The Boeing Company (BA) 10-Q 25 Apr 18 2018 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2018	Apr. 18, 2018
Document Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q1
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		582,580,973
Entity Current Reporting Status	Yes

Condensed Consolidated Statemen

Condensed Consolidated Statements Of Operations - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Income Statement [Abstract]
Sales of products	$ 20,820	$ 19,367
Sales of services	2,562	2,594
Total revenues	23,382	21,961
Cost of products	(16,816)	(16,062)
Cost of services	(1,992)	(1,998)
Boeing Capital interest expense	(16)	(13)
Total costs and expenses	(18,824)	(18,073)
Gross profit	4,558	3,888
Income from operating investments, net	74	81
General and administrative expense	(997)	(929)
Research and development expense, net	(764)	(836)
Gain on dispositions, net	4	2
Earnings from operations	2,875	2,206
Other income, net	66	26
Interest and debt expense	(102)	(87)
Earnings before income taxes	2,839	2,145
Income tax expense	(362)	(566)
Net earnings	2,477	1,579
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ 2,476	$ 1,579
Basic earnings per share	$ 4.19	$ 2.57
Diluted earnings per share	4.15	2.54
Cash dividends paid per share	$ 1.71	$ 1.42
Weighted average diluted shares (millions)	597.2	621.2

Condensed Consolidated Stateme3

Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Net earnings	$ 2,477	$ 1,579
Currency translation adjustments	27	34
Unrealized gain on certain investments, net of tax of $0 and ($1)	2	1
Unrealized (loss)/gain on derivative instruments [Abstract]
Unrealized (loss)/gain arising during period, net of tax of $0 and ($28)	(2)	52
Reclassification adjustment for losses included in net earnings, net of tax of $(1) and ($9)	4	16
Total unrealized gain on derivative instruments, net of tax	2	68
Defined benefit pension plans & other postretirement benefits [Abstract]
Amortization of prior service credits included in net periodic pension cost, net of tax of $10 and $16	(36)	(28)
Net actuarial gain arising during the period, net of tax of $0 and $(1)		3
Amortization of actuarial losses included in net periodic pension cost, net of tax of ($60) and ($72)	219	132
Pension and postretirement cost related to our equity method investments, net of tax of $1 and $1	(3)	(2)
Total defined benefit pension plans and other postretirement benefits, net of tax	180	105
Other comprehensive income, net of tax	211	208
Comprehensive income related to noncontrolling interests	(1)
Comprehensive income, net of tax	$ 2,687	$ 1,787

Condensed Consolidated Stateme4

Condensed Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Statement of Comprehensive Income [Abstract]
Unrealized gain on certain investments, tax		$ (1)
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax Effect [Abstract]
Unrealized loss arising during period, tax		(28)
Reclassification adjustment for losses included in net earnings, tax	(1)	(9)
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
Net actuarial gains arising during the period, tax		(1)
Amortization of actuarial losses included in net periodic pension cost, tax	(60)	(72)
Settlements and curtailments included in net income, tax
Pension and post retirement benefits related to our equity method investments, tax	$ 1	$ 1

Condensed Consolidated Stateme5

Condensed Consolidated Statements Of Financial Position - USD ($) $ in Millions		Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
Assets
Cash and cash equivalents		$ 9,235	$ 8,813	$ 8,190
Short-term and other investments		656	1,179
Accounts receivable, net		2,802	2,894
Unbilled receivables, net		9,822	8,194
Current portion of customer financing, net		244	309
Inventories		61,303	61,388
Other current assets		2,481	2,417
Total current assets		86,543	85,194
Customer financing, net		2,753	2,756
Property, plant and equipment, net of accumulated depreciation of $17,894 and $17,641		12,628	12,672
Goodwill		5,558	5,559
Acquired intangible assets, net		2,525	2,573
Deferred income taxes		325	321
Investments		1,248	1,260
Other assets, net of accumulated amortization of $514 and $482		1,969	2,027
Total assets		113,549	112,362
Liabilities and equity
Accounts payable		12,613	12,202
Accrued liabilities		10,983	13,069
Advances and progress billings		49,955	48,042
Short-term debt and current portion of long-term debt		1,981	1,335
Total current liabilities		75,532	74,648
Deferred income taxes		2,001	2,188
Accrued retiree health care		5,494	5,545
Accrued pension plan liability, net		16,279	16,471
Other long-term liabilities		2,474	2,015
Long-term debt		10,471	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		6,624	6,804
Treasury stock, at cost - 428,038,987 and 421,222,326 shares		46,396	43,454
Retained earnings		52,095	49,618
Accumulated other comprehensive loss	[1]	(16,162)	(16,373)	(13,415)	$ (13,623)
Total shareholders’ equity		1,222	1,656
Noncontrolling interests		76	57
Total equity		1,298	1,713	$ 1,323	$ 1,917
Total liabilities and equity		$ 113,549	$ 112,362
[1]	Net of tax.

Condensed Consolidated Stateme6

Condensed Consolidated Statements Of Financial Position (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Property, plant and equipment, accumulated depreciation	$ 17,894	$ 17,641
Other assets, accumulated amortization	$ 514	$ 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	428,038,987	421,222,327

Condensed Consolidated Stateme7

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	1,579				1,579
Other comprehensive income, net of tax of ($50) in 2018 and ($94) in 2017	208					208
Share-based compensation and related dividend equivalents	48		48
Treasury shares issued for stock options exercised, net	173		(42)	215
Treasury shares issued for other share-based plans, net	(102)		(164)	62
Common shares repurchased	(2,500)			(2,500)
Balance at Mar. 31, 2017	1,323	5,061	4,604	(38,320)	43,333	(13,415)	60
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	2,476				2,477		(1)
Other comprehensive income, net of tax of ($50) in 2018 and ($94) in 2017	211					211
Share-based compensation and related dividend equivalents	45		45
Treasury shares issued for stock options exercised, net	50		(25)	75
Treasury shares issued for other share-based plans, net	(217)		(200)	(17)
Common shares repurchased	(3,000)			(3,000)
Changes in noncontrolling interests	20						20
Balance at Mar. 31, 2018	$ 1,298	$ 5,061	$ 6,624	$ (46,396)	$ 52,095	$ (16,162)	$ 76

Condensed Consolidated Stateme8

Condensed Consolidated Statements Of Equity (Parenthetical) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Statement of Stockholders' Equity [Abstract]
Other Comprehensive Income, tax, portion attributable to parent	$ (50)	$ (94)

Condensed Consolidated Stateme9

Condensed Consolidated Statement of Cash Flows Consolidated Statements of Cash Flows - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2018	Mar. 31, 2017
Cash flows - operation activities:
Net earnings		$ 2,477	$ 1,579
Non-cash items -
Share-based plans expense		45	50
Depreciation and amortization		501	468
Asset Impairment Charges		20	23
Customer financing valuation (benefit)/expense		(1)	7
Gain on dispositions, net		4	2
Other charges and credits, net		(60)	(58)
Changes in assets and liabilities -
Accounts receivable		(92)	264
Unbilled receivables		1,628	568
Advances and progress billings		1,917	1,375
Inventories		(283)	1,491
Other current assets		103	117
Accounts payable		591	616
Accrued liabilities		(1,337)	(282)
Income taxes receivable, payable and deferred		348	552
Other long-term liabilities		(243)	(72)
Pension and other postretirement plans		(50)	10
Customer financing, net		(44)	(231)
Other		(124)	75
Net cash provided by operating activities		3,136	2,098
Cash flows - investing activities:
Payments to Acquire Property, Plant, and Equipment		394	466
Property, plant and equipment reductions		27	9
Contributions to investments		249	605
Proceeds from investments		752	803
Purchase of distribution rights		20
Other		(3)	1
Net cash provided/(used) by investing activities		119	(260)
Cash flows - financing activities:
New borrowings		2,687	872
Debt repayments		1,371	34
Contributions from noncontrolling interests		20
Stock options exercised		51	174
Employee taxes on certain share-based payment arrangements		226	107
Common shares repurchased		3,000	2,500
Dividends paid		1,006	868
Net cash used by financing activities		(2,845)	(2,463)
Effect of exchange rate changes on cash and cash equivalents, including restricted		8	20
Net increase/(decrease) in cash & cash equivalents, including restricted		418	(605)
Cash & cash equivalents, including restricted, at beginning of year		8,887	8,869
Cash & cash equivalents, including restricted, at end of period		9,305	8,264
Restricted Cash and Cash Equivalents	[1]	(70)	(74)
Cash and cash equivalents at end of period		$ 9,235	$ 8,190
[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)	3 Months Ended
	Mar. 31, 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) Three months ended March 31 2018 2017 Revenues: Commercial Airplanes $13,652 $12,953 Defense, Space & Security 5,762 5,112 Global Services 3,943 3,653 Boeing Capital 65 92 Unallocated items, eliminations and other (40 ) 151 Total revenues $23,382 $21,961 Earnings from operations: Commercial Airplanes $1,508 $870 Defense, Space & Security 649 549 Global Services 644 623 Boeing Capital 20 39 Segment operating profit 2,821 2,081 Unallocated items, eliminations and other (311 ) (221 ) FAS/CAS service cost adjustment 365 346 Earnings from operations 2,875 2,206 Other income, net 66 26 Interest and debt expense (102 ) (87 ) Earnings before income taxes 2,839 2,145 Income tax expense (362 ) (566 ) Net earnings $2,477 $1,579 This information is an integral part of the Notes to the Condensed Consolidated Financial Statements. See Note 19 for further segment results.

Basis Of Presentation

Basis Of Presentation	3 Months Ended
	Mar. 31, 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 March 31, 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 requires a modified retrospective transition approach for existing leases, whereby the new rules will be applied to the earliest year presented. We plan to adopt the new lease standard in 2019 and do not expect it 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 Accounting Standards Updates (ASU): 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 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 $128 to Net earnings for the first quarter 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 a company 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 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. Incentive and award fees that cannot be reasonably estimated are recorded when awarded. 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: Three months ended March 31 2018 2017 Increase to Revenue $117 $207 Increase to Earnings from Operations $78 $108 Increase to Diluted EPS $0.11 $0.13 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. We allocate the transaction price to each distinct performance obligation, including each commercial spare part, based on relative standalone selling prices. 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	3 Months Ended
	Mar. 31, 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; and 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 Consolidated Financial Statements as a result of adopting these standards was as follows: Condensed Consolidated Statement of Operations (Unaudited) Three months ended March 31, 2017 (Dollars in millions) Reported Impact of New Standards Restated Sales of products $18,512 $855 $19,367 Sales of services 2,464 130 2,594 Total revenues 20,976 985 21,961 Cost of products (15,363 ) (699 ) (16,062 ) Cost of services (1,888 ) (110 ) (1,998 ) Boeing Capital interest expense (13 ) (13 ) Total costs and expenses (17,264 ) (809 ) (18,073 ) 3,712 176 3,888 Income from operating investments, net 81 81 General and administrative expense (933 ) 4 (929 ) Research and development expense, net (838 ) 2 (836 ) Gain on dispositions, net 2 2 Earnings from operations 2,024 182 2,206 Other income, net 22 4 26 Interest and debt expense (87 ) (87 ) Earnings before income taxes 1,959 186 2,145 Income tax expense (508 ) (58 ) (566 ) Net earnings $1,451 $128 $1,579 Basic earnings per share $2.36 $0.21 $2.57 Diluted earnings per share $2.34 $0.20 $2.54 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) Three months ended March 31, 2017 Reported Impact of New Standards Restated Cash flows - operating activities: Net earnings $1,451 $128 $1,579 Adjustments to reconcile net earnings to net cash provided by operating activities: Non-cash items - Share-based plans expense 50 50 Depreciation and amortization 471 (3 ) 468 Investment/asset impairment charges, net 23 23 Customer financing valuation expense 7 7 Gain on dispositions, net (2 ) (2 ) Other charges and credits, net 52 6 58 Changes in assets and liabilities - Accounts receivable (769 ) 505 (264 ) Unbilled receivables (568 ) (568 ) Advances and progress billings 1,375 1,375 Inventories (31 ) (1,460 ) (1,491 ) Other current assets (117 ) (117 ) Accounts payable 616 616 Accrued liabilities (613 ) 331 (282 ) Advances and billings in excess of related costs 249 (249 ) Income taxes receivable, payable and deferred 495 57 552 Other long-term liabilities (72 ) (72 ) Pension and other postretirement plans 10 10 Customer financing, net 232 (1 ) 231 Other (75 ) (75 ) Net cash provided by operating activities 2,094 4 2,098 Cash flows - investing activities: Property, plant and equipment additions (466 ) (466 ) Property, plant and equipment reductions 9 9 Contributions to investments (605 ) (605 ) Proceeds from investments 803 803 Other (3 ) 2 (1 ) Net cash used by investing activities (262 ) 2 (260 ) Cash flows - financing activities: New borrowings 872 872 Debt repayments (34 ) (34 ) Stock options exercised 174 174 Employee taxes on certain share-based payment arrangements (107 ) (107 ) Common shares repurchased (2,500 ) (2,500 ) Dividends paid (868 ) (868 ) Net cash used by financing activities (2,463 ) (2,463 ) Effect of exchange rate changes on cash & cash equivalents, including restricted 20 20 Net (decrease)/increase in cash & cash equivalents, including restricted (611 ) 6 (605 ) Cash & cash equivalents, including restricted*, at beginning of year 8,801 68 8,869 Cash & cash equivalents, including restricted*, at end of period $8,190 $74 8,264 Less restricted cash & cash equivalents, included in Investments 74 Cash and cash equivalents at end of period $8,190 * 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	3 Months Ended
	Mar. 31, 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) Three months ended March 31 2018 2017 Net earnings $2,477 $1,579 Less: earnings available to participating securities 3 2 Net earnings available to common shareholders $2,474 $1,577 Basic Basic weighted average shares outstanding 590.8 614.4 Less: participating securities 0.7 0.8 Basic weighted average common shares outstanding 590.1 613.6 Diluted Basic weighted average shares outstanding 590.8 614.4 Dilutive potential common shares (1) 6.4 6.8 Diluted weighted average shares outstanding 597.2 621.2 Less: participating securities 0.7 0.8 Diluted weighted average common shares outstanding 596.5 620.4 Net earnings per share: Basic $4.19 $2.57 Diluted 4.15 2.54 (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) Three months ended March 31 2018 2017 Performance awards 2.9 5.6 Performance-based restricted stock units 0.5 1.3

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2018
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Our effective income tax rate was 12.8% for the three months ended March 31, 2018 and 26.4% in the comparable period in 2017 . The 2018 tax rate reflects the enactment of the Tax Cuts and Jobs Act of 2017 (TCJA), which permanently reduced the U.S. corporate statutory rate from 35% to 21% effective January 1, 2018. The 2018 tax rate reflects tax benefits for sales of U.S. manufactured goods to non-U.S. customers and research and development credits as well as a 4% benefit from discrete tax benefits, primarily related to share-based payments recorded in the first quarter of 2018. The 2017 tax rate of 26.4% reflects the 35% statutory tax rate reduced by tax benefits for research and development credits, U.S. manufacturing activity and share-based payments. 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 assess available tax methods and elections, 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 2013. The Internal Revenue Service (IRS) is currently examining the 2013-2014 tax years. 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 federal and state matters under audit may decrease by up to $540 and $435 , respectively, based on current estimates.

Inventories

Inventories	3 Months Ended
	Mar. 31, 2018
Inventory Disclosure [Abstract]
Inventories	Inventories Inventories consisted of the following: March 31 December 31 Long-term contracts in progress $1,926 $1,854 Commercial aircraft programs 53,008 52,861 Commercial spare parts, used aircraft, general stock materials and other 6,369 6,673 Total $61,303 $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 $267 and $284 at March 31, 2018 and December 31, 2017 . See indemnifications to ULA in Note 11 . Included in inventories are capitalized precontract costs of $691 at March 31, 2018 primarily related to the KC-46A Tanker and F/A-18, 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 March 31, 2018 and December 31, 2017 , commercial aircraft programs inventory included the following amounts related to the 787 program: $30,049 and $30,695 of work in process (including deferred production costs of $24,690 and $25,358 ), $2,839 and $3,189 of supplier advances, and $3,042 and $3,173 of unamortized tooling and other non-recurring costs. At March 31, 2018 , $22,034 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 $5,698 is expected to be recovered from units included in the program accounting quantity that represent expected future orders. At March 31, 2018 and December 31, 2017 , commercial aircraft programs inventory included $138 and $151 of unamortized tooling costs related to the 747 program. At March 31, 2018 , $133 of unamortized tooling costs are expected to be recovered from units included in the program accounting quantity that have firm orders or commitments. At March 31, 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 $2,958 and $2,976 at March 31, 2018 and December 31, 2017 .

Contracts with Customers (Notes

Contracts with Customers (Notes)	3 Months Ended
	Mar. 31, 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 $9,822 at March 31, 2018 , primarily driven by revenue recognized at BDS in excess of billings . Advances and progress billings increased from $48,042 at December 31, 2017 to $49,955 during the three months ended March 31, 2018 , primarily driven by advances on orders received in excess of revenue recognized at BCA. Revenues recognized during the three months ended March 31, 2018 and 2017 from amounts recorded as Advances and progress billings at the beginning of each year were $6,453 and $5,411 .

Customer Financing

Customer Financing	3 Months Ended
	Mar. 31, 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: March 31 December 31 Financing receivables: Investment in sales-type/finance leases $1,265 $1,364 Notes 934 1,022 Total financing receivables 2,199 2,386 Operating lease equipment, at cost, less accumulated depreciation of $286 and $305 808 691 Gross customer financing 3,007 3,077 Less allowance for losses on receivables (10 ) (12 ) Total $2,997 $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 March 31, 2018 and December 31, 2017 , we individually evaluated for impairment customer financing receivables of $417 and $422 , of which $406 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 March 31 December 31 BBB $1,130 $1,170 BB 490 627 B 173 177 CCC 406 412 Total carrying value of financing receivables $2,199 $2,386 At March 31, 2018 , our allowance related to receivables with ratings of B, BB and BBB. We applied default rates that averaged 22.9% , 7.4% and 0.8% , 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. 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: March 31 December 31 717 Aircraft ($256 and $269 accounted for as operating leases) $1,039 $1,081 747-8 Aircraft ($136 and $138 accounted for as operating leases) 481 483 737 Aircraft ($257 and $127 accounted for as operating leases) 289 161 MD-80 Aircraft (accounted for as sales-type finance leases) 235 231 757 Aircraft ($26 and $27 accounted for as operating leases) 213 217 747-400 Aircraft ($83 and $88 accounted for as operating leases) 162 170 767 Aircraft ($0 and $25 accounted for as operating leases) 16 98 777 Aircraft ($17 and $0 accounted for as operating leases) 30 14

Investments

Investments	3 Months Ended
	Mar. 31, 2018
Investments [Abstract]
Investments	Investments Our investments, which are recorded in Short-term and other investments or Investments, consisted of the following: March 31 December 31 Equity method investments (1) $1,203 $1,214 Time deposits 108 613 Available for sale debt instruments 478 490 Restricted cash & cash equivalents (2) 70 74 Equity and other investments 45 48 Total $1,904 $2,439 (1) Dividends received were $88 and $96 for the three months ended March 31, 2018 and 2017 . (2) Reflects amounts restricted in support of our workers’ compensation programs, employee benefit programs, and insurance premiums.

Other Assets

Other Assets	3 Months Ended
	Mar. 31, 2018
Other Assets [Abstract]
Other Assets	Other Assets Sea Launch At March 31, 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 March 31, 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 . In 2013, we filed an action in the United States District Court for the Central District of California seeking reimbursement from the other Sea Launch partners. In 2016, the United States District Court for the Central District of California issued a judgment in favor of Boeing. Later that year, we reached an agreement which we believe will enable us to recover the outstanding receivable balance from RSC Energia over the next several years. We continue to pursue collection efforts against the former Ukrainian partners in connection with the court judgment. We continue to believe the partners have the financial wherewithal to pay and intend to pursue vigorously all of our rights and remedies. In the event we are unable to secure reimbursement from RSC Energia and the Ukrainian Sea Launch partners, we could incur additional charges. Spirit AeroSystems As of March 31, 2018 and December 31, 2017 , Other assets included $137 of receivables related to indemnifications from Spirit AeroSystems, Inc. (Spirit) for costs incurred related to pension and retiree medical obligations of former Boeing employees who were subsequently employed by Spirit. During the fourth quarter of 2014, Boeing filed a complaint against Spirit in the Delaware Superior Court seeking to enforce our rights to indemnification and to recover from Spirit amounts incurred by Boeing for pension and retiree medical obligations. During 2017, the court ruled against Boeing and denied our claim. In January 2018, Boeing filed a notice of appeal with the Delaware Supreme Court. We believe we have substantial arguments on appeal and expect to fully recover from Spirit.

Commitments And Contingencies

Commitments And Contingencies	3 Months Ended
	Mar. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Commitments And Contingencies	Commitments and Contingencies Environmental The following table summarizes environmental remediation activity during the three months ended March 31, 2018 and 2017 . 2018 2017 Beginning balance – January 1 $524 $562 Reductions for payments made (7 ) (11 ) Changes in estimates 22 (26 ) Ending balance – March 31 $539 $525 The liabilities recorded represent our best estimate or the low end of a range of reasonably possible costs expected to be incurred to remediate sites, including operation and maintenance over periods of up to 30 years. It is reasonably possible that we may incur charges that exceed these recorded amounts because of regulatory agency orders and directives, changes in laws and/or regulations, higher than expected costs and/or the discovery of new or additional contamination. As part of our estimating process, we develop a range of reasonably possible alternate scenarios that includes the high end of a range of reasonably possible cost estimates for all remediation sites for which we have sufficient information based on our experience and existing laws and regulations. There are some potential remediation obligations where the costs of remediation cannot be reasonably estimated. At March 31, 2018 and December 31, 2017 , the high end of the estimated range of reasonably possible remediation costs exceeded our recorded liabilities by $820 and $868 . Product Warranties The following table summarizes product warranty activity recorded during the three months ended March 31, 2018 and 2017 . 2018 2017 Beginning balance – January 1 $1,211 $1,414 Additions for current year deliveries 70 70 Reductions for payments made (32 ) (74 ) Changes in estimates (101 ) (65 ) Ending balance – March 31 $1,148 $1,345 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 March 31, 2018 have expiration dates from 2018 through 2026 . At March 31, 2018 , and December 31, 2017 total contractual trade-in commitments were $1,483 and $1,462 . As of March 31, 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 $385 and $155 and the fair value of the related trade-in aircraft was $364 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 $10,038 and $10,221 as of March 31, 2018 and December 31, 2017 . The estimated earliest potential funding dates for these commitments as of March 31, 2018 are as follows: Total April through December 2018 $1,354 2019 2,960 2020 1,699 2021 1,632 2022 994 Thereafter 1,399 $10,038 As of March 31, 2018 , all 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 $3,665 and $3,708 as of March 31, 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 March 31, 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). In addition, the FY18 Omnibus spending bill signed into law on March 23, 2018 provides funding for the remainder of the fiscal year. However, the 2011 Budget Control Act continues to mandate limits on U.S. government discretionary spending and remains in effect after FY19. As a result, continued budget uncertainty and the risk of future sequestration cuts will remain unless Congress acts to repeal or suspend this law. There continues to be uncertainty with respect to program-level appropriations for the U.S. DoD and other government agencies, including the National Aeronautics and Space Administration (NASA). Although FY19 spending topline levels have been agreed to, the lower budget caps and sequestration will take effect again in fiscal year 2020 and beyond unless Congress acts to repeal or suspend the law. 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, 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 a reach-forward loss on the KC-46A Tanker program. Moreover, this and our other 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 Engineering, Manufacturing and Development (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 . At March 31, 2018 , we had approximately $370 of capitalized precontract costs and $1,330 of potential termination liabilities to suppliers. Recoverable Costs on Government Contracts Our final incurred costs for each year are subject to audit and review for allowability by the U.S. government, which can result in payment demands related to costs they believe should be disallowed. We work with the U.S. government to assess the merits of claims and where appropriate reserve for amounts disputed. If we are unable to satisfactorily resolve disputed costs, we could be required to record an earnings charge and/or provide refunds to the U.S. government.

Arrangements With Off-Balance S

Arrangements With Off-Balance Sheet Risk	3 Months Ended
	Mar. 31, 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 March 31 December 31 March 31 December 31 March 31 December 31 Contingent repurchase commitments $1,527 $1,605 $1,527 $1,605 $9 Indemnifications to ULA: Contributed Delta program launch inventory 67 72 Contract pricing 261 261 7 7 Other Delta contracts 191 191 Credit guarantees 117 109 57 55 13 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. Since inception, ULA has consumed $1,293 of the $1,360 of inventory that was contributed by us and has yet to consume $67 . Under the inventory supply agreement, we have recorded revenues and cost of sales of $1,545 through March 31, 2018 . ULA has made payments of $1,740 to us under the inventory supply agreement and we have made $48 of net indemnification payments to ULA. 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 four 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 two of these missions, followed in 2011 by a subsequent claim and appeal with respect to a third mission. The USAF did not exercise an option for a fourth mission prior to the expiration of the contract. During the second quarter of 2016, the ASBCA ruled that ULA is entitled to additional contract pricing for each of the three missions and remanded to the parties to negotiate appropriate pricing. During the fourth quarter of 2016, the USAF appealed the ASBCA's ruling. In April 2017, the USAF withdrew its appeal. 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 the three 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, and during the fourth quarter, Boeing filed a motion for summary judgment for full recovery of its costs. 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 .

Debt

Debt	3 Months Ended
	Mar. 31, 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 , after deducting underwriting discounts, commissions and offering expenses.

Postretirement Plans

Postretirement Plans	3 Months Ended
	Mar. 31, 2018
Retirement Benefits [Abstract]
Postretirement Plans	Postretirement Plans The components of net periodic benefit cost for the three months ended March 31 were as follows: Pension Other Postretirement Benefits Three months ended March 31 2018 2017 2018 2017 Service cost $108 $101 $24 $26 Interest cost 695 748 49 57 Expected return on plan assets (1,002 ) (961 ) (2 ) (2 ) Amortization of prior service credits (14 ) (10 ) (32 ) (34 ) Recognized net actuarial loss/(gain) 282 201 (3 ) 3 Settlement/curtailment/other losses 1 Net periodic benefit cost $69 $80 $36 $50 Net periodic benefit cost included in Earnings from operations $82 $131 $22 $28 Net periodic benefit cost included in Other income, net (42 ) (34 ) 24 30 Net periodic benefit cost included in Earnings before income taxes $40 $97 $46 $58

Share-Based Compensation And Ot

Share-Based Compensation And Other Compensation Arrangements	3 Months Ended
	Mar. 31, 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 March 31, 2018 , the minimum payout amount is $0 and the maximum amount we could be required to pay out is $375 .

Shareholders' Equity

Shareholders' Equity	3 Months Ended
	Mar. 31, 2018
Equity [Abstract]
Shareholders' Equity	Shareholders' Equity Accumulated Other Comprehensive Loss Changes in Accumulated other comprehensive loss (AOCI) by component for the three months ended March 31, 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 (loss)/income before reclassifications 34 1 52 1 88 Amounts reclassified from AOCI 16 104 (2) 120 Net current period Other comprehensive (loss)/income 34 1 68 105 208 Balance at March 31, 2017 ($109 ) ($1 ) ($59 ) ($13,246 ) ($13,415 ) Balance at January 1, 2018 ($15 ) ($2 ) $54 ($16,410 ) ($16,373 ) Other comprehensive (loss)/income before reclassifications 27 2 (2 ) (3 ) 24 Amounts reclassified from AOCI 4 183 (2) 187 Net current period Other comprehensive income 27 2 2 180 211 Balance at March 31, 2018 $12 $— $56 ($16,230 ) ($16,162 ) (1) Net of tax. (2) Primarily relates to amortization of actuarial losses for the three months ended March 31, 2018 and 2017 totaling $219 and $132 (net of tax of ($60) and ($72) ). These are included in the net periodic pension cost.

Derivative Financial Instrument

Derivative Financial Instruments	3 Months Ended
	Mar. 31, 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 March 31 December 31 March 31 December 31 March 31 December 31 Derivatives designated as hedging instruments: Foreign exchange contracts $3,141 $2,930 $138 $131 ($55 ) ($63 ) Interest rate contracts 125 125 3 3 Commodity contracts 35 56 4 4 (6 ) (6 ) Derivatives not receiving hedge accounting treatment: Foreign exchange contracts 270 406 14 16 (4 ) (5 ) Commodity contracts 676 563 Total derivatives $4,247 $4,080 $159 $154 ($65 ) ($74 ) Netting arrangements (53 ) (61 ) 53 61 Net recorded balance $106 $93 ($12 ) ($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: Three months ended March 31 2018 2017 Effective portion recognized in Other comprehensive income, net of taxes: Foreign exchange contracts ($2 ) $56 Commodity contracts (4 ) Effective portion reclassified out of Accumulated other comprehensive loss into earnings, net of taxes: Foreign exchange contracts (4 ) (15 ) Commodity contracts (1 ) Forward points recognized in Other income, net: Foreign exchange contracts 6 1 Undesignated derivatives recognized in Other income, net: Foreign exchange contracts 3 5 Based on our portfolio of cash flow hedges, we expect to reclassify losses of $14 (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 three months ended March 31, 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 March 31, 2018 was $15 . At March 31, 2018 , there was no collateral posted related to our derivatives.

Fair Value Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 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. March 31, 2018 December 31, 2017 Total Level 1 Level 2 Total Level 1 Level 2 Assets Money market funds $1,983 $1,983 $1,582 $1,582 Available-for-sale debt investments: Commercial paper 126 $126 70 $70 Corporate notes 340 340 382 382 U.S. government agencies 33 33 47 47 Other equity investments 17 17 18 18 Derivatives 106 106 93 93 Total assets $2,605 $2,000 $605 $2,192 $1,600 $592 Liabilities Derivatives ($12 ) ($12 ) ($13 ) ($13 ) Total liabilities ($12 ) ($12 ) ($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 three months ended March 31 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 $20 ($8 ) $31 ($11 ) Investments (12 ) 1 (11 ) Property, plant and equipment 9 (1 ) Total $20 ($20 ) $41 ($23 ) 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 three months ended March 31, 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 $20 Market approach Aircraft value publications $20 - $32 (1) Median $23 Aircraft condition adjustments ($3) - $0 (2) Net ($3) (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: March 31, 2018 Carrying Amount Total Fair Value Level 1 Level 2 Level 3 Assets Notes receivable, net $934 $956 $956 Liabilities Debt, excluding capital lease obligations and commercial paper (11,719 ) (12,943 ) (12,848 ) ($95 ) 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 March 31, 2018 and December 31, 2017 . The fair value of assets and liabilities whose carrying value approximates fair value is determined using Level 2 inputs, with the exception of cash (Level 1).

Legal Proceedings

Legal Proceedings	3 Months Ended
	Mar. 31, 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. In addition, we are subject to various U.S. government inquiries and investigations from which civil, criminal or administrative proceedings could result or have resulted in the past. Such proceedings involve or could involve claims by the government for fines, penalties, compensatory and treble damages, restitution and/or forfeitures. Under government regulations, a company, or one or more of its operating divisions or subdivisions, can also be suspended or debarred from government contracts, or lose its export privileges, based on the results of investigations. We believe, based upon current information, that the outcome of any such legal proceeding, claim, or government dispute and investigation will not have a material effect on our financial position, results of operations, or cash flows.

Segment and Revenue Information

Segment and Revenue Information	3 Months Ended
	Mar. 31, 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) Three months ended March 31 Revenue from contracts with customers: 2018 2017 Europe $3,199 $2,132 China 2,047 1,179 Asia, other than China 1,731 1,235 Middle East 461 2,398 Other 1,494 1,058 Total non-U.S. revenues 8,932 8,002 United States 4,339 4,421 Total revenues from contracts with customers 13,271 12,423 Intersegment revenues, eliminated on consolidation 381 530 Total segment revenues $13,652 $12,953 Revenue recognized on fixed price contracts 100 % 100 % For the three months ended March 31, 2018 and 2017 , approximately 95% and 93% of revenue from BCA contracts with customers was recognized at the point-in-time when an aircraft is completed and accepted by the customer. BDS revenues on contracts with customers, based on the customer's location, consist of the following: (Dollars in millions) Three months ended March 31 2018 2017 Revenue from contracts with customers: U.S. customers $4,226 $3,974 Non U.S. customers (1) 1,536 1,138 Total segment revenue from contracts with customers $5,762 $5,112 Revenue recognized over time 98 % 96 % Revenue recognized on fixed price contracts 67 % 64 % Revenue from the U.S. government (1) 87 % 87 % (1) Includes revenues earned from foreign military sales through the U.S. government. BGS revenues consist of the following: (Dollars in millions) Three months ended March 31 2018 2017 Revenue from contracts with customers: Commercial $2,102 $1,848 Government 1,782 1,792 Total revenues from contracts with customers 3,884 3,640 Intersegment revenues eliminated on consolidation 59 13 Total segment revenues $3,943 $3,653 Revenue recognized at a point in time 54 % 48 % Revenue recognized on fixed price contracts 88 % 88 % Revenue from the U.S. government (1) 37 % 42 % (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 March 31, 2018 was $486,245 . We expect approximately 30% to be converted to revenue through 2019 and approximately 71% 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. Three months ended March 31 2018 2017 Share-based plans ($18 ) ($21 ) Deferred compensation (29 ) (50 ) Amortization of previously capitalized interest (25 ) (24 ) Eliminations and other unallocated items (239 ) (126 ) Unallocated items, eliminations and other ($311 ) ($221 ) Pension FAS/CAS service cost adjustment $283 $262 Postretirement FAS/CAS service cost adjustment 82 84 FAS/CAS service cost adjustment $365 $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: March 31 December 31 Commercial Airplanes $64,846 $64,647 Defense, Space & Security 19,460 18,476 Global Services 12,636 12,491 Boeing Capital 3,007 3,156 Unallocated items, eliminations and other 13,600 13,592 Total $113,549 $112,362 Assets included in Unallocated items, eliminations and other primarily consist of Cash and cash equivalents, Short-term and other investments, Deferred tax assets, capitalized interest and assets held centrally as well as intercompany eliminations.

Basis Of Presentation (Policy)

Basis Of Presentation (Policy)	3 Months Ended
	Mar. 31, 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. 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.
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)	3 Months Ended
	Mar. 31, 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)	3 Months Ended
	Mar. 31, 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 D33

Summary Of Business Segment Data Summary of Business Segment Data (Tables)	3 Months Ended
	Mar. 31, 2018
Segment Reporting, Disclosure of Entity's Reportable Segments [Abstract]
Schedule of Segment Reporting Information, by Segment [Table Text Block]	(Dollars in millions) Three months ended March 31 2018 2017 Revenues: Commercial Airplanes $13,652 $12,953 Defense, Space & Security 5,762 5,112 Global Services 3,943 3,653 Boeing Capital 65 92 Unallocated items, eliminations and other (40 ) 151 Total revenues $23,382 $21,961 Earnings from operations: Commercial Airplanes $1,508 $870 Defense, Space & Security 649 549 Global Services 644 623 Boeing Capital 20 39 Segment operating profit 2,821 2,081 Unallocated items, eliminations and other (311 ) (221 ) FAS/CAS service cost adjustment 365 346 Earnings from operations 2,875 2,206 Other income, net 66 26 Interest and debt expense (102 ) (87 ) Earnings before income taxes 2,839 2,145 Income tax expense (362 ) (566 ) Net earnings $2,477 $1,579

Basis Of Presentation Basis of

Basis Of Presentation Basis of Presentation (Tables)	3 Months Ended
	Mar. 31, 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 Sta35

Impact of Adoption of New Standards Impact of Adoption of New Standards (Tables)	3 Months Ended
	Mar. 31, 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; and 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 Consolidated Financial Statements as a result of adopting these standards was as follows: Condensed Consolidated Statement of Operations (Unaudited) Three months ended March 31, 2017 (Dollars in millions) Reported Impact of New Standards Restated Sales of products $18,512 $855 $19,367 Sales of services 2,464 130 2,594 Total revenues 20,976 985 21,961 Cost of products (15,363 ) (699 ) (16,062 ) Cost of services (1,888 ) (110 ) (1,998 ) Boeing Capital interest expense (13 ) (13 ) Total costs and expenses (17,264 ) (809 ) (18,073 ) 3,712 176 3,888 Income from operating investments, net 81 81 General and administrative expense (933 ) 4 (929 ) Research and development expense, net (838 ) 2 (836 ) Gain on dispositions, net 2 2 Earnings from operations 2,024 182 2,206 Other income, net 22 4 26 Interest and debt expense (87 ) (87 ) Earnings before income taxes 1,959 186 2,145 Income tax expense (508 ) (58 ) (566 ) Net earnings $1,451 $128 $1,579 Basic earnings per share $2.36 $0.21 $2.57 Diluted earnings per share $2.34 $0.20 $2.54 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) Three months ended March 31, 2017 Reported Impact of New Standards Restated Cash flows - operating activities: Net earnings $1,451 $128 $1,579 Adjustments to reconcile net earnings to net cash provided by operating activities: Non-cash items - Share-based plans expense 50 50 Depreciation and amortization 471 (3 ) 468 Investment/asset impairment charges, net 23 23 Customer financing valuation expense 7 7 Gain on dispositions, net (2 ) (2 ) Other charges and credits, net 52 6 58 Changes in assets and liabilities - Accounts receivable (769 ) 505 (264 ) Unbilled receivables (568 ) (568 ) Advances and progress billings 1,375 1,375 Inventories (31 ) (1,460 ) (1,491 ) Other current assets (117 ) (117 ) Accounts payable 616 616 Accrued liabilities (613 ) 331 (282 ) Advances and billings in excess of related costs 249 (249 ) Income taxes receivable, payable and deferred 495 57 552 Other long-term liabilities (72 ) (72 ) Pension and other postretirement plans 10 10 Customer financing, net 232 (1 ) 231 Other (75 ) (75 ) Net cash provided by operating activities 2,094 4 2,098 Cash flows - investing activities: Property, plant and equipment additions (466 ) (466 ) Property, plant and equipment reductions 9 9 Contributions to investments (605 ) (605 ) Proceeds from investments 803 803 Other (3 ) 2 (1 ) Net cash used by investing activities (262 ) 2 (260 ) Cash flows - financing activities: New borrowings 872 872 Debt repayments (34 ) (34 ) Stock options exercised 174 174 Employee taxes on certain share-based payment arrangements (107 ) (107 ) Common shares repurchased (2,500 ) (2,500 ) Dividends paid (868 ) (868 ) Net cash used by financing activities (2,463 ) (2,463 ) Effect of exchange rate changes on cash & cash equivalents, including restricted 20 20 Net (decrease)/increase in cash & cash equivalents, including restricted (611 ) 6 (605 ) Cash & cash equivalents, including restricted*, at beginning of year 8,801 68 8,869 Cash & cash equivalents, including restricted*, at end of period $8,190 $74 8,264 Less restricted cash & cash equivalents, included in Investments 74 Cash and cash equivalents at end of period $8,190 * 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)	3 Months Ended
	Mar. 31, 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) Three months ended March 31 2018 2017 Net earnings $2,477 $1,579 Less: earnings available to participating securities 3 2 Net earnings available to common shareholders $2,474 $1,577 Basic Basic weighted average shares outstanding 590.8 614.4 Less: participating securities 0.7 0.8 Basic weighted average common shares outstanding 590.1 613.6 Diluted Basic weighted average shares outstanding 590.8 614.4 Dilutive potential common shares (1) 6.4 6.8 Diluted weighted average shares outstanding 597.2 621.2 Less: participating securities 0.7 0.8 Diluted weighted average common shares outstanding 596.5 620.4 Net earnings per share: Basic $4.19 $2.57 Diluted 4.15 2.54 (1) Diluted earnings per share includes any dilutive impact of stock options, restricted stock units, performance-based restricted stock units and performance awards.
Schedule Of Weighted Average Number Of Shares Outstanding Excluded From The Computation Of Diluted Earnings Per Share	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) Three months ended March 31 2018 2017 Performance awards 2.9 5.6 Performance-based restricted stock units 0.5 1.3

Inventories (Tables)

Inventories (Tables)	3 Months Ended
	Mar. 31, 2018
Inventory Disclosure [Abstract]
Schedule of Inventory, Current	Inventories consisted of the following: March 31 December 31 Long-term contracts in progress $1,926 $1,854 Commercial aircraft programs 53,008 52,861 Commercial spare parts, used aircraft, general stock materials and other 6,369 6,673 Total $61,303 $61,388

Customer Financing (Tables)

Customer Financing (Tables)	3 Months Ended
	Mar. 31, 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: March 31 December 31 Financing receivables: Investment in sales-type/finance leases $1,265 $1,364 Notes 934 1,022 Total financing receivables 2,199 2,386 Operating lease equipment, at cost, less accumulated depreciation of $286 and $305 808 691 Gross customer financing 3,007 3,077 Less allowance for losses on receivables (10 ) (12 ) Total $2,997 $3,065
Financing Receivable Credit Quality Indicators	Our financing receivable balances by internal credit rating category are shown below: Rating categories March 31 December 31 BBB $1,130 $1,170 BB 490 627 B 173 177 CCC 406 412 Total carrying value of financing receivables $2,199 $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: March 31 December 31 717 Aircraft ($256 and $269 accounted for as operating leases) $1,039 $1,081 747-8 Aircraft ($136 and $138 accounted for as operating leases) 481 483 737 Aircraft ($257 and $127 accounted for as operating leases) 289 161 MD-80 Aircraft (accounted for as sales-type finance leases) 235 231 757 Aircraft ($26 and $27 accounted for as operating leases) 213 217 747-400 Aircraft ($83 and $88 accounted for as operating leases) 162 170 767 Aircraft ($0 and $25 accounted for as operating leases) 16 98 777 Aircraft ($17 and $0 accounted for as operating leases) 30 14

Investments (Tables)

Investments (Tables)	3 Months Ended
	Mar. 31, 2018
Investments [Abstract]
Schedule Of Investments	Our investments, which are recorded in Short-term and other investments or Investments, consisted of the following: March 31 December 31 Equity method investments (1) $1,203 $1,214 Time deposits 108 613 Available for sale debt instruments 478 490 Restricted cash & cash equivalents (2) 70 74 Equity and other investments 45 48 Total $1,904 $2,439 (1) Dividends received were $88 and $96 for the three months ended March 31, 2018 and 2017 . (2) Reflects amounts restricted in support of our workers’ compensation programs, employee benefit programs, and insurance premiums.

Commitments And Contingencies (

Commitments And Contingencies (Tables)	3 Months Ended
	Mar. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Environmental	The following table summarizes environmental remediation activity during the three months ended March 31, 2018 and 2017 . 2018 2017 Beginning balance – January 1 $524 $562 Reductions for payments made (7 ) (11 ) Changes in estimates 22 (26 ) Ending balance – March 31 $539 $525
Product Warranties	The following table summarizes product warranty activity recorded during the three months ended March 31, 2018 and 2017 . 2018 2017 Beginning balance – January 1 $1,211 $1,414 Additions for current year deliveries 70 70 Reductions for payments made (32 ) (74 ) Changes in estimates (101 ) (65 ) Ending balance – March 31 $1,148 $1,345
Financing Commitments	The estimated earliest potential funding dates for these commitments as of March 31, 2018 are as follows: Total April through December 2018 $1,354 2019 2,960 2020 1,699 2021 1,632 2022 994 Thereafter 1,399 $10,038

Arrangements With Off-Balance41

Arrangements With Off-Balance Sheet Risk (Tables)	3 Months Ended
	Mar. 31, 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 March 31 December 31 March 31 December 31 March 31 December 31 Contingent repurchase commitments $1,527 $1,605 $1,527 $1,605 $9 Indemnifications to ULA: Contributed Delta program launch inventory 67 72 Contract pricing 261 261 7 7 Other Delta contracts 191 191 Credit guarantees 117 109 57 55 13 16

Postretirement Plans (Tables)

Postretirement Plans (Tables)	3 Months Ended
	Mar. 31, 2018
Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Net Periodic Benefit Cost	The components of net periodic benefit cost for the three months ended March 31 were as follows: Pension Other Postretirement Benefits Three months ended March 31 2018 2017 2018 2017 Service cost $108 $101 $24 $26 Interest cost 695 748 49 57 Expected return on plan assets (1,002 ) (961 ) (2 ) (2 ) Amortization of prior service credits (14 ) (10 ) (32 ) (34 ) Recognized net actuarial loss/(gain) 282 201 (3 ) 3 Settlement/curtailment/other losses 1 Net periodic benefit cost $69 $80 $36 $50 Net periodic benefit cost included in Earnings from operations $82 $131 $22 $28 Net periodic benefit cost included in Other income, net (42 ) (34 ) 24 30 Net periodic benefit cost included in Earnings before income taxes $40 $97 $46 $58

Shareholders' Equity (Tables)

Shareholders' Equity (Tables)	3 Months Ended
	Mar. 31, 2018
Equity [Abstract]
Accumulated other comprehensive income	Changes in Accumulated other comprehensive loss (AOCI) by component for the three months ended March 31, 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 (loss)/income before reclassifications 34 1 52 1 88 Amounts reclassified from AOCI 16 104 (2) 120 Net current period Other comprehensive (loss)/income 34 1 68 105 208 Balance at March 31, 2017 ($109 ) ($1 ) ($59 ) ($13,246 ) ($13,415 ) Balance at January 1, 2018 ($15 ) ($2 ) $54 ($16,410 ) ($16,373 ) Other comprehensive (loss)/income before reclassifications 27 2 (2 ) (3 ) 24 Amounts reclassified from AOCI 4 183 (2) 187 Net current period Other comprehensive income 27 2 2 180 211 Balance at March 31, 2018 $12 $— $56 ($16,230 ) ($16,162 ) (1) Net of tax. (2) Primarily relates to amortization of actuarial losses for the three months ended March 31, 2018 and 2017 totaling $219 and $132 (net of tax of ($60) and ($72) ). These are included in the net periodic pension cost.

Derivative Financial Instrume44

Derivative Financial Instruments (Tables)	3 Months Ended
	Mar. 31, 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 March 31 December 31 March 31 December 31 March 31 December 31 Derivatives designated as hedging instruments: Foreign exchange contracts $3,141 $2,930 $138 $131 ($55 ) ($63 ) Interest rate contracts 125 125 3 3 Commodity contracts 35 56 4 4 (6 ) (6 ) Derivatives not receiving hedge accounting treatment: Foreign exchange contracts 270 406 14 16 (4 ) (5 ) Commodity contracts 676 563 Total derivatives $4,247 $4,080 $159 $154 ($65 ) ($74 ) Netting arrangements (53 ) (61 ) 53 61 Net recorded balance $106 $93 ($12 ) ($13 ) (1) Notional amounts represent the gross contract/notional amount of the derivatives outstanding.
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: Three months ended March 31 2018 2017 Effective portion recognized in Other comprehensive income, net of taxes: Foreign exchange contracts ($2 ) $56 Commodity contracts (4 ) Effective portion reclassified out of Accumulated other comprehensive loss into earnings, net of taxes: Foreign exchange contracts (4 ) (15 ) Commodity contracts (1 ) Forward points recognized in Other income, net: Foreign exchange contracts 6 1 Undesignated derivatives recognized in Other income, net: Foreign exchange contracts 3 5

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 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. March 31, 2018 December 31, 2017 Total Level 1 Level 2 Total Level 1 Level 2 Assets Money market funds $1,983 $1,983 $1,582 $1,582 Available-for-sale debt investments: Commercial paper 126 $126 70 $70 Corporate notes 340 340 382 382 U.S. government agencies 33 33 47 47 Other equity investments 17 17 18 18 Derivatives 106 106 93 93 Total assets $2,605 $2,000 $605 $2,192 $1,600 $592 Liabilities Derivatives ($12 ) ($12 ) ($13 ) ($13 ) Total liabilities ($12 ) ($12 ) ($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 three months ended March 31 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 $20 ($8 ) $31 ($11 ) Investments (12 ) 1 (11 ) Property, plant and equipment 9 (1 ) Total $20 ($20 ) $41 ($23 )
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 three months ended March 31, 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 $20 Market approach Aircraft value publications $20 - $32 (1) Median $23 Aircraft condition adjustments ($3) - $0 (2) Net ($3) (1) The range represents the sum of the highest and lowest values for all aircraft subject to fair value measurement, according to the third party aircraft valuation publications that we use in our valuation process. (2) The negative amount represents the sum for all aircraft subject to fair value measurement, of all downward adjustments based on consideration of individual aircraft attributes and condition. The positive amount represents the sum of all such upward adjustments.
Fair Values And Related Carrying Values Of Financial Instruments	The fair values and related carrying values of financial instruments that are not required to be remeasured at fair value on the Condensed Consolidated Statements of Financial Position were as follows: March 31, 2018 Carrying Amount Total Fair Value Level 1 Level 2 Level 3 Assets Notes receivable, net $934 $956 $956 Liabilities Debt, excluding capital lease obligations and commercial paper (11,719 ) (12,943 ) (12,848 ) ($95 ) 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 Informati46

Segment and Revenue Information (Tables)	3 Months Ended
	Mar. 31, 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. Three months ended March 31 2018 2017 Share-based plans ($18 ) ($21 ) Deferred compensation (29 ) (50 ) Amortization of previously capitalized interest (25 ) (24 ) Eliminations and other unallocated items (239 ) (126 ) Unallocated items, eliminations and other ($311 ) ($221 ) Pension FAS/CAS service cost adjustment $283 $262 Postretirement FAS/CAS service cost adjustment 82 84 FAS/CAS service cost adjustment $365 $346
Reconciliation of Assets from Segment to Consolidated	Segment assets are summarized in the table below: March 31 December 31 Commercial Airplanes $64,846 $64,647 Defense, Space & Security 19,460 18,476 Global Services 12,636 12,491 Boeing Capital 3,007 3,156 Unallocated items, eliminations and other 13,600 13,592 Total $113,549 $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) Three months ended March 31 Revenue from contracts with customers: 2018 2017 Europe $3,199 $2,132 China 2,047 1,179 Asia, other than China 1,731 1,235 Middle East 461 2,398 Other 1,494 1,058 Total non-U.S. revenues 8,932 8,002 United States 4,339 4,421 Total revenues from contracts with customers 13,271 12,423 Intersegment revenues, eliminated on consolidation 381 530 Total segment revenues $13,652 $12,953 Revenue recognized on fixed price contracts 100 % 100 %
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) Three months ended March 31 2018 2017 Revenue from contracts with customers: U.S. customers $4,226 $3,974 Non U.S. customers (1) 1,536 1,138 Total segment revenue from contracts with customers $5,762 $5,112 Revenue recognized over time 98 % 96 % Revenue recognized on fixed price contracts 67 % 64 % Revenue from the U.S. government (1) 87 % 87 % (1) Includes revenues earned from foreign military sales through the U.S. government.
Global Services [Member]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue	BGS revenues consist of the following: (Dollars in millions) Three months ended March 31 2018 2017 Revenue from contracts with customers: Commercial $2,102 $1,848 Government 1,782 1,792 Total revenues from contracts with customers 3,884 3,640 Intersegment revenues eliminated on consolidation 59 13 Total segment revenues $3,943 $3,653 Revenue recognized at a point in time 54 % 48 % Revenue recognized on fixed price contracts 88 % 88 % Revenue from the U.S. government (1) 37 % 42 % (1) Includes revenues earned from foreign military sales through the U.S. government.

Summary Of Business Segment D47

Summary Of Business Segment Data (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Segment Reporting Information [Line Items]
Revenues	$ 23,382	$ 21,961
Earnings from operations	2,875	2,206
Other income, net	66	26
Interest and debt expense	(102)	(87)
Earnings before income taxes	2,839	2,145
Income tax expense	(362)	(566)
Net earnings	2,477	1,579
Operating Segments [Member]
Segment Reporting Information [Line Items]
Earnings from operations	2,821	2,081
Operating Segments [Member] | Commercial Airplanes [Member]
Segment Reporting Information [Line Items]
Revenues	13,652	12,953
Earnings from operations	1,508	870
Operating Segments [Member] | Defense, Space & Security [Member]
Segment Reporting Information [Line Items]
Revenues	5,762	5,112
Earnings from operations	649	549
Operating Segments [Member] | Global Services [Member]
Segment Reporting Information [Line Items]
Revenues	3,943	3,653
Earnings from operations	644	623
Operating Segments [Member] | Boeing Capital [Member]
Segment Reporting Information [Line Items]
Revenues	65	92
Earnings from operations	20	39
Unallocated items, eliminations and other [Member]
Segment Reporting Information [Line Items]
Revenues	(40)	151
Earnings from operations	(311)	(221)
FAS/CAS Service Cost Adjustment	$ 365	$ 346

Basis Of Presentation (Details)

Basis Of Presentation (Details) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended		12 Months Ended
		Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Basis of Presentation [Line Items]
Net earnings		$ 2,477	$ 1,579
Increase/(Decrease) in revenue due to change in accounting estimate		117	207
Increase/(Decrease) in Earnings from operations due to change in accounting estimate		$ 78	$ 108
Change in Earnings Per Share Due to Change in Accounting Estimate		$ 0.11	$ 0.13
Retained earnings		$ 52,095		$ 49,618
Accumulated Other Comprehensive Income (Loss), Net of Tax	[1]	(16,162)	$ (13,415)	(16,373)	$ (13,623)
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			128
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]
Basis of Presentation [Line Items]
Net earnings		$ 2,477	$ 1,579
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 Sta49

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		12 Months Ended
		Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Statement [Abstract]
Sales of products		$ 20,820	$ 19,367
Sales of services		2,562	2,594
Revenues		23,382	21,961
Cost of Goods Sold		(16,816)	(16,062)
Cost of Services		(1,992)	(1,998)
Financial Services Costs		(16)	(13)
Cost of Revenue		(18,824)	(18,073)
Gross Profit		4,558	3,888
Income from operating investments, net		74	81
General and Administrative Expense		(997)	(929)
Research and Development Expense		(764)	(836)
(Gain)/Loss on dispositions, net		(4)	(2)
Earnings from operations		2,875	2,206
Other income, net		66	26
Interest and Debt Expense		(102)	(87)
Earnings before income taxes		2,839	2,145
Income tax expense		(362)	(566)
Net earnings		$ 2,477	$ 1,579
Earnings Per Share, Basic		$ 4.19	$ 2.57
Earnings Per Share, Diluted		$ 4.15	$ 2.54
Assets [Abstract]
Short-term and other investments		$ 656		$ 1,179
Accounts receivable, net		2,802		2,894
Unbilled receivables, net		9,822		8,194
Current portion of customer financing, net		244		309
Inventories		61,303		61,388
Other current assets		2,481		2,417
Assets, Current		86,543		85,194
Customer financing, net		2,753		2,756
Property, plant and equipment, net		12,628		12,672
Goodwill		5,558		5,559
Acquired intangible assets, net		2,525		2,573
Deferred income taxes		325		321
Investments		1,248		1,260
Other assets, net of accumulated amortization		1,969		2,027
Assets		113,549		112,362
Liabilities and equity
Accounts payable		12,613		12,202
Accrued liabilities		10,983		13,069
Advances and billings in excess of related costs
Advances and progress billings		49,955		48,042
Short-term debt and current portion of long-term debt		1,981		1,335
Total current liabilities		75,532		74,648
Deferred income taxes		2,001		2,188
Accrued retiree health care		5,494		5,545
Accrued pension plan liability, net		16,279		16,471
Other long-term liabilities		2,474		2,015
Long-term debt		10,471		9,782
Common stock		5,061		5,061
Additional paid-in capital		6,624		6,804
Treasury stock, at cost		46,396		43,454
Retained earnings		52,095		49,618
Accumulated other comprehensive loss	[1]	(16,162)	$ (13,415)	(16,373)	$ (13,623)
Total shareholders’ equity		1,222		1,656
Noncontrolling interests		76		57
Total equity		1,298	1,323	1,713	1,917
Total liabilities and equity		113,549		112,362
Cash flows - operation activities:
Net earnings		2,477	1,579
Non-cash items -
Share-based plans expense		45	50
Depreciation and amortization		501	468
Asset Impairment Charges		20	23
Customer financing valuation (benefit)/expense		(1)	7
Gain on dispositions, net		4	2
Other charges and credits, net		60	58
Changes in assets and liabilities -
Accounts receivable		92	(264)
Unbilled receivables		(1,628)	(568)
Advances and progress billings		1,917	1,375
Inventories		283	(1,491)
Other current assets		(103)	(117)
Accounts payable		591	616
Accrued liabilities		(1,337)	(282)
Advances and billings in excess of related costs
Income taxes receivable, payable and deferred		348	552
Other long-term liabilities		(243)	(72)
Pension and other postretirement plans		(50)	10
Customer financing, net		44	231
Other		124	(75)
Net Cash Provided by (Used in) Operating Activities		3,136	2,098
Cash flows - investing activities:
Payments to Acquire Property, Plant, and Equipment		(394)	(466)
Property, plant and equipment reductions		27	9
Payments to Acquire Investments		(249)	(605)
Proceeds from investments		752	803
Other		3	(1)
Net Cash Provided by (Used in) Investing Activities		119	(260)
Cash flows - financing activities:
New borrowings		2,687	872
Debt repayments		(1,371)	(34)
Stock options exercised		51	174
Employee taxes on certain share-based payment arrangements		(226)	(107)
Common shares repurchased		(3,000)	(2,500)
Dividends paid		(1,006)	(868)
Net cash used by financing activities		(2,845)	(2,463)
Effect of exchange rate changes on cash and cash equivalents, including restricted		8	20
Net increase/(decrease) in cash & cash equivalents, including restricted		418	(605)
Cash & cash equivalents, including restricted, at beginning of year		8,887	8,869	8,869
Cash & cash equivalents, including restricted, at end of period		9,305	8,264	8,887	8,869
Restricted Cash and Cash Equivalents	[2]	(70)	(74)	(74)
Cash and cash equivalents at end of period		9,235	8,190	8,813
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total equity		1,298	1,323	1,713	1,917
Common Stock [Member]
Liabilities and equity
Common stock				5,061
Total equity		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
Additional Paid-In Capital [Member]
Liabilities and equity
Additional paid-in capital				6,804
Total equity		6,624	4,604	6,804	4,762
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total equity		6,624	4,604	6,804	4,762
Treasury Stock [Member]
Liabilities and equity
Treasury stock, at cost				(43,454)
Total equity		(46,396)	(38,320)	(43,454)	(36,097)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total equity		(46,396)	(38,320)	(43,454)	(36,097)
Retained Earnings [Member]
Income Statement [Abstract]
Net earnings		2,477	1,579
Liabilities and equity
Total equity		52,095	43,333	49,618	41,754
Cash flows - operation activities:
Net earnings		2,477	1,579
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total equity		52,095	43,333	49,618	41,754
Accumulated Other Comprehensive Loss [Member]
Liabilities and equity
Total equity		(16,162)	(13,415)	(16,373)	(13,623)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total equity		(16,162)	(13,415)	(16,373)	(13,623)
Non-Controlling Interest [Member]
Liabilities and equity
Noncontrolling interests				57
Total equity		76	60	57	60
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total equity		$ 76	60	57	60
Scenario, Previously Reported [Member]
Income Statement [Abstract]
Sales of products			18,512
Sales of services			2,464
Revenues			20,976
Cost of Goods Sold			(15,363)
Cost of Services			(1,888)
Cost of Revenue			(17,264)
Gross Profit			3,712
General and Administrative Expense			(933)
Research and Development Expense			(838)
Earnings from operations			2,024
Other income, net			22
Earnings before income taxes			1,959
Income tax expense			(508)
Net earnings			$ 1,451
Earnings Per Share, Basic			$ 2.36
Earnings Per Share, Diluted			$ 2.34
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			$ 1,451
Non-cash items -
Depreciation and amortization			471
Other charges and credits, net			52
Changes in assets and liabilities -
Accounts receivable			(769)
Unbilled receivables
Advances and progress billings
Inventories			(31)
Other current assets
Accrued liabilities			(613)
Advances and billings in excess of related costs			249
Income taxes receivable, payable and deferred			495
Customer financing, net			232
Net Cash Provided by (Used in) Operating Activities			2,094
Cash flows - investing activities:
Other			(3)
Net Cash Provided by (Used in) Investing Activities			(262)
Cash flows - financing activities:
Net increase/(decrease) in cash & cash equivalents, including restricted			(611)
Cash & cash equivalents, including restricted, at beginning of year			8,801	8,801
Cash & cash equivalents, including restricted, at end of period			8,190		8,801
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total equity				412	877
Scenario, Previously Reported [Member] | Retained Earnings [Member]
Liabilities and equity
Retained earnings				45,320
Total equity					40,714
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total equity					40,714
Scenario, 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)
Scenario, Restated [Member]
Liabilities and equity
Total equity				1,713	1,917
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total equity				1,713	1,917
Scenario, Restated [Member] | Retained Earnings [Member]
Liabilities and equity
Retained earnings				49,618
Total equity					41,754
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total equity					41,754
Scenario, Restated [Member] | Accumulated Other Comprehensive Loss [Member]
Liabilities and equity
Accumulated other comprehensive loss				(16,373)
Adjustments for New Accounting Pronouncement [Member]
Income Statement [Abstract]
Sales of products			855
Sales of services			130
Revenues			985
Cost of Goods Sold			(699)
Cost of Services			(110)
Cost of Revenue			(809)
Gross Profit			176
General and Administrative Expense			4
Research and Development Expense			2
Earnings from operations			182
Other income, net			4
Earnings before income taxes			186
Income tax expense			(58)
Net earnings			$ 128
Earnings Per Share, Basic			$ 0.21
Earnings Per Share, Diluted			$ 0.20
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			$ 128
Non-cash items -
Depreciation and amortization			(3)
Other charges and credits, net			6
Changes in assets and liabilities -
Accounts receivable			505
Unbilled receivables			(568)
Advances and progress billings			1,375
Inventories			(1,460)
Other current assets			(117)
Accrued liabilities			331
Advances and billings in excess of related costs			(249)
Income taxes receivable, payable and deferred			57
Customer financing, net			(1)
Net Cash Provided by (Used in) Operating Activities			4
Cash flows - investing activities:
Other			2
Net Cash Provided by (Used in) Investing Activities			2
Cash flows - financing activities:
Net increase/(decrease) in cash & cash equivalents, including restricted			6
Cash & cash equivalents, including restricted, at beginning of year			68	68
Cash & cash equivalents, including restricted, at end of period			$ 74		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
[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
		Mar. 31, 2018	Mar. 31, 2017
Earnings Per Share [Abstract]
Net earnings		$ 2,477	$ 1,579
Undistributed Earnings (Loss) Allocated to Participating Securities, Basic		3	2
Net earnings available to common shareholders		$ 2,474	$ 1,577
Basic weighted average shares outstanding		590.8	614.4
Participating securities		0.7	0.8
Basic weighted average common shares outstanding		590.1	613.6
Basic weighted average shares outstanding		590.8	614.4
Dilutive potential common shares	[1]	6.4	6.8
Diluted weighted average shares outstanding		597.2	621.2
Participating securities		0.7	0.8
Diluted weighted average common shares outstanding		596.5	620.4
Income (Loss) from Continuing Operations, Per Basic Share		$ 4.19	$ 2.57
Income (Loss) from Continuing Operations, Per Diluted Share		$ 4.15	$ 2.54
[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 51

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
	Mar. 31, 2018	Mar. 31, 2017
Performance Awards [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares excluded from the computation of diluted earnings	2.9	5.6
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	0.5	1.3

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
Income Tax Examination [Line Items]
Effective income tax rate	12.80%	26.40%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent			21.00%	35.00%
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-based Compensation Cost, Percent	4.00%
UNITED STATES
Income Tax Examination [Line Items]
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit	$ 540
State and Local Jurisdiction [Member]
Income Tax Examination [Line Items]
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit	$ 435

Inventories (Narrative) (Detail

Inventories (Narrative) (Details) $ in Millions	Mar. 31, 2018USD ($)aircraft	Dec. 31, 2017USD ($)
Inventory [Line Items]
Long-term contracts in progress	$ 1,926	$ 1,854
Other Inventory, Gross	6,369	6,673
Airplane Program 787 [Member]
Inventory [Line Items]
Inventory, Work in Process, Gross	30,049	30,695
Amount of Deferred Costs Related to Long-term Contracts	24,690	25,358
Advances on Inventory Purchases	2,839	3,189
Unamortized Tooling	3,042	3,173
Recovered Production Costs Excess Recoverable Under Existing Firm Orders	22,034
Unrecovered Production Costs, Excess Unrecoverable under Existing Firm Orders	5,698
Airplane Program 747 [Member]
Inventory [Line Items]
Unamortized Tooling	138	151
Recovered Production Costs Excess Recoverable Under Existing Firm Orders	$ 133
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	267	284
Capitalized Precontract Costs [Member]
Inventory [Line Items]
Inventory Amount, Unpriced Change Orders for Long-term Contracts or Programs	691	933
Early Issue Sales Consideration [Member]
Inventory [Line Items]
Inventory Amount, Unpriced Change Orders for Long-term Contracts or Programs	$ 2,958	$ 2,976

Inventories (Inventory Disclosu

Inventories (Inventory Disclosure Table) (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Inventory Disclosure [Abstract]
Long-term contracts in progress	$ 1,926	$ 1,854
Commercial aircraft programs	53,008	52,861
Commercial spare parts, used aircraft, general stock materials and other	6,369	6,673
Total	$ 61,303	$ 61,388

Contracts with Customers Contra

Contracts with Customers Contracts with Customers (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Revenue from Contract with Customer [Abstract]
Unbilled receivables, net	$ 9,822		$ 8,194
Contract with Customer, Asset, Explanation of Change	primarily driven by revenue recognized at BDS in excess of billings
Advances and progress billings	$ 49,955		$ 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	$ 6,453	$ 5,411

Customer Financing (Narrative)

Customer Financing (Narrative) (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Customer Financing [Line Items]
Financing Receivable, Individually Evaluated for Impairment	$ 417	$ 422
Impaired Financing Receivable, Recorded Investment	$ 406	$ 411
B Credit Rating [Member]
Customer Financing [Line Items]
Percentage of Credit Default Rates Applied to Customers	22.90%
BB Credit Rating [Member]
Customer Financing [Line Items]
Percentage of Credit Default Rates Applied to Customers	7.40%
BBB Credit Rating [Member]
Customer Financing [Line Items]
Percentage of Credit Default Rates Applied to Customers	0.80%

Customer Financing (Schedule Of

Customer Financing (Schedule Of Customer Financing) (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Customer Financing [Abstract]
Investment in sales-type/finance leases	$ 1,265	$ 1,364
Notes	934	1,022
Total financing receivables	2,199	2,386
Operating lease equipment, at cost, less accumulated depreciation of $286 and $305	808	691
Gross customer financing	3,007	3,077
Less allowance for losses on receivables	(10)	(12)
Total	2,997	3,065
Operating lease equipment- Accumulated depreciation	$ 286	$ 305

Customer Financing (Financing R

Customer Financing (Financing Receivable Credit Quality Indicators) (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment [Line Items]
Carrying value of financing receivables	$ 2,199	$ 2,386
BBB Credit Rating [Member]
Financing Receivable, Recorded Investment [Line Items]
Carrying value of financing receivables	1,130	1,170
BB Credit Rating [Member]
Financing Receivable, Recorded Investment [Line Items]
Carrying value of financing receivables	490	627
B Credit Rating [Member]
Financing Receivable, Recorded Investment [Line Items]
Carrying value of financing receivables	173	177
CCC Credit Rating [Member]
Financing Receivable, Recorded Investment [Line Items]
Carrying value of financing receivables	$ 406	$ 412

Customer Financing (Carrying Va

Customer Financing (Carrying Values Related to Major Aircraft Concentrations) (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Customer Financing [Line Items]
Customer financing carrying value	$ 3,007	$ 3,077
Operating leases	808	691
B-717 [Member]
Customer Financing [Line Items]
Customer financing carrying value	1,039	1,081
Operating leases	256	269
B747-8 [Member]
Customer Financing [Line Items]
Customer financing carrying value	481	483
Operating leases	136	138
B-737 [Member]
Customer Financing [Line Items]
Customer financing carrying value	289	161
Operating leases	257	127
MD 80 Aircraft [Member]
Customer Financing [Line Items]
Customer financing carrying value	235	231
B-757 [Member]
Customer Financing [Line Items]
Customer financing carrying value	213	217
Operating leases	26	27
B747-400 aircraft [Member]
Customer Financing [Line Items]
Customer financing carrying value	162	170
Operating leases	83	88
B-767 [Member]
Customer Financing [Line Items]
Customer financing carrying value	16	98
Operating leases		25
B-777 [Member]
Customer Financing [Line Items]
Customer financing carrying value	30	14
Operating leases	$ 17

Investments (Schedule Of Invest

Investments (Schedule Of Investments) (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Investments [Abstract]
Equity method investments	[1]	$ 1,203		$ 1,214
Time deposits		108		613
Available-for-sale Securities, Debt Securities		478		490
Restricted Cash and Cash Equivalents	[2]	70	$ 74	74
Equity and other investments		45		48
Total		1,904		$ 2,439
Dividends received		$ 88	$ 96
[1]	Dividends received were $88 and $96 for the three months ended March 31, 2018 and 2017.
[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	Mar. 31, 2018	Dec. 31, 2017
Other Assets [Line Items]
Other assets, net of accumulated amortization	$ 1,969	$ 2,027
Spirit Aerosystems [Member]
Other Assets [Line Items]
Loss Contingency, Receivable	137	137
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 Contingencies62

Commitments And Contingencies (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2016	Dec. 31, 2017	Jan. 27, 2017	Dec. 31, 2011
Commitments And Contingencies [Line Items]
Loss Contingency, Range of Possible Loss, Portion Not Accrued	$ 820		$ 868
Letters of Credit Outstanding, Amount	3,665		3,708
Financing Commitment [Member]
Commitments And Contingencies [Line Items]
Other Commitment	10,038		10,221
Total Contractual Trade-In Commitment [Member] | Commercial Aircraft Commitments [Member]
Commitments And Contingencies [Line Items]
Other Commitment	1,483		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	385		155
Fair Value of Trade In Value of Aircraft [Member] | Commercial Aircraft Commitments [Member]
Commitments And Contingencies [Line Items]
Other Commitment	$ 364		$ 155
Minimum [Member]
Commitments And Contingencies [Line Items]
Trade-In Commitment Expiration Date	2,018
Maximum [Member]
Commitments And Contingencies [Line Items]
Trade-In Commitment Expiration Date	2,026
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	370
KC-46A Tanker [Member] | Potential Termination Liabilities [Member]
Commitments And Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss	$ 1,330
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				$ 2,100

Commitments And Contingencies63

Commitments And Contingencies (Environmental) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Environmental [Roll Forward]
Beginning balance – January 1	$ 524	$ 562
Reductions for payments made	(7)	(11)
Changes in estimates	22	(26)
Ending balance – March 31	$ 539	$ 525

Commitments And Contingencies64

Commitments And Contingencies (Product Warranties) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Product Warranties [Roll Forward]
Beginning balance – January 1	$ 1,211	$ 1,414
Additions for current year deliveries	70	70
Reductions for payments made	(32)	(74)
Changes in estimates	(101)	(65)
Ending balance – March 31	$ 1,148	$ 1,345

Commitments And Contingencies65

Commitments And Contingencies (Financing Commitments) (Details) - Financing Commitment [Member] - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Financing Commitments [Line Items]
April through December 2018	$ 1,354
2,018	2,960
2,019	1,699
2,020	1,632
2,021	994
Thereafter	1,399
Total	$ 10,038	$ 10,221

Arrangements With Off-Balance66

Arrangements With Off-Balance Sheet Risk (Narrative) (Details) $ in Millions	1 Months Ended		225 Months Ended
	Dec. 31, 2011USD ($)	Jun. 30, 2011USD ($)	Dec. 31, 2036	Mar. 31, 2018USD ($)satellites	Dec. 31, 2017USD ($)
Guarantees [Line Items]
Number of satellite missions | satellites				4
Additional potentially unrecoverable deferred production costs	$ 114	$ 271
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
Contributed Delta launch program inventories consumed by ULA				1,293
Revenues and cost of sales recorded under inventory supply agreement				1,545
Payments received under inventory supply agreement				1,740
Payments made under inventory supply agreement				48
Contributed Delta Program Launch Inventory [Member] | ULA [Member]
Guarantees [Line Items]
Maximum Potential Payments				67	$ 72
Contract Pricing [Member] | ULA [Member]
Guarantees [Line Items]
Maximum Potential Payments				261	261
Carrying Amount of Liabilities				$ 7	7
Indemnification Agreement [Member]
Guarantees [Line Items]
Number of satellite missions | satellites				3
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				191	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				117	109
Carrying Amount of Liabilities				13	$ 16
Guarantor Obligations, Term			2,036
Maximum [Member] | Indemnification Agreement [Member]
Guarantees [Line Items]
Loss Contingency, Estimate of Possible Loss				$ 280

Arrangements With Off-Balance67

Arrangements With Off-Balance Sheet Risk (Third Party Guarantees) (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Contingent Repurchase Commitments [Member]
Guarantor Obligations [Line Items]
Maximum Potential Payments	$ 1,527	$ 1,605
Estimated Proceeds from Collateral or Recourse	1,527	1,605
Carrying Amount of Liabilities		9
Credit Guarantee [Member]
Guarantor Obligations [Line Items]
Maximum Potential Payments	117	109
Estimated Proceeds from Collateral or Recourse	57	55
Carrying Amount of Liabilities	13	16
ULA [Member] | Contributed Delta Program Launch Inventory [Member]
Guarantor Obligations [Line Items]
Maximum Potential Payments	67	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	191	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
	Mar. 31, 2018	Mar. 31, 2017
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 108	$ 101
Interest cost	695	748
Expected return on plan assets	(1,002)	(961)
Amortization of prior service credits	(14)	(10)
Recognized net actuarial loss/(gain)	282	201
Settlement/curtailment/other losses		1
Net periodic benefit cost	69	80
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	24	26
Interest cost	49	57
Expected return on plan assets	(2)	(2)
Amortization of prior service credits	(32)	(34)
Recognized net actuarial loss/(gain)	(3)	3
Settlement/curtailment/other losses
Net periodic benefit cost	36	50
Operating Income (Loss) [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Net periodic benefit cost included in Earnings from operations	82	131
Operating Income (Loss) [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Net periodic benefit cost included in Earnings from operations	22	28
Other Income [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Net periodic benefit cost included in Earnings from operations	(42)	(34)
Other Income [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Net periodic benefit cost included in Earnings from operations	24	30
Operating Income (Loss) Before Taxes [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Net periodic benefit cost included in Earnings from operations	40	97
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	$ 46	$ 58

Share-Based Compensation And 70

Share-Based Compensation And Other Compensation Arrangements (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	Feb. 26, 2018	Mar. 31, 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		$ 375

Shareholders' Equity (Accumulat

Shareholders' Equity (Accumulated other comprehensive income) (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2018	Mar. 31, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	[1]	$ (16,373)	$ (13,623)
OCI before reclassifications	[1]	24	88
Amounts reclassified from AOCI	[1]	187	120
Net current period Other comprehensive income/(loss)	[1]	211	208
Ending Balance	[1]	(16,162)	(13,415)
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax		219	132
Amortization of actuarial losses included in net periodic pension cost, tax		(60)	(72)
Currency Translation Adjustments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance		(15)	(143)
OCI before reclassifications		27	34
Amounts reclassified from AOCI
Net current period Other comprehensive income/(loss)		27	34
Ending Balance		12	(109)
Unrealized Gains and Losses on Certain Investments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance		(2)	(2)
OCI before reclassifications		2	1
Amounts reclassified from AOCI
Net current period Other comprehensive income/(loss)		2	1
Ending Balance		0	(1)
Unrealized Gains and Losses on Derivative Instruments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance		54	(127)
OCI before reclassifications		(2)	52
Amounts reclassified from AOCI		4	16
Net current period Other comprehensive income/(loss)		2	68
Ending Balance		56	(59)
Defined Benefit Pension Plans and Other Postretirement Benefits [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance		(16,410)	(13,351)
OCI before reclassifications		(3)	1
Amounts reclassified from AOCI	[2]	183	104
Net current period Other comprehensive income/(loss)		180	105
Ending Balance		$ (16,230)	$ (13,246)
[1]	Net of tax.
[2]	Primarily relates to amortization of actuarial losses for the three months ended March 31, 2018 and 2017 totaling $219 and $132 (net of tax of ($60) and ($72)). These are included in the net periodic pension cost.

Derivative Financial Instrume72

Derivative Financial Instruments (Narrative) (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2021	Mar. 31, 2018
Derivative [Line Items]
Cash flow hedge gain/(loss) to be reclassified during the next 12 months, pre-tax			$ (14)
Fair value of foreign exchange and commodity contracts that have credit-risk-related contingent features that are in a net liability position			$ 15
Foreign Exchange Contract [Member] | Maximum [Member]
Derivative [Line Items]
Derivative, Latest Maturity Date	Dec. 31, 2024
Commodity Contract [Member] | Maximum [Member]
Derivative [Line Items]
Derivative, Latest Maturity Date		Dec. 31, 2021

Derivative Financial Instrume73

Derivative Financial Instruments (Schedule of Derivative Instruments, Notional Amounts and Fair Values) (Details) - USD ($) $ in Millions		Mar. 31, 2018	Dec. 31, 2017
Derivative [Line Items]
Notional amounts	[1]	$ 4,247	$ 4,080
Other Assets		159	154
Accrued Liabilities		(65)	(74)
Netting Arrangements, Other Assets		(53)	(61)
Netting Arrangements, Accrued Liabilities		53	61
Net Recorded balance, Other Assets		106	93
Net Recorded balance, Accrued Liabilities		(12)	(13)
Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member]
Derivative [Line Items]
Notional amounts		3,141	2,930
Other Assets		138	131
Accrued Liabilities		(55)	(63)
Designated as Hedging Instrument [Member] | Interest Rate Contract [Member]
Derivative [Line Items]
Notional amounts		125	125
Other Assets		3	3
Designated as Hedging Instrument [Member] | Commodity Contract [Member]
Derivative [Line Items]
Notional amounts		35	56
Other Assets		4	4
Accrued Liabilities		(6)	(6)
Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member]
Derivative [Line Items]
Notional amounts		270	406
Other Assets		14	16
Accrued Liabilities		(4)	(5)
Not Designated as Hedging Instrument [Member] | Commodity Contract [Member]
Derivative [Line Items]
Notional amounts		$ 676	$ 563
[1]	Notional amounts represent the gross contract/notional amount of the derivatives outstanding.

Derivative Financial Instrume74

Derivative Financial Instruments (Schedule Of Derivative Instruments, Gains/(Losses)) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Derivative [Line Items]
Effective portion recognized in other comprehensive income/(loss), net of taxes	$ (2)	$ 52
Effective portion reclassified out of Accumulated other comprehensive income/(loss) into earnings, net of taxes	(4)	(16)
Foreign Exchange Contract [Member]
Derivative [Line Items]
Effective portion recognized in other comprehensive income/(loss), net of taxes	(2)	56
Effective portion reclassified out of Accumulated other comprehensive income/(loss) into earnings, net of taxes	(4)	(15)
Forward points recognized in other income (expense), net	6	1
Undesignated derivatives recognized in Other income/(expense), net	3	5
Commodity Contract [Member]
Derivative [Line Items]
Effective portion recognized in other comprehensive income/(loss), net of taxes		(4)
Effective portion reclassified out of Accumulated other comprehensive income/(loss) into earnings, net of taxes		$ (1)

Fair Value Measurements Fair Va

Fair Value Measurements Fair Value, Assets and Liabilities Measured on Recurring Basis (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Debt Securities	$ 478	$ 490
Derivatives, Assets	106	93
Derivatives, Liabilities	(12)	(13)
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market funds	1,983	1,582
Commercial Paper, at Carrying Value	126	70
Available-for-sale Securities, Debt Securities	340	382
Available for Sale Securities, Government Agencies	33	47
Investments, Fair Value Disclosure	17	18
Derivatives, Assets	106	93
Total assets	2,605	2,192
Derivatives, Liabilities	(12)	(13)
Total liabilities	(12)	(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	1,983	1,582
Investments, Fair Value Disclosure	17	18
Total assets	2,000	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	126	70
Available-for-sale Securities, Debt Securities	340	382
Available for Sale Securities, Government Agencies	33	47
Derivatives, Assets	106	93
Total assets	605	592
Derivatives, Liabilities	(12)	(13)
Total liabilities	$ (12)	$ (13)

Fair Value Measurements Fair 76

Fair Value Measurements Fair Value, Assets Measured on Nonrecurring Basis Using Unobservable Inputs (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Nonrecurring fair value losses	$ (20)	$ (23)
Fair Value Measurements Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Nonrecurring fair value losses	(20)	(23)
Fair Value Measurements Nonrecurring [Member] | Operating Lease Equipment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Nonrecurring fair value losses	(8)	(11)
Fair Value Measurements Nonrecurring [Member] | Property, Plant and Equipment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Nonrecurring fair value losses		(1)
Fair Value Measurements Nonrecurring [Member] | Investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Nonrecurring fair value losses	(12)	(11)
Fair Value Measurements Nonrecurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Fair Value	20	41
Fair Value Measurements Nonrecurring [Member] | Level 3 [Member] | Market Approach Valuation Technique [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Operating Lease Equipment	20	31
Fair Value Measurements Nonrecurring [Member] | Level 3 [Member] | Income Approach Valuation Technique [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Property, Plant, and Equipment, Fair Value		9
Investments, Fair Value Disclosure		$ 1

Fair Value, Assets Measured On

Fair Value, Assets Measured On Nonrecurring Basis, Valuation Techniques (Details) - USD ($) $ in Millions		Mar. 31, 2018	Mar. 31, 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		$ 23
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]	20
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]	32
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		(3)
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]	(3)
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]	0
Fair Value Measurements Nonrecurring [Member] | Level 3 [Member] | Market Approach Valuation Technique [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Operating Lease Equipment		$ 20	$ 31
[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 78

Fair Value Measurements Fair Values And Related Carrying Values of Financial Instruments (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Notes receivable, Fair value	$ 956	$ 1,046
Debt, excluding capital lease obligations, Fair value	(12,943)	(11,923)
Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Notes receivable, Fair value	956	1,046
Debt, excluding capital lease obligations, Fair value	(12,848)	(11,823)
Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt, excluding capital lease obligations, Fair value	(95)	(100)
Carrying Amount [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Notes receivable, net Carrying amount	934	1,022
Debt, excluding capital lease obligations, Carrying amount	$ (11,719)	$ (10,380)

Segment and Revenue Informati79

Segment and Revenue Information Segment and Revenue Information (Narrative) (Details) $ in Millions	3 Months Ended
	Mar. 31, 2018USD ($)segments	Mar. 31, 2017
Segment Reporting Information [Line Items]
Number of Reportable Segments | segments	4
Revenue, Remaining Performance Obligation | $	$ 486,245
Fiscal Year 2019 [Member]
Segment Reporting Information [Line Items]
Revenue, Remaining Performance Obligation, Percent Recognized	30.00%
Fiscal Year 2022 [Member]
Segment Reporting Information [Line Items]
Revenue, Remaining Performance Obligation, Percent Recognized	71.00%
Transferred at Point in Time [Member] | Operating Segments [Member] | Commercial Airplanes Segment [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, excluding assessed tax, Percentage	95.00%	93.00%

Segment and Revenue Informati80

Segment and Revenue Information Segment and Revenue Information (Schedule of Revenue Disaggregation) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Disaggregation of Revenue [Line Items]
Revenues	$ 23,382	$ 21,961
Operating Segments [Member] | Commercial Airplanes Segment [Member]
Disaggregation of Revenue [Line Items]
Revenues	13,652	12,953
Operating Segments [Member] | Commercial Airplanes Segment [Member] | External Customers [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 13,271	$ 12,423
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%
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	95.00%	93.00%
Operating Segments [Member] | Commercial Airplanes Segment [Member] | Non-US [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 8,932	$ 8,002
Operating Segments [Member] | Commercial Airplanes Segment [Member] | Europe [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	3,199	2,132
Operating Segments [Member] | Commercial Airplanes Segment [Member] | China
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	2,047	1,179
Operating Segments [Member] | Commercial Airplanes Segment [Member] | Asia Other Than China [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	1,731	1,235
Operating Segments [Member] | Commercial Airplanes Segment [Member] | Middle East [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	461	2,398
Operating Segments [Member] | Commercial Airplanes Segment [Member] | Other [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	1,494	1,058
Operating Segments [Member] | Commercial Airplanes Segment [Member] | UNITED STATES
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	4,339	4,421
Operating Segments [Member] | Defense, Space & Security [Member]
Disaggregation of Revenue [Line Items]
Revenues	$ 5,762	$ 5,112
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	87.00%	87.00%
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	67.00%	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	98.00%	96.00%
Operating Segments [Member] | Defense, Space & Security [Member] | Non-US [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 1,536	$ 1,138
Operating Segments [Member] | Defense, Space & Security [Member] | UNITED STATES
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	4,226	3,974
Operating Segments [Member] | Global Services [Member]
Disaggregation of Revenue [Line Items]
Revenues	3,943	3,653
Operating Segments [Member] | Global Services [Member] | Commercial Customers [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	2,102	1,848
Operating Segments [Member] | Global Services [Member] | Government Customers [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	1,782	1,792
Operating Segments [Member] | Global Services [Member] | External Customers [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 3,884	$ 3,640
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	37.00%	42.00%
Operating Segments [Member] | Global Services [Member] | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, excluding assessed tax, Percentage	88.00%	88.00%
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	54.00%	48.00%
Intersegment Eliminations [Member] | Commercial Airplanes Segment [Member]
Disaggregation of Revenue [Line Items]
Revenues	$ 381	$ 530
Intersegment Eliminations [Member] | Global Services [Member]
Disaggregation of Revenue [Line Items]
Revenues	$ 59	$ 13

Schedule Of Unallocated Items a

Schedule Of Unallocated Items and Eliminations (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Segment Reporting Information [Line Items]
Share-based plans	$ (45)	$ (50)
Unallocated items, eliminations and other [Member]
Segment Reporting Information [Line Items]
Share-based plans	(18)	(21)
Deferred compensation	(29)	(50)
Amortization of previously capitalized interest	(25)	(24)
Eliminations and other unallocated items	(239)	(126)
Unallocated items, eliminations and other	(311)	(221)
FAS/CAS Service Cost Adjustment	365	346
Unallocated items, eliminations and other [Member] | Pension Plans, Defined Benefit [Member]
Segment Reporting Information [Line Items]
FAS/CAS Service Cost Adjustment	283	262
Unallocated items, eliminations and other [Member] | Other Postretirement Benefit Plan, Defined Benefit [Member]
Segment Reporting Information [Line Items]
FAS/CAS Service Cost Adjustment	$ (82)	$ 84

Reconciliation of Assets from S

Reconciliation of Assets from Segment to Consolidated (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Assets	$ 113,549	$ 112,362
Operating Segments [Member] | Commercial Airplanes [Member]
Segment Reporting Information [Line Items]
Assets	64,846	64,647
Operating Segments [Member] | Defense, Space & Security [Member]
Segment Reporting Information [Line Items]
Assets	19,460	18,476
Operating Segments [Member] | Global Services [Member]
Segment Reporting Information [Line Items]
Assets	12,636	12,491
Operating Segments [Member] | Boeing Capital [Member]
Segment Reporting Information [Line Items]
Assets	3,007	3,156
Unallocated items, eliminations and other [Member]
Segment Reporting Information [Line Items]
Assets	$ 13,600	$ 13,592