The Boeing Company (BA) 10-Q 24 Oct 18 2018 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2018	Oct. 17, 2018
Document Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q3
Entity Registrant Name	BOEING CO
Entity Central Index Key	12,927
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		567,885,369
Entity Current Reporting Status	Yes
Entity Emerging Growth Company	false
Entity Small Business	false

Condensed Consolidated Statemen

Condensed Consolidated Statements Of Operations - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Condensed Income Statements, Captions [Line Items]
Revenues	$ 25,146	$ 24,223	$ 72,786	$ 69,235
Boeing Capital interest expense	(18)	(27)	(51)	(53)
Total costs and expenses	(21,040)	(19,956)	(59,400)	(56,731)
Gross profit	4,106	4,267	13,386	12,504
Income from operating investments, net	32	49	112	169
General and administrative expense	(1,154)	(918)	(3,345)	(2,890)
Research and development expense, net	(826)	(768)	(2,417)	(2,417)
Gain on dispositions, net	69		76
Earnings from operations	2,227	2,630	7,812	7,366
Other income, net	12	40	63	91
Interest and debt expense	(106)	(87)	(317)	(267)
Earnings before income taxes	2,133	2,583	7,558	7,190
Income tax (expense)/benefit	230	(773)	(522)	(2,052)
Net earnings	$ 2,363	$ 1,810	$ 7,036	$ 5,138
Basic earnings per share	$ 4.11	$ 3.03	$ 12.08	$ 8.49
Diluted earnings per share	4.07	2.99	11.95	8.39
Cash dividends paid per share	$ 1.71	$ 1.42	$ 5.13	$ 4.26
Weighted average diluted shares (millions)	580.8	606.3	588.9	612.8
Product [Member]
Condensed Income Statements, Captions [Line Items]
Revenues	$ 22,463	$ 21,782	$ 64,848	$ 61,667
Cost of Goods and Services Sold	(18,882)	(18,050)	(53,134)	(50,936)
Service [Member]
Condensed Income Statements, Captions [Line Items]
Revenues	2,683	2,441	7,938	7,568
Cost of Goods and Services Sold	$ (2,140)	$ (1,879)	$ (6,215)	$ (5,742)

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Statement of Comprehensive Income [Abstract]
Net earnings	$ 2,363	$ 1,810	$ 7,036	$ 5,138
Currency translation adjustments	2	44	(55)	121
Unrealized gain/(loss) on certain investments, net of tax of $0, $0, ($1) and $0			3
Unrealized (loss)/gain on derivative instruments [Abstract]
Unrealized (loss)/gain arising during period, net of tax of $1, ($22), $27 and ($61)	(4)	40	(97)	111
Reclassification adjustment for losses included in net earnings, net of tax of ($3), ($5), ($5) and ($24)	9	10	19	44
Total unrealized (loss)/gain on derivative instruments, net of tax	5	50	(78)	155
Defined benefit pension plans & other postretirement benefits [Abstract]
Amortization of prior service credits included in net periodic pension cost, net of tax of $10, $16, $30 and $47	(35)	(27)	(106)	(84)
Net actuarial gain arising during the period, net of tax of $0, $0, $0 and $(1)			1	3
Amortization of actuarial losses included in net periodic pension cost, net of tax of ($60), ($72), ($182) and ($217)	219	131	657	394
Settlements and curtailments included in net income, net of tax of $0, $0, ($3) and $0			6
Pension and postretirement cost related to our equity method investments, net of tax of $0, $0, $1 and $1	(1)		(4)	(2)
Total defined benefit pension plans and other postretirement benefits, net of tax	183	104	554	311
Other comprehensive income, net of tax	190	198	424	587
Comprehensive income related to noncontrolling interests	(2)		(12)	(1)
Comprehensive income, net of tax	$ 2,551	$ 2,008	$ 7,448	$ 5,724

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Statement of Comprehensive Income [Abstract]
Unrealized (loss)/gain on certain investments, tax			$ (1)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax [Abstract]
Unrealized loss arising during period, tax	$ 1	$ (22)	27	$ (61)
Reclassification adjustment for losses included in net earnings, tax	(3)	(5)	(5)	(24)
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Tax, Portion Attributable to Parent [Abstract]
Amortization of prior service cost included in net periodic pension cost, tax	10	16	30	47
Net actuarial gains arising during the period, tax				(1)
Amortization of actuarial losses included in net periodic pension cost, tax	$ (60)	$ (72)	(182)	(217)
Settlements and curtailments included in net income, tax			(3)
Pension and post retirement benefits related to our equity method investments, tax			$ 1	$ 1

Condensed Consolidated Statem_4

Condensed Consolidated Statements Of Financial Position - USD ($) $ in Millions		Sep. 30, 2018	Dec. 31, 2017
Assets
Cash and cash equivalents		$ 8,034	$ 8,813
Short-term and other investments		1,956	1,179
Accounts receivable, net		2,893	2,894
Unbilled receivables, net		9,936	8,194
Current portion of customer financing, net		431	309
Inventories		62,038	61,388
Other current assets		2,398	2,417
Total current assets		87,686	85,194
Customer financing, net		2,785	2,756
Property, plant and equipment, net of accumulated depreciation of $18,328 and $17,641		12,571	12,672
Goodwill		5,722	5,559
Acquired intangible assets, net		2,530	2,573
Deferred income taxes		323	321
Investments		1,190	1,260
Other assets, net of accumulated amortization of $466 and $482		1,852	2,027
Total assets		114,659	112,362
Liabilities and equity
Accounts payable		13,663	12,202
Accrued liabilities		12,869	13,069
Advances and progress billings		51,496	48,042
Short-term debt and current portion of long-term debt		1,389	1,335
Total current liabilities		79,417	74,648
Deferred income taxes		1,738	2,188
Accrued retiree health care		5,394	5,545
Accrued pension plan liability, net		15,927	16,471
Other long-term liabilities		2,905	2,015
Long-term debt		10,487	9,782
Shareholders' equity:
Common stock, par value $5.00 – 1,200,000,000 shares authorized; 1,012,261,159 shares issued		5,061	5,061
Additional paid-in capital		6,714	6,804
Treasury stock, at cost - 443,262,126 and 421,222,326 shares		51,781	43,454
Retained earnings		54,666	49,618
Accumulated other comprehensive loss	[1]	(15,949)	(16,373)
Total shareholders’ equity		(1,289)	1,656
Noncontrolling interests		80	57
Total equity		(1,209)	1,713
Total liabilities and equity		$ 114,659	$ 112,362
[1]	Net of tax.

Condensed Consolidated Statem_5

Condensed Consolidated Statements Of Financial Position (Parenthetical) - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Property, plant and equipment, accumulated depreciation	$ 18,328	$ 17,641
Other assets, accumulated amortization	$ 466	$ 482
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
Treasury stock, shares	443,262,126	421,222,327

Condensed Consolidated Statem_6

Condensed 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]
Balance at Dec. 31, 2016	$ 1,917	$ 5,061	$ 4,762	$ (36,097)	$ 41,754	$ (13,623)	$ 60
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	5,137				5,138		(1)
Other comprehensive income, net of tax of ($133) in 2018 and ($255) in 2017	587					587
Share-based compensation and related dividend equivalents	150		168		(18)
Treasury shares issued for stock options exercised, net	290		(80)	370
Treasury shares issued for other share-based plans, net	(114)		(178)	64
Defined Benefit Plan, Plan Assets, Contributions by Employer	3,500		2,082	1,418
Common shares repurchased	(7,500)			(7,500)
Dividends, Common Stock, Cash	(1,709)				(1,709)
Balance at Sep. 30, 2017	2,258	5,061	6,754	(41,745)	45,165	(13,036)	59
Balance at Dec. 31, 2017	1,713	5,061	6,804	(43,454)	49,618	(16,373)	57
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	7,024				7,036		(12)
Other comprehensive income, net of tax of ($133) in 2018 and ($255) in 2017	424					424
Share-based compensation and related dividend equivalents	150		167		(17)
Treasury shares issued for stock options exercised, net	70		(37)	107
Treasury shares issued for other share-based plans, net	(239)		(220)	(19)
Common shares repurchased	(8,415)			(8,415)
Dividends, Common Stock, Cash	(1,971)				(1,971)
Changes in noncontrolling interests	35						35
Balance at Sep. 30, 2018	$ (1,209)	$ 5,061	$ 6,714	$ (51,781)	$ 54,666	$ (15,949)	$ 80

Condensed Consolidated Statem_7

Condensed Consolidated Statements Of Equity (Parenthetical) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Statement of Stockholders' Equity [Abstract]
Other Comprehensive Income, tax, portion attributable to parent	$ (133)	$ (255)
Common Stock, Dividends, Per Share, Declared	$ 3.42	$ 2.84

Condensed Consolidated Statem_8

Condensed Consolidated Statement of Cash Flows Consolidated Statements of Cash Flows - USD ($) $ in Millions		3 Months Ended		9 Months Ended		12 Months Ended
		Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Cash flows - operation activities:
Net earnings		$ 2,363	$ 1,810	$ 7,036	$ 5,138
Non-cash items -
Share-based plans expense				150	151
Depreciation and amortization				1,531	1,470
Asset Impairment Charges				63	75
Customer financing valuation (benefit)/expense				(3)	4
Gain on dispositions, net		69		76
Other charges and credits, net				(158)	(196)
Changes in assets and liabilities -
Accounts receivable				(10)	558
Unbilled receivables				1,732	1,805
Advances and progress billings				3,457	4,714
Inventories				173	800
Other current assets				5	337
Accounts payable				1,181	780
Accrued liabilities				890	(102)
Income taxes receivable, payable and deferred				(252)	1,507
Other long-term liabilities				1	25
Pension and other postretirement plans				(89)	(550)
Customer financing, net				(175)	634
Other				(403)	99
Net cash provided by operating activities				12,375	10,443
Cash flows - investing activities:
Payments to Acquire Property, Plant, and Equipment				1,227	1,304
Property, plant and equipment reductions				117	30
Acquisitions, net of cash acquired				250
Contributions to investments				2,145	2,815
Proceeds from investments				1,369	2,612
Purchase of distribution rights				(56)	(131)
Other				(5)	7
Net cash provided/(used) by investing activities				(2,197)	(1,601)
Cash flows - financing activities:
New borrowings				4,696	876
Debt repayments				4,029	83
Contributions from noncontrolling interests				35
Stock options exercised				70	291
Employee taxes on certain share-based payment arrangements				247	118
Common shares repurchased				8,415	7,500
Dividends paid				2,976	2,575
Net cash used by financing activities				(10,866)	(9,109)
Effect of exchange rate changes on cash and cash equivalents, including restricted				(37)	73
Net decrease in cash & cash equivalents, including restricted				(725)	(194)
Cash & cash equivalents, including restricted, at beginning of year				8,887	8,869	$ 8,869
Cash & cash equivalents, including restricted, at end of period		8,162	8,675	8,162	8,675	8,887
Restricted Cash and Cash Equivalents	[1]	(128)	(106)	(128)	(106)	(74)
Cash and cash equivalents at end of period		$ 8,034	$ 8,569	$ 8,034	$ 8,569	$ 8,813
[1]	Reflects amounts restricted in support of our workers’ compensation programs, employee benefit programs, and insurance premiums.

Summary Of Business Segment Dat

Summary Of Business Segment Data Summary of Business Segment Data (Notes)	9 Months Ended
	Sep. 30, 2018
Segment Reporting, Disclosure of Entity's Reportable Segments [Abstract]
Summary Of Business Segment Data	The Boeing Company and Subsidiaries Notes to Condensed Consolidated Financial Statements Summary of Business Segment Data (Unaudited) (Dollars in millions) Nine months ended September 30 Three months ended September 30 2018 2017 2018 2017 Revenues: Commercial Airplanes $43,409 $42,626 $15,276 $15,393 Defense, Space & Security 17,084 15,304 5,729 5,050 Global Services 12,124 10,784 4,091 3,579 Boeing Capital 214 234 77 70 Unallocated items, eliminations and other (45 ) 287 (27 ) 131 Total revenues $72,786 $69,235 $25,146 $24,223 Earnings/(loss) from operations: Commercial Airplanes $5,175 $3,665 $2,023 $1,513 Defense, Space & Security 925 1,649 (245 ) 486 Global Services 1,790 1,687 543 495 Boeing Capital 71 87 27 23 Segment operating profit 7,961 7,088 2,348 2,517 Unallocated items, eliminations and other (1,168 ) (771 ) (458 ) (233 ) FAS/CAS service cost adjustment 1,019 1,049 337 346 Earnings from operations 7,812 7,366 2,227 2,630 Other income, net 63 91 12 40 Interest and debt expense (317 ) (267 ) (106 ) (87 ) Earnings before income taxes 7,558 7,190 2,133 2,583 Income tax (expense)/benefit (522 ) (2,052 ) 230 (773 ) Net earnings $7,036 $5,138 $2,363 $1,810 This information is an integral part of the Notes to the Condensed Consolidated Financial Statements. See Note 19

Basis Of Presentation

Basis Of Presentation	9 Months Ended
	Sep. 30, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis Of Presentation	Basis of Presentation The condensed consolidated interim 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”). In the opinion of management, all adjustments (consisting of normal recurring accruals) necessary for a fair presentation are reflected in the interim financial statements. The results of operations for the period ended September 30, 2018 are not necessarily indicative of the operating results for the full year. The interim financial statements should be read in conjunction with the audited Consolidated Financial Statements, including the notes thereto, included in our 2017 Annual Report on Form 10-K. Prior period amounts have been adjusted to conform with the current year presentation. Standards Issued and Not Yet Implemented In February 2016, the Financial Accounting Standards Board issued Accounting Standards Update (ASU) 2016 - 02, Leases (Topic 842) . The new standard is effective for reporting periods beginning after December 15, 2018 and early adoption is permitted. The standard will require lessees to report most leases as assets and liabilities on the balance sheet, while lessor accounting will remain substantially unchanged. The standard permits two approaches, one requiring retrospective application of the new guidance with restatement of prior years, and one requiring prospective application of the new guidance. We plan to adopt the new lease standard effective January 1, 2019 and apply it prospectively. We do not expect the new lease standard to have a material effect on our financial position, results of operations or cash flows. Standards Issued and Implemented In the first quarter of 2018, we adopted the following ASUs: ASU 2014-09 , Revenue from Contracts with Customers (Topic 606); ASU 2017-07 , Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost; ASU 2016-18 Statement of Cash Flows (Topic 230): Restricted Cash; ASU 2018-02 , Income Statement—Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. The impact of the adoption of these standards to our unaudited Condensed Consolidated Financial Statements is presented in Note 2 and the additional disclosures are shown in Notes 6 and 19 . ASU 2014-09 In the first quarter of 2018, we adopted ASU 2014-09 , Revenue from Contracts with Customers (Topic 606) , using the full retrospective method. Topic 606 requires revenue to be recognized when promised goods or services are transferred to customers in amounts that reflect the consideration to which the Company expects to be entitled in exchange for those goods or services. Most of our defense contracts at our Defense, Space & Security ( BDS ) and Global Services ( BGS ) segments and certain military derivative aircraft contracts at our Commercial Airplanes ( BCA ) segment now recognize revenue under the new standard as costs are incurred. Under previous U.S. generally accepted accounting principles (GAAP), revenue was generally recognized when deliveries were made, performance milestones were attained, or as costs were incurred. The new standard accelerates the timing of when the revenue is recognized, however, it does not change the total amount of revenue recognized on these contracts. The new standard does not affect revenue recognition or the use of program accounting for commercial airplane contracts in our BCA business. We continue to recognize revenue for these contracts at the point in time when the customer accepts delivery of the airplane. The adoption resulted in a cumulative adjustment to increase Retained earnings by $901 at January 1, 2016 and an increase of $73 to Net earnings for the first nine months of 2017. ASU 2017-07 In the first quarter of 2018, we adopted ASU 2017-07 , Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost . The standard requires non-service cost components of net periodic benefit cost to be presented in non-operating earnings using a retrospective transition method. We applied a practical expedient as the estimation basis for the reclassification of prior period non-service cost components of net periodic benefit cost from Earnings from operations to Other income/(loss), net. Through the end of 2017, a portion of net periodic pension and other postretirement income or expense was not recognized in net earnings in the year incurred because it was allocated to production as product costs, and reflected in inventory at the end of the reporting periods. Effective January 1, 2018, in accordance with our adoption of ASU 2017-07, only service costs may be allocated to production costs and capitalized in inventory on a prospective basis. The impact of adoption was not material. ASU 2016-18 In the first quarter of 2018, we adopted ASU 2016-18 , Statement of Cash Flows (Topic 230): Restricted Cash. The standard requires companies to include restricted amounts with Cash & cash equivalents when reconciling the beginning and end of period total amounts shown on the Statements of Cash Flows. The impact of adoption was not material. ASU 2018-02 In the first quarter of 2018, we early adopted ASU 2018-02 , Income Statement—Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. The standard allows companies to reclassify from Accumulated other comprehensive income/loss to Retained earnings the difference between the historical corporate income tax rate of 35% and the 21% rate enacted in the Tax Cuts and Jobs Act (TCJA) in December 2017. This resulted in an increase of $2,997 to Retained earnings and an increase of $2,997 to Accumulated other comprehensive loss. Significant Accounting Policies - Update Our significant accounting policies are described in "Note 1: Summary of Significant Accounting Policies" of our Annual Report on Form 10-K for the year ended December 31, 2017. Our significant accounting policies described below reflect the impact of the adoption of Topic 606 in the first quarter of 2018. 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. 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 , certain military derivative aircraft contracts at BCA 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 reach-forward losses, across all long-term contracts were as follows: Nine months ended September 30 Three months ended September 30 2018 2017 2018 2017 Increase/(decrease) to Revenue ($14 ) $426 ($59 ) ($44 ) Increase/(decrease) to Earnings from Operations ($314 ) $207 ($155 ) ($215 ) Increase/(decrease) to Diluted EPS ($0.50 ) $0.24 ($0.30 ) ($0.25 ) 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

Impact of Adoption of New Stand

Impact of Adoption of New Standards Impact of Adoption of New Standards	9 Months Ended
	Sep. 30, 2018
Accounting Changes and Error Corrections [Abstract]
New Accounting Pronouncements and Changes in Accounting Principles [Text Block]	In the first quarter of 2018, we adopted the following ASUs: ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606); ASU No. 2017-07, Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost; ASU 2016-18 Statement of Cash Flows (Topic 230) Restricted Cash; and ASU 2018-02 Income Statement—Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. The impact to our unaudited Condensed Consolidated Financial Statements as a result of adopting these standards was as follows: Condensed Consolidated Statement of Operations (Unaudited) Nine months ended September 30, 2017 Three months ended September 30, 2017 (Dollars in millions) Reported Impact of New Standards Restated Reported Impact of New Standards Restated Sales of products $60,484 $1,183 $61,667 $21,825 ($43 ) $21,782 Sales of services 7,540 28 7,568 2,484 (43 ) 2,441 Total revenues 68,024 1,211 69,235 24,309 (86 ) 24,223 Cost of products (49,856 ) (1,080 ) (50,936 ) (18,050 ) (18,050 ) Cost of services (5,730 ) (12 ) (5,742 ) (1,910 ) 31 (1,879 ) Boeing Capital interest expense (53 ) (53 ) (27 ) (27 ) Total costs and expenses (55,639 ) (1,092 ) (56,731 ) (19,987 ) 31 (19,956 ) 12,385 119 12,504 4,322 (55 ) 4,267 Income from operating investments, net 169 169 49 49 General and administrative expense (2,888 ) (2 ) (2,890 ) (915 ) (3 ) (918 ) Research and development expense, net (2,418 ) 1 (2,417 ) (767 ) (1 ) (768 ) Earnings from operations 7,248 118 7,366 2,689 (59 ) 2,630 Other income, net 94 (3 ) 91 45 (5 ) 40 Interest and debt expense (267 ) (267 ) (87 ) (87 ) Earnings before income taxes 7,075 115 7,190 2,647 (64 ) 2,583 Income tax expense (2,010 ) (42 ) (2,052 ) (794 ) 21 (773 ) Net earnings $5,065 $73 $5,138 $1,853 ($43 ) $1,810 Basic earnings per share $8.37 $0.12 $8.49 $3.10 ($0.07 ) $3.03 Diluted earnings per share $8.27 $0.12 $8.39 $3.06 ($0.07 ) $2.99 Condensed Consolidated Statement of Financial Position (Dollars in millions) December 31, 2017 Assets Reported Impact of New Standards Restated Cash and cash equivalents $8,813 $8,813 Short-term and other investments 1,179 1,179 Accounts receivable, net 10,516 ($7,622 ) 2,894 Unbilled receivables, net 8,194 8,194 Current portion of customer financing, net 309 309 Inventories 44,344 17,044 61,388 Other current assets 2,417 2,417 Total current assets 65,161 20,033 85,194 Customer financing, net 2,740 16 2,756 Property, plant and equipment, net 12,672 12,672 Goodwill 5,559 5,559 Acquired intangible assets, net 2,573 2,573 Deferred income taxes 341 (20 ) 321 Investments 1,260 1,260 Other assets, net of accumulated amortization 2,027 2,027 Total assets $92,333 $20,029 $112,362 Liabilities and equity Accounts payable $12,202 $12,202 Accrued liabilities 15,292 ($2,223 ) 13,069 Advances and billings in excess of related costs 27,440 (27,440 ) Advances and progress billings 48,042 48,042 Short-term debt and current portion of long-term debt 1,335 1,335 Total current liabilities 56,269 18,379 74,648 Deferred income taxes 1,839 349 2,188 Accrued retiree health care 5,545 5,545 Accrued pension plan liability, net 16,471 16,471 Other long-term liabilities 2,015 2,015 Long-term debt 9,782 9,782 Shareholders’ equity: Common stock 5,061 5,061 Additional paid-in capital 6,804 6,804 Treasury stock, at cost (43,454 ) (43,454 ) Retained earnings 45,320 4,298 49,618 Accumulated other comprehensive loss (13,376 ) (2,997 ) (16,373 ) Total shareholders’ equity 355 1,301 1,656 Noncontrolling interests 57 57 Total equity 412 1,301 1,713 Total liabilities and equity $92,333 $20,029 $112,362 Condensed Consolidated Statement of Cash Flows (Unaudited) (Dollars in millions) Nine months ended September 30, 2017 Reported Impact of New Standards Restated Cash flows - operating activities: Net earnings $5,065 $73 $5,138 Adjustments to reconcile net earnings to net cash provided by operating activities: Non-cash items - Share-based plans expense 151 151 Depreciation and amortization 1,487 (17 ) 1,470 Investment/asset impairment charges, net 75 75 Customer financing valuation expense 4 4 Other charges and credits, net 190 6 196 Changes in assets and liabilities - Accounts receivable (1,983 ) 1,425 (558 ) Unbilled receivables (1,805 ) (1,805 ) Advances and progress billings 4,714 4,714 Inventories 254 (1,054 ) (800 ) Other current assets (337 ) (337 ) Accounts payable 778 2 780 Accrued liabilities 112 (214 ) (102 ) Advances and billings in excess of related costs 2,828 (2,828 ) Income taxes receivable, payable and deferred 1,465 42 1,507 Other long-term liabilities 25 25 Pension and other postretirement plans (550 ) (550 ) Customer financing, net 635 (1 ) 634 Other (96 ) (3 ) (99 ) Net cash provided by operating activities 10,440 3 10,443 Cash flows - investing activities: Property, plant and equipment additions (1,304 ) (1,304 ) Property, plant and equipment reductions 30 30 Contributions to investments (2,847 ) 32 (2,815 ) Proceeds from investments 2,612 2,612 Purchase of distribution rights (131 ) (131 ) Other 4 3 7 Net cash used by investing activities (1,636 ) 35 (1,601 ) Cash flows - financing activities: New borrowings 876 876 Debt repayments (83 ) (83 ) Stock options exercised 291 291 Employee taxes on certain share-based payment arrangements (118 ) (118 ) Common shares repurchased (7,500 ) (7,500 ) Dividends paid (2,575 ) (2,575 ) Net cash used by financing activities (9,109 ) (9,109 ) Effect of exchange rate changes on cash & cash equivalents, including restricted 73 73 Net (decrease)/increase in cash & cash equivalents, including restricted (232 ) 38 (194 ) Cash & cash equivalents, including restricted*, at beginning of year 8,801 68 8,869 Cash & cash equivalents, including restricted*, at end of period $8,569 $106 8,675 Less restricted cash & cash equivalents, included in Investments 106 Cash and cash equivalents at end of period $8,569 * Reported balance excludes restricted amounts Condensed Consolidated Statements of Equity (Unaudited) Boeing shareholders (Dollars in millions) Common Stock Additional Paid-In Capital Treasury Stock Retained Earnings Accumulated Other Comprehensive Loss Non- controlling Interests Total Balance at January 1, 2017, as reported $5,061 $4,762 ($36,097 ) $40,714 ($13,623 ) $60 $877 Cumulative Impact of Topic 606 at 1/1/2016 901 901 Impact of Topic 606 on 2016 earnings 139 139 Balance at January 1, 2017, as restated $5,061 $4,762 ($36,097 ) $41,754 ($13,623 ) $60 $1,917 Boeing shareholders (Dollars in millions) Common Stock Additional Paid-In Capital Treasury Stock Retained Earnings Accumulated Other Comprehensive Loss Non- controlling Interests Total Balance at December 31, 2017, as reported $5,061 $6,804 ($43,454 ) $45,320 ($13,376 ) $57 $412 Cumulative Impact of Topic 606 at 1/1/2016 901 901 Impact of Topic 606 on 2016 earnings 139 139 Impact of Topic 606 on 2017 earnings 261 261 Total impact of ASC 606 through December 31, 2017 1,301 1,301 Impact of ASU 2018-02 2,997 (2,997 ) Balance at December 31, 2017, as restated $5,061 $6,804 ($43,454 ) $49,618 ($16,373 ) $57 $1,713

Earnings Per Share

Earnings Per Share	9 Months Ended
	Sep. 30, 2018
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) Nine months ended September 30 Three months ended September 30 2018 2017 2018 2017 Net earnings $7,036 $5,138 $2,363 $1,810 Less: earnings available to participating securities 5 4 2 2 Net earnings available to common shareholders $7,031 $5,134 $2,361 $1,808 Basic Basic weighted average shares outstanding 582.7 605.6 574.8 598.3 Less: participating securities 0.7 0.8 0.6 0.7 Basic weighted average common shares outstanding 582.0 604.8 574.2 597.6 Diluted Basic weighted average shares outstanding 582.7 605.6 574.8 598.3 Dilutive potential common shares (1) 6.2 7.2 6.0 8.0 Diluted weighted average shares outstanding 588.9 612.8 580.8 606.3 Less: participating securities 0.7 0.8 0.6 0.7 Diluted weighted average common shares outstanding 588.2 612.0 580.2 605.6 Net earnings per share: Basic $12.08 $8.49 $4.11 $3.03 Diluted 11.95 8.39 4.07 2.99 (1) Diluted earnings per share includes any dilutive impact of stock options, restricted stock units, performance-based restricted stock units and performance awards. 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 earnings per share because the effect was either antidilutive or the performance condition was not met. (Shares in millions) Nine months ended September 30 Three months ended September 30 2018 2017 2018 2017 Performance awards 2.6 4.6 2.2 3.4 Performance-based restricted stock units 0.3 0.6 0.2 0.1

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2018
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Our effective income tax rates were 6.9% and (10.8)% for the nine and three months ended September 30, 2018 and 28.5% and 29.9% for the same periods in the prior year. The 2018 tax rates reflect the enactment of the TCJA, which permanently reduced the U.S. corporate statutory rate from 35% to 21% effective January 1, 2018. The 2018 tax rates also reflect net favorable impacts of the TCJA provisions which effectively apply a lower U.S. tax rate to intangible income derived from serving non-U.S. markets and research and development credits. In the third quarter of 2018, $412 of additional tax benefits were recorded related to the settlement of the 2013-2014 federal tax audit. The 2017 tax rates reflect the 35% statutory tax rate reduced by tax benefits for research and development credits and U.S. manufacturing activity. In 2017, in accordance with U.S. Securities and Exchange Commission Staff Accounting Bulletin No. 118, we recorded provisional amounts related to the TCJA, including the remeasurement of our U.S. net deferred tax liabilities and ancillary state tax effects, as well as the repatriation tax. We continue to refine our computation of the repatriation tax and evaluate regulatory guidance, which may result in changes to our tax estimates. Federal income tax audits have been settled for all years prior to 2015. The Internal Revenue Service (IRS) is expected to begin the 2015-2017 federal tax audit in the first quarter of 2019. We are also subject to examination in major state and international jurisdictions for the 2001-2016 tax years. We believe appropriate provisions for all outstanding tax issues have been made for all jurisdictions and all open years. Audit outcomes and the timing of audit settlements are subject to significant uncertainty. It is reasonably possible that within the next 12 months unrecognized tax benefits related to state matters under audit may decrease by up to $445

Inventories

Inventories	9 Months Ended
	Sep. 30, 2018
Inventory Disclosure [Abstract]
Inventories	Inventories Inventories consisted of the following: September 30 December 31 Long-term contracts in progress $1,908 $1,854 Commercial aircraft programs 53,568 52,861 Commercial spare parts, used aircraft, general stock materials and other 6,562 6,673 Total $62,038 $61,388 Long-Term Contracts in Progress 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 $227 and $284 at September 30, 2018 and December 31, 2017 . See indemnifications to ULA in Note 11 . Included in inventories are capitalized precontract costs of $663 at September 30, 2018 primarily related to the KC-46A Tanker and $933 at December 31, 2017 primarily related to the KC-46A Tanker, C-17 and F/A-18. See Note 10 . Commercial Aircraft Programs At September 30, 2018 and December 31, 2017 , commercial aircraft programs inventory included the following amounts related to the 787 program: $28,905 and $30,695 of work in process (including deferred production costs of $23,584 and $25,358 ), $2,485 and $3,189 of supplier advances, and $2,774 and $3,173 of unamortized tooling and other non-recurring costs. At September 30, 2018 , $19,786 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 $6,572 is expected to be recovered from units included in the program accounting quantity that represent expected future orders. At September 30, 2018 and December 31, 2017 , commercial aircraft programs inventory included $125 and $151 of unamortized tooling costs related to the 747 program. At September 30, 2018 , $119 of unamortized tooling costs are expected to be recovered from units included in the program accounting quantity that have firm orders or commitments. At September 30, 2018 , the program accounting quantity includes one already completed aircraft which is being remarketed. Commercial aircraft programs inventory included amounts credited in cash or other consideration (early issue sales consideration) to airline customers totaling $2,896 and $2,976 at September 30, 2018 and December 31, 2017

Contracts with Customers (Notes

Contracts with Customers (Notes)	9 Months Ended
	Sep. 30, 2018
Revenue from Contract with Customer [Abstract]
Long-term Contracts or Programs Disclosure [Text Block]	Contracts with Customers Unbilled receivables increased from $8,194 at December 31, 2017 to $9,936 at September 30, 2018 , primarily driven by revenue recognized at BDS and BCA in excess of billings . Advances and progress billings increased from $48,042 at December 31, 2017 to $51,496 at September 30, 2018 , primarily driven by advances on orders received in excess of revenue recognized at BCA. In the nine and three months ended September 30, 2018 , we recognized revenue of $19,006 and $6,249 related to our Advances and progress billings at January 1, 2018 . In the nine and three months ended September 30, 2017 , we recognized revenue of $17,696 and $6,009 related to our Advances and progress billings at January 1, 2017

Customer Financing

Customer Financing	9 Months Ended
	Sep. 30, 2018
Customer Financing [Abstract]
Customer Financing	Customer Financing Customer financing primarily relates to the Boeing Capital ( BCC ) segment. Prior period amounts have been adjusted to conform with the current year presentation as a result of the adoption of Topic 606. Customer financing consisted of the following: September 30 December 31 Financing receivables: Investment in sales-type/finance leases $1,153 $1,364 Notes 987 1,022 Total financing receivables 2,140 2,386 Operating lease equipment, at cost, less accumulated depreciation of $204 and $305 1,085 691 Gross customer financing 3,225 3,077 Less allowance for losses on receivables (9 ) (12 ) Total $3,216 $3,065 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 September 30, 2018 and December 31, 2017 , we individually evaluated for impairment customer financing receivables of $411 and $422 , of which $400 and $411 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. The adequacy of the allowance for losses is assessed quarterly. Three primary factors influencing the level of our allowance for losses on customer financing receivables are customer credit ratings, default rates and collateral values. 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 financing receivable balances by internal credit rating category are shown below: Rating categories September 30 December 31 BBB $1,001 $1,170 BB 443 627 B 286 177 CCC 410 412 Total carrying value of financing receivables $2,140 $2,386 At September 30, 2018 , our allowance related to receivables with ratings of B, BB and BBB. We applied default rates that averaged 23.9% , 6.7% and 0.7% , 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. 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: September 30 December 31 717 Aircraft ($226 and $269 accounted for as operating leases) $963 $1,081 747-8 Aircraft ($134 and $138 accounted for as operating leases) 478 483 737 Aircraft ($267 and $127 accounted for as operating leases) 330 161 MD-80 Aircraft (accounted for as sales-type finance leases) 207 231 757 Aircraft ($25 and $27 accounted for as operating leases) 204 217 747-400 Aircraft ($56 and $88 accounted for as operating leases) 131 170 787 Aircraft (accounted for as notes) 115 777 Aircraft ($72 and $0 accounted for as operating leases) 83 14 767 Aircraft ($0 and $25 accounted for as operating leases) 98

Investments

Investments	9 Months Ended
	Sep. 30, 2018
Investments [Abstract]
Investments	Investments Our investments, which are recorded in Short-term and other investments or Investments, consisted of the following: September 30 December 31 Equity method investments (1) $1,149 $1,214 Time deposits 1,343 613 Available for sale debt instruments 480 490 Restricted cash & cash equivalents (2) 128 74 Equity and other investments 46 48 Total $3,146 $2,439 (1) Dividends received were $222 and $79 for the nine and three months ended September 30, 2018 and $195 and $47 during the same periods in the prior year. (2)

Other Assets

Other Assets	9 Months Ended
	Sep. 30, 2018
Other Assets [Abstract]
Other Assets	Other Assets Sea Launch At September 30, 2018 and December 31, 2017 , Other assets included $295 and $356 of receivables related to our former investment in the Sea Launch venture which became payable by certain Sea Launch partners following Sea Launch’s bankruptcy filing in June 2009. At September 30, 2018 , the net amounts owed to Boeing by each of the partners were as follows: S.P. Koroley Rocket and Space Corporation Energia of Russia (RSC Energia) – $162 , PO Yuzhnoye Mashinostroitelny Zavod of Ukraine – $89 and KB Yuzhnoye of Ukraine – $44 .

Commitments And Contingencies

Commitments And Contingencies	9 Months Ended
	Sep. 30, 2018
Commitments and Contingencies Disclosure [Abstract]
Commitments And Contingencies	Commitments and Contingencies Environmental The following table summarizes environmental remediation activity during the nine months ended September 30, 2018 and 2017 . 2018 2017 Beginning balance – January 1 $524 $562 Reductions for payments made (17 ) (25 ) Changes in estimates 61 6 Ending balance – September 30 $568 $543 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 becau se 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 September 30, 2018 and December 31, 2017 , the high end of the estimated range of reasonably possible remediation costs exceeded our recorded liabilities by $800 and $868 . Product Warranties The following table summarizes product warranty activity recorded during the nine months ended September 30, 2018 and 2017 . 2018 2017 Beginning balance – January 1 $1,211 $1,414 Additions for current year deliveries 176 183 Reductions for payments made (135 ) (193 ) Changes in estimates (151 ) (213 ) Ending balance – September 30 $1,101 $1,191 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 September 30, 2018 have expiration dates from 2018 through 2028 . At September 30, 2018 , and December 31, 2017 total contractual trade-in commitments were $1,726 and $1,462 . As of September 30, 2018 and December 31, 2017 , we estimated that it was probable we would be obligated to perform on certain of these commitments with net amounts payable to customers totaling $371 and $155 and the fair value of the related trade-in aircraft was $361 and $155 . Financing Commitments Financing commitments related to aircraft on order, including options and those proposed in sales campaigns, and refinancing of delivered aircraft, totaled $19,744 and $10,221 as of September 30, 2018 and December 31, 2017 . The estimated earliest potential funding dates for these commitments as of September 30, 2018 are as follows: Total October through December 2018 $326 2019 2,736 2020 3,559 2021 2,796 2022 1,567 Thereafter 8,760 $19,744 As of September 30, 2018 , $18,540 of these financing commitments related 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. 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 $3,762 and $3,708 as of September 30, 2018 and December 31, 2017 . Commitments to ULA We and Lockheed Martin Corporation have each committed to provide ULA with additional capital contributions in the event ULA does not have sufficient funds to make a required payment to us under an inventory supply agreement. As of September 30, 2018 , ULA’s total remaining obligation to Boeing under the inventory supply agreement was $120 . See Note 5 . United States Government Defense Environment Overview The Bipartisan Budget Act of 2018, passed in February 2018, raised the 2011 Budget Control Act spending caps for fiscal years 2018 and 2019 (FY18 and FY19). The consolidated spending bills signed into law in September 2018 provide defense funding for FY19, in compliance with the revised caps. These bills also provided FY19 appropriations for most of the federal government. The remaining parts of the federal government, including the National Aeronautics and Space Administration (NASA), were funded with a Continuing Resolution that maintains current funding levels through December 7, 2018. If Congress is unable to pass appropriations bills to fund these agencies for the remainder of FY19 before the expiration of the current Continuing Resolution, a partial government shutdown could result, which could impact the Company’s operations. There continues to be uncertainty with respect to future program-level appropriations for the U.S. DoD and other government agencies, including NASA. The 2011 Budget Control Act continues to mandate limits on U.S. government discretionary spending for fiscal years 2020 and 2021 (FY20 and FY21). The lower budget caps will take effect again in FY20 and FY21 unless Congress acts to raise the spending caps or to repeal or suspend the law. As a result, continued budget uncertainty and the risk of future sequestration cuts remain. Future budget cuts or investment priority changes could result in reductions, cancellations and/or delays of existing contracts or programs. Any of these impacts could have a material effect on the results of the Company’s operations, financial position and/or cash flows. 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, Saudi F-15, USAF KC-46A Tanker, T-X Trainer, VC-25B Presidential Aircraft, MQ-25 unmanned aerial refueling aircraft, 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 reach-forward losses on the KC-46A Tanker in 2018 as well as in prior years, and we continue to have risk for further losses if we experience further production, technical or quality issues, and delays in flight testing, certification and/or delivery. In addition, in the third quarter of 2018, in connection with winning the T-X and MQ-25 competitions, we recorded a loss of $400 associated with options for 346 T-X Trainer aircraft and a loss of $291 related to the MQ-25 Engineering, Manufacturing and Development (EMD) contract. Moreover, our fixed-price development programs remain subject to additional reach-forward losses if we experience further 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 EMD contract is a fixed-price incentive fee contract valued at $4.9 billion and involves highly complex designs and systems integration. In 2016, the USAF authorized two low rate initial production (LRIP) lots for 7 and 12 aircraft valued at $2.8 billion . In January 2017, the USAF authorized an additional LRIP lot for 15 aircraft valued at $2.1 billion . On September 10, 2018, the USAF authorized an additional 18 aircraft valued at $2.9 billion . At September 30, 2018 , we had approximately $368 of capitalized precontract costs and $1,341 of potential termination liabilities to suppliers. Recoverable Costs on Government Contracts

Arrangements With Off-Balance S

Arrangements With Off-Balance Sheet Risk	9 Months Ended
	Sep. 30, 2018
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 Potential Payments Estimated Proceeds from Collateral/Recourse Carrying Amount of Liabilities September 30 December 31 September 30 December 31 September 30 December 31 Contingent repurchase commitments $1,729 $1,605 $1,729 $1,605 $9 Indemnifications to ULA: Contributed Delta program launch inventory 52 72 Contract pricing 261 261 $7 7 Other Delta contracts 176 191 Credit guarantees 106 109 51 55 16 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 In 2006, we agreed to indemnify ULA through December 31, 2020 against potential non-recoverability and non-allowability of $1,360 of Boeing Delta launch program inventory included in contributed assets plus $1,860 of inventory subject to an inventory supply agreement which ends on March 31, 2021. ULA has yet to consume $327 of inventory associated with sold missions. We agreed to indemnify ULA against potential losses that ULA may incur in the event ULA is unable to obtain certain additional contract pricing from the USAF for certain satellite missions. In 2009, ULA, through its subsidiary United Launch Services, filed a claim and notice of appeal before the Armed Services Board of Contract Appeals (ASBCA) for a contract adjustment for the price of these missions. In 2016, the ASBCA ruled that ULA is entitled to additional contract pricing for these missions and remanded to the parties to negotiate appropriate pricing. If ULA is ultimately unsuccessful in obtaining additional pricing, we may be responsible for an indemnification payment up to $261 and may record up to $280 in pre-tax losses associated with these missions. Potential payments for Other Delta contracts include $85 related to deferred support costs and $91 related to deferred production costs. In June 2011, the Defense Contract Management Agency (DCMA) notified ULA that it had determined that $271 of deferred support costs are not recoverable under government contracts. In December 2011, the DCMA notified ULA of the potential non-recoverability of an additional $114 of deferred production costs. ULA and Boeing believe that all costs are recoverable and in November 2011, ULA filed a certified claim with the USAF for collection of deferred support and production costs. The USAF issued a final decision denying ULA ’s certified claim in May 2012. In 2012, Boeing and ULA, through its subsidiary United Launch Services, filed a suit in the Court of Federal Claims seeking recovery of the deferred support and production costs from the U.S. government, which subsequently asserted a counterclaim for credits that it alleges were offset by deferred support cost invoices. We believe that the U.S. government’s counterclaim is without merit. The discovery phase of the litigation completed in 2017. Boeing filed a motion for summary judgment for full recovery of its costs on November 17, 2017, asking the court to award full recovery without a trial. The court denied Boeing’s motion on August 29, 2018, holding that a trial is necessary. Boeing has asked the court to allow an immediate appeal of its decision before trial to the U.S. Court of Appeals for the Federal Circuit. If, contrary to our belief, it is determined that some or all of the deferred support or production costs are not recoverable, we could be required to record pre-tax losses and make indemnification payments to ULA for up to $317 of the costs questioned by the DCMA. 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 10 . 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 . Strategic Partnership with Embraer On July 5, 2018, we and Embraer S.A. (Embraer) announced the signing of a Memorandum of Understanding to establish a strategic partnership between the two companies. The non-binding agreement proposes the formation of a joint venture comprising the commercial aircraft and services business of Embraer, which joint venture would be owned 80 percent by us. The transaction values 100 percent of Embraer’s commercial aircraft operations at $4.75 billion and contemplates a value of $3.8 billion for our 80 percent ownership stake in the joint venture. We expect to work with Embraer to finalize the financial and operational details of the strategic partnership and negotiate definitive transaction agreements in the coming months. Once definitive transaction agreements have been executed, the transaction would then be subject to shareholder and regulatory approvals, including approval from the Government of Brazil, as well as other customary closing conditions. Assuming approvals are received in a timely manner, we expect that the transaction will close by the end of 2019

Debt

Debt	9 Months Ended
	Sep. 30, 2018
Debt Disclosure [Abstract]
Debt Disclosure [Text Block]	On February 23, 2018 , we issued $1,400 of fixed rate senior notes consisting of $350 due March 1, 2023 that bear an annual interest rate of 2.8% , $350 due March 1, 2028 that bear an annual interest rate of 3.25% , $350 due March 1, 2038 that bear an annual interest rate of 3.55% , and $350 due March 1, 2048 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 $1,338

Postretirement Plans

Postretirement Plans	9 Months Ended
	Sep. 30, 2018
Retirement Benefits [Abstract]
Postretirement Plans	Postretirement Plans The components of net periodic benefit cost were as follows: Nine months ended September 30 Three months ended September 30 Pension Plans 2018 2017 2018 2017 Service cost $322 $301 $107 $100 Interest cost 2,086 2,243 696 747 Expected return on plan assets (3,007 ) (2,883 ) (1,002 ) (961 ) Amortization of prior service credits (42 ) (29 ) (14 ) (9 ) Recognized net actuarial loss 847 603 282 201 Settlement/curtailment/other losses 43 1 Net periodic benefit cost $249 $236 $69 $78 Net periodic benefit cost included in Earnings from operations $237 $376 $79 $123 Net periodic benefit cost included in Other income/(loss), net (98 ) (88 ) (50 ) (26 ) Net periodic benefit cost included in Earnings before income taxes $139 $288 $29 $97 Nine months ended September 30 Three months ended September 30 Other Postretirement Plans 2018 2017 2018 2017 Service cost $71 $80 $24 $27 Interest cost 145 171 48 57 Expected return on plan assets (6 ) (5 ) (2 ) (1 ) Amortization of prior service credits (94 ) (102 ) (31 ) (34 ) Recognized net actuarial (gain)/loss (8 ) 8 (3 ) 2 Net periodic benefit cost $108 $152 $36 $51 Net periodic benefit cost included in Earnings from operations $63 $78 $21 $25 Net periodic benefit cost included in Other income/(loss), net 77 91 29 31 Net periodic benefit cost included in Earnings before income taxes $140 $169 $50 $56

Share-Based Compensation And Ot

Share-Based Compensation And Other Compensation Arrangements	9 Months Ended
	Sep. 30, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Share-Based Compensation And Other Compensation Arrangements	Share-Based Compensation and Other Compensation Arrangements Restricted Stock Units On February 26, 2018 , we granted to our executives 260,730 restricted stock units ( RSU s) as part of our long-term incentive program with a grant date fair value of $361.13 per unit. The RSU s 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. Performance-Based Restricted Stock Units On February 26, 2018 , we granted to our executives 241,284 performance-based restricted stock units ( PBRSU s) as part of our long-term incentive program with a grant date fair value of $390.27 per unit. Compensation expense for the award is recognized over the three -year performance period based upon the grant date fair value estimated using a Monte-Carlo simulation model. The model used the following assumptions: expected volatility of 22.11% based upon historical stock volatility, a risk-free interest rate of 2.36% , and no expected dividend yield because the units earn dividend equivalents. Performance Awards On February 26, 2018 , we granted to our executives performance awards as part of our long-term incentive program with a payout based on the achievement of financial goals for the three -year period ending December 31, 2020 . At September 30, 2018 , the minimum payout amount is $0 and the maximum amount we could be required to pay out is $370

Shareholders' Equity

Shareholders' Equity	9 Months Ended
	Sep. 30, 2018
Equity [Abstract]
Shareholders' Equity	Shareholders' Equity Accumulated Other Comprehensive Loss Changes in Accumulated other comprehensive loss (AOCI) by component for the nine and three months ended September 30, 2018 and 2017 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, 2017 ($143 ) ($2 ) ($127 ) ($13,351 ) ($13,623 ) Other comprehensive income before reclassifications 121 111 1 233 Amounts reclassified from AOCI 44 310 (2) 354 Net current period Other comprehensive income 121 155 311 587 Balance at September 30, 2017 ($22 ) ($2 ) $28 ($13,040 ) ($13,036 ) Balance at January 1, 2018 ($15 ) ($2 ) $54 ($16,410 ) ($16,373 ) Other comprehensive (loss)/income before reclassifications (55 ) 3 (97 ) (3 ) (152 ) Amounts reclassified from AOCI 19 557 (2) 576 Net current period Other comprehensive (loss)/income (55 ) 3 (78 ) 554 424 Balance at September 30, 2018 ($70 ) $1 ($24 ) ($15,856 ) ($15,949 ) Balance at June 30, 2017 ($66 ) ($2 ) ($22 ) ($13,144 ) ($13,234 ) Other comprehensive income before reclassifications 44 40 84 Amounts reclassified from AOCI 10 104 (2) 114 Net current period Other comprehensive income 44 50 104 198 Balance at September 30, 2017 ($22 ) ($2 ) $28 ($13,040 ) ($13,036 ) Balance at June 30, 2018 ($72 ) $1 ($29 ) ($16,039 ) ($16,139 ) Other comprehensive (loss)/income before reclassifications 2 (4 ) (1 ) (3 ) Amounts reclassified from AOCI 9 184 (2) 193 Net current period Other comprehensive income 2 5 183 190 Balance at September 30, 2018 ($70 ) $1 ($24 ) ($15,856 ) ($15,949 ) (1) Net of tax. (2) Primarily relates to amortization of actuarial losses for the nine and three months ended September 30, 2017 totaling $394 and $131 (net of tax of ($217) and ($72) ) and for the nine and three months ended September 30, 2018 totaling $657 and $219 (net of tax of ($182) and ($60)

Derivative Financial Instrument

Derivative Financial Instruments	9 Months Ended
	Sep. 30, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments	Derivative Financial Instruments Cash Flow Hedges Our cash flow hedges include foreign currency forward contracts and commodity purchase contracts. We use foreign currency forward contracts to manage currency risk associated with certain transactions, specifically forecasted sales and purchases made in foreign currencies. Our foreign currency contracts hedge forecasted transactions through 2024 . We use commodity derivatives, such as fixed-price purchase commitments to hedge against potentially unfavorable price changes for items used in production. Our commodity contracts hedge forecasted transactions through 2021 . Fair Value Hedges Interest rate swaps under which we agree to pay variable rates of interest are designated as fair value hedges of fixed-rate debt. The net change in fair value of the derivatives and the hedged items is reported in Boeing Capital interest expense. Derivative Instruments Not Receiving Hedge Accounting Treatment We have entered into agreements to purchase and sell aluminum to address long-term strategic sourcing objectives and non-U.S. business requirements. These agreements are derivative instruments for accounting purposes. The quantities of aluminum in these agreements offset and are priced at prevailing market prices. We also hold certain foreign currency forward contracts which do not qualify for hedge accounting treatment. Notional Amounts and Fair Values The notional amounts and fair values of derivative instruments in the Condensed Consolidated Statements of Financial Position were as follows: Notional amounts (1) Other assets Accrued liabilities September 30 December 31 September 30 December 31 September 30 December 31 Derivatives designated as hedging instruments: Foreign exchange contracts $2,781 $2,930 $48 $131 ($73 ) ($63 ) Interest rate contracts 125 125 1 3 Commodity contracts 40 56 5 4 (4 ) (6 ) Derivatives not receiving hedge accounting treatment: Foreign exchange contracts 591 406 8 16 (11 ) (5 ) Commodity contracts 614 563 Total derivatives $4,151 $4,080 $62 $154 ($88 ) ($74 ) Netting arrangements (30 ) (61 ) 30 61 Net recorded balance $32 $93 ($58 ) ($13 ) (1) Notional amounts represent the gross contract/notional amount of the derivatives outstanding. Gains/(losses) associated with our cash flow and undesignated hedging transactions and their effect on Other comprehensive income/(loss) and Net earnings were as follows: Nine months ended September 30 Three months ended September 30 2018 2017 2018 2017 Effective portion recognized in Other comprehensive income, net of taxes: Foreign exchange contracts ($100 ) $116 ($7 ) $40 Commodity contracts 3 (5 ) 3 Effective portion reclassified out of Accumulated other comprehensive loss into earnings, net of taxes: Foreign exchange contracts (20 ) (43 ) (11 ) (11 ) Commodity contracts 1 (1 ) 2 1 Forward points recognized in Other income, net: Foreign exchange contracts 5 3 1 Undesignated derivatives recognized in Other income, net: Foreign exchange contracts (2 ) 6 (1 ) 1 Based on our portfolio of cash flow hedges, we expect to reclassify losses of $16 (pre-tax) out of Accumulated other comprehensive loss into earnings during the next 12 months. Ineffectiveness related to our hedges recognized in Other income was insignificant for the nine months ended September 30, 2018 and 2017 . We have derivative instruments with credit-risk-related contingent features. For foreign exchange contracts with original maturities of at least five years, our derivative counterparties could require settlement if we default on our five-year credit facility. For certain commodity contracts, our counterparties could require collateral posted in an amount determined by our credit ratings. The fair value of foreign exchange and commodity contracts that have credit-risk-related contingent features that are in a net liability position at September 30, 2018 was $17 . At September 30, 2018

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2018
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. September 30, 2018 December 31, 2017 Total Level 1 Level 2 Total Level 1 Level 2 Assets Money market funds $2,263 $2,263 $1,582 $1,582 Available-for-sale debt investments: Commercial paper 97 $97 70 $70 Corporate notes 384 384 382 382 U.S. government agencies 18 18 47 47 Other equity investments 14 14 18 18 Derivatives 32 32 93 93 Total assets $2,808 $2,277 $531 $2,192 $1,600 $592 Liabilities Derivatives ($58 ) ($58 ) ($13 ) ($13 ) Total liabilities ($58 ) ($58 ) ($13 ) ($13 ) 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, commodity and interest rate 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. The fair value of our interest rate swaps is derived from a discounted cash flow analysis based on the terms of the contract and the interest rate curve. 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 nine months ended September 30 due to long-lived asset impairment and the fair value and asset classification of the related assets as of the impairment date: 2018 2017 Fair Value Total Losses Fair Value Total Losses Operating lease equipment $45 ($16 ) $89 ($31 ) Investments (47 ) 1 (30 ) Property, plant and equipment 8 (2 ) Acquired intangible assets 14 (1 ) Total $45 ($63 ) $112 ($64 ) Investments and Property, plant and equipment were primarily valued using an income approach based on the discounted cash flows associated with the underlying assets. The fair value of the impaired operating lease equipment 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 nine months ended September 30, 2018 , 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 Value Valuation Technique(s) Unobservable Input Range Median or Average Operating lease equipment $45 Market approach Aircraft value publications $41 - $63 (1) Median $46 Aircraft condition adjustments ($4) - $3 (2) Net ($1) (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 Condensed Consolidated Statements of Financial Position were as follows: September 30, 2018 Carrying Amount Total Fair Value Level 1 Level 2 Level 3 Assets Notes receivable, net $987 $1,006 $1,006 Liabilities Debt, excluding capital lease obligations and commercial paper (11,131 ) (12,066 ) (11,974 ) ($92 ) December 31, 2017 Carrying Amount Total Fair Value Level 1 Level 2 Level 3 Assets Notes receivable, net $1,022 $1,046 $1,046 Liabilities Debt, excluding capital lease obligations and commercial paper (10,380 ) (11,923 ) (11,823 ) ($100 ) 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, Accounts payable and long-term payables. The carrying values of those items, as reflected in the Condensed Consolidated Statements of Financial Position, approximate their fair value at September 30, 2018 and December 31, 2017

Legal Proceedings

Legal Proceedings	9 Months Ended
	Sep. 30, 2018
Legal Proceedings [Abstract]
Legal Proceedings	Legal Proceedings Various legal proceedings, claims and investigations related to products, contracts, employment and other matters are pending against us.

Segment and Revenue Information

Segment and Revenue Information	9 Months Ended
	Sep. 30, 2018
Segment Reporting [Abstract]
Segment and Revenue Information	Segment and Revenue Information Our primary profitability measurements to review a segment’s operating results are Earnings 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 6 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. Revenue on certain military derivative aircraft contracts is recognized over time as costs are incurred. BDS is engaged 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. 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 Boeing customers. 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 consist of the following: (Dollars in millions) Nine months ended September 30 Three months ended September 30 2018 2017 2018 2017 Revenue from contracts with customers: Europe $7,189 $6,519 $1,882 $1,754 China 9,433 7,510 4,677 4,016 Asia, other than China 5,966 4,981 1,886 1,898 Middle East 3,931 7,157 1,598 2,577 Other 3,598 2,773 1,098 601 Total non-U.S. revenues 30,117 28,940 11,141 10,846 United States 12,170 12,120 3,821 3,872 Total revenues from contracts with customers 42,287 41,060 14,962 14,718 Intersegment revenues, eliminated on consolidation 1,122 1,566 314 675 Total segment revenues $43,409 $42,626 $15,276 $15,393 Revenue recognized on fixed price contracts 100 % 100 % 100 % 100 % Revenue recognized at a point in time 94 % 94 % 91 % 95 % BDS revenues on contracts with customers, based on the customer's location, consist of the following: (Dollars in millions) Nine months ended September 30 Three months ended September 30 2018 2017 2018 2017 Revenue from contracts with customers: U.S. customers $12,201 $11,924 $4,178 $3,917 Non U.S. customers (1) 4,883 3,380 1,551 1,133 Total segment revenue from contracts with customers $17,084 $15,304 $5,729 $5,050 Revenue recognized over time 98 % 98 % 97 % 98 % Revenue recognized on fixed-price contracts 65 % 64 % 64 % 63 % Revenue from the U.S. government (1) 86 % 88 % 85 % 85 % (1) Includes revenues earned from foreign military sales through the U.S. government. BGS revenues consist of the following: (Dollars in millions) Nine months ended September 30 Three months ended September 30 2018 2017 2018 2017 Revenue from contracts with customers: Commercial $7,276 $5,682 $2,431 $1,950 Government 4,703 5,064 1,608 1,617 Total revenues from contracts with customers 11,979 10,746 4,039 3,567 Intersegment revenues eliminated on consolidation 145 38 52 12 Total segment revenues $12,124 $10,784 $4,091 $3,579 Revenue recognized at a point in time 52 % 48 % 51 % 48 % Revenue recognized on fixed-price contracts 88 % 89 % 85 % 89 % Revenue from the U.S. government (1) 32 % 40 % 32 % 38 % (1) Includes revenues earned from foreign military sales through the U.S. government. 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 September 30, 2018 was $491,179 . We expect approximately 24% to be converted to revenue through 2019 and approximately 69% through 2022 , with the remainder thereafter. 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. 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. Nine months ended September 30 Three months ended September 30 2018 2017 2018 2017 Share-based plans ($60 ) ($67 ) ($24 ) ($21 ) Deferred compensation (112 ) (174 ) (56 ) (78 ) Amortization of previously capitalized interest (67 ) (68 ) (19 ) (22 ) Eliminations and other unallocated items (929 ) (462 ) (359 ) (112 ) Unallocated items, eliminations and other ($1,168 ) ($771 ) ($458 ) ($233 ) Pension FAS/CAS service cost adjustment $780 $811 $260 $271 Postretirement FAS/CAS service cost adjustment 239 238 77 75 FAS/CAS service cost adjustment $1,019 $1,049 $337 $346 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 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: September 30 December 31 Commercial Airplanes $65,509 $64,647 Defense, Space & Security 18,688 18,476 Global Services 12,843 12,491 Boeing Capital 3,120 3,156 Unallocated items, eliminations and other 14,499 13,592 Total $114,659 $112,362

Subsequent Events Subsequent Ev

Subsequent Events Subsequent Events	9 Months Ended
	Sep. 30, 2018
Subsequent Event [Line Items]
Subsequent Events [Text Block]	Subsequent Events Acquisition agreement On October 9, 2018, we acquired KLX Inc. (KLX), a provider of aviation parts and services, for $4,316 , which includes the assumption of $1,029

Basis Of Presentation (Policy)

Basis Of Presentation (Policy)	9 Months Ended
	Sep. 30, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Earnings Per Share, Policy [Policy Text Block]	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.
Backlog [Policy Text Block]	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.

Customer Financing Customer Fin

Customer Financing Customer Financing (Policies)	9 Months Ended
	Sep. 30, 2018
Customer Financing [Abstract]
Impaired Financing Receivable, Policy [Policy Text Block]	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.
Financing Receivable, Allowance for Credit Losses, Policy for Uncollectible Amounts [Policy Text Block]	The adequacy of the allowance for losses is assessed quarterly. Three primary factors influencing the level of our allowance for losses on customer financing receivables are customer credit ratings, default rates and collateral values. 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.

Commitments And Contingencies C

Commitments And Contingencies Commitments and Contingencies (Policies)	9 Months Ended
	Sep. 30, 2018
Commitments and Contingencies Disclosure [Abstract]
Environmental	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.
Commitments and Contingencies, Policy [Policy Text Block]	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.

Summary Of Business Segment D_2

Summary Of Business Segment Data Summary of Business Segment Data (Tables)	9 Months Ended
	Sep. 30, 2018
Segment Reporting, Disclosure of Entity's Reportable Segments [Abstract]
Schedule of Segment Reporting Information, by Segment [Table Text Block]	(Dollars in millions) Nine months ended September 30 Three months ended September 30 2018 2017 2018 2017 Revenues: Commercial Airplanes $43,409 $42,626 $15,276 $15,393 Defense, Space & Security 17,084 15,304 5,729 5,050 Global Services 12,124 10,784 4,091 3,579 Boeing Capital 214 234 77 70 Unallocated items, eliminations and other (45 ) 287 (27 ) 131 Total revenues $72,786 $69,235 $25,146 $24,223 Earnings/(loss) from operations: Commercial Airplanes $5,175 $3,665 $2,023 $1,513 Defense, Space & Security 925 1,649 (245 ) 486 Global Services 1,790 1,687 543 495 Boeing Capital 71 87 27 23 Segment operating profit 7,961 7,088 2,348 2,517 Unallocated items, eliminations and other (1,168 ) (771 ) (458 ) (233 ) FAS/CAS service cost adjustment 1,019 1,049 337 346 Earnings from operations 7,812 7,366 2,227 2,630 Other income, net 63 91 12 40 Interest and debt expense (317 ) (267 ) (106 ) (87 ) Earnings before income taxes 7,558 7,190 2,133 2,583 Income tax (expense)/benefit (522 ) (2,052 ) 230 (773 ) Net earnings $7,036 $5,138 $2,363 $1,810

Basis Of Presentation Basis of

Basis Of Presentation Basis of Presentation (Tables)	9 Months Ended
	Sep. 30, 2018
Net cumulative catch-up adjustments [Abstract]
Schedule of Change in Accounting Estimate [Table Text Block]	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.

Impact of Adoption of New Sta_2

Impact of Adoption of New Standards Impact of Adoption of New Standards (Tables)	9 Months Ended
	Sep. 30, 2018
Accounting Changes and Error Corrections [Abstract]
Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Table Text Block]	Impact of Adoption of New Standards In the first quarter of 2018, we adopted the following ASUs: ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606); ASU No. 2017-07, Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost; ASU 2016-18 Statement of Cash Flows (Topic 230) Restricted Cash; and ASU 2018-02 Income Statement—Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. The impact to our unaudited Condensed Consolidated Financial Statements as a result of adopting these standards was as follows: Condensed Consolidated Statement of Operations (Unaudited) Nine months ended September 30, 2017 Three months ended September 30, 2017 (Dollars in millions) Reported Impact of New Standards Restated Reported Impact of New Standards Restated Sales of products $60,484 $1,183 $61,667 $21,825 ($43 ) $21,782 Sales of services 7,540 28 7,568 2,484 (43 ) 2,441 Total revenues 68,024 1,211 69,235 24,309 (86 ) 24,223 Cost of products (49,856 ) (1,080 ) (50,936 ) (18,050 ) (18,050 ) Cost of services (5,730 ) (12 ) (5,742 ) (1,910 ) 31 (1,879 ) Boeing Capital interest expense (53 ) (53 ) (27 ) (27 ) Total costs and expenses (55,639 ) (1,092 ) (56,731 ) (19,987 ) 31 (19,956 ) 12,385 119 12,504 4,322 (55 ) 4,267 Income from operating investments, net 169 169 49 49 General and administrative expense (2,888 ) (2 ) (2,890 ) (915 ) (3 ) (918 ) Research and development expense, net (2,418 ) 1 (2,417 ) (767 ) (1 ) (768 ) Earnings from operations 7,248 118 7,366 2,689 (59 ) 2,630 Other income, net 94 (3 ) 91 45 (5 ) 40 Interest and debt expense (267 ) (267 ) (87 ) (87 ) Earnings before income taxes 7,075 115 7,190 2,647 (64 ) 2,583 Income tax expense (2,010 ) (42 ) (2,052 ) (794 ) 21 (773 ) Net earnings $5,065 $73 $5,138 $1,853 ($43 ) $1,810 Basic earnings per share $8.37 $0.12 $8.49 $3.10 ($0.07 ) $3.03 Diluted earnings per share $8.27 $0.12 $8.39 $3.06 ($0.07 ) $2.99 Condensed Consolidated Statement of Financial Position (Dollars in millions) December 31, 2017 Assets Reported Impact of New Standards Restated Cash and cash equivalents $8,813 $8,813 Short-term and other investments 1,179 1,179 Accounts receivable, net 10,516 ($7,622 ) 2,894 Unbilled receivables, net 8,194 8,194 Current portion of customer financing, net 309 309 Inventories 44,344 17,044 61,388 Other current assets 2,417 2,417 Total current assets 65,161 20,033 85,194 Customer financing, net 2,740 16 2,756 Property, plant and equipment, net 12,672 12,672 Goodwill 5,559 5,559 Acquired intangible assets, net 2,573 2,573 Deferred income taxes 341 (20 ) 321 Investments 1,260 1,260 Other assets, net of accumulated amortization 2,027 2,027 Total assets $92,333 $20,029 $112,362 Liabilities and equity Accounts payable $12,202 $12,202 Accrued liabilities 15,292 ($2,223 ) 13,069 Advances and billings in excess of related costs 27,440 (27,440 ) Advances and progress billings 48,042 48,042 Short-term debt and current portion of long-term debt 1,335 1,335 Total current liabilities 56,269 18,379 74,648 Deferred income taxes 1,839 349 2,188 Accrued retiree health care 5,545 5,545 Accrued pension plan liability, net 16,471 16,471 Other long-term liabilities 2,015 2,015 Long-term debt 9,782 9,782 Shareholders’ equity: Common stock 5,061 5,061 Additional paid-in capital 6,804 6,804 Treasury stock, at cost (43,454 ) (43,454 ) Retained earnings 45,320 4,298 49,618 Accumulated other comprehensive loss (13,376 ) (2,997 ) (16,373 ) Total shareholders’ equity 355 1,301 1,656 Noncontrolling interests 57 57 Total equity 412 1,301 1,713 Total liabilities and equity $92,333 $20,029 $112,362 Condensed Consolidated Statement of Cash Flows (Unaudited) (Dollars in millions) Nine months ended September 30, 2017 Reported Impact of New Standards Restated Cash flows - operating activities: Net earnings $5,065 $73 $5,138 Adjustments to reconcile net earnings to net cash provided by operating activities: Non-cash items - Share-based plans expense 151 151 Depreciation and amortization 1,487 (17 ) 1,470 Investment/asset impairment charges, net 75 75 Customer financing valuation expense 4 4 Other charges and credits, net 190 6 196 Changes in assets and liabilities - Accounts receivable (1,983 ) 1,425 (558 ) Unbilled receivables (1,805 ) (1,805 ) Advances and progress billings 4,714 4,714 Inventories 254 (1,054 ) (800 ) Other current assets (337 ) (337 ) Accounts payable 778 2 780 Accrued liabilities 112 (214 ) (102 ) Advances and billings in excess of related costs 2,828 (2,828 ) Income taxes receivable, payable and deferred 1,465 42 1,507 Other long-term liabilities 25 25 Pension and other postretirement plans (550 ) (550 ) Customer financing, net 635 (1 ) 634 Other (96 ) (3 ) (99 ) Net cash provided by operating activities 10,440 3 10,443 Cash flows - investing activities: Property, plant and equipment additions (1,304 ) (1,304 ) Property, plant and equipment reductions 30 30 Contributions to investments (2,847 ) 32 (2,815 ) Proceeds from investments 2,612 2,612 Purchase of distribution rights (131 ) (131 ) Other 4 3 7 Net cash used by investing activities (1,636 ) 35 (1,601 ) Cash flows - financing activities: New borrowings 876 876 Debt repayments (83 ) (83 ) Stock options exercised 291 291 Employee taxes on certain share-based payment arrangements (118 ) (118 ) Common shares repurchased (7,500 ) (7,500 ) Dividends paid (2,575 ) (2,575 ) Net cash used by financing activities (9,109 ) (9,109 ) Effect of exchange rate changes on cash & cash equivalents, including restricted 73 73 Net (decrease)/increase in cash & cash equivalents, including restricted (232 ) 38 (194 ) Cash & cash equivalents, including restricted*, at beginning of year 8,801 68 8,869 Cash & cash equivalents, including restricted*, at end of period $8,569 $106 8,675 Less restricted cash & cash equivalents, included in Investments 106 Cash and cash equivalents at end of period $8,569 * Reported balance excludes restricted amounts Condensed Consolidated Statements of Equity (Unaudited) Boeing shareholders (Dollars in millions) Common Stock Additional Paid-In Capital Treasury Stock Retained Earnings Accumulated Other Comprehensive Loss Non- controlling Interests Total Balance at January 1, 2017, as reported $5,061 $4,762 ($36,097 ) $40,714 ($13,623 ) $60 $877 Cumulative Impact of Topic 606 at 1/1/2016 901 901 Impact of Topic 606 on 2016 earnings 139 139 Balance at January 1, 2017, as restated $5,061 $4,762 ($36,097 ) $41,754 ($13,623 ) $60 $1,917 Boeing shareholders (Dollars in millions) Common Stock Additional Paid-In Capital Treasury Stock Retained Earnings Accumulated Other Comprehensive Loss Non- controlling Interests Total Balance at December 31, 2017, as reported $5,061 $6,804 ($43,454 ) $45,320 ($13,376 ) $57 $412 Cumulative Impact of Topic 606 at 1/1/2016 901 901 Impact of Topic 606 on 2016 earnings 139 139 Impact of Topic 606 on 2017 earnings 261 261 Total impact of ASC 606 through December 31, 2017 1,301 1,301 Impact of ASU 2018-02 2,997 (2,997 ) Balance at December 31, 2017, as restated $5,061 $6,804 ($43,454 ) $49,618 ($16,373 ) $57 $1,713

Earnings Per Share (Tables)

Earnings Per Share (Tables)	9 Months Ended
	Sep. 30, 2018
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) Nine months ended September 30 Three months ended September 30 2018 2017 2018 2017 Net earnings $7,036 $5,138 $2,363 $1,810 Less: earnings available to participating securities 5 4 2 2 Net earnings available to common shareholders $7,031 $5,134 $2,361 $1,808 Basic Basic weighted average shares outstanding 582.7 605.6 574.8 598.3 Less: participating securities 0.7 0.8 0.6 0.7 Basic weighted average common shares outstanding 582.0 604.8 574.2 597.6 Diluted Basic weighted average shares outstanding 582.7 605.6 574.8 598.3 Dilutive potential common shares (1) 6.2 7.2 6.0 8.0 Diluted weighted average shares outstanding 588.9 612.8 580.8 606.3 Less: participating securities 0.7 0.8 0.6 0.7 Diluted weighted average common shares outstanding 588.2 612.0 580.2 605.6 Net earnings per share: Basic $12.08 $8.49 $4.11 $3.03 Diluted 11.95 8.39 4.07 2.99 (1)
Schedule Of Weighted Average Number Of Shares Outstanding Excluded From The Computation Of Diluted Earnings Per Share	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 earnings per share because the effect was either antidilutive or the performance condition was not met. (Shares in millions) Nine months ended September 30 Three months ended September 30 2018 2017 2018 2017 Performance awards 2.6 4.6 2.2 3.4 Performance-based restricted stock units 0.3 0.6 0.2 0.1

Inventories (Tables)

Inventories (Tables)	9 Months Ended
	Sep. 30, 2018
Inventory Disclosure [Abstract]
Schedule of Inventory, Current	Inventories consisted of the following: September 30 December 31 Long-term contracts in progress $1,908 $1,854 Commercial aircraft programs 53,568 52,861 Commercial spare parts, used aircraft, general stock materials and other 6,562 6,673 Total $62,038 $61,388

Customer Financing (Tables)

Customer Financing (Tables)	9 Months Ended
	Sep. 30, 2018
Customer Financing [Abstract]
Schedule Of Customer Financing	Customer financing primarily relates to the Boeing Capital ( BCC ) segment. Prior period amounts have been adjusted to conform with the current year presentation as a result of the adoption of Topic 606. Customer financing consisted of the following: September 30 December 31 Financing receivables: Investment in sales-type/finance leases $1,153 $1,364 Notes 987 1,022 Total financing receivables 2,140 2,386 Operating lease equipment, at cost, less accumulated depreciation of $204 and $305 1,085 691 Gross customer financing 3,225 3,077 Less allowance for losses on receivables (9 ) (12 ) Total $3,216 $3,065
Financing Receivable Credit Quality Indicators	Our financing receivable balances by internal credit rating category are shown below: Rating categories September 30 December 31 BBB $1,001 $1,170 BB 443 627 B 286 177 CCC 410 412 Total carrying value of financing receivables $2,140 $2,386
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: September 30 December 31 717 Aircraft ($226 and $269 accounted for as operating leases) $963 $1,081 747-8 Aircraft ($134 and $138 accounted for as operating leases) 478 483 737 Aircraft ($267 and $127 accounted for as operating leases) 330 161 MD-80 Aircraft (accounted for as sales-type finance leases) 207 231 757 Aircraft ($25 and $27 accounted for as operating leases) 204 217 747-400 Aircraft ($56 and $88 accounted for as operating leases) 131 170 787 Aircraft (accounted for as notes) 115 777 Aircraft ($72 and $0 accounted for as operating leases) 83 14 767 Aircraft ($0 and $25 accounted for as operating leases) 98

Investments (Tables)

Investments (Tables)	9 Months Ended
	Sep. 30, 2018
Investments [Abstract]
Schedule Of Investments	Our investments, which are recorded in Short-term and other investments or Investments, consisted of the following: September 30 December 31 Equity method investments (1) $1,149 $1,214 Time deposits 1,343 613 Available for sale debt instruments 480 490 Restricted cash & cash equivalents (2) 128 74 Equity and other investments 46 48 Total $3,146 $2,439 (1) Dividends received were $222 and $79 for the nine and three months ended September 30, 2018 and $195 and $47 during the same periods in the prior year. (2)

Commitments And Contingencies (

Commitments And Contingencies (Tables)	9 Months Ended
	Sep. 30, 2018
Commitments and Contingencies Disclosure [Abstract]
Environmental	The following table summarizes environmental remediation activity during the nine months ended September 30, 2018 and 2017 . 2018 2017 Beginning balance – January 1 $524 $562 Reductions for payments made (17 ) (25 ) Changes in estimates 61 6 Ending balance – September 30 $568 $543
Product Warranties	The following table summarizes product warranty activity recorded during the nine months ended September 30, 2018 and 2017 . 2018 2017 Beginning balance – January 1 $1,211 $1,414 Additions for current year deliveries 176 183 Reductions for payments made (135 ) (193 ) Changes in estimates (151 ) (213 ) Ending balance – September 30 $1,101 $1,191
Financing Commitments	The estimated earliest potential funding dates for these commitments as of September 30, 2018 are as follows: Total October through December 2018 $326 2019 2,736 2020 3,559 2021 2,796 2022 1,567 Thereafter 8,760 $19,744

Arrangements With Off-Balance_2

Arrangements With Off-Balance Sheet Risk (Tables)	9 Months Ended
	Sep. 30, 2018
Guarantees [Abstract]
Third Party 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 Potential Payments Estimated Proceeds from Collateral/Recourse Carrying Amount of Liabilities September 30 December 31 September 30 December 31 September 30 December 31 Contingent repurchase commitments $1,729 $1,605 $1,729 $1,605 $9 Indemnifications to ULA: Contributed Delta program launch inventory 52 72 Contract pricing 261 261 $7 7 Other Delta contracts 176 191 Credit guarantees 106 109 51 55 16 16

Postretirement Plans (Tables)

Postretirement Plans (Tables)	9 Months Ended
	Sep. 30, 2018
Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Net Periodic Benefit Cost	The components of net periodic benefit cost were as follows: Nine months ended September 30 Three months ended September 30 Pension Plans 2018 2017 2018 2017 Service cost $322 $301 $107 $100 Interest cost 2,086 2,243 696 747 Expected return on plan assets (3,007 ) (2,883 ) (1,002 ) (961 ) Amortization of prior service credits (42 ) (29 ) (14 ) (9 ) Recognized net actuarial loss 847 603 282 201 Settlement/curtailment/other losses 43 1 Net periodic benefit cost $249 $236 $69 $78 Net periodic benefit cost included in Earnings from operations $237 $376 $79 $123 Net periodic benefit cost included in Other income/(loss), net (98 ) (88 ) (50 ) (26 ) Net periodic benefit cost included in Earnings before income taxes $139 $288 $29 $97
Other Postretirement Benefit Plan, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Net Periodic Benefit Cost	Nine months ended September 30 Three months ended September 30 Other Postretirement Plans 2018 2017 2018 2017 Service cost $71 $80 $24 $27 Interest cost 145 171 48 57 Expected return on plan assets (6 ) (5 ) (2 ) (1 ) Amortization of prior service credits (94 ) (102 ) (31 ) (34 ) Recognized net actuarial (gain)/loss (8 ) 8 (3 ) 2 Net periodic benefit cost $108 $152 $36 $51 Net periodic benefit cost included in Earnings from operations $63 $78 $21 $25 Net periodic benefit cost included in Other income/(loss), net 77 91 29 31 Net periodic benefit cost included in Earnings before income taxes $140 $169 $50 $56

Shareholders' Equity (Tables)

Shareholders' Equity (Tables)	9 Months Ended
	Sep. 30, 2018
Equity [Abstract]
Accumulated other comprehensive income	Changes in Accumulated other comprehensive loss (AOCI) by component for the nine and three months ended September 30, 2018 and 2017 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, 2017 ($143 ) ($2 ) ($127 ) ($13,351 ) ($13,623 ) Other comprehensive income before reclassifications 121 111 1 233 Amounts reclassified from AOCI 44 310 (2) 354 Net current period Other comprehensive income 121 155 311 587 Balance at September 30, 2017 ($22 ) ($2 ) $28 ($13,040 ) ($13,036 ) Balance at January 1, 2018 ($15 ) ($2 ) $54 ($16,410 ) ($16,373 ) Other comprehensive (loss)/income before reclassifications (55 ) 3 (97 ) (3 ) (152 ) Amounts reclassified from AOCI 19 557 (2) 576 Net current period Other comprehensive (loss)/income (55 ) 3 (78 ) 554 424 Balance at September 30, 2018 ($70 ) $1 ($24 ) ($15,856 ) ($15,949 ) Balance at June 30, 2017 ($66 ) ($2 ) ($22 ) ($13,144 ) ($13,234 ) Other comprehensive income before reclassifications 44 40 84 Amounts reclassified from AOCI 10 104 (2) 114 Net current period Other comprehensive income 44 50 104 198 Balance at September 30, 2017 ($22 ) ($2 ) $28 ($13,040 ) ($13,036 ) Balance at June 30, 2018 ($72 ) $1 ($29 ) ($16,039 ) ($16,139 ) Other comprehensive (loss)/income before reclassifications 2 (4 ) (1 ) (3 ) Amounts reclassified from AOCI 9 184 (2) 193 Net current period Other comprehensive income 2 5 183 190 Balance at September 30, 2018 ($70 ) $1 ($24 ) ($15,856 ) ($15,949 ) (1) Net of tax. (2) Primarily relates to amortization of actuarial losses for the nine and three months ended September 30, 2017 totaling $394 and $131 (net of tax of ($217) and ($72) ) and for the nine and three months ended September 30, 2018 totaling $657 and $219 (net of tax of ($182) and ($60)

Derivative Financial Instrume_2

Derivative Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Derivative Instruments, Notional Amounts and Fair Values	The notional amounts and fair values of derivative instruments in the Condensed Consolidated Statements of Financial Position were as follows: Notional amounts (1) Other assets Accrued liabilities September 30 December 31 September 30 December 31 September 30 December 31 Derivatives designated as hedging instruments: Foreign exchange contracts $2,781 $2,930 $48 $131 ($73 ) ($63 ) Interest rate contracts 125 125 1 3 Commodity contracts 40 56 5 4 (4 ) (6 ) Derivatives not receiving hedge accounting treatment: Foreign exchange contracts 591 406 8 16 (11 ) (5 ) Commodity contracts 614 563 Total derivatives $4,151 $4,080 $62 $154 ($88 ) ($74 ) Netting arrangements (30 ) (61 ) 30 61 Net recorded balance $32 $93 ($58 ) ($13 ) (1)
Schedule Of Derivative Instruments, Gains/(Losses)	Gains/(losses) associated with our cash flow and undesignated hedging transactions and their effect on Other comprehensive income/(loss) and Net earnings were as follows: Nine months ended September 30 Three months ended September 30 2018 2017 2018 2017 Effective portion recognized in Other comprehensive income, net of taxes: Foreign exchange contracts ($100 ) $116 ($7 ) $40 Commodity contracts 3 (5 ) 3 Effective portion reclassified out of Accumulated other comprehensive loss into earnings, net of taxes: Foreign exchange contracts (20 ) (43 ) (11 ) (11 ) Commodity contracts 1 (1 ) 2 1 Forward points recognized in Other income, net: Foreign exchange contracts 5 3 1 Undesignated derivatives recognized in Other income, net: Foreign exchange contracts (2 ) 6 (1 ) 1

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2018
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. September 30, 2018 December 31, 2017 Total Level 1 Level 2 Total Level 1 Level 2 Assets Money market funds $2,263 $2,263 $1,582 $1,582 Available-for-sale debt investments: Commercial paper 97 $97 70 $70 Corporate notes 384 384 382 382 U.S. government agencies 18 18 47 47 Other equity investments 14 14 18 18 Derivatives 32 32 93 93 Total assets $2,808 $2,277 $531 $2,192 $1,600 $592 Liabilities Derivatives ($58 ) ($58 ) ($13 ) ($13 ) Total liabilities ($58 ) ($58 ) ($13 ) ($13 )
Fair Value, Assets Measured On Nonrecurring Basis Using Unobservable Inputs	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 nine months ended September 30 due to long-lived asset impairment and the fair value and asset classification of the related assets as of the impairment date: 2018 2017 Fair Value Total Losses Fair Value Total Losses Operating lease equipment $45 ($16 ) $89 ($31 ) Investments (47 ) 1 (30 ) Property, plant and equipment 8 (2 ) Acquired intangible assets 14 (1 ) Total $45 ($63 ) $112 ($64 )
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 nine months ended September 30, 2018 , 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 Value Valuation Technique(s) Unobservable Input Range Median or Average Operating lease equipment $45 Market approach Aircraft value publications $41 - $63 (1) Median $46 Aircraft condition adjustments ($4) - $3 (2) Net ($1) (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)
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 Condensed Consolidated Statements of Financial Position were as follows: September 30, 2018 Carrying Amount Total Fair Value Level 1 Level 2 Level 3 Assets Notes receivable, net $987 $1,006 $1,006 Liabilities Debt, excluding capital lease obligations and commercial paper (11,131 ) (12,066 ) (11,974 ) ($92 ) December 31, 2017 Carrying Amount Total Fair Value Level 1 Level 2 Level 3 Assets Notes receivable, net $1,022 $1,046 $1,046 Liabilities Debt, excluding capital lease obligations and commercial paper (10,380 ) (11,923 ) (11,823 ) ($100 )

Segment and Revenue Informati_2

Segment and Revenue Information (Tables)	9 Months Ended
	Sep. 30, 2018
Disaggregation of Revenue [Line Items]
Schedule Of Unallocated Items and Eliminations	Components of Unallocated items, eliminations and other are shown in the following table. Nine months ended September 30 Three months ended September 30 2018 2017 2018 2017 Share-based plans ($60 ) ($67 ) ($24 ) ($21 ) Deferred compensation (112 ) (174 ) (56 ) (78 ) Amortization of previously capitalized interest (67 ) (68 ) (19 ) (22 ) Eliminations and other unallocated items (929 ) (462 ) (359 ) (112 ) Unallocated items, eliminations and other ($1,168 ) ($771 ) ($458 ) ($233 ) Pension FAS/CAS service cost adjustment $780 $811 $260 $271 Postretirement FAS/CAS service cost adjustment 239 238 77 75 FAS/CAS service cost adjustment $1,019 $1,049 $337 $346
Reconciliation of Assets from Segment to Consolidated	Segment assets are summarized in the table below: September 30 December 31 Commercial Airplanes $65,509 $64,647 Defense, Space & Security 18,688 18,476 Global Services 12,843 12,491 Boeing Capital 3,120 3,156 Unallocated items, eliminations and other 14,499 13,592 Total $114,659 $112,362
Commercial Airplanes Segment [Member]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue	BCA revenues by customer location consist of the following: (Dollars in millions) Nine months ended September 30 Three months ended September 30 2018 2017 2018 2017 Revenue from contracts with customers: Europe $7,189 $6,519 $1,882 $1,754 China 9,433 7,510 4,677 4,016 Asia, other than China 5,966 4,981 1,886 1,898 Middle East 3,931 7,157 1,598 2,577 Other 3,598 2,773 1,098 601 Total non-U.S. revenues 30,117 28,940 11,141 10,846 United States 12,170 12,120 3,821 3,872 Total revenues from contracts with customers 42,287 41,060 14,962 14,718 Intersegment revenues, eliminated on consolidation 1,122 1,566 314 675 Total segment revenues $43,409 $42,626 $15,276 $15,393 Revenue recognized on fixed price contracts 100 % 100 % 100 % 100 % Revenue recognized at a point in time 94 % 94 % 91 % 95 %
Defense, Space & Security [Member]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue	BDS revenues on contracts with customers, based on the customer's location, consist of the following: (Dollars in millions) Nine months ended September 30 Three months ended September 30 2018 2017 2018 2017 Revenue from contracts with customers: U.S. customers $12,201 $11,924 $4,178 $3,917 Non U.S. customers (1) 4,883 3,380 1,551 1,133 Total segment revenue from contracts with customers $17,084 $15,304 $5,729 $5,050 Revenue recognized over time 98 % 98 % 97 % 98 % Revenue recognized on fixed-price contracts 65 % 64 % 64 % 63 % Revenue from the U.S. government (1) 86 % 88 % 85 % 85 % (1)
Global Services [Member]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue	BGS revenues consist of the following: (Dollars in millions) Nine months ended September 30 Three months ended September 30 2018 2017 2018 2017 Revenue from contracts with customers: Commercial $7,276 $5,682 $2,431 $1,950 Government 4,703 5,064 1,608 1,617 Total revenues from contracts with customers 11,979 10,746 4,039 3,567 Intersegment revenues eliminated on consolidation 145 38 52 12 Total segment revenues $12,124 $10,784 $4,091 $3,579 Revenue recognized at a point in time 52 % 48 % 51 % 48 % Revenue recognized on fixed-price contracts 88 % 89 % 85 % 89 % Revenue from the U.S. government (1) 32 % 40 % 32 % 38 % (1)

Summary Of Business Segment D_3

Summary Of Business Segment Data (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Segment Reporting Information [Line Items]
Revenues	$ 25,146	$ 24,223	$ 72,786	$ 69,235
Earnings from operations	2,227	2,630	7,812	7,366
Other income, net	12	40	63	91
Interest and debt expense	(106)	(87)	(317)	(267)
Earnings before income taxes	2,133	2,583	7,558	7,190
Income tax (expense)/benefit	230	(773)	(522)	(2,052)
Net earnings	2,363	1,810	7,036	5,138
Operating Segments [Member]
Segment Reporting Information [Line Items]
Earnings from operations	2,348	2,517	7,961	7,088
Operating Segments [Member] | Commercial Airplanes [Member]
Segment Reporting Information [Line Items]
Revenues	15,276	15,393	43,409	42,626
Earnings from operations	2,023	1,513	5,175	3,665
Operating Segments [Member] | Defense, Space & Security [Member]
Segment Reporting Information [Line Items]
Revenues	5,729	5,050	17,084	15,304
Earnings from operations	(245)	486	925	1,649
Operating Segments [Member] | Global Services [Member]
Segment Reporting Information [Line Items]
Revenues	4,091	3,579	12,124	10,784
Earnings from operations	543	495	1,790	1,687
Operating Segments [Member] | Boeing Capital [Member]
Segment Reporting Information [Line Items]
Revenues	77	70	214	234
Earnings from operations	27	23	71	87
Unallocated items, eliminations and other [Member]
Segment Reporting Information [Line Items]
Revenues	(27)	131	(45)	287
Unallocated items, eliminations and other	(458)	(233)	(1,168)	(771)
FAS/CAS service cost adjustment	$ 337	$ 346	$ 1,019	$ 1,049

Basis Of Presentation (Details)

Basis Of Presentation (Details) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended		9 Months Ended		12 Months Ended
		Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017	Dec. 31, 2016	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2015
Basis of Presentation [Line Items]
Net earnings		$ 2,363	$ 1,810	$ 7,036	$ 5,138
Increase/(Decrease) in revenue due to change in accounting estimate		(59)	(44)	(14)	426
Increase/(Decrease) in Earnings from operations due to change in accounting estimate		$ (155)	$ (215)	$ (314)	$ 207
Change in Earnings Per Share Due to Change in Accounting Estimate		$ (0.30)	$ (0.25)	$ (0.50)	$ 0.24
Retained earnings		$ 54,666		$ 54,666		$ 49,618
Accumulated Other Comprehensive Income (Loss), Net of Tax	[1]	$ (15,949)	$ (13,036)	$ (15,949)	$ (13,036)	(16,373)	$ (13,623)	$ (16,139)	$ (13,234)
Accounting Standards Update 2014-09 [Member]
Basis of Presentation [Line Items]
Cumulative Effect of New Accounting Principle in Period of Adoption						1,301	139			$ 901
Net earnings						261	$ 139
Adjustments for New Accounting Pronouncement [Member]
Basis of Presentation [Line Items]
Net earnings			$ (43)		$ 73
Retained earnings						4,298
Accumulated Other Comprehensive Income (Loss), Net of Tax						(2,997)
Accounting Standards Update 2018-02 [Member]
Basis of Presentation [Line Items]
Retained earnings						2,997
Accumulated Other Comprehensive Income (Loss), Net of Tax						(2,997)
Retained Earnings [Member] | Accounting Standards Update 2014-09 [Member]
Basis of Presentation [Line Items]
Cumulative Effect of New Accounting Principle in Period of Adoption						$ 1,301				$ 901
[1]	Net of tax.

Impact of Adoption of New Sta_3

Impact of Adoption of New Standards Impact of Adoption of New Standards (Schedule of Accounting Changes) (Details) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended		9 Months Ended		12 Months Ended
		Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017	Dec. 31, 2016	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2015
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Treasury Stock, Value		$ 51,781		$ 51,781		$ 43,454
Additional Paid in Capital		6,714		6,714		6,804
Income Statement [Abstract]
Revenues		25,146	$ 24,223	72,786	$ 69,235
Financing Interest Expense		18	27	51	53
Cost of Revenue		(21,040)	(19,956)	(59,400)	(56,731)
Gross Profit		4,106	4,267	13,386	12,504
Income from operating investments, net		32	49	112	169
General and Administrative Expense		(1,154)	(918)	(3,345)	(2,890)
Research and Development Expense		(826)	(768)	(2,417)	(2,417)
(Gain)/Loss on dispositions, net		(69)		(76)
Earnings from operations		2,227	2,630	7,812	7,366
Other income, net		12	40	63	91
Interest and Debt Expense		(106)	(87)	(317)	(267)
Earnings before income taxes		2,133	2,583	7,558	7,190
Income tax (expense)/benefit		230	(773)	(522)	(2,052)
Net earnings		$ 2,363	$ 1,810	$ 7,036	$ 5,138
Earnings Per Share, Basic		$ 4.11	$ 3.03	$ 12.08	$ 8.49
Earnings Per Share, Diluted		$ 4.07	$ 2.99	$ 11.95	$ 8.39
Assets [Abstract]
Cash and cash equivalents		$ 8,034	$ 8,569	$ 8,034	$ 8,569	8,813
Short-term and other investments		1,956		1,956		1,179
Accounts receivable, net		2,893		2,893		2,894
Unbilled receivables, net		9,936		9,936		8,194
Current portion of customer financing, net		431		431		309
Inventories		62,038		62,038		61,388
Other current assets		2,398		2,398		2,417
Assets, Current		87,686		87,686		85,194
Customer financing, net		2,785		2,785		2,756
Property, plant and equipment, net		12,571		12,571		12,672
Goodwill		5,722		5,722		5,559
Acquired intangible assets, net		2,530		2,530		2,573
Deferred income taxes		323		323		321
Investments		1,190		1,190		1,260
Other assets, net of accumulated amortization		1,852		1,852		2,027
Assets		114,659		114,659		112,362
Liabilities and equity
Accounts payable		13,663		13,663		12,202
Accrued liabilities		12,869		12,869		13,069
Advances and billings in excess of related costs
Advances and progress billings		51,496		51,496		48,042
Short-term debt and current portion of long-term debt		1,389		1,389		1,335
Total current liabilities		79,417		79,417		74,648
Deferred income taxes		1,738		1,738		2,188
Accrued retiree health care		5,394		5,394		5,545
Accrued pension plan liability, net		15,927		15,927		16,471
Other long-term liabilities		2,905		2,905		2,015
Long-term debt		10,487		10,487		9,782
Retained earnings		54,666		54,666		49,618
Accumulated other comprehensive loss	[1]	(15,949)	(13,036)	(15,949)	(13,036)	(16,373)	$ (13,623)	$ (16,139)	$ (13,234)
Total shareholders’ equity		(1,289)		(1,289)		1,656
Total equity		(1,209)	2,258	(1,209)	2,258	1,713	1,917
Total liabilities and equity		114,659		114,659		112,362
Cash flows - operation activities:
Net earnings		2,363	1,810	7,036	5,138
Non-cash items -
Share-based plans expense				150	151
Depreciation and amortization				1,531	1,470
Asset Impairment Charges				63	75
Customer financing valuation (benefit)/expense				(3)	4
Gain on dispositions, net		69		76
Other charges and credits, net				158	196
Changes in assets and liabilities -
Accounts receivable				10	(558)
Unbilled receivables				(1,732)	(1,805)
Advances and progress billings				3,457	4,714
Inventories				(173)	(800)
Other current assets				(5)	(337)
Accounts payable				1,181	780
Accrued liabilities				890	(102)
Advances and billings in excess of related costs
Income taxes receivable, payable and deferred				(252)	1,507
Other long-term liabilities				1	25
Pension and other postretirement plans				(89)	(550)
Customer financing, net				(175)	634
Other				403	(99)
Net Cash Provided by (Used in) Operating Activities				12,375	10,443
Cash flows - investing activities:
Payments to Acquire Property, Plant, and Equipment				1,227	1,304
Property, plant and equipment reductions				117	30
Contributions to investments				(2,145)	(2,815)
Proceeds from investments				1,369	2,612
Purchase of distribution rights				(56)	(131)
Other				(5)	7
Net Cash Provided by (Used in) Investing Activities				(2,197)	(1,601)
Cash flows - financing activities:
New borrowings				4,696	876
Debt repayments				(4,029)	(83)
Stock options exercised				70	291
Employee taxes on certain share-based payment arrangements				(247)	(118)
Common shares repurchased				(8,415)	(7,500)
Dividends paid				(2,976)	(2,575)
Net cash used by financing activities				(10,866)	(9,109)
Effect of exchange rate changes on cash and cash equivalents, including restricted				(37)	73
Net increase/(decrease) in cash & cash equivalents, including restricted				(725)	(194)
Cash & cash equivalents, including restricted, at beginning of year				8,887	8,869	8,869
Cash & cash equivalents, including restricted, at end of period		8,162	8,675	8,162	8,675	8,887	8,869
Restricted Cash and Cash Equivalents	[2]	(128)	(106)	(128)	(106)	(74)
Cash and cash equivalents at end of period		8,034	8,569	8,034	8,569	8,813
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total equity		(1,209)	2,258	(1,209)	2,258	1,713	1,917
Common Stock [Member]
Liabilities and equity
Total equity		5,061	5,061	5,061	5,061	5,061	5,061
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total equity		5,061	5,061	5,061	5,061	5,061	5,061
Additional Paid-In Capital [Member]
Liabilities and equity
Total equity		6,714	6,754	6,714	6,754	6,804	4,762
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total equity		6,714	6,754	6,714	6,754	6,804	4,762
Treasury Stock [Member]
Liabilities and equity
Total equity		(51,781)	(41,745)	(51,781)	(41,745)	(43,454)	(36,097)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total equity		(51,781)	(41,745)	(51,781)	(41,745)	(43,454)	(36,097)
Retained Earnings [Member]
Liabilities and equity
Total equity		54,666	45,165	54,666	45,165	49,618	41,754
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total equity		54,666	45,165	54,666	45,165	49,618	41,754
Accumulated Other Comprehensive Loss [Member]
Liabilities and equity
Total equity		(15,949)	(13,036)	(15,949)	(13,036)	(16,373)	(13,623)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total equity		(15,949)	(13,036)	(15,949)	(13,036)	(16,373)	(13,623)
Non-Controlling Interest [Member]
Liabilities and equity
Total equity		80	59	80	59	57	60
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total equity		80	59	80	59	57	60
Adjustments for New Accounting Pronouncement [Member]
Income Statement [Abstract]
Revenues			(86)		1,211
Cost of Revenue			31		(1,092)
Gross Profit			(55)		119
General and Administrative Expense			(3)		(2)
Research and Development Expense			(1)		1
Earnings from operations			(59)		118
Other income, net			(5)		(3)
Earnings before income taxes			(64)		115
Income tax (expense)/benefit			21		(42)
Net earnings			$ (43)		$ 73
Earnings Per Share, Basic			$ (0.07)		$ 0.12
Earnings Per Share, Diluted			$ (0.07)		$ 0.12
Assets [Abstract]
Accounts receivable, net						(7,622)
Unbilled receivables, net						8,194
Inventories						17,044
Other current assets						2,417
Assets, Current						20,033
Customer financing, net						16
Deferred income taxes						(20)
Assets						20,029
Liabilities and equity
Accrued liabilities						(2,223)
Advances and billings in excess of related costs						(27,440)
Advances and progress billings						48,042
Total current liabilities						18,379
Deferred income taxes						349
Retained earnings						4,298
Accumulated other comprehensive loss						(2,997)
Total shareholders’ equity						1,301
Total equity						1,301
Total liabilities and equity						20,029
Cash flows - operation activities:
Net earnings			$ (43)		$ 73
Non-cash items -
Depreciation and amortization					(17)
Other charges and credits, net					6
Changes in assets and liabilities -
Accounts receivable					1,425
Unbilled receivables					(1,805)
Advances and progress billings					4,714
Inventories					(1,054)
Other current assets					(337)
Accounts payable					2
Accrued liabilities					(214)
Advances and billings in excess of related costs					(2,828)
Income taxes receivable, payable and deferred					42
Customer financing, net					(1)
Other					(3)
Net Cash Provided by (Used in) Operating Activities					3
Cash flows - investing activities:
Contributions to investments					32
Other					3
Net Cash Provided by (Used in) Investing Activities					35
Cash flows - financing activities:
Net increase/(decrease) in cash & cash equivalents, including restricted					38
Cash & cash equivalents, including restricted, at beginning of year					68	68
Cash & cash equivalents, including restricted, at end of period			106		106		68
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total equity						1,301
Accounting Standards Update 2014-09 [Member]
Income Statement [Abstract]
Net earnings						261	139
Cash flows - operation activities:
Net earnings						261	139
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative Effect of New Accounting Principle in Period of Adoption						1,301	139			$ 901
Accounting Standards Update 2014-09 [Member] | Retained Earnings [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative Effect of New Accounting Principle in Period of Adoption						1,301				$ 901
Accounting Standards Update 2018-02 [Member]
Liabilities and equity
Retained earnings						2,997
Accumulated other comprehensive loss						(2,997)
Fiscal Year 2016 [Member] | Accounting Standards Update 2014-09 [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative Effect of New Accounting Principle in Period of Adoption							139
Fiscal Year 2017 [Member] | Accounting Standards Update 2014-09 [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative Effect of New Accounting Principle in Period of Adoption						261
Product [Member]
Income Statement [Abstract]
Revenues		22,463	21,782	64,848	61,667
Cost of Goods and Services Sold		(18,882)	(18,050)	(53,134)	(50,936)
Product [Member] | Adjustments for New Accounting Pronouncement [Member]
Income Statement [Abstract]
Revenues			(43)		1,183
Cost of Goods and Services Sold					(1,080)
Service [Member]
Income Statement [Abstract]
Revenues		2,683	2,441	7,938	7,568
Cost of Goods and Services Sold		$ (2,140)	(1,879)	$ (6,215)	(5,742)
Service [Member] | Adjustments for New Accounting Pronouncement [Member]
Income Statement [Abstract]
Revenues			(43)		28
Cost of Goods and Services Sold			31		(12)
Previously Reported [Member]
Income Statement [Abstract]
Revenues			24,309		68,024
Cost of Revenue			(19,987)		(55,639)
Gross Profit			4,322		12,385
General and Administrative Expense			(915)		(2,888)
Research and Development Expense			(767)		(2,418)
Earnings from operations			2,689		7,248
Other income, net			45		94
Earnings before income taxes			2,647		7,075
Income tax (expense)/benefit			(794)		(2,010)
Net earnings			$ 1,853		$ 5,065
Earnings Per Share, Basic			$ 3.10		$ 8.37
Earnings Per Share, Diluted			$ 3.06		$ 8.27
Assets [Abstract]
Accounts receivable, net						10,516
Unbilled receivables, net
Inventories						44,344
Other current assets
Assets, Current						65,161
Customer financing, net						2,740
Deferred income taxes						341
Assets						92,333
Liabilities and equity
Accrued liabilities						15,292
Advances and billings in excess of related costs						27,440
Advances and progress billings
Total current liabilities						56,269
Deferred income taxes						1,839
Total shareholders’ equity						355
Total equity						412	877
Total liabilities and equity						92,333
Cash flows - operation activities:
Net earnings			$ 1,853		$ 5,065
Non-cash items -
Depreciation and amortization					1,487
Other charges and credits, net					190
Changes in assets and liabilities -
Accounts receivable					(1,983)
Unbilled receivables
Advances and progress billings
Inventories					254
Other current assets
Accounts payable					778
Accrued liabilities					112
Advances and billings in excess of related costs					2,828
Income taxes receivable, payable and deferred					1,465
Customer financing, net					635
Other					(96)
Net Cash Provided by (Used in) Operating Activities					10,440
Cash flows - investing activities:
Contributions to investments					(2,847)
Other					4
Net Cash Provided by (Used in) Investing Activities					(1,636)
Cash flows - financing activities:
Net increase/(decrease) in cash & cash equivalents, including restricted					(232)
Cash & cash equivalents, including restricted, at beginning of year					8,801	8,801
Cash & cash equivalents, including restricted, at end of period							8,801
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total equity						412	877
Previously Reported [Member] | Retained Earnings [Member]
Liabilities and equity
Total equity						45,320	40,714
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total equity						45,320	$ 40,714
Previously Reported [Member] | Accumulated Other Comprehensive Loss [Member]
Liabilities and equity
Total equity						(13,376)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total equity						$ (13,376)
Previously Reported [Member] | Product [Member]
Income Statement [Abstract]
Revenues			21,825		60,484
Cost of Goods and Services Sold			(18,050)		(49,856)
Previously Reported [Member] | Service [Member]
Income Statement [Abstract]
Revenues			2,484		7,540
Cost of Goods and Services Sold			$ (1,910)		$ (5,730)
[1]	Net of tax.
[2]	Reflects amounts restricted in support of our workers’ compensation programs, employee benefit programs, and insurance premiums.

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		9 Months Ended
		Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Earnings Per Share [Abstract]
Net earnings		$ 2,363	$ 1,810	$ 7,036	$ 5,138
Undistributed Earnings (Loss) Allocated to Participating Securities, Basic		2	2	5	4
Net earnings available to common shareholders		$ 2,361	$ 1,808	$ 7,031	$ 5,134
Basic weighted average shares outstanding		574.8	598.3	582.7	605.6
Participating securities		0.6	0.7	0.7	0.8
Basic weighted average common shares outstanding		574.2	597.6	582	604.8
Basic weighted average shares outstanding		574.8	598.3	582.7	605.6
Dilutive potential common shares	[1]	6	8	6.2	7.2
Diluted weighted average shares outstanding		580.8	606.3	588.9	612.8
Participating securities		0.6	0.7	0.7	0.8
Diluted weighted average common shares outstanding		580.2	605.6	588.2	612
Income (Loss) from Continuing Operations, Per Basic Share		$ 4.11		$ 12.08	$ 8.49
Earnings Per Share, Basic		4.11	$ 3.03	12.08	8.49
Income (Loss) from Continuing Operations, Per Diluted Share		$ 4.07	$ 2.99	$ 11.95	$ 8.39
[1]	Diluted 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 Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Performance Awards [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares excluded from the computation of diluted earnings	2.2	3.4	2.6	4.6
Performance-Based Restricted Stock Units (PBRSUs) [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares excluded from the computation of diluted earnings	0.2	0.1	0.3	0.6

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2018	Dec. 31, 2017
Income Tax Examination [Line Items]
Effective income tax rate	(10.80%)	29.90%	6.90%	28.50%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent						35.00%
State and Local Jurisdiction
Income Tax Examination [Line Items]
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit	$ 445		$ 445
Scenario, Forecast [Member]
Income Tax Examination [Line Items]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent					21.00%
Tax Year 2013-2014 [Member]
Income Tax Examination [Line Items]
Effective Income Tax Rate Reconciliation, Tax Settlement, Domestic, Amount			$ 412

Inventories (Narrative) (Detail

Inventories (Narrative) (Details) $ in Millions	Sep. 30, 2018USD ($)aircraft	Dec. 31, 2017USD ($)
Inventory [Line Items]
Long-term contracts in progress	$ 1,908	$ 1,854
Other Inventory, Gross	6,562	6,673
Airplane Program 787 [Member]
Inventory [Line Items]
Inventory, Work in Process, Gross	28,905	30,695
Amount of Deferred Costs Related to Long-term Contracts	23,584	25,358
Advances on Inventory Purchases	2,485	3,189
Unamortized Tooling	2,774	3,173
Recovered Production Costs Excess Recoverable Under Existing Firm Orders	19,786
Unrecovered Production Costs, Excess Unrecoverable under Existing Firm Orders	6,572
Airplane Program 747 [Member]
Inventory [Line Items]
Unamortized Tooling	125	151
Recovered Production Costs Excess Recoverable Under Existing Firm Orders	$ 119
Unsold Aircraft | aircraft	1
Ula [Member]
Inventory [Line Items]
Inventory Amount, Unpriced Change Orders for Long-term Contracts or Programs	$ 120
Long-term contracts in progress	227	284
Capitalized Precontract Costs [Member]
Inventory [Line Items]
Inventory Amount, Unpriced Change Orders for Long-term Contracts or Programs	663	933
Early Issue Sales Consideration [Member]
Inventory [Line Items]
Inventory Amount, Unpriced Change Orders for Long-term Contracts or Programs	$ 2,896	$ 2,976

Inventories (Inventory Disclosu

Inventories (Inventory Disclosure Table) (Details) - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Inventory Disclosure [Abstract]
Long-term contracts in progress	$ 1,908	$ 1,854
Commercial aircraft programs	53,568	52,861
Commercial spare parts, used aircraft, general stock materials and other	6,562	6,673
Total	$ 62,038	$ 61,388

Contracts with Customers Contra

Contracts with Customers Contracts with Customers (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Revenue from Contract with Customer [Abstract]
Unbilled receivables, net	$ 9,936		$ 9,936		$ 8,194
Contract with Customer, Asset, Explanation of Change			primarily driven by revenue recognized at BDS and BCA in excess of billings
Advances and progress billings	51,496		$ 51,496		$ 48,042
Contract with Customer, Liability, Explanation of Change			primarily driven by advances on orders received in excess of revenue recognized at BCA.
Contract with Customer, Liability, Revenue Recognized	$ 6,249	$ 6,009	$ 19,006	$ 17,696

Customer Financing (Narrative)

Customer Financing (Narrative) (Details) - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Customer Financing [Line Items]
Financing Receivable, Individually Evaluated for Impairment	$ 411	$ 422
Impaired Financing Receivable, Recorded Investment	$ 400	$ 411
B Credit Rating [Member]
Customer Financing [Line Items]
Percentage of Credit Default Rates Applied to Customers	23.90%
BB Credit Rating [Member]
Customer Financing [Line Items]
Percentage of Credit Default Rates Applied to Customers	6.70%
BBB Credit Rating [Member]
Customer Financing [Line Items]
Percentage of Credit Default Rates Applied to Customers	0.70%

Customer Financing (Schedule Of

Customer Financing (Schedule Of Customer Financing) (Details) - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Customer Financing [Abstract]
Investment in sales-type/finance leases	$ 1,153	$ 1,364
Notes	987	1,022
Total financing receivables	2,140	2,386
Operating lease equipment, at cost, less accumulated depreciation of $204 and $305	1,085	691
Gross customer financing	3,225	3,077
Less allowance for losses on receivables	(9)	(12)
Total	3,216	3,065
Operating lease equipment- Accumulated depreciation	$ 204	$ 305

Customer Financing (Financing R

Customer Financing (Financing Receivable Credit Quality Indicators) (Details) - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment [Line Items]
Carrying value of financing receivables	$ 2,140	$ 2,386
BBB Credit Rating [Member]
Financing Receivable, Recorded Investment [Line Items]
Carrying value of financing receivables	1,001	1,170
BB Credit Rating [Member]
Financing Receivable, Recorded Investment [Line Items]
Carrying value of financing receivables	443	627
B Credit Rating [Member]
Financing Receivable, Recorded Investment [Line Items]
Carrying value of financing receivables	286	177
CCC Credit Rating [Member]
Financing Receivable, Recorded Investment [Line Items]
Carrying value of financing receivables	$ 410	$ 412

Customer Financing (Carrying Va

Customer Financing (Carrying Values Related to Major Aircraft Concentrations) (Details) - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Customer Financing [Line Items]
Customer financing carrying value	$ 3,225	$ 3,077
Operating leases	1,085	691
B-717 [Member]
Customer Financing [Line Items]
Customer financing carrying value	963	1,081
Operating leases	226	269
B747-8 [Member]
Customer Financing [Line Items]
Customer financing carrying value	478	483
Operating leases	134	138
B-737 [Member]
Customer Financing [Line Items]
Customer financing carrying value	330	161
Operating leases	267	127
MD 80 Aircraft [Member]
Customer Financing [Line Items]
Customer financing carrying value	207	231
B-757 [Member]
Customer Financing [Line Items]
Customer financing carrying value	204	217
Operating leases	25	27
B747-400 aircraft [Member]
Customer Financing [Line Items]
Customer financing carrying value	131	170
Operating leases	56	88
B-787 [Member]
Customer Financing [Line Items]
Customer financing carrying value	115
B-777 [Member]
Customer Financing [Line Items]
Customer financing carrying value	83	14
Operating leases	72
B-767 [Member]
Customer Financing [Line Items]
Customer financing carrying value		98
Operating leases		$ 25

Investments (Schedule Of Invest

Investments (Schedule Of Investments) (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Investments [Abstract]
Equity method investments	[1]	$ 1,149		$ 1,149		$ 1,214
Time deposits		1,343		1,343		613
Available for sale debt instruments		480		480		490
Restricted Cash and Cash Equivalents	[2]	128	$ 106	128	$ 106	74
Equity and other investments		46		46		48
Total		3,146		3,146		$ 2,439
Dividends received		$ 79	$ 47	$ 222	$ 195
[1]	Dividends received were $222 and $79 for the nine and three months ended September 30, 2018 and $195 and $47 during the same periods in the prior year.
[2]	Reflects amounts restricted in support of our workers’ compensation programs, employee benefit programs, and insurance premiums.

Other Assets (Narrative) (Detai

Other Assets (Narrative) (Details) - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Other Assets [Line Items]
Other assets, net of accumulated amortization	$ 1,852	$ 2,027
Sea Launch Receivables [Member]
Other Assets [Line Items]
Other assets, net of accumulated amortization	295	$ 356
Sea Launch Receivables [Member] | S.P. Koroley Rocket And Space Corporation Energia [Member]
Other Assets [Line Items]
Other assets, net of accumulated amortization	162
Sea Launch Receivables [Member] | PO Yuzhnoye Mashinostroitelny Zavod [Member]
Other Assets [Line Items]
Other assets, net of accumulated amortization	89
Sea Launch Receivables [Member] | KB Yuzhnoye [Member]
Other Assets [Line Items]
Other assets, net of accumulated amortization	$ 44

Commitments And Contingencies_2

Commitments And Contingencies (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Sep. 30, 2018	Sep. 10, 2018	Dec. 31, 2017	Jan. 27, 2017	Dec. 31, 2011
Commitments And Contingencies [Line Items]
Loss Contingency, Range of Possible Loss, Portion Not Accrued		$ 800		$ 868
Letters of Credit Outstanding, Amount		3,762		3,708
Financing Commitment [Member]
Commitments And Contingencies [Line Items]
Other Commitment		19,744		10,221
Total Contractual Trade-In Commitment [Member] | Commercial Aircraft Commitments [Member]
Commitments And Contingencies [Line Items]
Other Commitment		1,726		1,462
Net Amounts Payable to Customers Related to Probable Contractual Trade-In Commitments [Member] | Commercial Aircraft Commitments [Member]
Commitments And Contingencies [Line Items]
Other Commitment		371		155
Fair Value of Trade In Value of Aircraft [Member] | Commercial Aircraft Commitments [Member]
Commitments And Contingencies [Line Items]
Other Commitment		361		$ 155
Ula [Member]
Commitments And Contingencies [Line Items]
Inventory subject to uncertainty		120
KC-46A Tanker [Member] | Capitalized Precontract Costs [Member]
Commitments And Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss		368
KC-46A Tanker [Member] | Potential Termination Liabilities [Member]
Commitments And Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss		$ 1,341
KC-46A Tanker [Member] | EMD Contract
Commitments And Contingencies [Line Items]
Contract Value						$ 4,900
KC-46A Tanker [Member] | Low Rate Initial Production [Member]
Commitments And Contingencies [Line Items]
Contract Value2	$ 2,800
KC-46A Tanker [Member] | LRIP 3 [Member]
Commitments And Contingencies [Line Items]
Contract Value			$ 2,900		$ 2,100

Commitments And Contingencies_3

Commitments And Contingencies (Environmental) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Environmental [Roll Forward]
Beginning balance – January 1	$ 524	$ 562
Reductions for payments made	(17)	(25)
Changes in estimates	61	6
Ending balance – September 30	$ 568	$ 543

Commitments And Contingencies_4

Commitments And Contingencies (Product Warranties) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Product Warranties [Roll Forward]
Beginning balance – January 1	$ 1,211	$ 1,414
Additions for current year deliveries	176	183
Reductions for payments made	(135)	(193)
Changes in estimates	(151)	(213)
Ending balance – September 30	$ 1,101	$ 1,191

Commitments And Contingencies_5

Commitments And Contingencies (Financing Commitments) (Details) - Financing Commitment [Member] - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Financing Commitments [Line Items]
October through December 2018	$ 326
2,018	2,736
2,019	3,559
2,020	2,796
2,021	1,567
Thereafter	8,760
Total	19,744	$ 10,221
External Credit Rating, Non Investment Grade [Member]
Financing Commitments [Line Items]
Total	$ 18,540

Arrangements With Off-Balance_3

Arrangements With Off-Balance Sheet Risk (Narrative) (Details) - USD ($) $ in Millions	Jul. 05, 2018	Dec. 31, 2011	Jun. 30, 2011	Sep. 30, 2018	Dec. 31, 2017
Guarantees [Line Items]
Additional potentially unrecoverable deferred production costs		$ 114	$ 271
Controlling Interest Ownership Percentage After Acquisition	80.00%
Payments to Acquire Interest in Joint Venture	$ 3,800
ULA [Member]
Guarantees [Line Items]
Delta launch program inventories included in contributed assets				$ 1,360
Delta launch program inventories subject to inventory supply agreement				1,860
ContributedInventoryNotYetConsumedbyJointVenture				327
Contributed Delta Program Launch Inventory [Member] | ULA [Member]
Guarantees [Line Items]
Maximum Potential Payments				52	$ 72
Contract Pricing [Member] | ULA [Member]
Guarantees [Line Items]
Maximum Potential Payments				261	261
Carrying Amount of Liabilities				7	7
Other Delta Contracts [Member] | Deferred support costs [Member]
Guarantees [Line Items]
Maximum Potential Payments				85
Other Delta Contracts [Member] | Deferred production costs [Member]
Guarantees [Line Items]
Maximum Potential Payments				91
Other Delta Contracts [Member] | ULA [Member]
Guarantees [Line Items]
Maximum Potential Payments				176	191
Carrying Amount of Liabilities
Deferred Support and Production Costs [Member]
Guarantees [Line Items]
Loss Contingency, Estimate of Possible Loss				317
Credit Guarantee [Member]
Guarantees [Line Items]
Maximum Potential Payments				106	109
Carrying Amount of Liabilities				16	$ 16
Maximum [Member] | Indemnification Agreement [Member]
Guarantees [Line Items]
Loss Contingency, Estimate of Possible Loss				$ 280
Embraer [Member]
Guarantees [Line Items]
Investments Net Asset Value	$ 4,750

Arrangements With Off-Balance_4

Arrangements With Off-Balance Sheet Risk (Third Party Guarantees) (Details) - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Contingent Repurchase Commitments [Member]
Guarantor Obligations [Line Items]
Maximum Potential Payments	$ 1,729	$ 1,605
Estimated Proceeds from Collateral or Recourse	1,729	1,605
Carrying Amount of Liabilities		9
Credit Guarantee [Member]
Guarantor Obligations [Line Items]
Maximum Potential Payments	106	109
Estimated Proceeds from Collateral or Recourse	51	55
Carrying Amount of Liabilities	16	16
ULA [Member] | Contributed Delta Program Launch Inventory [Member]
Guarantor Obligations [Line Items]
Maximum Potential Payments	52	72
ULA [Member] | Contract Pricing [Member]
Guarantor Obligations [Line Items]
Maximum Potential Payments	261	261
Carrying Amount of Liabilities	7	7
ULA [Member] | Other Delta Contracts [Member]
Guarantor Obligations [Line Items]
Maximum Potential Payments	176	191
Carrying Amount of Liabilities

Debt Narrative (Details)

Debt Narrative (Details) $ in Millions	Feb. 23, 2018USD ($)
Debt Instrument [Line Items]
Debt Instrument, Issuance Date	Feb. 23, 2018
Debt Instrument, Face Amount	$ 1,400
Proceeds from Debt, Net of Issuance Costs	1,338
Two Point Eight Percent due on March 1, 2023 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 350
Debt Instrument, Maturity Date	Mar. 1, 2023
Debt Instrument, Interest Rate, Stated Percentage	2.80%
Three Point Two Five Percent due on March 1, 2028 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 350
Debt Instrument, Maturity Date	Mar. 1, 2028
Debt Instrument, Interest Rate, Stated Percentage	3.25%
Three Point Five Five Percent due on March 1, 2038 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 350
Debt Instrument, Maturity Date	Mar. 1, 2038
Debt Instrument, Interest Rate, Stated Percentage	3.55%
Three Point Six Two Five Percent due on March 1, 2048 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 350
Debt Instrument, Maturity Date	Mar. 1, 2048
Debt Instrument, Interest Rate, Stated Percentage	3.625%

Postretirement Plans (Net Perio

Postretirement Plans (Net Periodic Benefit Cost Tables) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 107	$ 100	$ 322	$ 301
Interest cost	696	747	2,086	2,243
Expected return on plan assets	(1,002)	(961)	(3,007)	(2,883)
Amortization of prior service credits	(14)	(9)	(42)	(29)
Recognized net actuarial loss	282	201	847	603
Settlement/curtailment/other losses			43	1
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)	69	78	249	236
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	24	27	71	80
Interest cost	48	57	145	171
Expected return on plan assets	(2)	(1)	(6)	(5)
Amortization of prior service credits	(31)	(34)	(94)	(102)
Recognized net actuarial loss	(3)	2	(8)	8
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)	36	51	108	152
Operating Income (Loss) [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Net periodic benefit cost included in Earnings from operations	79	123	237	376
Operating Income (Loss) [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Net periodic benefit cost included in Earnings from operations	21	25	63	78
Other Income [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Net periodic benefit cost included in Earnings from operations	(50)	(26)	(98)	(88)
Other Income [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Net periodic benefit cost included in Earnings from operations	29	31	77	91
Operating Income (Loss) Before Taxes [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Net periodic benefit cost included in Earnings from operations	29	97	139	288
Operating Income (Loss) Before Taxes [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Net periodic benefit cost included in Earnings from operations	$ 50	$ 56	$ 140	$ 169

Share-Based Compensation And _2

Share-Based Compensation And Other Compensation Arrangements (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	Feb. 26, 2018	Sep. 30, 2018
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock units (RSUs) granted to executives	260,730
Restricted stock units (RSUs) granted to executives (fair value per share)	$ 361.13
Share-based payment award vesting period (in years)	3 years
Performance Based Restricted Stock Units (PBRSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock units (RSUs) granted to executives	241,284
Restricted stock units (RSUs) granted to executives (fair value per share)	$ 390.27
Share-based payment award vesting period (in years)	3 years
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate	22.11%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate	2.36%
Performance Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based payment award vesting period (in years)	3 years
Performance award period end date	Dec. 31, 2020
Performance Awards [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Payout Amount, Aggregate		$ 0
Performance Awards [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Payout Amount, Aggregate		$ 370

Shareholders' Equity (Accumulat

Shareholders' Equity (Accumulated other comprehensive income) (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	[1]	$ (16,139)	$ (13,234)	$ (16,373)	$ (13,623)
OCI before reclassifications	[1]	(3)	84	(152)	233
Amounts reclassified from AOCI	[1]	193	114	576	354
Net current period Other comprehensive income/(loss)	[1]	190	198	424	587
Ending Balance	[1]	(15,949)	(13,036)	(15,949)	(13,036)
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax		219	131	657	394
Amortization of actuarial losses included in net periodic pension cost, tax		(60)	(72)	(182)	(217)
Currency Translation Adjustments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance		(72)	(66)	(15)	(143)
OCI before reclassifications		2	44	(55)	121
Net current period Other comprehensive income/(loss)		2	44	(55)	121
Ending Balance		(70)	(22)	(70)	(22)
Unrealized Gains and Losses on Certain Investments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance		1	(2)	(2)	(2)
OCI before reclassifications				3
Net current period Other comprehensive income/(loss)				3
Ending Balance		1	(2)	1	(2)
Unrealized Gains and Losses on Derivative Instruments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance		(29)	(22)	54	(127)
OCI before reclassifications		(4)	40	(97)	111
Amounts reclassified from AOCI		9	10	19	44
Net current period Other comprehensive income/(loss)		5	50	(78)	155
Ending Balance		(24)	28	(24)	28
Defined Benefit Pension Plans and Other Postretirement Benefits [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance		(16,039)	(13,144)	(16,410)	(13,351)
OCI before reclassifications		(1)		(3)	1
Amounts reclassified from AOCI	[2]	184	104	557	310
Net current period Other comprehensive income/(loss)		183	104	554	311
Ending Balance		$ (15,856)	$ (13,040)	$ (15,856)	$ (13,040)
[1]	Net of tax.
[2]	Primarily relates to amortization of actuarial losses for the nine and three months ended September 30, 2017 totaling $394 and $131 (net of tax of ($217) and ($72) ) and for the nine and three months ended September 30, 2018 totaling $657 and $219 (net of tax of ($182) and ($60)

Derivative Financial Instrume_3

Derivative Financial Instruments (Narrative) (Details) $ in Millions	9 Months Ended
	Sep. 30, 2018USD ($)
Derivative [Line Items]
Cash flow hedge gain/(loss) to be reclassified during the next 12 months, pre-tax	$ (16)
Fair value of foreign exchange and commodity contracts that have credit-risk-related contingent features that are in a net liability position	$ 17

Derivative Financial Instrume_4

Derivative Financial Instruments (Schedule of Derivative Instruments, Notional Amounts and Fair Values) (Details) - USD ($) $ in Millions		Sep. 30, 2018	Dec. 31, 2017
Derivative [Line Items]
Notional amounts	[1]	$ 4,151	$ 4,080
Other Assets		62	154
Accrued Liabilities		(88)	(74)
Netting Arrangements, Other Assets		(30)	(61)
Netting Arrangements, Accrued Liabilities		30	61
Net Recorded balance, Other Assets		32	93
Net Recorded balance, Accrued Liabilities		(58)	(13)
Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member]
Derivative [Line Items]
Notional amounts		2,781	2,930
Other Assets		48	131
Accrued Liabilities		(73)	(63)
Designated as Hedging Instrument [Member] | Interest Rate Contract [Member]
Derivative [Line Items]
Notional amounts		125	125
Other Assets		1	3
Designated as Hedging Instrument [Member] | Commodity Contract [Member]
Derivative [Line Items]
Notional amounts		40	56
Other Assets		5	4
Accrued Liabilities		(4)	(6)
Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member]
Derivative [Line Items]
Notional amounts		591	406
Other Assets		8	16
Accrued Liabilities		(11)	(5)
Not Designated as Hedging Instrument [Member] | Commodity Contract [Member]
Derivative [Line Items]
Notional amounts		$ 614	$ 563
[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)) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Derivative [Line Items]
Effective portion recognized in other comprehensive income/(loss), net of taxes	$ (4)	$ 40	$ (97)	$ 111
Effective portion reclassified out of Accumulated other comprehensive income/(loss) into earnings, net of taxes	(9)	(10)	(19)	(44)
Foreign Exchange Contract [Member]
Derivative [Line Items]
Effective portion recognized in other comprehensive income/(loss), net of taxes	(7)	40	(100)	116
Effective portion reclassified out of Accumulated other comprehensive income/(loss) into earnings, net of taxes	(11)	(11)	(20)	(43)
Forward points recognized in other income (expense), net		(1)	(5)	(3)
Undesignated derivatives recognized in Other income/(expense), net	(1)	1	(2)	6
Commodity Contract [Member]
Derivative [Line Items]
Effective portion recognized in other comprehensive income/(loss), net of taxes	3		3	(5)
Effective portion reclassified out of Accumulated other comprehensive income/(loss) into earnings, net of taxes	$ 2	$ 1	$ 1	$ (1)

Fair Value Measurements Fair Va

Fair Value Measurements Fair Value, Assets and Liabilities Measured on Recurring Basis (Details) - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale debt instruments	$ 480	$ 490
Derivatives, Assets	32	93
Derivatives, Liabilities	(58)	(13)
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market funds	2,263	1,582
Commercial Paper, at Carrying Value	97	70
Available for sale debt instruments	384	382
Available for Sale Securities, Government Agencies	18	47
Investments, Fair Value Disclosure	14	18
Derivatives, Assets	32	93
Total assets	2,808	2,192
Derivatives, Liabilities	(58)	(13)
Total liabilities	(58)	(13)
Fair Value, Measurements, Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market funds	2,263	1,582
Investments, Fair Value Disclosure	14	18
Total assets	2,277	1,600
Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Commercial Paper, at Carrying Value	97	70
Available for sale debt instruments	384	382
Available for Sale Securities, Government Agencies	18	47
Derivatives, Assets	32	93
Total assets	531	592
Derivatives, Liabilities	(58)	(13)
Total liabilities	$ (58)	$ (13)

Fair Value Measurements Fair _2

Fair Value Measurements Fair Value, Assets Measured on Nonrecurring Basis Using Unobservable Inputs (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Nonrecurring fair value losses	$ (63)	$ (75)
Fair Value Measurements Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Nonrecurring fair value losses	(63)	(64)
Fair Value Measurements Nonrecurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	45	112
Operating Lease Equipment And Assets Held For Sale Or Re-Lease [Member] | Fair Value Measurements Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Nonrecurring fair value losses	(16)	(31)
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 Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	45	89
Property, Plant and Equipment [Member] | Fair Value Measurements Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Nonrecurring fair value losses		(2)
Property, Plant and Equipment [Member] | Fair Value Measurements Nonrecurring [Member] | Level 3 [Member] | Valuation, Income Approach [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure		8
Investments [Member] | Fair Value Measurements Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Nonrecurring fair value losses	(47)	(30)
Investments [Member] | Fair Value Measurements Nonrecurring [Member] | Level 3 [Member] | Valuation, Income Approach [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure		1
Other assets and Acquired intangible assets [Member] | Fair Value Measurements Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Nonrecurring fair value losses		(1)
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 Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure		$ 14

Fair Value, Assets Measured On

Fair Value, Assets Measured On Nonrecurring Basis, Valuation Techniques (Details) - USD ($) $ in Millions		Sep. 30, 2018	Sep. 30, 2017
Aircraft Value Publications [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Fair value of assets and liabilities measured on nonrecurring basis valuation techniques, median		$ 46
Aircraft Value Publications [Member] | Minimum [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Range of fair value of assets measured on nonrecurring basis valuation techniques	[1]	41
Aircraft Value Publications [Member] | Maximum [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Range of fair value of assets measured on nonrecurring basis valuation techniques	[1]	63
Aircraft Condition Adjustments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Net fair value of assets measured on nonrecurring basis valuation techniques		(1)
Aircraft Condition Adjustments [Member] | Minimum [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Range of fair value of assets measured on nonrecurring basis valuation techniques	[2]	(4)
Aircraft Condition Adjustments [Member] | Maximum [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Range of fair value of assets measured on nonrecurring basis valuation techniques	[2]	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		45	$ 112
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 Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Assets, Fair Value Disclosure		$ 45	$ 89
[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 Measurements Fair _3

Fair Value Measurements Fair Values And Related Carrying Values of Financial Instruments (Details) - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Notes receivable, Fair value	$ 1,006	$ 1,046
Debt, excluding capital lease obligations, Fair value	(12,066)	(11,923)
Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Notes receivable, Fair value	1,006	1,046
Debt, excluding capital lease obligations, Fair value	(11,974)	(11,823)
Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt, excluding capital lease obligations, Fair value	(92)	(100)
Carrying Amount [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Notes receivable, net Carrying amount	987	1,022
Debt, excluding capital lease obligations, Carrying amount	$ (11,131)	$ (10,380)

Segment and Revenue Informati_3

Segment and Revenue Information Segment and Revenue Information (Narrative) (Details) $ in Millions	9 Months Ended
	Sep. 30, 2018USD ($)segments
Segment Reporting Information [Line Items]
Number of Reportable Segments | segments	4
Revenue, Remaining Performance Obligation, Amount | $	$ 491,179
Fiscal Year 2019 [Member]
Segment Reporting Information [Line Items]
Revenue, Remaining Performance Obligation, Percent Recognized	24.00%
Fiscal Year 2022 [Member]
Segment Reporting Information [Line Items]
Revenue, Remaining Performance Obligation, Percent Recognized	69.00%

Segment and Revenue Informati_4

Segment and Revenue Information Segment and Revenue Information (Schedule of Revenue Disaggregation) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Disaggregation of Revenue [Line Items]
Revenues	$ 25,146	$ 24,223	$ 72,786	$ 69,235
Unallocated items, eliminations and other [Member]
Disaggregation of Revenue [Line Items]
Revenues	(27)	131	(45)	287
Operating Segments [Member] | Global Services [Member]
Disaggregation of Revenue [Line Items]
Revenues	4,091	3,579	12,124	10,784
Operating Segments [Member] | Global Services [Member] | Commercial Customers [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	2,431	1,950	7,276	5,682
Operating Segments [Member] | Global Services [Member] | Government Customers [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	1,608	1,617	4,703	5,064
Operating Segments [Member] | Global Services [Member] | External Customers [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 4,039	$ 3,567	$ 11,979	$ 10,746
Operating Segments [Member] | Global Services [Member] | U S Government Contracts [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, excluding assessed tax, Percentage	32.00%	38.00%	32.00%	40.00%
Operating Segments [Member] | Global Services [Member] | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, excluding assessed tax, Percentage	85.00%	89.00%	88.00%	89.00%
Operating Segments [Member] | Global Services [Member] | Transferred at Point in Time [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, excluding assessed tax, Percentage	51.00%	48.00%	52.00%	48.00%
Operating Segments [Member] | Commercial Airplanes Segment [Member]
Disaggregation of Revenue [Line Items]
Revenues	$ 15,276	$ 15,393	$ 43,409	$ 42,626
Operating Segments [Member] | Commercial Airplanes Segment [Member] | External Customers [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 14,962	$ 14,718	$ 42,287	$ 41,060
Operating Segments [Member] | Commercial Airplanes Segment [Member] | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, excluding assessed tax, Percentage	100.00%	100.00%	100.00%	100.00%
Operating Segments [Member] | Commercial Airplanes Segment [Member] | Transferred at Point in Time [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, excluding assessed tax, Percentage	91.00%	95.00%	94.00%	94.00%
Operating Segments [Member] | Commercial Airplanes Segment [Member] | Non-US [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 11,141	$ 10,846	$ 30,117	$ 28,940
Operating Segments [Member] | Commercial Airplanes Segment [Member] | Europe
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	1,882	1,754	7,189	6,519
Operating Segments [Member] | Commercial Airplanes Segment [Member] | China
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	4,677	4,016	9,433	7,510
Operating Segments [Member] | Commercial Airplanes Segment [Member] | Asia Other Than China
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	1,886	1,898	5,966	4,981
Operating Segments [Member] | Commercial Airplanes Segment [Member] | Middle East
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	1,598	2,577	3,931	7,157
Operating Segments [Member] | Commercial Airplanes Segment [Member] | Other
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	1,098	601	3,598	2,773
Operating Segments [Member] | Commercial Airplanes Segment [Member] | United States
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	3,821	3,872	12,170	12,120
Operating Segments [Member] | Defense, Space & Security [Member]
Disaggregation of Revenue [Line Items]
Revenues	$ 5,729	$ 5,050	$ 17,084	$ 15,304
Operating Segments [Member] | Defense, Space & Security [Member] | U S Government Contracts [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, excluding assessed tax, Percentage	85.00%	85.00%	86.00%	88.00%
Operating Segments [Member] | Defense, Space & Security [Member] | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, excluding assessed tax, Percentage	64.00%	63.00%	65.00%	64.00%
Operating Segments [Member] | Defense, Space & Security [Member] | Transferred over Time [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, excluding assessed tax, Percentage	97.00%	98.00%	98.00%	98.00%
Operating Segments [Member] | Defense, Space & Security [Member] | Non-US [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 1,551	$ 1,133	$ 4,883	$ 3,380
Operating Segments [Member] | Defense, Space & Security [Member] | United States
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	4,178	3,917	12,201	11,924
Intersegment Eliminations [Member] | Global Services [Member]
Disaggregation of Revenue [Line Items]
Revenues	52	12	145	38
Intersegment Eliminations [Member] | Commercial Airplanes Segment [Member]
Disaggregation of Revenue [Line Items]
Revenues	$ 314	$ 675	$ 1,122	$ 1,566

Schedule Of Unallocated Items a

Schedule Of Unallocated Items and Eliminations (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Segment Reporting Information [Line Items]
Share-based plans			$ (150)	$ (151)
Unallocated items, eliminations and other [Member]
Segment Reporting Information [Line Items]
Share-based plans	$ (24)	$ (21)	(60)	(67)
Deferred compensation	(56)	(78)	(112)	(174)
Amortization of previously capitalized interest	(19)	(22)	(67)	(68)
Eliminations and other unallocated items	(359)	(112)	(929)	(462)
Unallocated items, eliminations and other	(458)	(233)	(1,168)	(771)
FAS/CAS service cost adjustment	337	346	1,019	1,049
Unallocated items, eliminations and other [Member] | Pension Plans, Defined Benefit [Member]
Segment Reporting Information [Line Items]
FAS/CAS service cost adjustment	260	271	780
Net periodic benefit cost included in Earnings from operations				811
Unallocated items, eliminations and other [Member] | Other Postretirement Benefit Plan, Defined Benefit [Member]
Segment Reporting Information [Line Items]
FAS/CAS service cost adjustment	$ 77	$ 75	$ 239	$ 238

Reconciliation of Assets from S

Reconciliation of Assets from Segment to Consolidated (Details) - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Assets	$ 114,659	$ 112,362
Operating Segments [Member] | Commercial Airplanes [Member]
Segment Reporting Information [Line Items]
Assets	65,509	64,647
Operating Segments [Member] | Defense, Space & Security [Member]
Segment Reporting Information [Line Items]
Assets	18,688	18,476
Operating Segments [Member] | Global Services [Member]
Segment Reporting Information [Line Items]
Assets	12,843	12,491
Operating Segments [Member] | Boeing Capital [Member]
Segment Reporting Information [Line Items]
Assets	3,120	3,156
Unallocated items, eliminations and other [Member]
Segment Reporting Information [Line Items]
Assets	$ 14,499	$ 13,592

Subsequent Events Subsequent _2

Subsequent Events Subsequent Events (Narrative) (Details) - KLX [Member] - Subsequent Event [Member] $ in Millions	Oct. 09, 2018USD ($)
Subsequent Event [Line Items]
Business Combination, Consideration Transferred	$ 4,316
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt	$ 1,029