years’ digits. Capitalized internal use software is included in Other assets and amortized using the straight line method over 5 years. Capitalized software as a service is included in Other assets and amortized using the straight line method over the term of the hosting arrangement which is typically no greater than 10 years. We periodically evaluate the appropriateness of remaining depreciable lives assigned to long-lived assets, including assets that may be subject to a management plan for disposition. Long-lived assets held for sale are stated at the lower of cost or fair value less cost to sell. Long-lived assets held for use are subject to an impairment assessment whenever events or changes in circumstances indicate that the carrying amount may not be recoverable. If the carrying value is no longer recoverable based upon the undiscounted future cash flows of the asset, the amount of the impairment is the difference between the carrying amount and the fair value of the asset.
Lessee, Leases	Leases We determine if an arrangement is, or contains, a lease at the inception date. Operating leases are included in Other assets, with the related liabilities included in Accrued liabilities and Other long-term liabilities. Assets under finance leases, which primarily represent computer equipment, are included in Property, plant and equipment, net, with the related liabilities included in Short-term debt and current portion of long-term debt and Long-term debt on the Consolidated Statements of Financial Position. Operating lease assets represent our right to use an underlying asset for the lease term and lease liabilities represent our obligation to make lease payments arising from the lease. Operating lease assets and liabilities are recognized at the lease commencement date based on the estimated present value of lease payments over the lease term. We use our estimated incremental borrowing rate in determining the present value of lease payments. Variable components of the lease payments such as fair market value adjustments, utilities, and maintenance costs are expensed as incurred and not included in determining the present value. Our lease terms include options to extend or terminate the lease when it is reasonably certain that we will exercise that option. Lease expense is recognized on a straight-line basis over the lease term. We have lease agreements with lease and non-lease components which are accounted for as a single lease component.
Asset Retirement Obligations	Asset Retirement Obligations We record all known asset retirement obligations for which the liability’s fair value can be reasonably estimated, including certain asbestos removal, asset decommissioning and contractual lease restoration obligations. Recorded amounts are not material. We also have known conditional asset retirement obligations, such as certain asbestos remediation and asset decommissioning activities to be performed in the future, that are not reasonably estimable due to insufficient information about the timing and method of settlement of the obligation. Accordingly, these obligations have not been recorded in the Consolidated Financial Statements. A liability for these obligations will be recorded in the period when sufficient information regarding timing and method of settlement becomes available to make a reasonable estimate of the liability’s fair value. In addition, there may be conditional asset retirement obligations that we have not yet discovered (e.g. asbestos may exist in certain buildings but we have not become aware of it through the normal course of business), and therefore, these obligations also have not been included in the Consolidated Financial Statements.
Goodwill And Other Acquired Intangibles	Goodwill and Other Acquired Intangibles Goodwill and other acquired intangible assets with indefinite lives are not amortized, but are tested for impairment annually and when an event occurs or circumstances change such that it is more likely than not that an impairment may exist. Our annual testing date is April 1. We test goodwill for impairment by performing a qualitative assessment or using a quantitative test. If we choose to perform a qualitative assessment and determine it is more likely than not that the carrying value of the net assets is more than the fair value of the related operations, the quantitative test is then performed; otherwise, no further testing is required. For operations where the quantitative test is used, we compare the carrying value of net assets to the estimated fair value of the related operations. If the fair value is determined to be less than carrying value, the shortfall up to the carrying value of the goodwill represents the amount of goodwill impairment. Indefinite-lived intangibles consist of a brand and trade name and in-process research and development (IPR&D) acquired in business combinations. IPR&D is initially capitalized at fair value as an intangible asset with an indefinite life and assessed for impairment thereafter. IPR&D is reclassified to finite-lived acquired intangible assets when a project is completed, and then amortized on a straight-line basis over the asset’s estimated useful life. We test these intangibles for impairment by comparing the carrying values to current projections of related discounted cash flows. Any excess carrying value over the amount of discounted cash flows represents the amount of the impairment. Our finite-lived acquired intangible assets are amortized on a straight-line basis over their estimated useful lives as follows: developed technology, from 4 to 14 years; product know-how, from 6 to 30 years; customer base, from 3 to 17 years; distribution rights, from 3 to 27 years; and other, from 1 to 32 years. We evaluate the potential impairment of finite-lived acquired intangible assets whenever events or changes in circumstances indicate that the carrying amount may not be recoverable. If the carrying
Investments	Investments Time deposits are held-to-maturity investments that are carried at cost. Available-for-sale debt securities include commercial paper, U.S. government agency securities, and corporate debt securities. Available-for-sale debt securities are recorded at fair value, and unrealized gains and losses are recorded, net of tax, as a component of accumulated other comprehensive income. Realized gains and losses on available-for-sale debt securities are recognized based on the specific identification method. Available-for-sale debt securities are assessed for impairment quarterly. The equity method of accounting is used to account for investments for which we have the ability to exercise significant influence, but not control, over an investee. Significant influence is generally deemed to exist if we have an ownership interest in the voting stock of an investee of between 20% and 50%. The cumulative earnings approach is used for cash flow classification of distributions received from equity method investments. Other Equity investments are recorded at fair value, with gains and losses recorded through net earnings. Equity investments without readily determinable fair value are measured at cost, less impairments, plus or minus observable price changes. Equity investments without readily determinable fair value are assessed for impairment quarterly. We classify investment income and loss on our Consolidated Statements of Operations based on whether the investment is operating or non-operating in nature. Operating investments align strategically and are integrated with our operations. Earnings from operating investments, including our share of income or loss from equity method investments, dividend income from other equity investments, and any impairments or gain/loss on the disposition of these investments, are recorded in Income from operating investments, net. Non-operating investments are those we hold for non-strategic purposes. Earnings from non-operating investments, including interest and dividends on marketable securities, and any impairments or gain/loss on the disposition of these investments are recorded in Other income/(loss), net.
Derivatives	Derivatives All derivative instruments are recognized in the financial statements and measured at fair value regardless of the purpose or intent of holding them. We use derivative instruments to principally manage a variety of market risks. For our cash flow hedges, the derivative’s gain or loss is initially reported in comprehensive income and is subsequently reclassified into earnings in the same period or periods during which the hedged forecasted transaction affects earnings. We have agreements to purchase and sell aluminum to address long-term strategic sourcing objectives and international business requirements. These agreements are derivatives for accounting purposes but are not designated for hedge accounting treatment. We also hold certain derivative instruments for economic purposes that are not designated for hedge accounting treatment. For these aluminum agreements and for other derivative instruments not designated for hedge accounting treatment, the changes in their fair value are recorded in earnings immediately.
Credit Loss, Financial Instrument	Allowances for losses on certain financial assets We establish allowances for credit losses on accounts receivable, unbilled receivables, customer financing receivables, and certain other financial assets. The adequacy of these allowances are assessed quarterly through consideration of factors including, but not limited to, customer credit ratings, bankruptcy filings, published or estimated credit default rates, age of the receivable, expected loss rates
Aircraft Valuation	Aircraft Valuation Used aircraft under trade-in commitments and aircraft under repurchase commitments In conjunction with signing a definitive agreement for the sale of new aircraft (Sale Aircraft), we have entered into trade-in commitments with certain customers that give them the right to trade in used aircraft at a specified price upon the purchase of Sale Aircraft. Additionally, we have entered into contingent repurchase commitments with certain customers wherein we agree to repurchase the Sale Aircraft at a specified price, generally 10 to 15 years after delivery of the Sale Aircraft. Our repurchase of the Sale Aircraft is contingent upon a future, mutually acceptable agreement for the sale of additional new aircraft. If we execute an agreement for the sale of additional new aircraft, and if the customer exercises its right to sell the Sale Aircraft to us, a contingent repurchase commitment would become a trade-in commitment. Our historical experience is that contingent repurchase commitments infrequently become trade-in commitments. Exposure related to trade-in commitments may take the form of: (1) adjustments to revenue for the difference between the contractual trade-in price in the definitive agreement and our best estimate of the fair value of the trade-in aircraft as of the date of such agreement, which would be recognized upon delivery of the Sale Aircraft, and/or (2) charges to cost of products for adverse changes in the fair value of trade-in aircraft that occur subsequent to signing of a definitive agreement for Sale Aircraft but prior to the purchase of the used trade-in aircraft. Estimates based on current aircraft values would be included in Accrued liabilities. The fair value of trade-in aircraft is determined using aircraft-specific data such as model, age and condition, market conditions for specific aircraft and similar models, and multiple valuation sources. This process uses our assessment of the market for each trade-in aircraft, which in most instances begins years before the return of the aircraft. There are several possible markets in which we continually pursue opportunities to place used aircraft. These markets include, but are not limited to, the resale market, which could potentially include the cost of long-term storage; the leasing market, with the potential for refurbishment costs to meet the leasing customer’s requirements; or the scrap market. Trade-in aircraft valuation varies significantly depending on which market we determine is most likely for each aircraft. On a quarterly basis, we update our valuation analysis based on the actual activities associated with placing each aircraft into a market or using current published third-party aircraft valuations based on the type and age of the aircraft, adjusted for individual attributes and known conditions. Used aircraft acquired by the Commercial Airplanes segment are included in Inventories at the lower of cost or net realizable value as it is our intent to sell these assets. To mitigate costs and enhance marketability, aircraft may be placed on operating lease. While on operating lease, the assets are included in Customer financing. Customer financing Customer financing includes operating lease equipment, notes receivable, and sales-type/finance leases. Sales-type/finance leases are treated as receivables, and allowances for losses are established as necessary. We assess the fair value of the assets we own, including equipment under operating leases, assets held for sale or re-lease, and collateral underlying receivables, to determine if their fair values are less than the related assets’ carrying values. Differences between carrying values and fair values of sales-type/finance leases and notes and other receivables, as determined by collateral value, are considered in determining the allowance for losses on receivables. We use a median calculated from published collateral values from multiple third-party aircraft value publications based on the type and age of the aircraft to determine the fair value of aircraft. Under certain circumstances, we apply judgment based on the attributes of the specific aircraft or equipment, usually when the features or use of the aircraft vary significantly from the more generic aircraft attributes covered by outside publications. Impairment review for assets under operating leases and held for sale or re-lease We evaluate for impairment assets under operating lease or assets held for sale or re-lease when events or changes in circumstances indicate that the expected undiscounted cash flow from the asset may be less than the carrying value. We use various assumptions when determining the expected undiscounted cash flow, including our intentions for how long we will hold an asset subject to operating lease before it is sold, the expected future lease rates, lease terms, residual value of the asset, periods in which the asset may be held in preparation for a follow-on lease, maintenance costs, remarketing costs and the remaining economic life of the asset. We record assets held for sale at the lower of carrying value or fair value less costs to sell. When we determine that impairment is indicated for an asset, the amount of impairment expense recorded is the excess of the carrying value over the fair value of the asset. Allowance for losses on customer financing receivables We record the potential impairment of customer financing receivables in a valuation account, the balance of which is an accounting estimate of expected but unconfirmed losses. The allowance for losses on receivables relates to two components of receivables: (a) receivables that are evaluated individually for impairment and (b) all other receivables. We determine a receivable is impaired when, based on current information and events, it is expected that we will be unable to collect amounts due according to the original contractual terms of the receivable agreement, without regard to any subsequent restructurings. Factors considered in assessing collectability include, but are not limited to, a customer’s extended delinquency, requests for restructuring and filings for bankruptcy. We determine a specific impairment allowance based on the difference between the carrying value of the receivable and the estimated fair value of the related collateral we would expect to realize. We review the adequacy of the allowance attributable to the remaining receivables (after excluding receivables subject to a specific impairment allowance) by assessing both the collateral exposure and the applicable cumulative default rate. Collateral exposure for a particular receivable is the excess of the carrying value of the receivable over the fair value of the related collateral. A receivable with an estimated fair value in excess of the carrying value is considered to have no collateral exposure. The applicable cumulative default rate is determined using two components: customer credit ratings and weighted average remaining contract term. Internally assigned credit ratings, our credit quality indicator, are determined for each customer in the portfolio. Those ratings are updated based upon public information and information obtained directly from our customers. We have entered into agreements with certain customers that would entitle us to look beyond the specific collateral underlying the receivable for purposes of determining the collateral exposure as described above. Should the proceeds from the sale of the underlying collateral asset resulting from a default condition be insufficient to cover the carrying value of our receivable (creating a shortfall condition), these agreements would, for example, permit us to take the actions necessary to sell or retain certain other assets in which the customer has an equity interest and use the proceeds to cover the shortfall.
Warranties	Warranties In conjunction with certain product sales, we provide warranties that cover factors such as non-conformance to specifications and defects in material and design. The majority of our warranties are issued by our Commercial Airplanes segment. Generally, aircraft sales are accompanied by a 3 to 4-year standard warranty for systems, accessories, equipment, parts, and software manufactured by us or manufactured to certain standards under our authorization. These warranties are included in the programs’ estimate at completion. On occasion we have made commitments beyond the standard warranty obligation to correct fleet-wide major issues of a particular model, resulting in additional accrued warranty expense. Warranties issued by our BDS segment principally relate to sales of military aircraft and weapons systems. These sales are generally accompanied by a six month to two-year warranty period and cover systems, accessories, equipment, parts, and software manufactured by us to certain contractual specifications. Estimated costs related to standard warranties are recorded in the period in which the related product delivery occurs. The warranty liability recorded at each balance sheet date reflects the estimated number of months of warranty coverage outstanding for products delivered times the average of historical monthly warranty payments, as well as additional amounts for certain major warranty issues that exceed a normal claims level. Estimated costs of these additional warranty issues are considered changes to the initial liability estimate. We provide guarantees to certain commercial airplane customers which include compensation provisions for failure to meet specified aircraft performance targets. We account for these performance guarantees as warranties. The estimated liability for these warranties is based on known and anticipated operational characteristics and forecasted customer operation of the aircraft relative to contractually specified performance targets, and anticipated settlements when contractual remedies are not specified. Estimated payments are recorded as a reduction of revenue at delivery of the related aircraft. We have agreements that require certain suppliers to compensate us for amounts paid to customers for failure of supplied equipment to meet specified performance targets. Claims against suppliers under these agreements are included in Inventories and recorded as a reduction in Cost of products at delivery of the related aircraft. These performance warranties and claims against suppliers are included in the programs’ estimate at completion.
Supplier Penalties	Supplier Penalties We record an accrual for supplier penalties when an event occurs that makes it probable that a supplier penalty will be incurred and the amount is reasonably estimable. Until an event occurs, we fully anticipate accepting all products procured under production-related contracts.
Guarantees	Guarantees We record a liability in Accrued liabilities for the fair value of guarantees. For credit guarantees, the liability is equal to the present value of the expected loss. We determine the expected loss by multiplying the creditor’s default rate by the guarantee amount reduced by the expected recovery, if applicable. At inception of a guarantee, and adjusted each quarter, we also recognize a liability for the expected contingent loss.

Earnings Per Share (Policy)

Earnings Per Share (Policy)	12 Months Ended
	Dec. 31, 2020
Earnings Per Share [Abstract]
Earnings Per Share, Policy	Basic and diluted earnings per share are computed using the two-class method, which is an earnings allocation method that determines earnings per share for common shares and participating securities. The undistributed earnings are allocated between common shares and participating securities as if all earnings had been distributed during the period. Participating securities and common shares have equal rights to undistributed earnings. Basic earnings per share is calculated by taking net earnings, less earnings available to participating securities, divided by the basic weighted average common shares outstanding. Diluted earnings per share is calculated by taking net earnings, less earnings available to participating securities, divided by the diluted weighted average common shares outstanding.

Customer Financing (Policies)

Customer Financing (Policies)	12 Months Ended
	Dec. 31, 2020
Customer Financing [Abstract]
Impaired Financing Receivable, Policy	We determine a receivable is impaired when, based on current information and events, it is probable that we will be unable to collect amounts due according to the original contractual terms. At December 31, 2020 and 2019, we individually evaluated for impairment customer financing receivables of $391 and $400, of which $380 and $388 were determined to be impaired. We recorded no allowance for losses on these impaired receivables as the collateral values exceeded the carrying values of the receivables.
Financing Receivable, Allowance for Credit Losses, Policy for Uncollectible Amounts	We determine a receivable is past due when cash has not been received upon the due date specified in the contract. There were no past due customer financing receivables as of December 31, 2020. We evaluate the collectability of customer financing receivables at commencement and on a recurring basis. If a customer financing receivable is deemed uncollectible, the customer is categorized as non-accrual status. When a customer is in non-accrual status at commencement, sales-type lease revenue is deferred until substantially all cash has been received or the customer is removed from non-accrual status. If a customer status changes to non-accrual after commencement or is a direct finance lease and sufficient collateral is available, we recognize contractual interest income as payments are received to the extent payments exceed past due principal payments. If there is not sufficient collateral, then revenue is not recognized until payments exceed the principal balance. Receivables in non-accrual status as of December 31, 2020 and December 31, 2019 were $380 and $388. Interest income received for the twelve and three months ended December 31, 2020 was $34 and $8. The adequacy of the allowance for losses is assessed quarterly. Four primary factors influencing the level of our allowance for losses on customer financing receivables are customer credit ratings, default rates, expected loss rate and collateral values, which may be adversely affected by impacts that COVID-19 has on our customers. We assign internal credit ratings for all customers and determine the creditworthiness of each customer based upon publicly available information and information obtained directly from our customers. Our rating categories are comparable to those used by the major credit rating agencies.

Liabilities, Commitments And _2

Liabilities, Commitments And Contingencies Environmental Remediation (Policies)	12 Months Ended
	Dec. 31, 2020
Commitments and Contingencies Disclosure [Abstract]
Environmental Remediation	Environmental Remediation We are subject to federal and state requirements for protection of the environment, including those for discharge of hazardous materials and remediation of contaminated sites. We routinely assess, based on in-depth studies, expert analyses and legal reviews, our contingencies, obligations, and commitments for remediation of contaminated sites, including assessments of ranges and probabilities of recoveries from other responsible parties and/or insurance carriers. Our policy is to accrue and charge to current expense identified exposures related to environmental remediation sites when it is probable that a liability has been incurred and the amount can be reasonably estimated. The amount of the liability is based on our best estimate or the low end of a range of reasonably possible exposure for investigation, cleanup, and monitoring costs to be incurred. Estimated remediation costs are not discounted to present value as the timing of payments cannot be reasonably estimated. We may be able to recover a portion of the remediation costs from insurers or other third parties. Such recoveries are recorded when realization of the claim for recovery is deemed probable.

Summary of Business Segment D_2

Summary of Business Segment Data (Tables)	12 Months Ended
	Dec. 31, 2020
Segment Reporting, Disclosure of Entity's Reportable Segments [Abstract]
Schedule Of Segment Reporting Information, By Segment	(Dollars in millions) Years ended December 31, 2020 2019 2018 Revenues: Commercial Airplanes $16,162 $32,255 $57,499 Defense, Space & Security 26,257 26,095 26,300 Global Services 15,543 18,468 17,056 Boeing Capital 261 244 274 Unallocated items, eliminations and other (65) (503) (2) Total revenues $58,158 $76,559 $101,127 (Loss)/earnings from operations: Commercial Airplanes ($13,847) ($6,657) $7,830 Defense, Space & Security 1,539 2,615 1,692 Global Services 450 2,697 2,536 Boeing Capital 63 28 79 Segment operating (loss)/earnings (11,795) (1,317) 12,137 Unallocated items, eliminations and other (2,355) (2,073) (1,477) FAS/CAS service cost adjustment 1,383 1,415 1,327 (Loss)/earnings from operations (12,767) (1,975) 11,987 Other income, net 447 438 92 Interest and debt expense (2,156) (722) (475) (Loss)/earnings before income taxes (14,476) (2,259) 11,604 Income tax benefit/(expense) 2,535 1,623 (1,144) Net (loss)/earnings (11,941) (636) 10,460 Less: net loss attributable to noncontrolling interest (68) Net (loss)/earnings attributable to Boeing Shareholders ($11,873) ($636) $10,460

Accounting Policies (Tables)

Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2020
Accounting Policies [Abstract]
Schedule of Change in Accounting Estimate	Net cumulative catch-up adjustments to prior years' revenue and earnings, including certain reach-forward losses, across all long-term contracts were as follows: 2020 2019 2018 (Decrease)/Increase to Revenue ($359) $54 $137 Increase to Loss/decrease to Earnings from operations ($942) ($111) ($190) Decrease to Diluted EPS ($1.37) ($0.06) ($0.29)

Goodwill And Acquired Intangi_2

Goodwill And Acquired Intangibles (Tables)	12 Months Ended
	Dec. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule Of Goodwill By Reportable Segment	Changes in the carrying amount of goodwill for the years ended December 31, 2020 and 2019 were as follows: Commercial Defense, Space & Security Global Services Other Total Balance at January 1, 2019 $1,241 $3,229 $3,345 $25 $7,840 KLX acquisition adjustments (51) (51) Acquisitions 72 188 62 322 Dispositions (49) (49) Goodwill adjustments (10) 8 (2) Balance at December 31, 2019 $1,313 $3,219 $3,441 $87 $8,060 Goodwill adjustments 3 5 13 21 Balance at December 31, 2020 $1,316 $3,224 $3,454 $87 $8,081
Schedule Of Finite-Lived Intangible Assets	The gross carrying amounts and accumulated amortization of our acquired finite-lived intangible assets were as follows at December 31: 2020 2019 Gross Accumulated Gross Accumulated Distribution rights $2,812 $1,427 $2,989 $1,262 Product know-how 553 384 553 354 Customer base 1,373 672 1,364 599 Developed technology 626 502 653 485 Other 303 238 280 200 Total $5,667 $3,223 $5,839 $2,900
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense	Estimated amortization expense for the five succeeding years is as follows: 2021 2022 2023 2024 2025 Estimated amortization expense $284 $245 $234 $220 $196

Earnings Per Share (Tables)

Earnings Per Share (Tables)	12 Months Ended
	Dec. 31, 2020
Earnings Per Share [Abstract]
Schedule of Weighted Average Number of Shares	The elements used in the computation of basic and diluted earnings per share were as follows: (In millions - except per share amounts) Years ended December 31, 2020 2019 2018 Net (loss)/earnings attributable to Boeing Shareholders ($11,873) ($636) $10,460 Less: earnings available to participating securities 7 Net (loss)/earnings available to common shareholders ($11,873) ($636) $10,453 Basic Basic weighted average shares outstanding 569.0 566.0 579.9 Less: participating securities 0.4 0.6 0.7 Basic weighted average common shares outstanding 568.6 565.4 579.2 Diluted Basic weighted average shares outstanding 569.0 566.0 579.9 Dilutive potential common shares (1) 6.3 Diluted weighted average shares outstanding 569.0 566.0 586.2 Less: participating securities 0.4 0.6 0.7 Diluted weighted average common shares outstanding 568.6 565.4 585.5 Net (loss)/earnings per share: Basic ($20.88) ($1.12) $18.05 Diluted (20.88) (1.12) 17.85 (1) Diluted (loss)/earnings per share includes any dilutive impact of stock options, restricted stock units, performance-based restricted stock units and performance awards.
Schedule Of Weighted Average Number Of Shares Outstanding Excluded From The Computation Of Diluted Earnings Per Share	he following table includes the number of shares that may be dilutive potential common shares in the future. These shares were not included in the computation of diluted (loss)/earnings per share because the effect was either antidilutive or the performance condition was not met. (Shares in millions) Years ended December 31, 2020 2019 2018 Performance awards 5.7 2.8 2.5 Performance-based restricted stock units 1.3 0.6 0.3 Restricted stock units 1.0

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Components Of Earnings Before Income Taxes Between Domestic and Foreign Jurisdictions	The components of (Loss)/earnings before income taxes were: Years ended December 31, 2020 2019 2018 U.S. ($14,882) ($2,792) $11,166 Non-U.S. 406 533 438 Total ($14,476) ($2,259) $11,604
Schedule Of Income Tax Expense/(Benefit)	Income tax (benefit)/expense consisted of the following: Years ended December 31, 2020 2019 2018 Current tax (benefit)/expense U.S. federal ($3,968) ($308) $1,873 Non-U.S. 148 169 169 U.S. state 21 (161) 97 Total current (3,799) (300) 2,139 Deferred tax (benefit)/expense U.S. federal 652 (953) (996) Non-U.S. (3) (4) U.S. state 612 (367) 5 Total deferred 1,264 (1,323) (995) Total income tax (benefit)/expense ($2,535) ($1,623) $1,144
Schedule of Effective Income Tax Rate Reconciliation	The following is a reconciliation of the U.S. federal statutory tax to actual income tax expense: Years ended December 31, 2020 2019 2018 Amount Rate Amount Rate Amount Rate U.S. federal statutory tax ($3,039) 21.0 % ($474) 21.0 % $2,437 21.0 % Valuation allowance 2,603 (18.0) 25 (1.1) 22 0.2 Impact of CARES Act (1) (1,175) 8.1 Audit settlements (2) (587) 4.1 (371) 16.4 (412) (3.6) Research and development credits (284) 2.0 (382) 16.9 (207) (1.8) Other provision adjustments 234 (1.7) 66 (3.0) 91 1.0 State income tax provision, net of effects on U.S. federal tax (168) 1.2 (45) 2.0 75 0.6 Excess tax benefits (3) (82) 0.6 (180) 8.0 (181) (1.6) Foreign derived intangible income (4) (31) 0.2 (229) 10.1 (549) (4.7) Tax deductible dividends (13) 0.1 (53) 2.4 (48) (0.4) Tax on non-US activities 7 (0.1) 20 (0.9) 27 0.2 Impact of Tax Cuts and Jobs Act (5) (111) (1.0) Income tax (benefit)/expense ($2,535) 17.5 % ($1,623) 71.8 % $1,144 9.9 % (1) On March 27, 2020, the Coronavirus Aid, Relief, and Economic Security (CARES) Act was enacted, which includes a five year net operating loss (NOL) carryback provision which enabled us to benefit from certain losses and re-measure certain deferred tax assets and liabilities at the former federal tax rate of 35%. In 2020, we recorded tax benefits of $1,175 related to the NOL carryback provision. (2) In the fourth quarter of 2020, we recorded a tax benefit of $587 related to the settlement of the 2015-2017 federal tax audit. In the fourth quarter of 2019, we recorded a tax benefit of $371 related to the settlement of state tax audits spanning 15 tax years. In the third quarter of 2018, we recorded a tax benefit of $412 related to the settlement of the 2013-2014 federal tax audit. (3) In 2020, 2019 and 2018, we recorded excess tax benefits related to employee share-based payments of $82, $180 and $181, respectively. (4) In 2020, 2019 and 2018, we recorded tax benefits related to foreign derived intangible income of $31, $229 and $549, respectively which effectively apply a lower U.S. tax rate to intangible income derived from serving non-U.S. markets. (5) During the fourth quarter of 2018 and in accordance with U.S. Securities and Exchange Commission Staff Accounting Bulletin No. 118, the Company completed its accounting for the provisional amounts recognized at December 31, 2017 and recorded an incremental benefit related to refinements to these provisional amounts which was not significant.
Significant Components Of Deferred Tax Assets Net Of Deferred Tax Liabilities	Significant components of our deferred tax assets/(liabilities) at December 31 were as follows: 2020 2019 Inventory and long-term contract methods of income recognition ($4,313) ($6,048) Pension benefits 3,029 3,495 Fixed assets, intangibles and goodwill (1,645) (1,544) 737 MAX customer concessions and other considerations 1,253 1,626 Net operating loss, credit and capital loss carryovers (1) 1,182 696 Other postretirement benefit obligations 1,023 1,120 Other employee benefits 957 849 Accrued expenses and reserves 808 628 Customer and commercial financing (180) (268) Other 56 (166) Gross deferred tax assets/(liabilities) before valuation allowance $2,170 $388 Valuation allowance (3,094) (118) Net deferred tax assets/(liabilities) after valuation allowance ($924) $270
Net Deferred Tax Assets and Liabilities	Net deferred tax assets/(liabilities) at December 31 were as follows: 2020 2019 Deferred tax assets $11,600 $10,722 Deferred tax liabilities (9,430) (10,334) Valuation allowance (3,094) (118) Net deferred tax assets/(liabilities) ($924) $270
Schedule Of Unrecognized Tax Benefits Roll Forward	A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows: 2020 2019 2018 Unrecognized tax benefits – January 1 $1,476 $2,412 $1,736 Gross increases – tax positions in prior periods 44 100 87 Gross decreases – tax positions in prior periods (581) (1,418) (410) Gross increases – current period tax positions 136 344 1,208 Gross decreases – current period tax positions (1) Settlements (109) 39 (206) Statute Lapse (3) Unrecognized tax benefits – December 31 $966 $1,476 $2,412

Accounts Receivable (Tables)

Accounts Receivable (Tables)	12 Months Ended
	Dec. 31, 2020
Accounts Receivable, after Allowance for Credit Loss [Abstract]
Schedule Of Accounts Receivable	Accounts receivable at December 31 consisted of the following: 2020 2019 U.S. government contracts (1) $811 $1,121 Commercial Airplanes 17 29 Global Services (2) 1,437 1,967 Defense, Space, & Security (2) 120 220 Other 14 2 Less valuation allowance (444) (73) Total $1,955 $3,266

Allowance for Losses on Finan_2

Allowance for Losses on Financial Assets (Tables)	12 Months Ended
	Dec. 31, 2020
Credit Loss [Abstract]
Financial Assets, Allowance for Credit Loss	The change in allowances for expected credit losses for the year ended December 31, 2020 consisted of the following: Accounts receivable, net Unbilled receivables, net Other Current Assets, net Customer financing, net Other Assets, net Total Balance at January 1, 2020 ($138) ($81) ($38) ($5) ($75) ($337) Changes in estimates (314) (48) (34) (12) (66) (474) Write-offs 8 8 Recoveries 1 1 Balance at December 31, 2020 ($444) ($129) ($72) ($17) ($140) ($802)

Inventories (Tables)

Inventories (Tables)	12 Months Ended
	Dec. 31, 2020
Inventory Disclosure [Abstract]
Schedule of Inventory, Current	Inventories at December 31 consisted of the following: 2020 2019 Long-term contracts in progress $823 $1,187 Commercial aircraft programs 70,153 66,016 Commercial spare parts, used aircraft, general stock materials and other 10,739 9,419 Total $81,715 $76,622

Contracts with Customers Cont_2

Contracts with Customers Contracts with Customers (Tables)	12 Months Ended
	Dec. 31, 2020
Contracts with Customers [Abstract]
Contract with Customer, Asset and Claims	The following table summarizes our contract assets under long-term contracts that were unbillable or related to outstanding claims as of December 31: Unbilled Claims 2020 2019 2020 2019 Current $5,628 $6,931 $9 Expected to be collected after one year 2,496 2,112 18 14 Less valuation allowance (1) (129) Total $7,995 $9,043 $18 $23

Customer Financing (Tables)

Customer Financing (Tables)	12 Months Ended
	Dec. 31, 2020
Customer Financing [Abstract]
Schedule Of Customer Financing	Customer financing consisted of the following at December 31: 2020 2019 Financing receivables: Investment in sales-type/finance leases $919 $1,029 Notes 420 443 Total financing receivables 1,339 1,472 Operating lease equipment, at cost, less accumulated depreciation of $209 and $235 715 834 Gross customer financing 2,054 2,306 Less allowance for losses on receivables (17) (8) Total $2,037 $2,298
Components Of Investment In Sales Type Or Finance Leases	The components of investment in sales-type/finance leases at December 31 were as follows: 2020 2019 Minimum lease payments receivable $756 $799 Estimated residual value of leased assets 299 393 Unearned income (136) (163) Total $919 $1,029
Financing Receivable Balances Evaluated For Impairment	Financing receivable balances evaluated for impairment at December 31 were as follows: 2020 2019 Individually evaluated for impairment $391 $400 Collectively evaluated for impairment 948 1,072 Total financing receivables $1,339 $1,472
Financing Receivable Credit Quality Indicators	Our financing receivable balances at December 31 by internal credit rating category and year of origination consisted of the following: Rating categories Current 2019 2018 2017 2016 Prior Total BBB $307 $307 BB $135 $49 $15 143 342 B $52 167 219 CCC 7 33 242 $177 12 471 Total carrying value of financing receivables $142 $82 $15 $294 $177 $629 $1,339
Schedule Of Customer Financing Carrying Values Related To Major Aircraft Concentrations	The majority of customer financing carrying values are concentrated in the following aircraft models at December 31: 2020 2019 717 Aircraft ($98 and $124 accounted for as operating leases) $637 $736 747-8 Aircraft ($121 and $130 accounted for as operating leases) 480 475 737 Aircraft ($214 and $240 Accounted for as operating leases) 235 263 777 Aircraft ($216 and $236 accounted for as operating leases) 225 240 MD-80 Aircraft (Accounted for as sales-type finance leases) 167 186 757 Aircraft ($4 and $22 accounted for as operating leases) 147 182 747-400 Aircraft ($19 and $31 Accounted for as operating leases) 71 90
Customer Financing Asset Impairment Charges	Charges related to customer financing asset impairment for the years ended December 31 were as follows: 2020 2019 2018 Boeing Capital $32 $53 $1 Other Boeing (8) 217 38 Total $24 $270 $39
Scheduled Receipts On Customer Financing	As of December 31, 2020, undiscounted cash flows for notes receivable, sales-type/finance and operating leases over the next five years and thereafter are as follows: Notes receivable Sales-type/finance leases Operating leases Year 1 $149 $164 $85 Year 2 53 150 75 Year 3 34 141 72 Year 4 18 121 56 Year 5 19 83 34 Thereafter 147 97 66 Total lease receipts 420 756 388 Less imputed interest (136) Estimated unguaranteed residual values 299 Total $420 $919 $388

Property, Plant And Equipment (

Property, Plant And Equipment (Tables)	12 Months Ended
	Dec. 31, 2020
Property, Plant and Equipment [Abstract]
Schedule Of Property, Plant And Equipment	Property, plant and equipment at December 31 consisted of the following: 2020 2019 Land $512 $527 Buildings and land improvements 14,415 14,288 Machinery and equipment 16,060 15,723 Construction in progress 1,340 1,306 Gross property, plant and equipment 32,327 31,844 Less accumulated depreciation (20,507) (19,342) Total $11,820 $12,502

Investments (Tables)

Investments (Tables)	12 Months Ended
	Dec. 31, 2020
Investments [Abstract]
Schedule of Investments	Our investments, which are recorded in Short-term and other investments or Investments, consisted of the following at December 31: 2020 2019 Equity method investments (1) $936 $1,031 Time deposits 17,154 50 Available for sale debt instruments 596 405 Equity and other investments 85 65 Restricted cash & cash equivalents (2) 83 86 Total $18,854 $1,637 (1) Dividends received were $149 and $164 during 2020 and 2019. Retained earnings at December 31, 2020 include undistributed earnings from our equity method investments of $148. (2) Reflects amounts restricted in support of our workers’ compensation programs, employee benefit programs, and insurance premiums.
Schedule of Equity Method Investments	Equity Method Investments Our equity method investments consisted of the following as of December 31: Segment Ownership Percentages Investment Balance 2020 2019 United Launch Alliance BDS 50% $735 $771 Other BCA, BDS, BGS and Other 201 260 Total equity method investments $936 $1,031

Leases, Codification Topic 842

Leases, Codification Topic 842 (Tables)	12 Months Ended
	Dec. 31, 2020
Leases [Abstract]
Schedule Of Supplemental Balance Sheet Information Related To Leases	Supplemental Consolidated Statement of Financial Position information related to leases consisted of the following at December 31: 2020 2019 Operating leases: Operating lease right-of-use assets $1,252 $1,182 Current portion of lease liabilities 268 252 Non-current portion of lease liabilities 1,084 978 Total operating lease liabilities $1,352 $1,230 Weighted average remaining lease term (years) 9 9 Weighted average discount rate 3.43% 3.35%
Lessee, Operating Lease, Liability, Maturity	Maturities of operating lease liabilities for the next five years are as follows: Operating leases 2021 $307 2022 241 2023 191 2024 135 2025 105 Thereafter 802 Total lease payments 1,781 Less imputed interest (429) Total $1,352

Liabilities, Commitments And _3

Liabilities, Commitments And Contingencies (Tables)	12 Months Ended
	Dec. 31, 2020
Commitments and Contingencies Disclosure [Abstract]
Schedule of Accrued Liabilities	Accrued liabilities at December 31 consisted of the following: 2020 2019 Accrued compensation and employee benefit costs $7,121 $5,582 737 MAX customer concessions and other considerations 5,537 7,389 Department of Justice agreement liability 744 Environmental 565 570 Product warranties 1,527 1,267 Forward loss recognition 1,913 1,681 Dividends payable 1,159 Income taxes payable 43 670 Current portion of lease liabilities 268 252 Other 4,453 4,298 Total $22,171 $22,868
737 Max Liability	The following table summarizes changes in the 737 MAX customer concessions and other considerations liability during 2020. 2020 2019 Beginning balance – January 1 $7,389 Initial liability recorded in the second quarter of 2019 $6,110 Reductions for payments made (2,188) (1,237) Reductions for concessions and other in-kind considerations (162) (133) Changes in estimates 498 2,649 Ending balance – December 31 $5,537 $7,389
Schedule Of Environmental Remediation Activity	The following table summarizes environmental remediation activity during the years ended December 31, 2020 and 2019. 2020 2019 Beginning balance – January 1 $570 $555 Reductions for payments made (42) (47) Changes in estimates 37 62 Ending balance – December 31 $565 $570
Schedule Of Product Warranty Activity	The following table summarizes product warranty activity recorded during the years ended December 31, 2020 and 2019. 2020 2019 Beginning balance – January 1 $1,267 $1,127 Additions for current year deliveries 65 188 Reductions for payments made (260) (249) Changes in estimates 455 201 Ending balance – December 31 $1,527 $1,267
Contractual Obligation, Fiscal Year Maturity Schedule	The estimated earliest potential funding dates for these commitments as of December 31, 2020 are as follows: Total 2021 $2,329 2022 2,384 2023 1,677 2024 1,677 2025 1,827 Thereafter 1,618 $11,512
Severance Liability [Table Text Block]	following table summarizes changes in the severance liability during 2020: 2020 Initial liability recorded in the second quarter of 2020 $652 Reductions for payments made (658) Changes in estimates 289 Ending balance – December 31 $283

Arrangements With Off-Balance_2

Arrangements With Off-Balance Sheet Risk (Tables)	12 Months Ended
	Dec. 31, 2020
Guarantees [Abstract]
Schedule Of Guarantor Obligations	The following table provides quantitative data regarding our third party guarantees. The maximum potential payments represent a “worst-case scenario,” and do not necessarily reflect amounts that we expect to pay. Estimated proceeds from collateral and recourse represent the anticipated values of assets we could liquidate or receive from other parties to offset our payments under guarantees. The carrying amount of liabilities represents the amount included in Accrued liabilities. Maximum Estimated Carrying December 31, 2020 2019 2020 2019 2020 2019 Contingent repurchase commitments $1,452 $1,570 $1,452 $1,570 Indemnifications to ULA: Contributed Delta inventory 15 30 Inventory supply agreement 17 34 Questioned costs 317 $48 Credit guarantees 90 92 28 36 $24 16

Debt (Tables)

Debt (Tables)	12 Months Ended
	Dec. 31, 2020
Debt Disclosure [Abstract]
Schedule Of Short-Term Debt And Current Portion Of Long-Term Debt	Short-term debt and current portion of long-term debt at December 31 consisted of the following: 2020 2019 Unsecured debt $1,448 $1,099 Non-recourse debt and notes 15 21 Finance lease obligations 65 71 Commercial paper 6,109 Other notes 165 40 Total $1,693 $7,340
Schedule Of Debt	Debt at December 31 consisted of the following: 2020 2019 Unsecured debt Variable rate: Eurodollar plus 0.75% - 1.25% due 2022 $13,819 1.45% - 3.20% due through 2030 10,645 $8,600 3.25% - 3.90% due through 2059 9,555 7,073 3.95% - 5.15% due through 2059 13,917 1,731 5.71% - 6.63% due through 2060 13,005 1,129 6.88% - 8.75% due through 2043 2,252 2,250 Commercial paper 6,109 Non-recourse debt and notes 6.98% notes due through 2021 15 37 Finance lease obligations due through 2044 203 229 Other notes 172 144 Total debt $63,583 $27,302
Schedule of Debt Instruments	Total debt at December 31 is attributable to: 2020 2019 BCC $1,640 $1,960 Other Boeing 61,943 25,342 Total debt $63,583 $27,302
Scheduled Principal Payments For Debt And Capital Lease Obligations	Scheduled principal payments for debt and minimum finance lease obligations for the next five years are as follows: 2021 2022 2023 2024 2025 Debt $1,630 $14,976 $3,776 $2,001 $4,301 Minimum finance lease obligations $68 $53 $31 $14 $6

Postretirement Plans (Tables)

Postretirement Plans (Tables)	12 Months Ended
	Dec. 31, 2020
Retirement Benefits, Description [Abstract]
Components Of Net Periodic Benefit Cost	The components of net periodic benefit (income)/cost were as follows: Pension Other Postretirement Benefits Years ended December 31, 2020 2019 2018 2020 2019 2018 Service cost $3 $2 $430 $89 $77 $94 Interest cost 2,455 2,925 2,781 130 196 194 Expected return on plan assets (3,756) (3,863) (4,009) (9) (8) (8) Amortization of prior service credits (80) (79) (56) (38) (35) (126) Recognized net actuarial loss/(gain) 1,032 643 1,130 (63) (46) (10) Settlement/curtailment loss/(gain) 9 44 (4) Net periodic benefit (income)/cost ($337) ($372) $320 $105 $184 $144 Net periodic benefit cost included in (Loss)/earnings $3 $313 $313 $91 $88 $84 Net periodic benefit (income)/cost included in Other income, net (340) (374) (143) 16 107 101 Net periodic benefit (income)/cost included in (Loss)/earnings before income taxes ($337) ($61) $170 $107 $195 $185
Schedule Of Changes In The Benefit Obligation, Plan Assets And Funded Status Of Pensions And OPB	The following tables show changes in the benefit obligation, plan assets and funded status of both pensions and OPB for the years ended December 31, 2020 and 2019. Benefit obligation balances presented below reflect the PBO for our pension plans, and accumulated postretirement benefit obligations (APBO) for our OPB plans. Pension Other Postretirement Benefits 2020 2019 2020 2019 Change in benefit obligation Beginning balance $77,645 $71,424 $5,080 $5,114 Service cost 3 2 89 77 Interest cost 2,455 2,925 130 196 Amendments (29) 1 Actuarial loss/(gain) 7,759 8,695 (218) 127 Settlement/curtailment/other (68) (756) 55 Gross benefits paid (5,386) (4,658) (450) (474) Subsidies 36 36 Exchange rate adjustment 7 13 3 Ending balance $82,415 $77,645 $4,693 $5,080 Change in plan assets Beginning balance at fair value $61,711 $56,102 $149 $132 Actual return on plan assets 9,275 10,851 21 26 Company contribution 3,013 16 1 Plan participants’ contributions 6 6 Settlement payments (68) (756) Benefits paid (5,241) (4,514) (16) (16) Exchange rate adjustment 6 12 Ending balance at fair value $68,696 $61,711 $160 $149 Amounts recognized in statement of financial position at December 31 consist of: Other assets $837 $484 Accrued liabilities (148) (142) ($396) ($391) Accrued retiree health care (4,137) (4,540) Accrued pension plan liability, net (14,408) (16,276) Net amount recognized ($13,719) ($15,934) ($4,533) ($4,931)
Schedule Of Amounts Recognized In Accumulated Other Comprehensive Loss	Amounts recognized in Accumulated other comprehensive loss at December 31 were as follows: Pension Other Postretirement Benefits 2020 2019 2020 2019 Net actuarial loss/(gain) $24,324 $23,124 ($735) ($625) Prior service credits (1,387) (1,467) (110) (122) Total recognized in Accumulated other comprehensive loss $22,937 $21,657 ($845) ($747)
Schedule Of Key Information For All Plans With ABO In Excess Of Plan Assets	Key information for our plans with ABO and PBO in excess of plan assets as of December 31 was as follows: 2020 2019 Accumulated benefit obligation $74,337 $70,466 Fair value of plan assets 61,502 55,907 2020 2019 Projected benefit obligation $76,057 $72,325 Fair value of plan assets 61,502 55,907
Schedule Of Assumptions Used To Calculate The Benefit Obligation and Net Periodic Benefit Costs	The following assumptions, which are the weighted average for all plans, are used to calculate the benefit obligation at December 31 of each year and the net periodic benefit cost for the subsequent year. December 31, 2020 2019 2018 Discount rate: Pension 2.50 % 3.30 % 4.20 % Other postretirement benefits 2.00 % 3.00 % 4.00 % Expected return on plan assets 6.50 % 6.80 % 6.80 % Rate of compensation increase 4.30 % 4.30 % 5.30 % Interest crediting rates for cash balance plans 5.00 % 5.15 % 5.15 %
Schedule Of Assumed Health Care Cost Trend Rates	Assumed health care cost trend rates were as follows: December 31, 2020 2019 2018 Health care cost trend rate assumed next year 4.50 % 5.00 % 5.50 % Ultimate trend rate 4.50 % 4.50 % 4.50 % Year that trend reached ultimate rate 2021 2021 2021
Schedule of actual allocations for pension assets and target allocations by asset class [Table Text Block]	The actual and target allocations by asset class for the pension assets at December 31 were as follows: Actual Allocations Target Allocations Asset Class 2020 2019 2020 2019 Fixed income 49 % 49 % 49 % 47 % Global equity 30 29 29 29 Private equity 6 5 5 5 Real estate and real assets 7 8 9 9 Hedge funds 8 9 8 10 Total 100 % 100 % 100 % 100 %
Schedule of Allocation of Plan Assets	The following table presents our plan assets using the fair value hierarchy as of December 31, 2020 and 2019. The fair value hierarchy has three levels based on the reliability of the inputs used to determine fair value. Level 1 refers to fair values determined based on quoted prices in active markets for identical assets. Level 2 refers to fair values estimated using significant other observable inputs, and Level 3 includes fair values estimated using significant unobservable inputs. December 31, 2020 December 31, 2019 Total Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Fixed income securities: Corporate $20,841 $20,801 $40 $19,341 $19,336 $5 U.S. government and agencies 5,170 5,168 2 5,759 5,759 Mortgage backed and asset backed 786 666 120 1,181 720 461 Municipal 1,176 1,104 72 1,317 1,317 Sovereign 1,040 1,038 2 1,076 1,076 Other 19 $18 1 55 $7 48 Derivatives: Assets 6 6 Liabilities (17) (17) (143) (143) Cash equivalents and other short-term investments 1,081 1,081 769 769 Equity securities: U.S. common and preferred stock 5,013 5,013 4,866 4,866 Non-U.S. common and preferred stock 5,577 5,575 2 5,529 5,527 2 Boeing company stock 3,298 3,298 Derivatives: Assets 10 10 6 6 Liabilities (9) (9) (5) (5) Private equity Real estate and real assets: Real estate 351 351 454 454 Real assets 786 723 61 2 810 649 157 4 Derivatives: Assets 6 6 5 1 4 Liabilities (2) (2) (2) (2) Total $45,132 $14,978 $29,914 $240 $41,018 $11,504 $29,042 $472 Fixed income common/collective/pooled funds $2,345 $959 Fixed income other 604 512 Equity common/collective pooled funds 6,947 6,301 Private equity 4,013 3,184 Real estate and real assets 3,359 3,605 Hedge funds 5,745 5,688 Total investments measured at NAV as a practical expedient $23,013 $20,249 Cash $267 $207 Receivables 992 383 Payables (708) (146) Total $68,696 $61,711
Schedule of Effect of Significant Unobservable Inputs, Changes in Plan Assets [Table Text Block]	The following tables present a reconciliation of Level 3 assets held during the years ended December 31, 2020 and 2019. Transfers into and out of Level 3 are reported at the beginning-of-year values. January 1 Net Realized and Unrealized Gains/(Losses) Net Purchases, Issuances and Settlements Net Transfers Into/(Out of) Level 3 December 31 Fixed income securities: Corporate $5 $1 $18 $16 $40 U.S. government and 2 2 Mortgage backed and asset backed 461 (1) (93) (247) 120 Municipal 3 2 67 72 Sovereign (1) 2 1 2 Equity securities: Non-U.S. common and 2 2 Real assets 4 (2) 2 Total $472 $2 ($71) ($163) $240 January 1 Net Realized and Unrealized Gains Net Purchases, Issuances and Settlements Net Transfers Into Level 3 December 31 Fixed income securities: Corporate $2 $3 $5 Mortgage backed and asset backed 312 $11 137 $1 461 Equity securities: Non-U.S. common and preferred stock 1 1 2 Real assets 4 4 Total $318 $11 $141 $2 $472
Schedule Of Estimated Future Benefit Payments	The table below reflects the total pension benefits expected to be paid from the plans or from our assets, including both our share of the benefit cost and the participants’ share of the cost, which is funded by participant contributions. OPB payments reflect our portion only. Year(s) 2021 2022 2023 2024 2025 2026-2030 Pensions $4,959 $4,825 $4,720 $4,657 $4,581 $21,383 Other postretirement benefits: Gross benefits paid 462 452 435 415 394 1,606 Subsidies (32) (32) (32) (31) (30) (139) Net other postretirement benefits $430 $420 $403 $384 $364 $1,467

Share-Based Compensation And _2

Share-Based Compensation And Other Compensation Arrangements (Tables)	12 Months Ended
	Dec. 31, 2020
Share-based Payment Arrangement [Abstract]
Schedule of share-based plans expense and related income tax benefit	The share-based plans expense and related income tax benefit were as follows: Years ended December 31, 2020 2019 2018 Restricted stock units and other awards $243 $217 $213 Income tax benefit $53 $47 $46
Schedule of Stock Options Activity	Stock option activity for the year ended December 31, 2020 is as follows: Shares Weighted Average Exercise Price Per Share Weighted Average Remaining Contractual Life (Years) Aggregate Intrinsic Value Number of shares under option: Outstanding at beginning of year 2,375,583 $74.79 Exercised (515,063) 71.47 Outstanding at end of year 1,860,520 $75.71 1.65 $257 Exercisable at end of year 1,860,520 $75.71 1.65 $257
Schedule of Restricted Stock Units Award Activity	RSU activity for the year ended December 31, 2020 was as follows: Executive Long-Term Incentive Program Employee Long-Term Incentive Program Other Number of units: Outstanding at beginning of year 905,025 908,321 Granted 1,103,608 5,163,425 196,818 Dividends 7,091 7,303 Forfeited (104,374) (33,896) Distributed (487,749) (329,227) Outstanding at end of year 1,423,601 5,163,425 749,319 Unrecognized compensation cost $237 $973 $102 Weighted average remaining contractual life (years) 2.5 3.0 2.0
Schedule of Performance Based Restricted Stock Units Award Grant Fair Values	The grant date fair values were estimated using a Monte-Carlo simulation model with the assumptions presented below. The model includes no expected dividend yield as the units earn dividend equivalents. Grant Year Grant Date Performance Period Expected Volatility Risk Free Interest Rate Grant Date Fair Value 2020 2/24/2020 3 years 27.04 % 1.21 % $357.38 2019 2/25/2019 3 years 23.88 % 2.46 % 466.04 2018 2/26/2018 3 years 22.11 % 2.36 % 390.27
Schedule of Performance Based Restricted Stock Units Award Activity	PBRSU activity for the year ended December 31, 2020 was as follows: Executive Long-Term Incentive Program Number of units: Outstanding at beginning of year 826,126 Granted 290,202 Performance based adjustment (1) 293,203 Dividends 27,299 Forfeited (83,055) Distributed (732,216) Outstanding at end of year 621,559 Unrecognized compensation cost $93 Weighted average remaining contractual life (years) 1.8

Shareholders' Equity (Tables)

Shareholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2020
Stockholders' Equity Note [Abstract]
Schedule Of Common Stock Outstanding Roll Forward	The following table shows changes in each class of shares: Common Treasury Balance at January 1, 2018 1,012,261,159 421,222,326 Issued (3,409,330) Acquired 26,806,974 Balance at December 31, 2018 1,012,261,159 444,619,970 Issued (2,797,002) Acquired 7,529,437 Balance at December 31, 2019 1,012,261,159 449,352,405 Issued (19,986,868) Acquired 575,484 Balance at December 31, 2020 1,012,261,159 429,941,021
Schedule of Accumulated Other Comprehensive Income (Loss)	Changes in Accumulated other comprehensive loss (AOCI) by component for the years ended December 31, 2020, 2019 and 2018 were as follows: Currency Translation Adjustments Unrealized Gains and Losses on Certain Investments Unrealized Gains and Losses on Derivative Instruments Defined Benefit Pension Plans & Other Postretirement Benefits Total (1) Balance at January 1, 2018 ($15) ($2) $54 ($16,410) ($16,373) Other comprehensive (loss)/income before reclassifications (86) 2 (146) 747 517 Amounts reclassified from AOCI 30 743 (2) 773 Net current period Other comprehensive (loss)/income (86) 2 (116) 1,490 1,290 Balance at December 31, 2018 ($101) $— ($62) ($14,920) ($15,083) Other comprehensive income/(loss) before reclassifications (27) 1 (48) (1,397) (1,471) Amounts reclassified from AOCI 26 375 (2) 401 Net current period Other comprehensive (loss)/income (27) 1 (22) (1,022) (1,070) Balance at December 31, 2019 ($128) $1 ($84) ($15,942) ($16,153) Other comprehensive (loss)/income before reclassifications 98 14 (1,929) (1,817) Amounts reclassified from AOCI 27 810 (2) 837 Net current period Other comprehensive (loss)/income 98 41 (1,119) (980) Balance at December 31, 2020 ($30) $1 ($43) ($17,061) ($17,133) (1) Net of tax. (2) Primarily relates to amortization of actuarial losses for the years ended December 31, 2020, 2019, and 2018 totaling $917, $464, and $878 (net of tax of ($52), ($133), and ($242)), respectively. These are included in the net periodic pension cost. See Note 16.

Derivative Financial Instrume_2

Derivative Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2020
Summary of Derivative Instruments [Abstract]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]	The notional amounts and fair values of derivative instruments in the Consolidated Statements of Financial Position as of December 31 were as follows: Notional amounts (1) Other assets Accrued 2020 2019 2020 2019 2020 2019 Derivatives designated as hedging instruments: Foreign exchange contracts $2,594 $2,590 $81 $29 ($24) ($60) Commodity contracts 404 645 4 4 (43) (72) Derivatives not receiving hedge accounting treatment: Foreign exchange contracts 769 285 22 1 (16) (6) Commodity contracts 904 1,644 (17) Total derivatives $4,671 $5,164 107 34 (100) (138) Netting arrangements (31) (20) 31 20 Net recorded balance $76 $14 ($69) ($118) (1) Notional amounts represent the gross contract/notional amount of the derivatives outstanding.
Schedule Of Derivative Instruments, Gains/(Losses) In Statement Of Financial Performance	Gains/(losses) associated with our hedging transactions and forward points recognized in Other comprehensive income are presented in the following table: Years ended December 31, 2020 2019 Recognized in Other comprehensive income, net of taxes: Foreign exchange contracts $44 $15 Commodity contracts (30) (63)
Reclassification out of Accumulated Other Comprehensive Income	Gains/(losses) associated with our hedging transactions and forward points reclassified from AOCI to earnings are presented in the following table: Years ended December 31, 2020 2019 Foreign exchange contracts Revenues ($3) Costs and expenses (14) ($26) General and administrative (6) (9) Commodity contracts Costs and expenses ($10) $1 General and administrative expense (1) 1

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2020
Fair Value Disclosures [Abstract]
Fair Value, Assets And Liabilities Measured On Recurring Basis	The fair value hierarchy has three levels based on the reliability of the inputs used to determine fair value. Level 1 refers to fair values determined based on quoted prices in active markets for identical assets. Level 2 refers to fair values estimated using significant other observable inputs, and Level 3 includes fair values estimated using significant unobservable inputs. The following table presents our assets and liabilities that are measured at fair value on a recurring basis and are categorized using the fair value hierarchy. December 31, 2020 December 31, 2019 Total Level 1 Level 2 Total Level 1 Level 2 Assets Money market funds $2,230 $2,230 $2,562 $2,562 Available-for-sale debt investments: Commercial paper 149 $149 108 $108 Corporate notes 333 333 242 242 U.S. government agencies 114 114 55 55 Other equity investments 54 54 33 33 Derivatives 76 76 14 $14 Total assets $2,956 $2,284 $672 $3,014 $2,650 $364 Liabilities Derivatives ($69) ($69) ($118) ($118) Total liabilities ($69) ($69) ($118) ($118)
Fair Value, Assets Measured On Nonrecurring Basis Using Unobservable Inputs	The following table presents the nonrecurring losses recognized for the years ended December 31 due to long-lived asset impairment, and the fair value and asset classification of the related assets as of the impairment date: 2020 2019 Fair Value Total Losses Fair Value Total Losses Investments $22 ($81) $27 ($109) Customer financing assets 105 (24) $111 (20) Other assets and Acquired intangible assets 298 (221) 4 (310) Property, plant and equipment 79 (84) 41 (4) Total $504 ($410) $183 ($443)
Fair Value, Assets Measured On Nonrecurring Basis, Valuation Techniques	For Level 3 assets that were measured at fair value on a nonrecurring basis during the year ended December 31, 2020, the following table presents the fair value of those assets as of the measurement date, valuation techniques and related unobservable inputs of those assets. Fair Valuation Unobservable Input Range Customer financing assets $105 Market approach Aircraft value publications $85 - $169 (1) Median $116 Aircraft condition adjustments ($14) - $3 (2) Net ($11) (1) The range represents the sum of the highest and lowest values for all aircraft subject to fair value measurement, according to the third party aircraft valuation publications that we use in our valuation process. (2) The negative amount represents the sum, for all aircraft subject to fair value measurement, of all downward adjustments based on consideration of individual aircraft attributes and condition. The positive amount represents the sum of all such upward adjustments.
Fair Values And Related Carrying Values Of Financial Instruments	The fair values and related carrying values of financial instruments that are not required to be remeasured at fair value on the Consolidated Statements of Financial Position at December 31 were as follows: December 31, 2020 Carrying Amount Total Fair Value Level 1 Level 2 Level 3 Assets Notes receivable, net $420 $488 $488 Liabilities Debt, excluding finance lease obligations (63,380) (72,357) (72,342) ($15) December 31, 2019 Carrying Amount Total Fair Value Level 1 Level 2 Level 3 Assets Notes receivable, net $443 $444 $444 Liabilities Debt, excluding finance lease obligations and commercial paper (20,964) (23,119) (23,081) ($38)

Segment and Revenue Informati_2

Segment and Revenue Information (Tables)	12 Months Ended
	Dec. 31, 2020
Disaggregation of Revenue [Line Items]
Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area	Revenues, including foreign military sales, are reported by customer location and consisted of the following: Years ended December 31, 2020 2019 2018 Europe $7,961 $10,366 $12,976 Asia, other than China 4,128 10,662 12,141 Middle East 5,308 9,272 9,745 China 1,803 5,684 13,764 Canada 1,302 2,019 2,583 Oceania 832 2,006 2,298 Africa 114 1,113 1,486 Latin America, Caribbean and other 229 1,015 1,458 Total non-U.S. revenues 21,677 42,137 56,451 United States 36,979 42,681 44,676 Estimated potential concessions and other considerations to 737 MAX customers, net (1) (498) (8,259) Total revenues $58,158 $76,559 $101,127
Schedule Of Unallocated Items and Eliminations	Components of Unallocated items, eliminations and other are shown in the following table. Years ended December 31, 2020 2019 2018 Share-based plans ($120) ($65) ($76) Deferred compensation (93) (174) (19) Amortization of previously capitalized interest (95) (89) (92) Research and development expense, net (240) (401) (144) Customer financing impairment (250) Litigation (109) (148) Eliminations and other unallocated items (1,807) (985) (998) Unallocated items, eliminations and other ($2,355) ($2,073) ($1,477) Pension FAS/CAS service cost adjustment $1,024 $1,071 $1,005 Postretirement FAS/CAS service cost adjustment 359 344 322 FAS/CAS service cost adjustment $1,383 $1,415 $1,327
Reconciliation of Assets from Segment to Consolidated	Segment assets are summarized in the table below. December 31, 2020 2019 Commercial Airplanes $77,973 $73,995 Defense, Space & Security 14,256 15,757 Global Services 17,399 18,605 Boeing Capital 1,978 2,269 Unallocated items, eliminations and other 40,530 22,999 Total $152,136 $133,625
Schedule Of Capital Expenditures By Segment	Capital Expenditures Years ended December 31, 2020 2019 2018 Commercial Airplanes $322 $433 $604 Defense, Space & Security 172 189 201 Global Services 127 218 231 Unallocated items, eliminations and other 682 994 686 Total $1,303 $1,834 $1,722 Capital expenditures for Unallocated items, eliminations and other relate primarily to assets managed centrally on behalf of the four principal business segments.
Schedule Of Depreciation And Amortization Expense By Segment	Depreciation and Amortization Years ended December 31, 2020 2019 2018 Commercial Airplanes $559 $580 $565 Defense, Space & Security 251 256 270 Global Services 408 424 348 Boeing Capital Corporation 66 64 58 Centrally Managed Assets (1) 962 947 873 Total $2,246 $2,271 $2,114 (1) Amounts shown in the table represent depreciation and amortization expense recorded by the individual business segments. Depreciation and amortization for centrally managed assets are included in segment operating earnings based on usage and occupancy. In 2020, $689 was included in the primary business segments, of which $397, $236, and $56 was included in BCA, BDS and BGS, respectively. In 2019, $717 was included in the primary business segments, of which $407, $257, and $53 was included in BCA, BDS and BGS, respectively. In 2018, $692 was included in the primary business segments, of which $417, $213, and $62 was included in BCA, BDS and BGS, respectively.
Commercial Airplanes
Disaggregation of Revenue [Line Items]
Schedule of Disaggregation of Revenue	BCA revenues by customer location consisted of the following: Years ended December 31, 2020 2019 2018 Revenue from contracts with customers: Europe $3,872 $5,829 $9,719 Middle East 1,647 5,761 5,876 Asia, other than China 1,408 7,395 8,274 China 1,271 5,051 13,068 Other 513 3,450 5,185 Total non-U.S. revenues 8,711 27,486 42,122 United States 7,899 12,676 15,347 Estimated potential concessions and other considerations to 737 MAX customers, net (1) (498) (8,259) Total revenues from contracts with customers 16,112 31,903 57,469 Intersegment revenues, eliminated on consolidation 50 352 30 Total segment revenues $16,162 $32,255 $57,499 Revenue recognized on fixed-price contracts 100 % 100 % 100 % Revenue recognized at a point in time 100 % 100 % 100 %
Defense, Space & Security
Disaggregation of Revenue [Line Items]
Schedule of Disaggregation of Revenue	BDS revenues on contracts with customers, based on the customer's location, consisted of the following: Years ended December 31, 2020 2019 2018 Revenue from contracts with customers: U.S. customers $19,662 $19,465 $19,488 Non-U.S. customers (1) 6,595 6,630 6,812 Total segment revenue from contracts with customers $26,257 $26,095 $26,300 Revenue recognized over time 98 % 98 % 98 % Revenue recognized on fixed-price contracts 69 % 70 % 70 % Revenue from the U.S. government (1) 89 % 89 % 88 % (1) Includes revenues earned from foreign military sales through the U.S. government.
Global Services
Disaggregation of Revenue [Line Items]
Schedule of Disaggregation of Revenue	BGS revenues consisted of the following: Years ended December 31, 2020 2019 2018 Revenue from contracts with customers: Commercial $6,936 $10,167 $9,227 Government 8,368 8,107 7,658 Total revenues from contracts with customers 15,304 18,274 16,885 Intersegment revenues eliminated on consolidation 239 194 171 Total segment revenues $15,543 $18,468 $17,056 Revenue recognized at a point in time 47 % 55 % 54 % Revenue recognized on fixed-price contracts 87 % 90 % 90 % Revenue from the U.S. government (1) 41 % 34 % 36 % (1) Includes revenues earned from foreign military sales through the U.S. government.

Quarterly Financial Data (Table

Quarterly Financial Data (Tables)	12 Months Ended
	Dec. 31, 2020
Quarterly Financial Information Disclosure [Abstract]
Schedule Of Quarterly Financial Data	2020 2019 4th 3rd 2nd 1st 4th 3rd 2nd 1st Total revenues $15,304 $14,139 $11,807 $16,908 $17,911 $19,980 $15,751 $22,917 Total costs and expenses (20,992) (13,105) (12,978) (16,768) (18,708) (16,930) (17,810) (18,645) (Loss)/earnings from operations (8,049) (401) (2,964) (1,353) (2,204) 1,259 (3,380) 2,350 Net (loss)/earnings attributable to Boeing Shareholders (8,420) (449) (2,376) (628) (1,010) 1,167 (2,942) 2,149 Basic (loss)/earnings per share (14.65) (0.79) (4.20) (1.11) (1.79) 2.07 (5.21) 3.79 Diluted (loss)/earnings per share (14.65) (0.79) (4.20) (1.11) (1.79) 2.05 (5.21) 3.75

Summary Of Business Segment D_3

Summary Of Business Segment Data (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Segment Reporting Information [Line Items]
Revenues	$ 15,304	$ 14,139	$ 11,807	$ 16,908	$ 17,911	$ 19,980	$ 15,751	$ 22,917	$ 58,158	$ 76,559	$ 101,127
Earnings from operations	(8,049)	(401)	(2,964)	(1,353)	(2,204)	1,259	(3,380)	2,350	(12,767)	(1,975)	11,987
Other income, net									447	438	92
Interest and debt expense									(2,156)	(722)	(475)
(Loss)/earnings before income taxes									(14,476)	(2,259)	11,604
Income tax benefit/(expense)									2,535	1,623	(1,144)
Net (loss)/earnings									(11,941)	(636)	10,460
Net Income (Loss) Attributable to Noncontrolling Interest									(68)
Net (loss)/earnings attributable to Boeing Shareholders	$ (8,420)	$ (449)	$ (2,376)	$ (628)	$ (1,010)	$ 1,167	$ (2,942)	$ 2,149	(11,873)	(636)	10,460
Operating Segments [Member]
Segment Reporting Information [Line Items]
Earnings from operations									(11,795)	(1,317)	12,137
Operating Segments [Member] | Commercial Airplanes
Segment Reporting Information [Line Items]
Revenues									16,162	32,255	57,499
Earnings from operations									(13,847)	(6,657)	7,830
Operating Segments [Member] | Defense, Space & Security
Segment Reporting Information [Line Items]
Revenues									26,257	26,095	26,300
Earnings from operations									1,539	2,615	1,692
Operating Segments [Member] | Global Services
Segment Reporting Information [Line Items]
Revenues									15,543	18,468	17,056
Earnings from operations									450	2,697	2,536
Operating Segments [Member] | Boeing Capital Corporation
Segment Reporting Information [Line Items]
Revenues									261	244	274
Earnings from operations									63	28	79
Corporate Reconciling Items And Eliminations [Member]
Segment Reporting Information [Line Items]
Revenues									(65)	(503)	(2)
Operating Income (Loss) Excluding Unallocated Pension and Postretirement Adjustments									2,355	2,073	1,477
FAS/CAS Service Cost Adjustment									$ (1,383)	$ (1,415)	$ (1,327)

Summary Of Significant Accoun_3

Summary Of Significant Accounting Policies (Narrative) (Details) $ / shares in Units, $ in Millions	3 Months Ended					12 Months Ended
	Dec. 31, 2020USD ($)	Sep. 30, 2020USD ($)	Jun. 30, 2020USD ($)	Mar. 31, 2020USD ($)	Dec. 31, 2019USD ($)	Dec. 31, 2020USD ($)segments$ / shares	Dec. 31, 2019USD ($)$ / shares	Dec. 31, 2018USD ($)$ / shares	Jan. 01, 2020USD ($)	Dec. 31, 2017USD ($)
Summary Of Significant Accounting Policies [Line Items]
Number of Reportable Segments | segments						4
Net cash (used)/provided by operating activities						$ (18,410)	$ (2,446)	$ 15,322
Debt Instrument, Face Amount	$ 4,900		$ 25,000			4,900
Cash, Cash Equivalents, and Short-term Investments	25,600					25,600
Debt and Lease Obligation	63,583				$ 27,302	63,583	27,302
Commercial paper					6,109		6,109
Line of Credit Facility, Maximum Borrowing Capacity				$ 13,825
Increase/(Decrease) in Revenue due to change in accounting estimate						(359)	54	137
Increase/(Decrease) in Earnings from operations due to change in accounting estimate.						$ (942)	$ (111)	$ (190)
Earnings Per Share impact, change in accounting estimate | $ / shares						$ (1.37)	$ (0.06)	$ (0.29)
Reinsurance revenues						$ 129	$ 151	$ 145
Reinsurance costs						136	150	136
Research and development expense, net						2,476	3,219	3,269
Accounts payable	12,928				15,553	12,928	15,553
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 18,075				8,300	$ 18,075	8,300	(410)		$ (1,713)
Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Equity Method Investment, Ownership Percentage	20.00%					20.00%
Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Equity Method Investment, Ownership Percentage	50.00%					50.00%
Commercial Airplanes | Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Standard warranty term						3 years
Commercial Airplanes | Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Standard warranty term						4 years
Developed Technology [Member] | Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Finite-lived acquired intangible assets, useful lives (in years)						4 years
Developed Technology [Member] | Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Finite-lived acquired intangible assets, useful lives (in years)						14 years
Product Know-How [Member] | Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Finite-lived acquired intangible assets, useful lives (in years)						6 years
Product Know-How [Member] | Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Finite-lived acquired intangible assets, useful lives (in years)						30 years
Customer Base [Member] | Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Finite-lived acquired intangible assets, useful lives (in years)						3 years
Customer Base [Member] | Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Finite-lived acquired intangible assets, useful lives (in years)						17 years
Distribution Rights [Member] | Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Finite-lived acquired intangible assets, useful lives (in years)						3 years
Distribution Rights [Member] | Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Finite-lived acquired intangible assets, useful lives (in years)						27 years
Other Intangible Assets [Member] | Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Finite-lived acquired intangible assets, useful lives (in years)						1 year
Other Intangible Assets [Member] | Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Finite-lived acquired intangible assets, useful lives (in years)						32 years
Buildings And Land Improvements [Member] | Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Property, plant and equipment, estimated useful lives (in years)						10 years
Buildings And Land Improvements [Member] | Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Property, plant and equipment, estimated useful lives (in years)						40 years
Machinery And Equipment [Member] | Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Property, plant and equipment, estimated useful lives (in years)						4 years
Machinery And Equipment [Member] | Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Property, plant and equipment, estimated useful lives (in years)						20 years
Capitalized Internal Use Software [Member]
Summary Of Significant Accounting Policies [Line Items]
Property, plant and equipment, estimated useful lives (in years)						5 years
7372 Services, Prepackaged Software [Member] | Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Property, plant and equipment, estimated useful lives (in years)						10 years
Bank Overdrafts [Member]
Summary Of Significant Accounting Policies [Line Items]
Accounts payable	$ 74				101	$ 74	101
Bid And Proposal Costs [Member]
Summary Of Significant Accounting Policies [Line Items]
Research and development expense, net						224	214	234
KC-46A Tanker [Member]
Summary Of Significant Accounting Policies [Line Items]
Increase/(Decrease) in Earnings from operations due to change in accounting estimate.	275	$ 67	$ 151	827	108	1,320	(148)	(736)
Commercial Crew [Member]
Summary Of Significant Accounting Policies [Line Items]
Increase/(Decrease) in Earnings from operations due to change in accounting estimate.					410		(489)
2020 [Member] | KC-46A Tanker [Member]
Summary Of Significant Accounting Policies [Line Items]
Increase/(Decrease) in Earnings from operations due to change in accounting estimate.						(953)
Retained Earnings [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	(38,610)				$ (50,644)	(38,610)	$ (50,644)	$ (55,941)		$ (49,618)
Delayed Draw Term Loan Facility [Member]
Summary Of Significant Accounting Policies [Line Items]
Proceeds from Long-term Lines of Credit				$ 13,825
Revolving Credit Facility [Member]
Summary Of Significant Accounting Policies [Line Items]
Debt Instrument, Unused Borrowing Capacity, Amount	9,500					9,500
Line of Credit Facility, Maximum Borrowing Capacity	9,473					9,473
364-day Revolving Credit Facility [Member]
Summary Of Significant Accounting Policies [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	3,100					3,100
Supply Chain Financing [Member]
Summary Of Significant Accounting Policies [Line Items]
Accounts Payable, Trade	3,800					3,800
Senior Notes [Member] | 2021 [Member]
Summary Of Significant Accounting Policies [Line Items]
Long-term Debt, Current Maturities	$ 1,500					$ 1,500
Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2016-13 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest									$ 162
Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2016-13 [Member] | Retained Earnings [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest									$ 162

Goodwill And Acquired Intangi_3

Goodwill And Acquired Intangibles (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Goodwill and Intangible Assets [Line Items]
Carrying amount of indefinite-lived intangible assets relating to trade names	$ 197	$ 197
Carrying amount of indefinite-lived research and development	202	202
Amortization expense of acquired finite-lived intangible assets	317	331
Finite-lived Intangible Assets Acquired		563
Non-cash investing and financing transactions related to acquired finite-lived intangibles		30
Global Services | Operating Segments [Member] | Distribution Rights [Member]
Goodwill and Intangible Assets [Line Items]
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)	$ 178
Global Services | Operating Segments [Member] | Trade Names [Member]
Goodwill and Intangible Assets [Line Items]
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)		$ 293

Goodwill And Acquired Intangi_4

Goodwill And Acquired Intangibles (Schedule Of Goodwill By Reportable Segment) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Goodwill [Roll Forward]
Goodwill, Beginning Balance	$ 8,060	$ 7,840
Acquisitions		(322)
Goodwill, Written off Related to Sale of Business Unit		(49)
Goodwill adjustments	21	(2)
Goodwill, Ending Balance	8,081	8,060
Operating Segments [Member] | Commercial Airplanes
Goodwill [Roll Forward]
Goodwill, Beginning Balance	1,313	1,241
Acquisitions		(72)
Goodwill adjustments	3
Goodwill, Ending Balance	1,316	1,313
Operating Segments [Member] | Defense, Space & Security
Goodwill [Roll Forward]
Goodwill, Beginning Balance	3,219	3,229
Acquisitions
Goodwill adjustments	5	(10)
Goodwill, Ending Balance	3,224	3,219
Operating Segments [Member] | Global Services
Goodwill [Roll Forward]
Goodwill, Beginning Balance	3,441	3,345
Acquisitions		(188)
Goodwill, Written off Related to Sale of Business Unit		(49)
Goodwill adjustments	13	8
Goodwill, Ending Balance	3,454	3,441
Operating Segments [Member] | Corporate Reconciling Items And Eliminations [Member]
Goodwill [Roll Forward]
Goodwill, Beginning Balance	87	25
Acquisitions		(62)
Goodwill, Ending Balance	$ 87	87
KLX Inc.
Goodwill [Roll Forward]
Acquisitions		(51)
KLX Inc. | Operating Segments [Member] | Global Services
Goodwill [Roll Forward]
Acquisitions		$ (51)

Goodwill And Acquired Intangi_5

Goodwill And Acquired Intangibles (Schedule Of Finite-Lived Intangible Assets) (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 5,667	$ 5,839
Accumulated Amortization	3,223	2,900
Distribution Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	2,812	2,989
Accumulated Amortization	1,427	1,262
Product Know-How [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	553	553
Accumulated Amortization	384	354
Customer Base [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,373	1,364
Accumulated Amortization	672	599
Developed Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	626	653
Accumulated Amortization	502	485
Other [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	303	280
Accumulated Amortization	$ 238	$ 200

Goodwill And Acquired Intangi_6

Goodwill And Acquired Intangibles (Schedule of Finite-Lived Intangible Assets, Future Amortization Expense) (Details) $ in Millions	Dec. 31, 2020USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
Estimated amortization expense, next 12 months	$ 284
Estimated amortization expense, Year 2	245
Estimated amortization expense, Year 3	234
Estimated amortization expense, Year 4	220
Estimated amortization expense, Year 5	$ 196

Earnings Per Share (Schedule Of

Earnings Per Share (Schedule Of Weighted-Average Number Of Shares Outstanding Used To Compute Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Earnings Per Share [Abstract]
Net (loss)/earnings attributable to Boeing Shareholders	$ (8,420)	$ (449)	$ (2,376)	$ (628)	$ (1,010)	$ 1,167	$ (2,942)	$ 2,149	$ (11,873)	$ (636)	$ 10,460
Undistributed Earnings (Loss) Allocated to Participating Securities, Basic											7
Net earnings available to common shareholders									$ (11,873)	$ (636)	$ 10,453
Basic weighted average shares outstanding									569	566	579.9
Participating securities									0.4	0.6	0.7
Basic weighted average common shares outstanding									568.6	565.4	579.2
Basic weighted average shares outstanding									569	566	579.9
Dilutive potential common shares											6.3	[1]
Dilutive weighted average shares outstanding									569	566	586.2
Participating securities									0.4	0.6	0.7
Diluted weighted average common shares outstanding									568.6	565.4	585.5
Income (Loss) from Continuing Operations, Per Basic Share											$ 18.05
Income (Loss) from Continuing Operations, Per Diluted Share											$ 17.85
[1]	Diluted (loss)/earnings per share includes any dilutive impact of stock options, restricted stock units, performance-based restricted stock units and performance awards.

Earnings Per Share (Schedule _2

Earnings Per Share (Schedule Of Weighted Average Number Of Shares Outstanding Excluded From The Computation Of Diluted Earnings Per Share) (Details) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Performance Awards [Member] | Antidilutive or Performance Condition not met [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares excluded from the computation of diluted earnings	5,700	2,800	2,500
Performance Shares [Member] | Antidilutive or Performance Condition not met [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares excluded from the computation of diluted earnings	1,300	600	300
Restricted Stock Units (RSUs) [Member] | Antidilutive or Performance Condition not met [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares excluded from the computation of diluted earnings	1,000
Antidilutive due to Net Loss [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares excluded from the computation of diluted earnings	1,600	4,100

Income Taxes (Narrative) (Detai

Income Taxes (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended				12 Months Ended
	Dec. 31, 2020		Dec. 31, 2019	Sep. 30, 2018	Dec. 31, 2020	Dec. 31, 2019		Dec. 31, 2018		Dec. 31, 2017
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Effective Income Tax Rate Reconciliation, Tax Settlement, Amount	$ (587)	[1]	$ 371	$ 412		$ (371)	[1]	$ (412)	[1]
Net income tax payments/(refunds)					$ 37	837		1,326
Unrecognized tax benefits that would affect the effective tax rate, if recognized	734		1,287		734	1,287		1,405
Unrecognized tax benefits	$ 966		$ 1,476		$ 966	$ 1,476		$ 2,412		$ 1,736
[1]	In the fourth quarter of 2020, we recorded a tax benefit of $587 related to the settlement of the 2015-2017 federal tax audit. In the fourth quarter of 2019, we recorded a tax benefit of $371 related to the settlement of state tax audits spanning 15 tax years. In the third quarter of 2018, we recorded a tax benefit of $412 related to the settlement of the 2013-2014 federal tax audit.

Income Taxes (Components of Ear

Income Taxes (Components of Earnings Before Income Taxes Between Domestic and Foreign Jurisdictions) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
U.S.	$ (14,882)	$ (2,792)	$ 11,166
Non-U.S.	406	533	438
(Loss)/earnings before income taxes	$ (14,476)	$ (2,259)	$ 11,604

Income Taxes (Schedule Of Incom

Income Taxes (Schedule Of Income Tax Expense/(Benefit)) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Current Income Tax Expense (Benefit), Continuing Operations [Abstract]
U.S. federal	$ (3,968)	$ (308)	$ 1,873
Non-U.S.	148	169	169
U.S. state	21	(161)	97
Total Current Income Tax Expense (Benefit)	(3,799)	(300)	2,139
Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]
U.S. federal	652	(953)	(996)
Non-U.S.		(3)	(4)
U.S. state	612	(367)	5
Total deferred	1,264	(1,323)	(995)
Income Tax Expense (Benefit), Continuing Operations [Abstract]
Total income tax (benefit)/expense	$ (2,535)	$ (1,623)	$ 1,144

Income Taxes (Schedule Of Recon

Income Taxes (Schedule Of Reconciliation Of U.S. Federal Statutory Tax Rate To Our Effective Income Tax Rate) (Details) - USD ($) $ in Millions		3 Months Ended				12 Months Ended
		Dec. 31, 2020	[2]	Dec. 31, 2019	Sep. 30, 2018	Dec. 31, 2020	Dec. 31, 2019		Dec. 31, 2018		Dec. 31, 2017
Income Tax Examination [Line Items]
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount						$ (3,039)	$ (474)		$ 2,437
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount						2,603	25		22
Effective Income Tax Rate Reconciliation, CARES Act, Amount	[1]					(1,175)
Effective Income Tax Rate Reconciliation, Tax Settlement, Amount		$ (587)		$ 371	$ 412		(371)	[2]	(412)	[2]
Effective Income Tax Rate Reconciliation, Tax Credit, Amount						(284)	(382)		(207)
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount						234	66		91
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount						(168)	(45)		75
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-based Payment Arrangement, Amount	[3]					82	180		181
Effective Income Tax Rate Reconciliation, Tax Cuts and Jobs Act, Transition Tax on Accumulated Foreign Earnings, Amount	[4]					31	229		549
Effective Income Tax Rate Reconciliation, Deduction, Dividends, Amount						(13)	(53)		(48)
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount						7	20		27
Effective Income Tax Rate Reconciliation, Tax Cuts and Jobs Act, Amount	[5]								(111)
Total income tax (benefit)/expense						$ (2,535)	$ (1,623)		$ 1,144
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent						21.00%	21.00%		21.00%		35.00%
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent						(18.00%)	(1.10%)		0.20%
Effective Income Tax Rate Reconciliation, CARES Act, Percent	[1]					8.10%
Effective Income Tax Rate Reconciliation, Tax Settlement, Percent	[2]					4.10%	16.40%		(3.60%)
Effective Income Tax Rate Reconciliation, Tax Credit, Research, Percent						2.00%	16.90%		(1.80%)
Effective Income Tax Rate Reconciliation, Other Adjustments, Percent						(1.70%)	(3.00%)		1.00%
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent						1.20%	2.00%		0.60%
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-based Payment Arrangement, Percent	[3]					0.60%	8.00%		(1.60%)
Effective Income Tax Rate Reconciliation, Tax Cuts and Jobs Act, Transition Tax on Accumulated Foreign Earnings, Percent	[4]					0.20%	10.10%		(4.70%)
Effective Income Tax Rate Reconciliation, Deduction, Dividend, Percent						(0.10%)	(2.40%)		0.40%
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Percent						(0.10%)	(0.90%)		0.20%
Effective Income Tax Rate Reconciliation, Tax Cuts and Jobs Act, Percent	[5]								(0.010)
Effective income tax rate						17.50%	71.80%		9.90%
[1]	The following is a reconciliation of the U.S. federal statutory tax to actual income tax expense: Years ended December 31, 2020 2019 2018 Amount Rate Amount Rate Amount Rate U.S. federal statutory tax ($3,039) 21.0 % ($474) 21.0 % $2,437 21.0 % Valuation allowance 2,603 (18.0) 25 (1.1) 22 0.2 Impact of CARES Act (1) (1,175) 8.1 Audit settlements (2) (587) 4.1 (371) 16.4 (412) (3.6) Research and development credits (284) 2.0 (382) 16.9 (207) (1.8) Other provision adjustments 234 (1.7) 66 (3.0) 91 1.0 State income tax provision, net of effects on U.S. federal tax (168) 1.2 (45) 2.0 75 0.6 Excess tax benefits (3) (82) 0.6 (180) 8.0 (181) (1.6) Foreign derived intangible income (4) (31) 0.2 (229) 10.1 (549) (4.7) Tax deductible dividends (13) 0.1 (53) 2.4 (48) (0.4) Tax on non-US activities 7 (0.1) 20 (0.9) 27 0.2 Impact of Tax Cuts and Jobs Act (5) (111) (1.0) Income tax (benefit)/expense ($2,535) 17.5 % ($1,623) 71.8 % $1,144 9.9 % (1) On March 27, 2020, the Coronavirus Aid, Relief, and Economic Security (CARES) Act was enacted, which includes a five year net operating loss (NOL) carryback provision which enabled us to benefit from certain losses and re-measure certain deferred tax assets and liabilities at the former federal tax rate of 35%. In 2020, we recorded tax benefits of $1,175 related to the NOL carryback provision. (2) In the fourth quarter of 2020, we recorded a tax benefit of $587 related to the settlement of the 2015-2017 federal tax audit. In the fourth quarter of 2019, we recorded a tax benefit of $371 related to the settlement of state tax audits spanning 15 tax years. In the third quarter of 2018, we recorded a tax benefit of $412 related to the settlement of the 2013-2014 federal tax audit. (3) In 2020, 2019 and 2018, we recorded excess tax benefits related to employee share-based payments of $82, $180 and $181, respectively. (4) In 2020, 2019 and 2018, we recorded tax benefits related to foreign derived intangible income of $31, $229 and $549, respectively which effectively apply a lower U.S. tax rate to intangible income derived from serving non-U.S. markets. (5) During the fourth quarter of 2018 and in accordance with U.S. Securities and Exchange Commission Staff Accounting Bulletin No. 118, the Company completed its accounting for the provisional amounts recognized at December 31, 2017 and recorded an incremental benefit related to refinements to these provisional amounts which was not significant.
[2]	In the fourth quarter of 2020, we recorded a tax benefit of $587 related to the settlement of the 2015-2017 federal tax audit. In the fourth quarter of 2019, we recorded a tax benefit of $371 related to the settlement of state tax audits spanning 15 tax years. In the third quarter of 2018, we recorded a tax benefit of $412 related to the settlement of the 2013-2014 federal tax audit.
[3]	In 2020, 2019 and 2018, we recorded excess tax benefits related to employee share-based payments of $82, $180 and $181, respectively.
[4]	In 2020, 2019 and 2018, we recorded tax benefits related to foreign derived intangible income of $31, $229 and $549, respectively which effectively apply a lower U.S. tax rate to intangible income derived from serving non-U.S. markets.
[5]	During the fourth quarter of 2018 and in accordance with U.S. Securities and Exchange Commission Staff Accounting Bulletin No. 118, the Company completed its accounting for the provisional amounts recognized at December 31, 2017 and recorded an incremental benefit related to refinements to these provisional amounts which was not significant.

Income Taxes (Significant Compo

Income Taxes (Significant Components Of Deferred Tax Assets Net Of Deferred Tax Liabilities) (Details) - USD ($) $ in Millions		Dec. 31, 2020	Dec. 31, 2019
Valuation Allowance [Line Items]
Inventory and long-term contract methods of income recognition		$ (4,313)	$ (6,048)
Pension benefits		3,029	3,495
Fixed assets, intangibles and goodwill		(1,645)	(1,544)
737 MAX customer concessions and other considerations		1,253	1,626
Net operating loss, credit and capital loss carryovers(1)	[1]	1,182	696
Other postretirement benefit obligations		1,023	1,120
Other employee benefits		957	849
Accrued expenses and reserves		808	628
Customer and commercial financing		(180)	(268)
Other		56	166
Gross deferred tax assets/(liabilities) before valuation allowance		2,170	388
Valuation allowance		3,094	118
Net deferred tax (liabilities)/assets		924	270
Deferred tax asset for net operating loss and credit carryovers each year through December 31, 2035		793
Deferred tax asset for net operating loss and credit carryovers indefinitely		389
Deferred tax assets		11,600	10,722
Deferred Tax Liabilities, Gross		9,430	$ 10,334
Continuing Operations [Member]
Valuation Allowance [Line Items]
Valuation allowance		2,513
Other Comprehensive Income (Loss) [Member]
Valuation Allowance [Line Items]
Valuation allowance		$ 196
[1]	Of the deferred tax asset for net operating loss and credit carryovers, $793 expires on or before December 31, 2040 and $389 may be carried over indefinitely.

Income Taxes (Net Deferred Tax

Income Taxes (Net Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Components of Deferred Tax Assets and Liabilities [Abstract]
Deferred tax assets	$ 11,600	$ 10,722
Deferred tax liabilities	(9,430)	(10,334)
Valuation allowance	(3,094)	(118)
Deferred Tax Liabilities, Net	$ 924	$ 270

Income Taxes (Schedule of Unrec

Income Taxes (Schedule of Unrecognized Tax Benefits Roll Forward) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized tax benefits – January 1	$ 1,476	$ 2,412	$ 1,736
Gross increases – tax positions in prior periods	44	100	87
Gross decreases – tax positions in prior periods	(581)	(1,418)	(410)
Gross increases – current period tax positions	136	344	1,208
Settlements	109	39	206
Unrecognized tax benefits – December 31	$ 966	1,476	2,412
Statute Lapse			$ (3)
Unrecognized Tax Benefits, Decrease Resulting from Current Period Tax Positions		$ (1)

Accounts Receivable (Schedule O

Accounts Receivable (Schedule Of Accounts Receivable) (Details) - USD ($) $ in Millions		Dec. 31, 2020	Jan. 01, 2020	Dec. 31, 2019
Accounts Receivables [Line Items]
Accounts receivable, net		$ 1,955		$ 3,266
Accounts Receivable, Allowance for Credit Loss		(444)	$ (138)	(73)
U.S. Government Contracts
Accounts Receivables [Line Items]
Accounts Receivable, before Allowance for Credit Loss, Current	[1]	811		1,121
Commercial Airplanes Accounts Receivable
Accounts Receivables [Line Items]
Accounts Receivable, before Allowance for Credit Loss, Current		17		29
Global Services Accounts Receivable
Accounts Receivables [Line Items]
Accounts Receivable, before Allowance for Credit Loss, Current	[2]	1,437		1,967
Defense, Space, & Security Accounts Receivable
Accounts Receivables [Line Items]
Accounts Receivable, before Allowance for Credit Loss, Current	[2]	120		220
Other Accounts Receivable
Accounts Receivables [Line Items]
Accounts Receivable, before Allowance for Credit Loss, Current		$ 14		$ 2
[1]	Includes foreign military sales through the U.S. government
[2]	Excludes U.S. government contracts

Allowance for Losses on Finan_3

Allowance for Losses on Financial Assets (Narrative) (Details) - USD ($) $ in Millions	Dec. 31, 2020	Jan. 01, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Allowance for Losses on Financial Assets [Line Items]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 18,075		$ 8,300	$ (410)	$ (1,713)
Allowance for Credit Loss	(802)	$ (337)
Retained Earnings [Member]
Allowance for Losses on Financial Assets [Line Items]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ (38,610)		$ (50,644)	$ (55,941)	$ (49,618)
Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2016-13 [Member]
Allowance for Losses on Financial Assets [Line Items]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest		162
Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2016-13 [Member] | Retained Earnings [Member]
Allowance for Losses on Financial Assets [Line Items]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest		$ 162

Allowance for Losses on Finan_4

Allowance for Losses on Financial Assets Allowance for Losses on Financial Assets (Allowance Disclosure) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Jan. 01, 2020	Dec. 31, 2019
Allowance for Losses on Financial Assets [Line Items]
Accounts Receivable, Allowance for Credit Loss	$ (444)	$ (138)	$ (73)
Contract with Customer, Asset, Allowance for Credit Loss	(129)	(81)
Allowance for Credit Loss	(802)	(337)
Financing Receivable, Allowance for Credit Loss	(17)	(5)	$ (8)
Accounts Receivable, Credit Loss Expense (Reversal)	(314)
Contract with Customer, Asset, Credit Loss Expense (Reversal)	(48)
Credit Loss Expense, Reversal	(474)
Financing Receivable, Credit Loss, Expense (Reversal)	(12)
Accounts Receivable, Allowance for Credit Loss, Writeoff	8
Allowance for Credit Loss, Writeoff	8
Allowance for Credit Loss, Recovery	1
Other Current Assets [Member]
Allowance for Losses on Financial Assets [Line Items]
Allowance for Credit Loss	(72)	(38)
Credit Loss Expense, Reversal	(34)
Other Noncurrent Assets [Member]
Allowance for Losses on Financial Assets [Line Items]
Allowance for Credit Loss	(140)	$ (75)
Credit Loss Expense, Reversal	(66)
Other Assets, Net, Allowance for Credit Loss, Recovery	$ 1

Inventories (Narrative) (Detail

Inventories (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Inventories [Line Items]
Long-term contracts in progress	$ 823	$ 1,187
Commercial spare parts, used aircraft, general stock materials and other	10,739	9,419
777X reach-forward loss	942	111	$ 190
Airplane Program 787 [Member]
Inventories [Line Items]
Deferred production costs	14,976	18,716
Supplier advances	1,865	2,202
Unamortized tooling and other non-recurring costs	1,863	2,092
Deferred production, unamortized tooling and other nonrecurring costs to be recovered from firm orders at the balance sheet date	12,165
Deferred production, unamortized tooling and other nonrecurring costs to be recovered from future orders	4,674
Airplane Program 737 [Member]
Inventories [Line Items]
Deferred production costs	2,159	1,313
Unamortized tooling and other non-recurring costs	480	521
Deferred production, unamortized tooling and other nonrecurring costs to be recovered from firm orders at the balance sheet date	2,560
Deferred production, unamortized tooling and other nonrecurring costs to be recovered from future orders	79
Airplane Program 777x [Member]
Inventories [Line Items]
Unamortized tooling and other non-recurring costs	3,295	2,914
777X reach-forward loss	6,493
ULA [Member]
Inventories [Line Items]
Long-term contracts in progress	17	176
Capitalized Precontract Costs [Member]
Inventories [Line Items]
Inventory subject to uncertainty	733	711
Early Issue Sales Consideration [Member]
Inventories [Line Items]
Inventory subject to uncertainty	$ 2,992	$ 2,863

Inventories (Inventory Disclosu

Inventories (Inventory Disclosure Table) (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Inventory Disclosure [Abstract]
Long-term contracts in progress	$ 823	$ 1,187
Commercial aircraft programs	70,153	66,016
Commercial spare parts, used aircraft, general stock materials and other	10,739	9,419
Total	$ 81,715	$ 76,622

Contracts with Customers Cont_3

Contracts with Customers Contracts with Customers (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Schedule of Contract Assets and Liabilities [Line Items]
Unbilled receivables, net	$ 7,995	$ 9,043
Contract with Customer, Asset, Explanation of Change	primarily driven by an increase in billings at BDS and BGS, as well as an increase in allowances for expected credit losses at BGS.
Advances and progress billings	$ 50,488	51,551
Contract with Customer, Liability, Explanation of Change	primarily driven by revenue recognized in excess of advances on orders received and return of BCA customer advances, partially offset by advances on orders received at BCA, BDS, and BGS
Contract with Customer, Liability, Revenue Recognized	$ 10,360	16,778
Commercial Customers
Schedule of Contract Assets and Liabilities [Line Items]
Unbilled receivables, expected to be collected after one year	$ 178	$ 211

Contracts with Customers Cont_4

Contracts with Customers Contracts with Customers (Schedule of Unbilled Receivables and Claims) (Details) - USD ($) $ in Millions	Dec. 31, 2020	Jan. 01, 2020	Dec. 31, 2019
Contracts with Customers [Abstract]
Contract with Customer, Receivable, before Allowance for Credit Loss, Current	$ 5,628		$ 6,931
Contract with Customer, Receivable, before Allowance for Credit Loss, Noncurrent	2,496		2,112
Contract with Customer, Asset, Allowance for Credit Loss	(129)	$ (81)
Total Unbilled Receivables	7,995		9,043
Claims, current			9
Claims, expected to be collected after one year	18		14
Total Claims	$ 18		$ 23

Customer Financing (Narrative)

Customer Financing (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2020	Dec. 31, 2019	Jan. 01, 2020
Customer Financing [Line Items]
Individually evaluated for impairment	$ 391	$ 391	$ 400
Impaired financing receivables	380	380	388
Financing Receivable, Nonaccrual	380	380	388
Financing Receivable, Nonaccrual, Interest Income	8	34
Financing Receivable, Allowance for Credit Loss	(17)	(17)	(8)	$ (5)
Sales-Type and Direct Financing Leases, Lease Income		57	62
Operating Lease, Lease Income		118	139
Operating Lease, Variable Lease Income		9	8
Sales-type and Direct Financing Leases, Lease Receivable, Undiscounted Excess Amount	$ 299	$ 299	$ 393
CCC Credit Rating [Member]
Customer Financing [Line Items]
Percentage Of Credit Default Rates Applied To Customers	26.00%	26.00%
B Credit Rating [Member]
Customer Financing [Line Items]
Percentage Of Credit Default Rates Applied To Customers	7.40%	7.40%
BB Credit Rating [Member]
Customer Financing [Line Items]
Percentage Of Credit Default Rates Applied To Customers	3.00%	3.00%
BBB Credit Rating [Member]
Customer Financing [Line Items]
Percentage Of Credit Default Rates Applied To Customers	0.20%	0.20%

Customer Financing (Schedule Of

Customer Financing (Schedule Of Customer Financing) (Details) - USD ($) $ in Millions	Dec. 31, 2020	Jan. 01, 2020	Dec. 31, 2019
Customer Financing [Abstract]
Investment in sales-type/finance leases	$ 919
Net Investment in Direct Financing and Sales Type Leases	919		$ 1,029
Notes	420		443
Total financing receivables	1,339		1,472
Operating lease equipment, at cost, less accumulated depreciation of $209 and $235	715		834
Operating lease equipment, accumulated depreciation	209		235
Gross customer financing	2,054		2,306
Less allowance for losses on receivables	(17)	$ (5)	(8)
Total	$ 2,037		$ 2,298

Customer Financing (Components

Customer Financing (Components Of Investment In Sales-Type Or Finance Leases) (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Customer Financing [Abstract]
Minimum lease payments receivable	$ 756	$ 799
Estimated residual value of leased assets	299	393
Unearned income	(136)	(163)
Total	$ 919	$ 1,029

Customer Financing (Financing R

Customer Financing (Financing Receivable Balances Evaluated For Impairment) (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Customer Financing [Abstract]
Individually evaluated for impairment	$ 391	$ 400
Collectively evaluated for impairment	948	1,072
Total financing receivables	$ 1,339	$ 1,472

Customer Financing (Financing_2

Customer Financing (Financing Receivable Credit Quality Indicators) (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	$ 142
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	82
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	15
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	294
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	177
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	629
Total financing receivables	1,339	$ 1,472
BBB Credit Rating [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	307
Total financing receivables	307
BB Credit Rating [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	135
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	49
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	15
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	143
Total financing receivables	342
B Credit Rating [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	52
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	167
Total financing receivables	219
CCC Credit Rating [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	7
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	33
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	242
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	177
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	12
Total financing receivables	$ 471

Customer Financing (Schedule _2

Customer Financing (Schedule of Customer Financing Carrying Values Related to Major Aircraft Concentrations) (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Customer Financing [Line Items]
Gross customer financing	$ 2,054	$ 2,306
Operating lease equipment	715	834
B-717 Aircraft [Member]
Customer Financing [Line Items]
Gross customer financing	637	736
Operating lease equipment	98	124
B-747-8 [Member]
Customer Financing [Line Items]
Gross customer financing	480	475
Operating lease equipment	121	130
B-737 Aircraft [Member]
Customer Financing [Line Items]
Gross customer financing	235	263
Operating lease equipment	214	240
B-777 [Member]
Customer Financing [Line Items]
Gross customer financing	225	240
Operating lease equipment	216	236
MD-80 Aircraft [Member]
Customer Financing [Line Items]
Gross customer financing	167	186
B-757 Aircraft [Member]
Customer Financing [Line Items]
Gross customer financing	147	182
Operating lease equipment	4	22
B-747-400 aircraft [Member]
Customer Financing [Line Items]
Gross customer financing	71	90
Operating lease equipment	$ 19	$ 31

Customer Financing (Customer Fi

Customer Financing (Customer Financing Asset Impairment Charges) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Customer Financing [Line Items]
Impairment charges	$ (410)	$ (443)	$ (93)
Customer Financing [Member]
Customer Financing [Line Items]
Impairment charges	(24)	(270)	(39)
Customer Financing [Member] | Boeing Capital Corporation
Customer Financing [Line Items]
Impairment charges	(32)	(53)	(1)
Customer Financing [Member] | Other Boeing [Member]
Customer Financing [Line Items]
Impairment charges	$ (8)	$ (217)	$ (38)

Customer Financing (Scheduled R

Customer Financing (Scheduled Receipts On Customer Financing) (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Sales-type/finance lease payments receivable [Abstract]
Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Next Rolling Twelve Months	$ 164
Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Rolling Year Two	150
Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Rolling Year Three	141
Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Rolling Year Four	121
Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Rolling Year Five	83
Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, after Rolling Year Five	97
Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received	756
Sales-type, Direct Financing Leases, Residual Value of Leased Asset	136
Sales-type and Direct Financing Leases, Lease Receivable, Undiscounted Excess Amount	299	$ 393
Investment in sales-type/finance leases	919
Payments on notes receivable [Abstract]
Notes Receivable, Future Payments Receivable, Next Rolling Twelve Months	149
Notes Receivable, Future Payments Receivable, Due in Rolling Year Two	53
Notes Receivable, Future Payments Receivable, Due in Rolling Year Three	34
Notes Receivable, Future Payments Receivable, Due in Rolling Year Four	18
Notes Receivable, Future Payments Receivable, Due in Rolling Year Five	19
Notes Receivable, Future Payments Receivable, Due in Rolling after Year Five	147
Notes Receivable Future Payments Receivable	420
Operating lease equipment payments receivable [Abstract]
Lessor, Operating Lease, Payments to be Received, Next Rolling Twelve Months	85
Lessor, Operating Lease, Payments to be Received, Rolling Year Two	75
Lessor, Operating Lease, Payments to be Received, Rolling Year Three	72
Lessor, Operating Lease, Payments to be Received, Rolling Year Four	56
Lessor, Operating Lease, Payments to be Received, Rolling Year Five	34
Lessor, Operating Lease, Payments to be Received, after Rolling Year Five	66
Lessor, Operating Lease, Payments to be Received	$ 388

Property, Plant And Equipment_2

Property, Plant And Equipment (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Interest capitalized	$ 81	$ 83	$ 81
Property, plant and equipment included in accounts payable	182	256
Property, plant and equipment additions, non-cash	47	128
Property, Plant and Equipment [Member]
Property, Plant and Equipment [Line Items]
Depreciation	$ 1,533	$ 1,567	$ 1,556

Property, Plant And Equipment_3

Property, Plant And Equipment (Schedule Of Property, Plant And Equipment) (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Abstract]
Land	$ 512	$ 527
Buildings and land improvements	14,415	14,288
Machinery and equipment	16,060	15,723
Construction in progress	1,340	1,306
Gross property, plant and equipment	32,327	31,844
Less accumulated depreciation	(20,507)	(19,342)
Total	$ 11,820	$ 12,502

Investments (Schedule Of Invest

Investments (Schedule Of Investments) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2020		Dec. 31, 2019		Dec. 31, 2018
Investments [Abstract]
Equity method investments	[1]	$ 936		$ 1,031
Time deposits		17,154		50
Available for sale debt instruments		596		405
Equity and other investments		85		65
Restricted Cash and Cash Equivalents		83	[2]	86	[2]	$ 176
Total		18,854		1,637
Equity Method Investments and Joint Ventures [Abstract]
Dividends received from equity method investments		149		$ 164
Undistributed earnings from equity method investments		$ 148
[1]	Dividends received were $149 and $164 during 2020 and 2019. Retained earnings at December 31, 2020 include undistributed earnings from our equity method investments of $148.
[2]	Reflects amounts restricted in support of our workers’ compensation programs, employee benefit 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 December 31, 2020.

Investments (Schedule Of Owners

Investments (Schedule Of Ownership Percentages And Balances Of Equity Method Investments) (Details) - USD ($) $ in Millions		Dec. 31, 2020	Dec. 31, 2019
Schedule of Equity Method Investments [Line Items]
Equity method investments	[1]	$ 936	$ 1,031
Defense, Space & Security | United Launch Alliance [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage		50.00%	50.00%
Equity method investments		$ 735	$ 771
Commercial Airplanes, Defense, Space & Security, and Global Services [Member]
Schedule of Equity Method Investments [Line Items]
Equity method investments		$ 201	$ 260
[1]	Dividends received were $149 and $164 during 2020 and 2019. Retained earnings at December 31, 2020 include undistributed earnings from our equity method investments of $148.

Leases, Codification Topic 84_2

Leases, Codification Topic 842 (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Operating Lease, Cost	$ 360	$ 326
Variable Lease, Cost	71	55
Operating Lease, Payments	299	277
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	371	$ 371
Lessee, Operating Lease, Lease Not yet Commenced, Value	$ 226
Lessee, Operating Lease, Lease Not yet Commenced, Term of Contract	25 years

Schedule of Supplemental Balanc

Schedule of Supplemental Balance Sheet Information Related to Operating Leases (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Operating Lease, Right-of-Use Asset	$ 1,252	$ 1,182
Operating Lease, Weighted Average Remaining Lease Term	9 years	9 years
Operating Lease, Weighted Average Discount Rate, Percent	3.43%	3.35%
Other Noncurrent Liabilities [Member]
Leases [Abstract]
Operating Lease, Liability, Noncurrent	$ 1,084	$ 978
Lessee, Lease, Description [Line Items]
Operating Lease, Liability, Noncurrent	1,084	978
Other Current Liabilities [Member]
Leases [Abstract]
Operating Lease, Liability, Current	268	252
Lessee, Lease, Description [Line Items]
Operating Lease, Liability, Current	268	252
Liabilities, Total
Leases [Abstract]
Operating Lease, Liability	1,352	1,230
Lessee, Lease, Description [Line Items]
Operating Lease, Liability	$ 1,352	$ 1,230

Schedule Of Maturities Of Opera

Schedule Of Maturities Of Operating Liabilities (Details) $ in Millions	Dec. 31, 2020USD ($)
Leases [Abstract]
Lessee, Operating Lease, Liability, Payments, Due Next Rolling Twelve Months	$ 307
Lessee, Operating Lease, Liability, Payments, Due in Rolling Year Two	241
Lessee, Operating Lease, Liability, Payments, Due in Rolling Year Three	191
Lessee, Operating Lease, Liability, Payments, Due in Rolling Year Four	135
Lessee, Operating Lease, Liability, Payments, Due in Rolling Year Five	105
Lessee, Operating Lease, Liability, Payments, Due after Rolling Year Five	802
Lessee, Operating Lease, Liability, to be Paid	1,781
Lessee, Operating Lease, Liability, Undiscounted Excess Amount	$ (429)

Liabilities, Commitments And _4

Liabilities, Commitments And Contingencies (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended					12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Jun. 30, 2019
Liabilities Commitments And Contingencies [Line Items]
Increase/(Decrease) in Earnings from operations due to change in accounting estimate.						$ (942)	$ (111)	$ (190)
Amount by which estimated range of reasonably possible remediation costs exceeded recorded liabilities	$ 1,095				$ 1,077	1,095	1,077
Contingent liabilities on outstanding letters of credit agreements and surety bonds	4,238				3,769	4,238	3,769
Cash surrender value of life insurance policies	395				448	395	448
Total value of loans against underlying life insurance policies	382				431	382	431
Abnormal Production Costs			$ 133	$ 137
737 MAX Customer Concessions & Other Considerations Liability	5,537				7,389	5,537	7,389
Deferred Prosecution Agreement Liability	744					744
Deferred Prosecution Agreement Liability - Total Obligation	2,510					2,510
Contingent On Customer Negotiations [Member]
Liabilities Commitments And Contingencies [Line Items]
737 MAX Customer Concessions & Other Considerations Liability	2,500					2,500
Lower Customer Delivery Payments [Member]
Liabilities Commitments And Contingencies [Line Items]
737 MAX Customer Concessions & Other Considerations Liability	2,300					2,300
Cash Payments to Customers [Member]
Liabilities Commitments And Contingencies [Line Items]
737 MAX Customer Concessions & Other Considerations Liability	600					600
Customer Concessions [Member]
Liabilities Commitments And Contingencies [Line Items]
737 MAX Customer Concessions & Other Considerations Liability	100					100
Criminal Monetary Penalty [Member]
Liabilities Commitments And Contingencies [Line Items]
Deferred Prosecution Agreement Liability	243.6					243.6
Beneficiary Compensation [Member]
Liabilities Commitments And Contingencies [Line Items]
Deferred Prosecution Agreement Liability	500					500
Total Criminal Monetary Penalty and Beneficiary Compensation [Member]
Liabilities Commitments And Contingencies [Line Items]
Deferred Prosecution Agreement Liability	743.6					743.6
737 MAX Customer Concessions & Other Considerations Liability [Member]
Liabilities Commitments And Contingencies [Line Items]
Deferred Prosecution Agreement Liability	1,770					1,770
Within Current fiscal Year [Member]
Liabilities Commitments And Contingencies [Line Items]
737 MAX Customer Concessions & Other Considerations Liability	300					300
Within Next fiscal Year [Member]
Liabilities Commitments And Contingencies [Line Items]
Abnormal Production Costs						5,000
737 MAX Customer Concessions & Other Considerations Liability	300					300
B737NG Structure Picklefork [Member]
Liabilities Commitments And Contingencies [Line Items]
Cost of Goods and Services Sold				336			135
737 MAX Storage, Pilot Training and Software Updates [Member]
Liabilities Commitments And Contingencies [Line Items]
Additional expenses as a result of the 737 MAX grounding						416	328
B-737 Aircraft [Member]
Liabilities Commitments And Contingencies [Line Items]
Abnormal Production Costs						2,567
737 MAX Customer Concessions & Other Considerations Liability	5,537				7,389	5,537	7,389		$ 6,110
Concessions & Other In-Kind Considerations to Customers						(162)	(133)
Accrual for 737 MAX Customer Concessions and Other Considerations Liability						498	2,649
Commercial Aircraft Commitments [Member] | Total Contractual Trade In Value Maximum [Member]
Liabilities Commitments And Contingencies [Line Items]
Other Commitment	950				1,407	950	1,407
Commercial Aircraft Commitments [Member] | Probable Contractual Trade In Value [Member]
Liabilities Commitments And Contingencies [Line Items]
Other Commitment	580				678	580	678
Commercial Aircraft Commitments [Member] | Net amounts payable to customers related to probable contractual trade-in commitments [Member]
Liabilities Commitments And Contingencies [Line Items]
Other Commitment	599				711	599	711
Financing Commitment [Member]
Liabilities Commitments And Contingencies [Line Items]
Other Commitment	11,512				13,377	11,512	13,377
Financing Commitment [Member] | External Credit Rating, Non Investment Grade [Member]
Liabilities Commitments And Contingencies [Line Items]
Other Commitment	11,512					11,512
Joint Venture [Member]
Liabilities Commitments And Contingencies [Line Items]
Other Commitment	243					243
KC-46A Tanker [Member]
Liabilities Commitments And Contingencies [Line Items]
Increase/(Decrease) in Earnings from operations due to change in accounting estimate.	275	$ 67	$ 151	827	$ 108	1,320	$ (148)	$ (736)
Contract Value	15,000					15,000
KC-46A Tanker [Member] | Capitalized Precontract Costs [Member]
Liabilities Commitments And Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss	463					463
KC-46A Tanker [Member] | Potential Termination Liabilities [Member]
Liabilities Commitments And Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss	$ 1,281					$ 1,281
KC-46A Tanker Remote Vision System [Member]
Liabilities Commitments And Contingencies [Line Items]
Increase/(Decrease) in Earnings from operations due to change in accounting estimate.				$ 551

Liabilities, Commitments And _5

Liabilities, Commitments And Contingencies (Schedule Of Accrued Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Loss Contingencies [Line Items]
Accrued compensation and employee benefit costs	$ 7,121	$ 5,582
737 MAX Customer Concessions & Other Considerations Liability	5,537	7,389
Deferred Prosecution Agreement Liability	744
Environmental	565	570	$ 555
Product warranties	1,527	1,267	$ 1,127
Forward loss recognition	1,913	1,681
Dividends payable		1,159
Taxes Payable	43	670
Other	4,453	4,298
Total	22,171	22,868
Other Current Liabilities [Member]
Loss Contingencies [Line Items]
Operating Lease, Liability, Current	268	$ 252
Total Criminal Monetary Penalty and Beneficiary Compensation [Member]
Loss Contingencies [Line Items]
Deferred Prosecution Agreement Liability	$ 743.6

Liabilities, Commitments, and C

Liabilities, Commitments, and Contingencies (Schedule of 737 MAX Liability) (Details) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Jun. 30, 2019
Loss Contingencies [Line Items]
737 MAX Customer Concessions & Other Considerations Liability	$ 5,537	$ 7,389
B-737 Aircraft [Member]
Loss Contingencies [Line Items]
737 MAX Customer Concessions & Other Considerations Liability	5,537	7,389	$ 6,110
Payments Made to Customers	2,188	1,237
Concessions & Other In-Kind Considerations to Customers	162	133
Accrual for 737 MAX Customer Concessions and Other Considerations Liability	$ 498	$ 2,649

Liabilities, Commitments And _6

Liabilities, Commitments And Contingencies (Schedule Of Environmental Remediation Activity) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Accrual for Environmental Loss Contingencies [Roll Forward]
Beginning balance - January 1	$ 570	$ 555
Reductions for payments made	(42)	(47)
Changes in estimates	37	62
Ending balance - December 31	$ 565	$ 570

Liabilities, Commitments And _7

Liabilities, Commitments And Contingencies (Schedule Of Product Warranty Activity) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Movement in Standard Product Warranty Accrual [Roll Forward]
Beginning balance - January 1	$ 1,267	$ 1,127
Additions for current year deliveries	65	188
Reductions for payments made	(260)	(249)
Changes in estimates	455	201
Ending balance - December 31	$ 1,527	$ 1,267

Liabilities, Commitments And _8

Liabilities, Commitments And Contingencies (Schedule Of Estimated Potential Funding Dates For Financing Commitments) (Details) - Financing Commitment [Member] - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Other Commitments, Fiscal Year Maturity [Line Items]
2016	$ 2,329
2017	2,384
2018	1,677
2019	1,677
2020	1,827
Thereafter	1,618
Total	11,512	$ 13,377
External Credit Rating, Non Investment Grade [Member]
Other Commitments, Fiscal Year Maturity [Line Items]
Total	$ 11,512

Commitment and Contingencies (D

Commitment and Contingencies (Details) - Employee Severance [Member] - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Dec. 31, 2020
Severance Liability [Line Items]
Payments for Postemployment Benefits			$ 658
Postemployment Benefits, Period Expense	$ 328	$ 652	289
Postemployment Benefits Liability, Current		$ 652	$ 283

Arrangements With Off-Balance_3

Arrangements With Off-Balance Sheet Risk (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Offsetting capital lease obligation and IRB asset	$ 271	$ 271
ULA [Member]
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Indemnification Agreement, Payments	33
ULA [Member] | Deferred Support and Production Costs [Member]
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Litigation Settlement, Amount Awarded from Other Party	$ 307

Arrangements With Off-Balance_4

Arrangements With Off-Balance Sheet Risk (Schedule Of Arrangements With Off-Balance Sheet Risk) (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Contingent Repurchase Commitment [Member]
Guarantor Obligations [Line Items]
Maximum Potential Payments	$ 1,452	$ 1,570
Estimated Proceeds from Collateral/ Recourse	1,452	1,570
Credit Guarantees [Member]
Guarantor Obligations [Line Items]
Maximum Potential Payments	90	92
Estimated Proceeds from Collateral/ Recourse	28	36
Carrying Amount of Liabilities	24	16
ULA [Member] | Contributed Delta Program Launch Inventory [Member]
Guarantor Obligations [Line Items]
Maximum Potential Payments	15	30
ULA [Member] | Contract Pricing [Member]
Guarantor Obligations [Line Items]
Maximum Potential Payments	$ 17	34
ULA [Member] | Other Delta Contracts [Member]
Guarantor Obligations [Line Items]
Maximum Potential Payments		317
Carrying Amount of Liabilities		$ 48

Debt (Narrative) (Details)

Debt (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended			6 Months Ended	12 Months Ended
	Dec. 31, 2020	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 4,900	$ 25,000		$ 25,000	$ 4,900
Proceeds from Debt, Net of Issuance Costs	4,870	24,802
Interest Costs Incurred					2,280	$ 867	$ 624
Interest Paid, Including Capitalized Interest, Operating and Investing Activities					1,925	973	$ 616
Available amount under credit facility			$ 13,825
Total debt	63,583				63,583	$ 27,302
Line of Credit Facility, Maximum Borrowing Capacity			$ 13,825
Customer Financing [Member]
Debt Instrument [Line Items]
Customer Financing Asset Used For Collateralizing Debt	167				167
Secured Debt [Member]
Debt Instrument [Line Items]
Total debt	15				15
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Available amount under credit facility	9,473				9,473
Line of Credit Facility, Maximum Borrowing Capacity	9,473				9,473
Revolving Credit Facility [Member] | 364-day Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Available amount under credit facility	3,073				3,073
Line of Credit Facility, Maximum Borrowing Capacity	3,073				3,073
Revolving Credit Facility [Member] | Three Year Credit Facility
Debt Instrument [Line Items]
Available amount under credit facility	3,200				3,200
Line of Credit Facility, Maximum Borrowing Capacity	3,200				3,200
Revolving Credit Facility [Member] | Five Year Credit Facility [Member]
Debt Instrument [Line Items]
Available amount under credit facility	3,200				3,200
Line of Credit Facility, Maximum Borrowing Capacity	3,200				3,200
Delayed Draw Term Loan Facility [Member]
Debt Instrument [Line Items]
Debt maturity date			Feb. 6, 2022
Proceeds from Long-term Lines of Credit			$ 13,825
Debt Instrument, Maturity Date			Feb. 6, 2022
Delayed Draw Term Loan Facility [Member] | Minimum [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate			0.75%
Delayed Draw Term Loan Facility [Member] | Maximum [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate			1.25%
Five Point Zero Four Percent due May 1, 2027 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 2,000		$ 2,000
Debt maturity date		May 1, 2027
Debt Instrument, Interest Rate, Stated Percentage		5.04%		5.04%
Debt Instrument, Maturity Date		May 1, 2027
Four Point Five Zero Eight Percent due May 1, 2023 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 3,000		$ 3,000
Debt maturity date		May 1, 2023
Debt Instrument, Interest Rate, Stated Percentage		4.508%		4.508%
Debt Instrument, Maturity Date		May 1, 2023
Four Point Eight Seven Five Percent due May 1, 2025 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 3,500		$ 3,500
Debt maturity date				May 1, 2025
Debt Instrument, Interest Rate, Stated Percentage		4.875%		4.875%
Debt Instrument, Maturity Date				May 1, 2025
Five Point One Five Percent due May 1, 2030 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 4,500		$ 4,500
Debt maturity date		May 1, 2030
Debt Instrument, Interest Rate, Stated Percentage		5.15%		5.15%
Debt Instrument, Maturity Date		May 1, 2030
Five Point Seven Zero Five Percent due May 1, 2040 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 3,000		$ 3,000
Debt maturity date		May 1, 2040
Debt Instrument, Interest Rate, Stated Percentage		5.705%		5.705%
Debt Instrument, Maturity Date		May 1, 2040
Five Point Eight Zero Five Percent due May 1, 2050 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 5,500		$ 5,500
Debt maturity date		May 1, 2050
Debt Instrument, Interest Rate, Stated Percentage		5.805%		5.805%
Debt Instrument, Maturity Date		May 1, 2050
Five Point Nine Three Percent due May 1, 2060 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 3,500		$ 3,500
Debt maturity date		May 1, 2060
Debt Instrument, Interest Rate, Stated Percentage		5.93%		5.93%
Debt Instrument, Maturity Date		May 1, 2060
Two Point Seven Five Percent due on February 1, 2026 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 1,400				$ 1,400
Debt maturity date	Feb. 1, 2026
Debt Instrument, Interest Rate, Stated Percentage	2.75%				2.75%
Debt Instrument, Maturity Date	Feb. 1, 2026
Three Point Two Five Percent due February 1, 2028 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 1,100				$ 1,100
Debt maturity date	Feb. 1, 2028
Debt Instrument, Interest Rate, Stated Percentage	3.25%				3.25%
Debt Instrument, Maturity Date	Feb. 1, 2028
One Point Nine Five Percent due on February 1, 2024 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 1,000				$ 1,000
Debt maturity date	Feb. 1, 2024
Debt Instrument, Interest Rate, Stated Percentage	1.95%				1.95%
Debt Instrument, Maturity Date	Feb. 1, 2024
Three Point Six Two Five Percent due February 1, 2031 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 1,400				$ 1,400
Debt maturity date	Feb. 1, 2031
Debt Instrument, Interest Rate, Stated Percentage	3.625%				3.625%
Debt Instrument, Maturity Date	Feb. 1, 2031

Debt (Schedule Of Short-Term De

Debt (Schedule Of Short-Term Debt And Current Portion Of Long-Term Debt) (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Debt Disclosure [Abstract]
Unsecured debt	$ 1,448	$ 1,099
Non-recourse debt and notes	15	21
Finance lease obligations	65	71
Commercial paper		6,109
Other notes	165	40
Short-term debt and current portion of long-term debt	$ 1,693	$ 7,340

Debt (Schedule Of Debt) (Detail

Debt (Schedule Of Debt) (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Commercial paper		$ 6,109
Other notes	$ 172	144
Debt and Lease Obligation	63,583	$ 27,302
Commercial Paper [Member]
Debt Instrument [Line Items]
Short-term Debt, Weighted Average Interest Rate, at Point in Time		2.20%
6.98% - 7.38% notes due through 2021 [Member]
Debt Instrument [Line Items]
Non-recourse debt and notes	15	$ 37
Due Through Two Thousand Thirty-four [Member]
Debt Instrument [Line Items]
Capital lease obligations	203	229
1.45% - 3.20% due through 2030 [Member]
Debt Instrument [Line Items]
Unsecured debt securities	10,645	8,600
Eurodollar plus 0.75% - 1.25% due 2022 [Member]
Debt Instrument [Line Items]
Unsecured debt securities	13,819
3.25% - 3.90% due through 2059 [Member]
Debt Instrument [Line Items]
Unsecured debt securities	9,555	7,073
3.95% - 5.15% due through 2059 [Member]
Debt Instrument [Line Items]
Unsecured debt securities	13,917	1,731
5.71% - 6.63% due through 2060 [Member]
Debt Instrument [Line Items]
Unsecured debt securities	13,005	1,129
6.88% - 8.75% due through 2043 [Member]
Debt Instrument [Line Items]
Unsecured debt securities	$ 2,252	$ 2,250
6.98% due through 2021 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	6.98%
Minimum [Member] | 0.95% - 4.88% due through 2048 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	1.45%
Minimum [Member] | 5.80% - 6.88% due through 2043 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.95%
Minimum [Member] | 7.25% – 8.75% due through 2043 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	6.88%
Minimum [Member] | Eurodollar plus 0.75% - 1.25% due 2022 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	0.75%
Minimum [Member] | 3.25% - 3.90% due through 2059 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.25%
Minimum [Member] | 5.71% - 6.63% due through 2060 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	5.71%
Maximum [Member] | 0.95% - 4.88% due through 2048 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.20%
Maximum [Member] | 5.80% - 6.88% due through 2043 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	5.15%
Maximum [Member] | 7.25% – 8.75% due through 2043 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	8.75%
Maximum [Member] | Eurodollar plus 0.75% - 1.25% due 2022 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	1.25%
Maximum [Member] | 3.25% - 3.90% due through 2059 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.90%
Maximum [Member] | 5.71% - 6.63% due through 2060 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	6.63%

Debt (Scheduled Principal Payme

Debt (Scheduled Principal Payments For Debt And Capital Lease Obligations) (Details) $ in Millions	Dec. 31, 2020USD ($)
Debt Disclosure [Abstract]
Long-Term Debt, Maturity, Year One	$ 1,630
Long-Term Debt, Maturity, Year Two	14,976
Long-Term Debt, Maturity, Year Three	3,776
Long-Term Debt, Maturity, Year Four	2,001
Long-Term Debt, Maturity, Year Five	4,301
Finance Lease, Liability, to be Paid, Year One	68
Finance Lease, Liability, to be Paid, Year Two	53
Finance Lease, Liability, to be Paid, Year Three	31
Finance Lease, Liability, to be Paid, Year Four	14
Finance Lease, Liability, to be Paid, Year Five	$ 6

Debt Debt (Schedule of Long-ter

Debt Debt (Schedule of Long-term debt instruments) (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Debt and Lease Obligation	$ 63,583	$ 27,302
Boeing Capital Corporation
Debt Instrument [Line Items]
Debt and Lease Obligation	1,640	1,960
Other Boeing Debt [Member]
Debt Instrument [Line Items]
Debt and Lease Obligation	$ 61,943	$ 25,342

Postretirement Plans (Narrative

Postretirement Plans (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Defined Benefit Plan Disclosure [Line Items]
Amount by which fair value of plan assets exceeds market-related value of plan assets (MRVA)	$ 6,805
Derivative net notional amount for fixed income as percentage of total plan assets	8.30%	4.30%
Derivative net notional amount for global equity, currency overlay and commodities as a percentage of total plan assets	0.40%	3.60%
Expense for defined contribution plans	$ 1,351	$ 1,533	$ 1,480
Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation (ABO) for all pension plans	80,694	75,787
Company contribution	3,013	16
Defined Benefit Plan, Plan Assets, Amount	$ 68,696	$ 61,711	56,102
Defined benefit plan, actual plan asset allocations	100.00%	100.00%
Pension Plans [Member] | Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, actual plan asset allocations	49.00%	49.00%
Pension Plans [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, actual plan asset allocations	30.00%	29.00%
Pension Plans [Member] | Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	$ 14,978	$ 11,504
Pension Plans [Member] | Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	240	472	318
Pension Plans [Member] | Level 3 [Member] | Debt Securities [Member] | Corporate Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets Level 3 Reconciliation, Increase (Decrease) for Actual Return (Loss) on Plan Assets Still Held	2
Pension Plans [Member] | Level 3 [Member] | Debt Securities [Member] | US Treasury and Government [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	2
Pension Plans [Member] | Level 3 [Member] | Debt Securities [Member] | Mortgage backed and asset backed securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets Level 3 Reconciliation, Increase (Decrease) for Actual Return (Loss) on Plan Assets Still Held	1	10
Pension Plans [Member] | Level 3 [Member] | Debt Securities [Member] | Municipal [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets Level 3 Reconciliation, Increase (Decrease) for Actual Return (Loss) on Plan Assets Still Held	3
Pension Plans [Member] | Level 3 [Member] | Debt Securities [Member] | Sovereign Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets Level 3 Reconciliation, Increase (Decrease) for Actual Return (Loss) on Plan Assets Still Held	(1)
Pension Plans [Member] | Level 3 [Member] | Equity Securities [Member] | Non United States Common And Preferred Stock [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets Level 3 Reconciliation, Increase (Decrease) for Actual Return (Loss) on Plan Assets Still Held		(1)
Other Postretirement Benefits Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Company contribution		1
Defined Benefit Plan, Plan Assets, Amount	$ 160	$ 149	$ 132
Other Postretirement Benefits Plans [Member] | Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, actual plan asset allocations	40.00%
Other Postretirement Benefits Plans [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, actual plan asset allocations	60.00%
Non-Cash Contribution [Member]
Defined Benefit Plan Disclosure [Line Items]
Company contribution	$ 3,000

Postretirement Plans (Component

Postretirement Plans (Components Of Net Periodic Benefit Cost) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 3	$ 2	$ 430
Interest cost	2,455	2,925	2,781
Expected return on plan assets	(3,756)	(3,863)	(4,009)
Amortization of prior service credits	(80)	(79)	(56)
Recognized net actuarial loss/(gain)	1,032	643	1,130
Settlement/curtailment loss/(gain)	9		44
Net periodic benefit (income)/cost	(337)	(372)	320
Other Postretirement Benefits Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	89	77	94
Interest cost	130	196	194
Expected return on plan assets	(9)	(8)	(8)
Amortization of prior service credits	(38)	(35)	(126)
Recognized net actuarial loss/(gain)	(63)	(46)	(10)
Settlement/curtailment loss/(gain)	(4)
Net periodic benefit (income)/cost	105	184	144
Operating Income (Loss) [Member] | Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Net periodic benefit (income)/cost included in (Loss)/earnings before income taxes	(3)	(313)	(313)
Operating Income (Loss) [Member] | Other Postretirement Benefits Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Net periodic benefit (income)/cost included in (Loss)/earnings before income taxes	(91)	(88)	(84)
Other Income [Member] | Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Net periodic benefit (income)/cost included in (Loss)/earnings before income taxes	(340)	(374)	(143)
Other Income [Member] | Other Postretirement Benefits Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Net periodic benefit (income)/cost included in (Loss)/earnings before income taxes	(16)	(107)	(101)
Operating Income (Loss) Before Taxes [Member] | Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Net periodic benefit (income)/cost included in (Loss)/earnings before income taxes	(337)	(61)	(170)
Operating Income (Loss) Before Taxes [Member] | Other Postretirement Benefits Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Net periodic benefit (income)/cost included in (Loss)/earnings before income taxes	$ (107)	$ (195)	$ (185)

Postretirement Plans (Schedule

Postretirement Plans (Schedule Of Changes In The Benefit Obligation, Plan Assets And Funded Status Of Both Pensions And OPB) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Accrued pension plan liability, net	$ (14,408)	$ (16,276)
Pension Plans [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Beginning balance	77,645	71,424
Service cost	3	2	$ 430
Interest cost	2,455	2,925	2,781
Actuarial loss/(gain)	7,759	8,695
Settlement/curtailment/other	68	756
Gross benefits paid	(5,386)	(4,658)
Exchange rate adjustment	7	13
Ending balance	82,415	77,645	71,424
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Beginning balance at fair value	61,711	56,102
Actual return on plan assets	9,275	10,851
Company contribution	3,013	16
Settlement payments	(68)	(756)
Benefits paid	(5,241)	(4,514)
Exchange rate adjustment	6	12
Ending balance at fair value	68,696	61,711	56,102
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Other assets	837	484
Accrued liabilities	(148)	(142)
Accrued pension plan liability, net	(14,408)	(16,276)
Net amount recognized	(13,719)	(15,934)
Other Postretirement Benefits Plans [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Beginning balance	5,080	5,114
Service cost	89	77	94
Interest cost	130	196	194
Amendments	(29)	1
Actuarial loss/(gain)	(218)	127
Settlement/curtailment/other	55
Gross benefits paid	(450)	(474)
Subsidies	36	36
Exchange rate adjustment		3
Ending balance	4,693	5,080	5,114
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Beginning balance at fair value	149	132
Actual return on plan assets	21	26
Company contribution		1
Plan participants' contributions	6	6
Benefits paid	(16)	(16)
Ending balance at fair value	160	149	$ 132
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Accrued liabilities	(396)	(391)
Accrued retiree health care	(4,137)	(4,540)
Net amount recognized	$ (4,533)	$ (4,931)

Postretirement Plans (Schedul_2

Postretirement Plans (Schedule Of Amounts Recognized In Accumulated Other Comprehensive Loss) (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss/(gain)	$ 24,324	$ 23,124
Prior service credits	(1,387)	(1,467)
Total recognized in Accumulated other comprehensive loss	22,937	21,657
Other Postretirement Benefits Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss/(gain)	(735)	(625)
Prior service credits	(110)	(122)
Total recognized in Accumulated other comprehensive loss	$ (845)	$ (747)

Postretirement Plans (Schedul_3

Postretirement Plans (Schedule Of Key Information For All Plans With ABO In Excess Of Plan Assets) (Details) - Pension Plans [Member] - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets, Accumulated Benefit Obligation	$ 74,337	$ 70,466
Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets, Plan Assets	61,502	55,907
Projected benefit obligation	$ 76,057	$ 72,325

Postretirement Plans (Schedul_4

Postretirement Plans (Schedule Of Assumptions Used To Calculate The Benefit Obligation) (Details)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Defined Benefit Plan Disclosure [Line Items]
Expected return on plan assets	6.50%	6.80%	6.80%
Rate of compensation increase	4.30%	4.30%	5.30%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Interest Crediting Rates For Cash Balance Plans	5.00%	5.15%	5.15%
Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	2.50%	3.30%	4.20%
Other Postretirement Benefits Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	2.00%	3.00%	4.00%

Postretirement Plans (Schedul_5

Postretirement Plans (Schedule Of Assumed Health Care Cost Trend Rates) (Details)	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Retirement Benefits, Description [Abstract]
Health care cost trend rate assumed next year	4.50%	5.00%	5.50%
Ultimate trend rate	4.50%	4.50%	4.50%

Postretirement Plans (Schedul_6

Postretirement Plans (Schedule Of Actual Allocations For The Pension Assets And Target Allocations By Asset Class) (Details) - Pension Plans [Member]	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, actual plan asset allocations	100.00%	100.00%
Defined benefit plan, target plan asset allocations	100.00%	100.00%
Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, actual plan asset allocations	49.00%	49.00%
Defined benefit plan, target plan asset allocations	49.00%	47.00%
Equity securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, actual plan asset allocations	30.00%	29.00%
Defined benefit plan, target plan asset allocations	29.00%	29.00%
Private Equity Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, actual plan asset allocations	6.00%	5.00%
Defined benefit plan, target plan asset allocations	5.00%	5.00%
Real estate and real assets [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, actual plan asset allocations	7.00%	8.00%
Defined benefit plan, target plan asset allocations	9.00%	9.00%
Hedge Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, actual plan asset allocations	8.00%	9.00%
Defined benefit plan, target plan asset allocations	8.00%	10.00%

Postretirement Plans (Schedul_7

Postretirement Plans (Schedule Of Allocation of Plan Assets) (Details) - Pension Plans [Member] - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Fair Value Measurement [Domain]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	$ 45,132	$ 41,018
Defined Benefit Plan, Plan Assets, Amount	68,696	61,711	$ 56,102
Defined Benefit Plan, Plan Assets Measured at Net Asset Value	23,013	20,249
Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	14,978	11,504
Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	29,914	29,042
Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	240	472	318
Corporate Debt Securities [Member] | Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		5
Debt Securities [Member] | Corporate Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	20,841	19,341
Debt Securities [Member] | Corporate Debt Securities [Member] | Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	20,801	19,336
Debt Securities [Member] | Corporate Debt Securities [Member] | Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	40	5	2
Debt Securities [Member] | US Treasury and Government [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	5,170	5,759
Debt Securities [Member] | US Treasury and Government [Member] | Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	5,168	5,759
Debt Securities [Member] | US Treasury and Government [Member] | Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	2
Debt Securities [Member] | Mortgage backed and asset backed securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	786	1,181
Debt Securities [Member] | Mortgage backed and asset backed securities [Member] | Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	666	720
Debt Securities [Member] | Mortgage backed and asset backed securities [Member] | Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	120	461	312
Debt Securities [Member] | Municipal [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	1,176	1,317
Debt Securities [Member] | Municipal [Member] | Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	1,104	1,317
Debt Securities [Member] | Municipal [Member] | Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	72
Debt Securities [Member] | Sovereign Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	1,040	1,076
Debt Securities [Member] | Sovereign Debt Securities [Member] | Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	1,038	1,076
Debt Securities [Member] | Sovereign Debt Securities [Member] | Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	2
Debt Securities [Member] | Other Debt Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	19	55
Defined Benefit Plan, Plan Assets Measured at Net Asset Value	604	512
Debt Securities [Member] | Other Debt Obligations [Member] | Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	18	7
Debt Securities [Member] | Other Debt Obligations [Member] | Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	1	48
Debt Securities [Member] | Derivative Assets [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	6
Debt Securities [Member] | Derivative Assets [Member] | Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	6
Debt Securities [Member] | Derivative Liabilities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	(17)	(143)
Debt Securities [Member] | Derivative Liabilities [Member] | Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	(17)	(143)
Debt Securities [Member] | Common Or Collective Or Pooled Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets Measured at Net Asset Value	2,345	959
Cash and Cash Equivalents
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	1,081	769
Cash and Cash Equivalents | Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	1,081	769
Equity Securities [Member] | Derivative Assets [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	10	6
Equity Securities [Member] | Derivative Assets [Member] | Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	10	6
Equity Securities [Member] | Derivative Liabilities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	(9)	(5)
Equity Securities [Member] | Derivative Liabilities [Member] | Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	(9)	(5)
Equity Securities [Member] | Common Or Collective Or Pooled Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets Measured at Net Asset Value	6,947	6,301
Equity Securities [Member] | United States Common And Preferred Stock [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	5,013	4,866
Equity Securities [Member] | United States Common And Preferred Stock [Member] | Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	5,013	4,866
Equity Securities [Member] | Non United States Common And Preferred Stock [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	5,577	5,529
Equity Securities [Member] | Non United States Common And Preferred Stock [Member] | Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	5,575	5,527
Equity Securities [Member] | Non United States Common And Preferred Stock [Member] | Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	2	2
Equity Securities [Member] | Boeing Common Stock
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	3,298
Equity Securities [Member] | Boeing Common Stock | Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	3,298	0
Private Equity Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets Measured at Net Asset Value	4,013	3,184
Real estate and real assets [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets Measured at Net Asset Value	3,359	3,605
Real estate and real assets [Member] | Derivative Assets [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	6	5
Real estate and real assets [Member] | Derivative Assets [Member] | Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		1
Real estate and real assets [Member] | Derivative Assets [Member] | Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	6	4
Real estate and real assets [Member] | Derivative Liabilities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	(2)	(2)
Real estate and real assets [Member] | Derivative Liabilities [Member] | Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	(2)	(2)
Real estate and real assets [Member] | Real Estate [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	351	454
Real estate and real assets [Member] | Real Estate [Member] | Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	351	454
Real estate and real assets [Member] | Real assets [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	786	810
Real estate and real assets [Member] | Real assets [Member] | Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	723	649
Real estate and real assets [Member] | Real assets [Member] | Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	61	157
Real estate and real assets [Member] | Real assets [Member] | Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	2	4	$ 4
Hedge Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets Measured at Net Asset Value	5,745	5,688
Cash On Hand [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	267	207
Receivables [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	992	383
Payables [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	(708)	$ (146)
Debt Securities [Member] | US Treasury and Government [Member] | Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	$ 2

Postretirement Plans (Reconcili

Postretirement Plans (Reconciliation Of Level 3 Assets Held) (Details) - Pension Plans [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward]
Beginning balance at fair value	$ 61,711	$ 56,102
Net Realized and Unrealized Gains/(Losses)	9,275	10,851
Net Purchases, Issuances and Settlements	(68)	(756)
Ending balance at fair value	68,696	61,711
Level 3 [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward]
Beginning balance at fair value	472	318
Net Realized and Unrealized Gains/(Losses)	2	11
Net Purchases, Issuances and Settlements	(71)	141
Net Transfers Into/(Out of) Level 3	(163)	2
Ending balance at fair value	240	472
Debt Securities [Member] | Corporate Debt Securities [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward]
Beginning balance at fair value	19,341
Ending balance at fair value	20,841	19,341
Debt Securities [Member] | Corporate Debt Securities [Member] | Level 3 [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward]
Beginning balance at fair value	5	2
Net Realized and Unrealized Gains/(Losses)	1
Net Purchases, Issuances and Settlements	18	3
Net Transfers Into/(Out of) Level 3	16
Ending balance at fair value	40	5
Debt Securities [Member] | US Treasury and Government [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward]
Beginning balance at fair value	5,759
Ending balance at fair value	5,170	5,759
Debt Securities [Member] | US Treasury and Government [Member] | Level 3 [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward]
Net Transfers Into/(Out of) Level 3	2
Ending balance at fair value	2
Debt Securities [Member] | Mortgage backed and asset backed securities [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward]
Beginning balance at fair value	1,181
Ending balance at fair value	786	1,181
Debt Securities [Member] | Mortgage backed and asset backed securities [Member] | Level 3 [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward]
Beginning balance at fair value	461	312
Net Realized and Unrealized Gains/(Losses)	(1)	11
Net Purchases, Issuances and Settlements	(93)	137
Net Transfers Into/(Out of) Level 3	(247)	1
Ending balance at fair value	120	461
Debt Securities [Member] | Municipal [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward]
Beginning balance at fair value	1,317
Ending balance at fair value	1,176	1,317
Debt Securities [Member] | Municipal [Member] | Level 3 [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward]
Net Realized and Unrealized Gains/(Losses)	3
Net Purchases, Issuances and Settlements	2
Net Transfers Into/(Out of) Level 3	67
Ending balance at fair value	72
Debt Securities [Member] | Sovereign Debt Securities [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward]
Beginning balance at fair value	1,076
Ending balance at fair value	1,040	1,076
Debt Securities [Member] | Sovereign Debt Securities [Member] | Level 3 [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward]
Net Realized and Unrealized Gains/(Losses)	(1)
Net Purchases, Issuances and Settlements	2
Net Transfers Into/(Out of) Level 3	1
Ending balance at fair value	2
Debt Securities [Member] | Other Debt Obligations [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward]
Beginning balance at fair value	55
Ending balance at fair value	19	55
Real estate and real assets [Member] | Real assets [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward]
Beginning balance at fair value	810
Ending balance at fair value	786	810
Real estate and real assets [Member] | Real assets [Member] | Level 3 [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward]
Beginning balance at fair value	4	4
Net Purchases, Issuances and Settlements
Net Transfers Into/(Out of) Level 3	(2)
Ending balance at fair value	$ 2	$ 4

Postretirement Plans (Schedul_8

Postretirement Plans (Schedule Of Estimated Future Benefit Payments) (Details) $ in Millions	Dec. 31, 2020USD ($)
Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected future benefit payments, 2021	$ 4,959
Expected future benefit payments, 2022	4,825
Expected future benefit payments, 2023	4,720
Expected future benefit payments, 2024	4,657
Expected future benefit payments, 2025	4,581
Expected future benefit payments, 2026-2030	21,383
Other Postretirement Benefits Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected future benefit payments, 2021	430
Expected future benefit payments, 2022	420
Expected future benefit payments, 2023	403
Expected future benefit payments, 2024	384
Expected future benefit payments, 2025	364
Expected future benefit payments, 2026-2030	1,467
Gross benefits paid, 2021	462
Gross benefits paid, 2022	452
Gross benefits paid, 2023	435
Gross benefits paid, 2024	415
Gross benefits paid, 2025	394
Gross benefits paid, 2026-2030	1,606
Subsidies, 2021	(32)
Subsidies, 2022	(32)
Subsidies, 2023	(32)
Subsidies, 2024	(31)
Subsidies, 2025	(30)
Subsidies, 2026-2030	$ (139)

Share-Based Compensation And _3

Share-Based Compensation And Other Compensation Arrangements (Narrative) (Details) - USD ($)	Dec. 14, 2020	Feb. 28, 2020	Feb. 24, 2020	Feb. 25, 2019	Feb. 26, 2018	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate number of shares of stock available for issuance						87,000,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period						1,860,520	2,375,583
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Total Intrinsic Value						$ 90,000,000	$ 279,000,000	$ 320,000,000
Stock options exercised						36,000,000	58,000,000	81,000,000
Share-based Payment Arrangement, Exercise of Option, Tax Benefit						32,000,000	61,000,000	70,000,000
Deferred compensation						93,000,000	174,000,000	19,000,000
Deferred compensation liability which is being marked to market						1,718,000,000	1,779,000,000
Incentive Program Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized compensation cost						$ 237,000,000
Restricted stock units (RSUs) granted						1,103,608
Employee Incentive Program Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized compensation cost						$ 973,000,000
Restricted stock units (RSUs) granted						5,163,425
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock units (RSUs) granted			325,108	233,582	260,730
Restricted stock units (RSUs) granted (fair value per share)	$ 233		$ 319.04	$ 428.22	$ 361.13
Restricted Stock Units (RSUs) [Member] | Incentive Program Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock units (RSUs) granted	721,734
Restricted Stock Units (RSUs) [Member] | Employee Incentive Program Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock units (RSUs) granted	5,163,425
Performance Awards [Member] | 2020 Performance Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)		3 years
Initial Value Of Performance Awards (per unit)		$ 100
Performance Awards [Member] | 2019 performance awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)				3 years
Initial Value Of Performance Awards (per unit)				$ 100
Performance Awards [Member] | 2018PerformanceAwardMember [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)					3 years
Initial Value Of Performance Awards (per unit)					$ 100
Performance Awards [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance Award Payout Amount, Aggregate						$ 0
Performance Awards [Member] | Minimum [Member] | 2020 Performance Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Amount payable at end of three-year performance period3		0
Performance Awards [Member] | Minimum [Member] | 2019 performance awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Amount payable at end of three-year performance period3				0
Performance Awards [Member] | Minimum [Member] | 2018PerformanceAwardMember [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Amount payable at end of three-year performance period3					0
Performance Awards [Member] | Maximum [Member] | 2020 Performance Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Amount payable at end of three-year performance period3		$ 150
Performance Award Payout Amount, Aggregate						$ 274,000,000
Performance Awards [Member] | Maximum [Member] | 2019 performance awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Amount payable at end of three-year performance period3				$ 200
Performance Award Payout Amount, Aggregate							$ 341,000,000
Performance Awards [Member] | Maximum [Member] | 2018PerformanceAwardMember [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Amount payable at end of three-year performance period3					$ 200
Performance Award Payout Amount, Aggregate								$ 331,000,000
Performance Based Restricted Stock Units (PBRSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)			3 years	3 years	3 years
Restricted stock units (RSUs) granted (fair value per share)			$ 357.38	$ 466.04	$ 390.27
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate			27.04%	23.88%	22.11%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate			1.21%	2.46%	2.36%
Performance Based Restricted Stock Units (PBRSUs) [Member] | 2020 PBRSU [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock units (RSUs) granted			290,202
Performance Based Restricted Stock Units (PBRSUs) [Member] | 2019 PBRSU [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock units (RSUs) granted				214,651
Performance Based Restricted Stock Units (PBRSUs) [Member] | 2018 PBRSU [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock units (RSUs) granted					241,284
Performance Based Restricted Stock Units (PBRSUs) [Member] | Minimum [Member] | 2020 PBRSU [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award Payout Range			0.00%
Performance Based Restricted Stock Units (PBRSUs) [Member] | Minimum [Member] | 2019 PBRSU [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award Payout Range				0.00%
Performance Based Restricted Stock Units (PBRSUs) [Member] | Minimum [Member] | 2018 PBRSU [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award Payout Range					0.00%
Performance Based Restricted Stock Units (PBRSUs) [Member] | Maximum [Member] | 2020 PBRSU [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award Payout Range			200.00%
Performance Based Restricted Stock Units (PBRSUs) [Member] | Maximum [Member] | 2019 PBRSU [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award Payout Range				200.00%
Performance Based Restricted Stock Units (PBRSUs) [Member] | Maximum [Member] | 2018 PBRSU [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award Payout Range					200.00%

Share-Based Compensation And _4

Share-Based Compensation And Other Compensation Arrangements (Schedule Of Share-Based Plans Expense And Related Income Tax Benefit) (Details)1 - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Income tax benefit	$ 53	$ 47	$ 46
Restricted Stock Units and Other Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based plans expense	$ 243	$ 217	$ 213

Share-Based Compensation And _5

Share-Based Compensation And Other Compensation Arrangements (Schedule Of Stock Option Activity) (Details)2 $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2020USD ($)$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Shares, Outstanding at beginning of year | shares	2,375,583
Shares, Exercised | shares	(515,063)
Shares, Outstanding at end of year | shares	1,860,520
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Weighted Average Exercise Price Per Share, Outstanding at beginning of year | $ / shares	$ 74.79
Weighted Average Exercise Price Per Share, Exercised | $ / shares	71.47
Weighted Average Exercise Price Per Share, Outstanding at end of year | $ / shares	$ 75.71
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Weighted Average Remaining Contractual Life (Years), Outstanding at end of year	1 year 7 months 24 days
Aggregate Intrinsic Value, Outstanding at end of year | $	$ 257
Shares, Exercisable at end of year | shares	1,860,520
Weighted Average Exercise Price Per Share, Exercisable at end of year | $ / shares	$ 75.71
Weighted Average Remaining Contractual Life (Years), Exercisable at end of year	1 year 7 months 24 days
Aggregate Intrinsic Value, Exercisable at end of year | $	$ 257

Share-Based Compensation And _6

Share-Based Compensation And Other Compensation Arrangements (Schedule of Restricted Stock Unit Award Activity) (Details)3 $ in Millions	12 Months Ended
	Dec. 31, 2020USD ($)shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term	1 year 7 months 24 days
Incentive Program Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of units, Outstanding at beginning of year	905,025
Restricted stock units (RSUs) granted	1,103,608
Number of units, Dividends	7,091
Number of units, Forfeited	(104,374)
Number of units, Distributed	(487,749)
Number of units, Outstanding at end of year	1,423,601
Total unrecognized compensation cost | $	$ 237
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term	2 years 6 months
Employee Incentive Program Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock units (RSUs) granted	5,163,425
Number of units, Outstanding at end of year	5,163,425
Total unrecognized compensation cost | $	$ 973
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term	3 years
Other Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of units, Outstanding at beginning of year	908,321
Restricted stock units (RSUs) granted	196,818
Number of units, Dividends	7,303
Number of units, Forfeited	(33,896)
Number of units, Distributed	(329,227)
Number of units, Outstanding at end of year	749,319
Total unrecognized compensation cost | $	$ 102
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term	2 years

Share-Based Compensation And _7

Share-Based Compensation And Other Compensation Arrangements Schedule of PBRSUs Grant Fair Values (Details)4 - Performance Based Restricted Stock Units (PBRSUs) [Member] - $ / shares	Feb. 24, 2020	Feb. 25, 2019	Feb. 26, 2018
Schedule of Performance Based Restricted Stock Units Grant Date Fair values [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	3 years	3 years	3 years
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate	27.04%	23.88%	22.11%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate	1.21%	2.46%	2.36%
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 357.38	$ 466.04	$ 390.27

Share-Based Compensation And _8

Share-Based Compensation And Other Compensation Arrangements (Schedule Of Stock Unit Activity) (Details)5 $ in Millions	12 Months Ended
	Dec. 31, 2020USD ($)shares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term	1 year 7 months 24 days
Incentive Program Performance Based Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Number of units, Outstanding at beginning of year	826,126
Number of units, Granted	290,202
Share-based Compensation Arrangement by Share-based Payment Award, Other Share Increase (Decrease)	293,203	[1]
Number of units, Dividends	27,299
Number of units, Forfeited	(83,055)
Number of units, Distributed	(732,216)
Number of units, Outstanding at end of year	621,559
Unrecognized compensation cost | $	$ 93
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term	1 year 9 months 18 days
[1]	Represents net incremental number of units issued at vesting based on TSR for units granted in 2017.

Shareholders' Equity (Narrative

Shareholders' Equity (Narrative) (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019	Dec. 17, 2018
Equity, Class of Treasury Stock [Line Items]
Common stock, authorized	1,200,000,000	1,200,000,000
Preferred shares, authorized	20,000,000	20,000,000
2018 Program [Member]
Equity, Class of Treasury Stock [Line Items]
Amount approved to repurchase, shares, maximum			$ 20,000

Shareholders' Equity (Schedule

Shareholders' Equity (Schedule Of Changes In Each Class Of Shares) (Details) - shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Beginning balance, Common Stock	1,012,261,159	1,012,261,159	1,012,261,159
Ending balance, Common Stock	1,012,261,159	1,012,261,159	1,012,261,159
Treasury Stock, Number of Shares and Restriction Disclosures [Abstract]
Beginning balance, Treasury Stock	449,352,405	444,619,970	421,222,326
Stock Issued During Period, Shares, Treasury Stock Reissued	19,986,868	2,797,002	3,409,330
Acquired, Treasury Stock	575,484	7,529,437	26,806,974
Ending balance, Treasury Stock	429,941,021	449,352,405	444,619,970

Shareholders' Equity (Accumulat

Shareholders' Equity (Accumulated other comprehensive income) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Balance	[1]	$ (16,153)	$ (15,083)	$ (16,373)
OCI before reclassifications	[1]	(1,817)	(1,471)	517
Amounts reclassified from AOCI	[1]	837	401	773
Net current period OCI	[1]	(980)	(1,070)	1,290
Balance	[1]	(17,133)	(16,153)	(15,083)
Defined benefit pension plans & other postretirement benefits:
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax		917	464	878
Amortization of actuarial losses included in net periodic pension cost, tax		(52)	(133)	(242)
Currency Translation Adjustments [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Balance		(128)	(101)	(15)
OCI before reclassifications		98	(27)	(86)
Amounts reclassified from AOCI
Net current period OCI		98	(27)	(86)
Balance		(30)	(128)	(101)
Unrealized Gains and Losses on Certain Investments
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Balance		1	0	(2)
OCI before reclassifications			1	2
Amounts reclassified from AOCI
Net current period OCI			1	2
Balance		1	1	0
Unrealized Gains and Losses on Derivative Instruments
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Balance		(84)	(62)	54
OCI before reclassifications		14	(48)	(146)
Amounts reclassified from AOCI		27	26	30
Net current period OCI		41	(22)	(116)
Balance		(43)	(84)	(62)
Defined Benefit Pension Plans and Other Postretirement Benefits
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Balance		(15,942)	(14,920)	(16,410)
OCI before reclassifications		(1,929)	(1,397)	747
Amounts reclassified from AOCI		810	375	743	[2]
Net current period OCI		(1,119)	(1,022)	1,490
Balance		$ (17,061)	$ (15,942)	$ (14,920)
[1]	Net of tax.
[2]	Primarily relates to amortization of actuarial losses for the years ended December 31, 2020, 2019, and 2018 totaling $917, $464, and $878 (net of tax of ($52), ($133), and ($242)), respectively. These are included in the net periodic pension cost. See Note 16.

Derivative Financial Instrume_3

Derivative Financial Instruments (Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2020USD ($)
Summary of Derivative Instruments [Abstract]
Cash flow hedge gain/(loss) to be reclassified during the next 12 months, pre-tax	$ (2)
Fair value of foreign exchange and commodity contracts that have credit-risk-related contingent features that are in a net liability position	3
Derivative Instruments, Gain (Loss) [Line Items]
Cash flow hedge gain/(loss) to be reclassified during the next 12 months, pre-tax	(2)
Fair value of foreign exchange and commodity contracts that have credit-risk-related contingent features that are in a net liability position	$ 3

Derivative Financial Instrume_4

Derivative Financial Instruments (Schedule Of Notional Amounts And Fair Values Of Derivative Instruments) (Details) - USD ($) $ in Millions		Dec. 31, 2020	Dec. 31, 2019
Derivative [Line Items]
Derivative, Notional Amount	[1]	$ 4,671	$ 5,164
Other assets		107	34
Accrued liabilities		(100)	(138)
Derivative Asset, Collateral, Obligation to Return Cash, Offset		(31)	(20)
Derivative Liability, Collateral, Right to Reclaim Cash, Offset		31	20
Net recorded balance, Other assets		76	14
Net recorded balance, Accrued liabilities		(69)	(118)
Foreign Exchange Contracts [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative, Notional Amount		2,594	2,590
Other assets		81	29
Accrued liabilities		(24)	(60)
Foreign Exchange Contracts [Member] | Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative, Notional Amount		769	285
Other assets		22	1
Accrued liabilities		(16)	(6)
Commodity Contracts [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative, Notional Amount		404	645
Other assets		4	4
Accrued liabilities		(43)	(72)
Commodity Contracts [Member] | Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative, Notional Amount		904	$ 1,644
Accrued liabilities		$ (17)
[1]	Notional amounts represent the gross contract/notional amount of the derivatives outstanding.

Derivative Financial Instrume_5

Derivative Financial Instruments (Schedule Of Derivative Instruments, Gains/(Losses) In Statement Of Financial Performance) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Foreign Exchange Contracts [Member]
Derivative [Line Items]
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax	$ 44	$ 15
Commodity Contracts [Member]
Derivative [Line Items]
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax	$ (30)	$ (63)

Derivative Financial Instrume_6

Derivative Financial Instruments Derivative Financial Instruments (Schedule of Gains/(losses) reclassified from AOCI to Earnings) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Operating Expense [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax	$ (10)	$ 1
General and Administrative Expense [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax	(1)	1
Sales [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax	(3)
Operating Expense [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax	(14)	(26)
General and Administrative Expense [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax	$ (6)	$ (9)

Fair Value Measurements Fair Va

Fair Value Measurements Fair Value, Assets and Liabilities Measured on Recurring Basis (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Derivatives	$ 76	$ 14
Derivatives	(69)	(118)
Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Money market funds	2,230	2,562
Commercial Paper, at Carrying Value	149	108
Debt Securities, Available-for-sale	333	242
Available for Sale Securities, Government Agencies	114	55
Available-for-sale Securities, Equity Securities	54	33
Derivatives	76	14
Assets, Fair Value Disclosure	2,956	3,014
Derivatives	(69)	(118)
Total liabilities	(69)	(118)
Fair Value, Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Money market funds	2,230	2,562
Available for Sale Securities, Government Agencies		55
Available-for-sale Securities, Equity Securities	54	33
Assets, Fair Value Disclosure	2,284	2,650
Fair Value, Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Commercial Paper, at Carrying Value	149	108
Debt Securities, Available-for-sale	333	242
Available for Sale Securities, Government Agencies	114
Derivatives	76	14
Assets, Fair Value Disclosure	672	364
Derivatives	(69)	(118)
Total liabilities	$ (69)	$ (118)

Fair Value Measurements Fair _2

Fair Value Measurements Fair Value, Assets Measured on Nonrecurring Basis Using Unobservable Inputs (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]
Nonrecurring fair value losses	$ (410)	$ (443)	$ (93)
Fair Value Measurements Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]
Nonrecurring fair value losses	(410)	(443)
Fair Value Measurements Nonrecurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	504	183
Investments [Member] | Fair Value Measurements Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]
Nonrecurring fair value losses	(81)	(109)
Investments [Member] | Fair Value Measurements Nonrecurring [Member] | Level 3 [Member] | Valuation, Income Approach [Member]
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	22	27
Operating Lease Equipment And Assets Held For Sale Or Re-Lease [Member] | Fair Value Measurements Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]
Nonrecurring fair value losses	(24)	(20)
Operating Lease Equipment And Assets Held For Sale Or Re-Lease [Member] | Fair Value Measurements Nonrecurring [Member] | Level 3 [Member] | Valuation, Market Approach [Member]
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	105	111
Other assets and Acquired intangible assets [Member] | Fair Value Measurements Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]
Nonrecurring fair value losses	(221)	(310)
Other assets and Acquired intangible assets [Member] | Fair Value Measurements Nonrecurring [Member] | Level 3 [Member] | Valuation, Income Approach [Member]
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	298	4
Property, Plant and Equipment [Member] | Fair Value Measurements Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]
Nonrecurring fair value losses	(84)	(4)
Property, Plant and Equipment [Member] | Fair Value Measurements Nonrecurring [Member] | Level 3 [Member] | Valuation, Income Approach [Member]
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	$ 79	$ 41

Fair Value Measurements Fair _3

Fair Value Measurements Fair Value, Assets Measured On Nonrecurring Basis, Valuation Techniques (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Aircraft Value Publications [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Equipment under operating leases & Assets held for sale or re-lease, Range	$ 116
Aircraft Value Publications [Member] | Minimum [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Equipment under operating leases & Assets held for sale or re-lease, Range	85
Aircraft Value Publications [Member] | Maximum [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Equipment under operating leases & Assets held for sale or re-lease, Range	169
Aircraft Condition Adjustments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Equipment under operating leases & Assets held for sale or re-lease, Range	(11)
Aircraft Condition Adjustments [Member] | Minimum [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Equipment under operating leases & Assets held for sale or re-lease, Range	(14)
Aircraft Condition Adjustments [Member] | Maximum [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Equipment under operating leases & Assets held for sale or re-lease, Range	3
Fair Value Measurements Nonrecurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Assets, Fair Value Disclosure	504	$ 183
Fair Value Measurements Nonrecurring [Member] | Level 3 [Member] | Valuation, Market Approach [Member] | Operating Lease Equipment And Assets Held For Sale Or Re-Lease [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Assets, Fair Value Disclosure	$ 105	$ 111

Fair Value Measurements Fair _4

Fair Value Measurements Fair Values And Related Carrying Values of Financial Instruments (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Notes receivable, net	$ 420	$ 443
Notes receivable, Fair Value	488	444
Debt, excluding capital lease obligations, Carrying Amount	(63,380)	(20,964)
Debt, excluding capital lease obligations, Fair Value	(72,357)	(23,119)
Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Notes receivable, Fair Value	488	444
Debt, excluding capital lease obligations, Fair Value	(72,342)	(23,081)
Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt, excluding capital lease obligations, Fair Value	$ (15)	$ (38)

Legal Proceedings Legal Proceed

Legal Proceedings Legal Proceedings (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Dec. 31, 2020
Legal Proceedings [Line Items]
Deferred Prosecution Agreement Liability - Total Obligation		$ 2,510
Deferred Prosecution Agreement Liability		744
Controlling Interest Ownership Percentage After Acquisition	80.00%
Payments to Acquire Interest in Joint Venture	$ 4,200
Criminal Monetary Penalty [Member]
Legal Proceedings [Line Items]
Deferred Prosecution Agreement Liability		243.6
Beneficiary Compensation [Member]
Legal Proceedings [Line Items]
Deferred Prosecution Agreement Liability		500
Total Criminal Monetary Penalty and Beneficiary Compensation [Member]
Legal Proceedings [Line Items]
Deferred Prosecution Agreement Liability		$ 743.6

Segment and Revenue Informati_3

Segment and Revenue Information (Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2020USD ($)segments	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)
Segment Reporting Information [Line Items]
Number of Reportable Segments | segments	4
Percent of operating assets located outside the United States	4.00%	4.00%
Revenue, Remaining Performance Obligation, Amount	$ 363,404
Earnings from operations associated with our cost and equity method investments	$ 86	$ 90	$ 167
Within Next fiscal Year [Member]
Segment Reporting Information [Line Items]
Revenue, Remaining Performance Obligation, Percent Recognized	20.00%
Within Next 4 Fiscal Years [Member]
Segment Reporting Information [Line Items]
Revenue, Remaining Performance Obligation, Percent Recognized	66.00%
Sales [Member] | U.S. Government Contracts
Segment Reporting Information [Line Items]
Entity-Wide Revenue, Major Customer, Percentage	51.00%	39.00%	31.00%

Segment and Revenue Informati_4

Segment and Revenue Information (Schedule Of Revenue from External Customers Attributed to Foreign Countries by Geographic Area) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 15,304	$ 14,139	$ 11,807	$ 16,908	$ 17,911	$ 19,980	$ 15,751	$ 22,917	$ 58,158	$ 76,559	$ 101,127
Percentage Of Operating Assets Located Outside United States									4.00%	4.00%
Operating Segments [Member] | B-737-Max [Member] | Customer Concessions [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 128	$ 151	$ 551		$ 2,619		$ 5,610
Operating Segments [Member] | Commercial Airplanes
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									$ 16,162	$ 32,255	$ 57,499
Operating Segments [Member] | Commercial Airplanes | Fixed-price Contract [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue from Contract with Customer, excluding assessed tax, Percentage									100.00%	100.00%	100.00%
Operating Segments [Member] | Commercial Airplanes | Transferred at Point in Time [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue from Contract with Customer, excluding assessed tax, Percentage									100.00%	100.00%	100.00%
Operating Segments [Member] | Commercial Airplanes | External Customers [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax									$ 16,112	$ 31,903	$ 57,469
Operating Segments [Member] | Commercial Airplanes | B-737-Max [Member] | Customer Concessions [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax									(498)	(8,259)
Non-U.S.
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									21,677	42,137	56,451
Non-U.S. | Operating Segments [Member] | Commercial Airplanes
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax									8,711	27,486	42,122
Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									7,961	10,366	12,976
Europe | Operating Segments [Member] | Commercial Airplanes
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax									3,872	5,829	9,719
Asia, Other Than China
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									4,128	10,662	12,141
Asia, Other Than China | Operating Segments [Member] | Commercial Airplanes
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax									1,408	7,395	8,274
Middle East
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									5,308	9,272	9,745
Middle East | Operating Segments [Member] | Commercial Airplanes
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax									1,647	5,761	5,876
China
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									1,803	5,684	13,764
China | Operating Segments [Member] | Commercial Airplanes
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax									1,271	5,051	13,068
Canada
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									1,302	2,019	2,583
Oceania
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									832	2,006	2,298
Africa
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									114	1,113	1,486
Latin America, Caribbean And Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									229	1,015	1,458
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									36,979	42,681	44,676
United States | Operating Segments [Member] | Commercial Airplanes
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax									$ 7,899	$ 12,676	$ 15,347

Segment and Revenue Informati_5

Segment and Revenue Information Segment and Revenue Information (Schedule of Revenue Disaggregation) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disaggregation of Revenue [Line Items]
Revenues	$ 15,304	$ 14,139	$ 11,807	$ 16,908	$ 17,911	$ 19,980	$ 15,751	$ 22,917	$ 58,158	$ 76,559	$ 101,127
Europe
Disaggregation of Revenue [Line Items]
Revenues									7,961	10,366	12,976
Middle East
Disaggregation of Revenue [Line Items]
Revenues									5,308	9,272	9,745
Asia, Other Than China
Disaggregation of Revenue [Line Items]
Revenues									4,128	10,662	12,141
China
Disaggregation of Revenue [Line Items]
Revenues									1,803	5,684	13,764
Non-U.S.
Disaggregation of Revenue [Line Items]
Revenues									21,677	42,137	56,451
United States
Disaggregation of Revenue [Line Items]
Revenues									36,979	42,681	44,676
Operating Segments [Member] | B-737-Max [Member] | Customer Concessions [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 128	$ 151	$ 551		$ 2,619		$ 5,610
Operating Segments [Member] | Commercial Airplanes
Disaggregation of Revenue [Line Items]
Revenues									16,162	32,255	57,499
Operating Segments [Member] | Commercial Airplanes | B-737-Max [Member] | Customer Concessions [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax									(498)	(8,259)
Operating Segments [Member] | Commercial Airplanes | External Customers [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax									$ 16,112	$ 31,903	$ 57,469
Operating Segments [Member] | Commercial Airplanes | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, excluding assessed tax, Percentage									100.00%	100.00%	100.00%
Operating Segments [Member] | Commercial Airplanes | Transferred at Point in Time [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, excluding assessed tax, Percentage									100.00%	100.00%	100.00%
Operating Segments [Member] | Commercial Airplanes | Europe
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax									$ 3,872	$ 5,829	$ 9,719
Operating Segments [Member] | Commercial Airplanes | Middle East
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax									1,647	5,761	5,876
Operating Segments [Member] | Commercial Airplanes | Asia, Other Than China
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax									1,408	7,395	8,274
Operating Segments [Member] | Commercial Airplanes | China
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax									1,271	5,051	13,068
Operating Segments [Member] | Commercial Airplanes | Other
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax									513	3,450	5,185
Operating Segments [Member] | Commercial Airplanes | Non-U.S.
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax									8,711	27,486	42,122
Operating Segments [Member] | Commercial Airplanes | United States
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax									7,899	12,676	15,347
Operating Segments [Member] | Defense, Space & Security
Disaggregation of Revenue [Line Items]
Revenues									$ 26,257	$ 26,095	$ 26,300
Operating Segments [Member] | Defense, Space & Security | U.S. Government Contracts
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, excluding assessed tax, Percentage									89.00%	89.00%	88.00%
Operating Segments [Member] | Defense, Space & Security | Transferred over Time [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, excluding assessed tax, Percentage									98.00%	98.00%	98.00%
Operating Segments [Member] | Defense, Space & Security | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, excluding assessed tax, Percentage									69.00%	70.00%	70.00%
Operating Segments [Member] | Defense, Space & Security | Non-U.S.
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax									$ 6,595	$ 6,630	$ 6,812
Operating Segments [Member] | Defense, Space & Security | United States
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax									19,662	19,465	19,488
Operating Segments [Member] | Global Services
Disaggregation of Revenue [Line Items]
Revenues									15,543	18,468	17,056
Operating Segments [Member] | Global Services | Commercial Customers
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax									6,936	10,167	9,227
Operating Segments [Member] | Global Services | Government Customers [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax									$ 8,368	$ 8,107	$ 7,658
Operating Segments [Member] | Global Services | U.S. Government Contracts
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, excluding assessed tax, Percentage									41.00%	34.00%	36.00%
Operating Segments [Member] | Global Services | External Customers [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax									$ 15,304	$ 18,274	$ 16,885
Operating Segments [Member] | Global Services | Transferred at Point in Time [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, excluding assessed tax, Percentage									47.00%	55.00%	54.00%
Operating Segments [Member] | Global Services | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, excluding assessed tax, Percentage									87.00%	90.00%	90.00%
Intersegment Eliminations [Member] | Commercial Airplanes
Disaggregation of Revenue [Line Items]
Revenues									$ 50	$ 352	$ 30
Intersegment Eliminations [Member] | Global Services
Disaggregation of Revenue [Line Items]
Revenues									$ 239	$ 194	$ 171

Segment and Revenue Informati_6

Segment and Revenue Information (Schedule Of Unallocated Items and Eliminations) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Jun. 30, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Segment Reporting Information [Line Items]
Share-based plans		$ (250)	$ (212)	$ (202)
Deferred compensation		(93)	(174)	(19)
Amortization of previously capitalized interest		(81)	(83)	(81)
Research and Development Expense		(2,476)	(3,219)	(3,269)
Nonrecurring fair value losses		(410)	(443)	(93)
Litigation Settlement, Expense	$ (109)
Corporate Reconciling Items And Eliminations [Member]
Segment Reporting Information [Line Items]
Share-based plans		(120)	(65)	(76)
Deferred compensation		(93)	(174)	(19)
Amortization of previously capitalized interest		(95)	(89)	(92)
Research and Development Expense		(240)	(401)	(144)
Nonrecurring fair value losses			(250)
Litigation Settlement, Expense			(109)	(148)
Eliminations and other unallocated items		1,807	985	998
Operating Loss Excluding Unallocated Pension and Postretirement Adjustments		(2,355)	(2,073)	(1,477)
FAS/CAS Service Cost Adjustment		1,383	1,415	1,327
Corporate Reconciling Items And Eliminations [Member] | Pension [Member]
Segment Reporting Information [Line Items]
FAS/CAS Service Cost Adjustment		1,024	1,071	1,005
Corporate Reconciling Items And Eliminations [Member] | Postretirement [Member]
Segment Reporting Information [Line Items]
FAS/CAS Service Cost Adjustment		$ 359	$ 344	$ 322

Segment and Revenue Informati_7

Segment and Revenue Information (Reconciliation of Assets from Segment to Consolidated) (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Assets	$ 152,136	$ 133,625
Operating Segments [Member] | Commercial Airplanes
Segment Reporting Information [Line Items]
Assets	77,973	73,995
Operating Segments [Member] | Defense, Space & Security
Segment Reporting Information [Line Items]
Assets	14,256	15,757
Operating Segments [Member] | Global Services
Segment Reporting Information [Line Items]
Assets	17,399	18,605
Operating Segments [Member] | Boeing Capital Corporation
Segment Reporting Information [Line Items]
Assets	1,978	2,269
Corporate Reconciling Items And Eliminations [Member]
Segment Reporting Information [Line Items]
Assets	$ 40,530	$ 22,999

Segment and Revenue Informati_8

Segment and Revenue Information (Schedule Of Capital Expenditures By Segment) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Segment Reporting Information [Line Items]
Capital expenditures	$ 1,303	$ 1,834	$ 1,722
Operating Segments [Member] | Commercial Airplanes
Segment Reporting Information [Line Items]
Capital expenditures	322	433	604
Operating Segments [Member] | Defense, Space & Security
Segment Reporting Information [Line Items]
Capital expenditures	172	189	201
Operating Segments [Member] | Global Services
Segment Reporting Information [Line Items]
Capital expenditures	127	218	231
Corporate Reconciling Items And Eliminations [Member]
Segment Reporting Information [Line Items]
Capital expenditures	$ 682	$ 994	$ 686

Segment and Revenue Informati_9

Segment and Revenue Information (Schedule Of Depreciation And Amortization Expense By Segment) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Segment Reporting Information [Line Items]
Depreciation and amortization	$ 2,246	$ 2,271	$ 2,114
Operating Segments [Member] | Commercial Airplanes
Segment Reporting Information [Line Items]
Depreciation and amortization	559	580	565
Depreciation and Amortization Expense, Business Segment Allocation	397	407	417
Operating Segments [Member] | Defense, Space & Security
Segment Reporting Information [Line Items]
Depreciation and amortization	251	256	270
Depreciation and Amortization Expense, Business Segment Allocation	236	257	213
Operating Segments [Member] | Global Services
Segment Reporting Information [Line Items]
Depreciation and amortization	408	424	348
Depreciation and Amortization Expense, Business Segment Allocation	56	53	62
Operating Segments [Member] | Boeing Capital Corporation [Member]
Segment Reporting Information [Line Items]
Depreciation and amortization	66	64	58
Corporate Reconciling Items And Eliminations [Member]
Segment Reporting Information [Line Items]
Depreciation and amortization	962	947	873
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Depreciation and Amortization Expense, Business Segment Allocation	$ 689	$ 717	$ 692

Quarterly Financial Data (Narra

Quarterly Financial Data (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended									12 Months Ended
	Dec. 31, 2020		Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2018	Dec. 31, 2020	Dec. 31, 2019		Dec. 31, 2018
Schedule of Quarterly Financial Information [Line Items]
Abnormal Production Costs				$ 133	$ 137
Increase/(Decrease) in Earnings from operations due to change in accounting estimate.										$ (942)	$ (111)		$ (190)
Investment/asset impairment charges, net										410	443		93
Litigation Settlement, Expense							$ 109
Gain (Loss) on Disposition of Business						$ 395
Effective Income Tax Rate Reconciliation, Tax Settlement, Amount	$ (587)	[1]				371			$ 412		(371)	[1]	(412)	[1]
Employee Severance [Member]
Schedule of Quarterly Financial Information [Line Items]
Postemployment Benefits, Period Expense			$ 328	652						289
Operating Segments [Member]
Schedule of Quarterly Financial Information [Line Items]
Litigation Settlement, Expense							109
Operating Segments [Member] | Global Services
Schedule of Quarterly Financial Information [Line Items]
Investment/asset impairment charges, net	290			859
Operating Segments [Member] | Global Services | Trade Names [Member]
Schedule of Quarterly Financial Information [Line Items]
Impairment of Intangible Assets (Excluding Goodwill)						293
Lease Incentive Receivable [Member]
Schedule of Quarterly Financial Information [Line Items]
Investment/asset impairment charges, net								$ 250
KC-46A Tanker [Member]
Schedule of Quarterly Financial Information [Line Items]
Increase/(Decrease) in Earnings from operations due to change in accounting estimate.	275		67	151	827	108				1,320	(148)		(736)
Commercial Crew [Member]
Schedule of Quarterly Financial Information [Line Items]
Increase/(Decrease) in Earnings from operations due to change in accounting estimate.						410					(489)
VC-25B [Member]
Schedule of Quarterly Financial Information [Line Items]
Increase/(Decrease) in Earnings from operations due to change in accounting estimate.					168
B-737-Max [Member]
Schedule of Quarterly Financial Information [Line Items]
Abnormal Production Costs	468		590	712	$ 797
B-737-Max [Member] | Operating Segments [Member] | Customer Concessions [Member]
Schedule of Quarterly Financial Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 128		$ 151	$ 551		$ 2,619	$ 5,610
B-737-Max [Member] | Operating Segments [Member] | Commercial Airplanes | Customer Concessions [Member]
Schedule of Quarterly Financial Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax										$ (498)	$ (8,259)
[1]	In the fourth quarter of 2020, we recorded a tax benefit of $587 related to the settlement of the 2015-2017 federal tax audit. In the fourth quarter of 2019, we recorded a tax benefit of $371 related to the settlement of state tax audits spanning 15 tax years. In the third quarter of 2018, we recorded a tax benefit of $412 related to the settlement of the 2013-2014 federal tax audit.

Quarterly Financial Data (Sched

Quarterly Financial Data (Schedule Of Quarterly Financial Data) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract]
Revenues	$ 15,304	$ 14,139	$ 11,807	$ 16,908	$ 17,911	$ 19,980	$ 15,751	$ 22,917	$ 58,158	$ 76,559	$ 101,127
Cost of Revenue	20,992	13,105	12,978	16,768	18,708	16,930	17,810	18,645	63,843	72,093	81,490
Earnings from operations	(8,049)	(401)	(2,964)	(1,353)	(2,204)	1,259	(3,380)	2,350	(12,767)	(1,975)	11,987
Net (loss)/earnings attributable to Boeing Shareholders	$ (8,420)	$ (449)	$ (2,376)	$ (628)	$ (1,010)	$ 1,167	$ (2,942)	$ 2,149	$ (11,873)	$ (636)	$ 10,460
Basic (loss)/earnings per share	$ (14.65)	$ (0.79)	$ (4.20)	$ (1.11)	$ (1.79)	$ 2.07	$ (5.21)	$ 3.79	$ (20.88)	$ (1.12)	$ 18.05
Diluted earnings per share	$ (14.65)	$ (0.79)	$ (4.20)	$ (1.11)	$ (1.79)	$ 2.05	$ (5.21)	$ 3.75	$ (20.88)	$ (1.12)	$ 17.85

Uncategorized Items - ba-202012

Label	Element	Value
Treasury Stock [Member]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	$ (54,914,000,000)
Common Stock [Member]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	5,061,000,000
AOCI Attributable to Parent [Member]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	(16,153,000,000)
Additional Paid-in Capital [Member]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	6,745,000,000
Noncontrolling Interest [Member]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	317,000,000
Equity Securities [Member] | Non United States Common And Preferred Stock [Member] | Fair Value, Inputs, Level 3 [Member] | Pension Plan [Member]
Defined Benefit Plan, Plan Assets Level 3 Reconciliation, Increase (Decrease) for Assets Transferred into (out of) Level 3	us-gaap_DefinedBenefitPlanTransfersBetweenMeasurementLevels	1,000,000
Defined Benefit Plan, Plan Assets Level 3 Reconciliation, Increase (Decrease) for Purchase, Sale, and Settlement	us-gaap_DefinedBenefitPlanPurchasesSalesAndSettlements	1,000,000
Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	(8,462,000,000)
Cumulative Effect, Period of Adoption, Adjusted Balance [Member] | Retained Earnings [Member]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	$ 50,482,000,000