General Dynamics (GD) 10-Q 25 Jul 18 2018 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information	6 Months Ended
	Jul. 01, 2018shares
Document and Entity Information [Abstract]
Entity Registrant Name	GENERAL DYNAMICS CORPORATION
Entity Central Index Key	40,533
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Jul. 1, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q2
Amendment Flag	false
Entity Common Stock, Shares Outstanding	296,281,432
Trading Symbol	GD

Consolidated Statement of Earni

Consolidated Statement of Earnings (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 01, 2018	Jul. 02, 2017	Jul. 01, 2018	Jul. 02, 2017
Revenue:
Products	$ 4,754	$ 4,666	$ 9,330	$ 9,133
Services	4,432	3,009	7,391	5,983
Revenue, total	9,186	7,675	16,721	15,116
Operating costs and expenses:
Products	(3,702)	(3,597)	(7,248)	(7,035)
Services	(3,807)	(2,517)	(6,251)	(5,002)
General and administrative (G&A)	(589)	(494)	(1,126)	(966)
Operating costs and expenses, total	(8,098)	(6,608)	(14,625)	(13,003)
Operating earnings	1,088	1,067	2,096	2,113
Interest, net	(103)	(24)	(130)	(49)
Other, net	(15)	(11)	(36)	(22)
Earnings before income tax	970	1,032	1,930	2,042
Provision for income tax, net	(184)	(283)	(345)	(530)
Net earnings	$ 786	$ 749	$ 1,585	$ 1,512
Earnings per share
Basic	$ 2.65	$ 2.50	$ 5.35	$ 5.03
Diluted	$ 2.62	$ 2.45	$ 5.27	$ 4.94

Consolidated Statement of Compr

Consolidated Statement of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 01, 2018	Jul. 02, 2017	Jul. 01, 2018	Jul. 02, 2017
Statement of Comprehensive Income [Abstract]
Net earnings	$ 786	$ 749	$ 1,585	$ 1,512
(Losses) gains on cash flow hedges	(18)	135	(21)	148
Unrealized gains on marketable securities	0	2	0	7
Foreign currency translation adjustments	(216)	199	(215)	281
Change in retirement plans’ funded status	79	63	163	132
Other comprehensive (loss) income, pretax	(155)	399	(73)	568
Provision for income tax, net	(12)	(59)	(27)	(103)
Other comprehensive (loss) income, net of tax	(167)	340	(100)	465
Comprehensive income	$ 619	$ 1,089	$ 1,485	$ 1,977

Consolidated Balance Sheet (Una

Consolidated Balance Sheet (Unaudited) - USD ($) $ in Millions	Jul. 01, 2018		Dec. 31, 2017
Current assets:
Cash and equivalents	$ 1,862		$ 2,983
Accounts receivable	3,874		3,617
Unbilled receivables	7,125		5,240
Inventories	5,890		5,303
Other current assets	1,076		1,185
Total current assets	19,827		18,328
Noncurrent assets:
Property, plant and equipment, net	4,179		3,517
Intangible assets, net	2,738		702
Goodwill	19,738	[1]	11,914	[2]
Other assets	670		585
Total noncurrent assets	27,325		16,718
Total assets	47,152		35,046
Current liabilities:
Short-term debt and current portion of long-term debt	2,881		2
Accounts payable	3,032		3,207
Customer advances and deposits	7,219		6,992
Other current liabilities	3,441		2,898
Total current liabilities	16,573		13,099
Noncurrent liabilities:
Long-term debt	11,397		3,980
Other liabilities	7,188		6,532
Commitments and contingencies
Total noncurrent liabilities	18,585		10,512
Shareholders’ equity:
Common stock	482		482
Surplus	2,865		2,872
Retained earnings	28,115		26,444
Treasury stock	(15,910)		(15,543)
Accumulated other comprehensive loss	(3,558)		(2,820)
Total shareholders’ equity	11,994		11,435
Total liabilities and shareholders’ equity	$ 47,152		$ 35,046
[1]	Goodwill in the Information Technology and Mission Systems reporting units is net of $632 and $1.3 billion of accumulated impairment losses, respectively.
[2]	Goodwill in the Information Systems and Technology reporting unit is net of $1.9 billion of accumulated impairment losses.

Consolidated Statement of Cash

Consolidated Statement of Cash Flows (Unaudited) - USD ($) $ in Millions		6 Months Ended
		Jul. 01, 2018	Jul. 02, 2017
Cash flows from operating activities - continuing operations:
Net earnings		$ 1,585	$ 1,512
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation of property, plant and equipment		223	182
Amortization of intangible assets		104	38
Equity-based compensation expense		71	52
Deferred income tax provision		(6)	93
(Increase) decrease in assets, net of effects of business acquisitions:
Accounts receivable		344	(291)
Unbilled receivables		(1,030)	(815)
Inventories		(542)	(14)
Increase (decrease) in liabilities, net of effects of business acquisitions:
Accounts payable		(324)	82
Customer advances and deposits		(159)	(29)
Other, net		25	200
Net cash provided by operating activities	[1]	291	1,010
Cash flows from investing activities:
Business acquisitions, net of cash acquired		(10,039)	(89)
Capital expenditures		(279)	(153)
Other, net		74	47
Net cash used by investing activities		(10,244)	(195)
Cash flows from financing activities:
Proceeds from notes		6,461	0
Proceeds from commercial paper, net		2,786	(1)
Dividends paid		(526)	(483)
Repayment of CSRA accounts receivable purchase agreement		(450)	0
Purchases of common stock		(436)	(901)
Other, net		3	109
Net cash provided (used) by financing activities		8,838	(1,276)
Net cash used by discontinued operations		(6)	(17)
Net decrease in cash and equivalents		(1,121)	(478)
Cash and equivalents at beginning of period		2,983	2,334
Cash and equivalents at end of period		1,862	1,856
Supplemental cash flow information:
Income tax payments, net		155	328
Interest payments		95	46
LIBOR
Cash flows from financing activities:
Proceeds from notes		$ 1,000	$ 0
[1]	* Continuing operations only

Consolidated Statement of Share

Consolidated Statement of Shareholders' Equity (Unaudited) - USD ($) $ in Millions		Total	Common Stock, Par	Common Stock, Surplus	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Loss
Cumulative-effect adjustments	[1]	$ (3)			$ (3)
Beginning balance at Dec. 31, 2016		10,301	$ 482	$ 2,819	24,543	$ (14,156)	$ (3,387)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings		1,512			1,512
Cash dividends declared		(506)			(506)
Equity-based awards		76		(23)		99
Shares purchased		(893)				(893)
Other comprehensive loss		465					465
Ending balance at Jul. 02, 2017		10,952	482	2,796	25,546	(14,950)	(2,922)
Cumulative-effect adjustments		0			638		(638)
Beginning balance at Dec. 31, 2017		11,435	482	2,872	26,444	(15,543)	(2,820)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings		1,585			1,585
Cash dividends declared		(552)			(552)
Equity-based awards		62		(7)		69
Shares purchased		(436)				(436)
Other comprehensive loss		(100)					(100)
Ending balance at Jul. 01, 2018		$ 11,994	$ 482	$ 2,865	$ 28,115	$ (15,910)	$ (3,558)
[1]	Reflects the cumulative effect of Accounting Standards Update (ASU) 2016-16, Income Taxes (Topic 740): Intra-Entity Transfers of Assets Other Than Inventory, which we adopted on January 1, 2017.

Summary of Significant Accounti

Summary of Significant Accounting Policies	6 Months Ended
	Jul. 01, 2018
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Organization. General Dynamics is a global aerospace and defense company that offers a broad portfolio of products and services in business aviation; combat vehicles, weapons systems and munitions; information technology (IT) services; C4ISR (command, control, communications, computers, intelligence, surveillance and reconnaissance) solutions; and shipbuilding and ship repair. On April 3, 2018 , we completed our acquisition of CSRA Inc. (CSRA). See Note B for further discussion of the acquisition. For segment reporting purposes, concurrent with the acquisition, our Information Systems and Technology operating segment was reorganized into the Information Technology and Mission Systems segments. Our company now has five operating segments: Aerospace, Combat Systems, Information Technology, Mission Systems and Marine Systems. We collectively refer to Combat Systems, Information Technology, Mission Systems and Marine Systems as our defense segments. Prior-period segment information has been restated for this change. Basis of Consolidation and Classification. The unaudited Consolidated Financial Statements include the accounts of General Dynamics Corporation and our wholly owned and majority-owned subsidiaries. We eliminate all inter-company balances and transactions in the unaudited Consolidated Financial Statements. Some prior-year amounts have been reclassified among financial statement accounts or disclosures to conform to the current-year presentation. Consistent with industry practice, we classify assets and liabilities related to long-term contracts as current, even though some of these amounts may not be realized within one year. Further discussion of our significant accounting policies is contained in the other notes to these financial statements. Interim Financial Statements. The unaudited Consolidated Financial Statements have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission. These rules and regulations permit some of the information and footnote disclosures included in financial statements prepared in accordance with U.S. generally accepted accounting principles (GAAP) to be condensed or omitted. Our fiscal quarters are 13 weeks in length. Because our fiscal year ends on December 31, the number of days in our first and fourth quarters varies slightly from year to year. Operating results for the three- and six-month periods ended July 1, 2018 , are not necessarily indicative of the results that may be expected for the year ending December 31, 2018 . The unaudited Consolidated Financial Statements contain all adjustments that are of a normal recurring nature necessary for a fair presentation of our results of operations and financial condition for the three- and six-month periods ended July 1, 2018 , and July 2, 2017 . These unaudited Consolidated Financial Statements should be read in conjunction with the Consolidated Financial Statements and notes thereto included in our Annual Report on Form 10-K for the year ended December 31, 2017 . Accounting Standards Updates . On January 1, 2018, we adopted the following accounting standards issued by the Financial Accounting Standards Board (FASB): • ASU 2016-01, Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities. ASU 2016-01 addresses certain aspects of recognition, measurement, presentation and disclosure of financial instruments. Specific to our business, ASU 2016-01 requires equity investments to be measured at fair value with changes in fair value recognized in net income. The ASU eliminates the available-for-sale classification for equity investments that recognized changes in fair value as a component of other comprehensive income. We adopted the standard on a modified retrospective basis on January 1, 2018, and recognized the cumulative effect as a $24 increase to retained earnings on the date of adoption. • ASU 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments. ASU 2016-15 is intended to reduce diversity in practice in how certain cash receipts and cash payments are presented and classified in the Consolidated Statement of Cash Flows by providing guidance on eight specific cash flow issues. We adopted the standard retrospectively on January 1, 2018. The adoption of the ASU did not have an effect on our cash flows for the six-month period ended July 2, 2017 . • ASU 2017-07, Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost. ASU 2017-07 requires the service cost component of net benefit cost to be reported separately from the other components of net benefit cost in the Consolidated Statement of Earnings. We adopted the standard retrospectively on January 1, 2018. Our restated operating earnings increased $11 and $22 for the three- and six-month periods ended July 2, 2017 , respectively, due to the reclassification of the non-service cost components of net benefit cost, and other income decreased by the same amount, with no impact to net earnings. • ASU 2018-02, Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. ASU 2018-02 allows the reclassification from accumulated other comprehensive income to retained earnings of stranded tax effects resulting from the implementation of the Tax Cuts and Jobs Act (tax reform) enacted on December 22, 2017. We adopted the standard on January 1, 2018, and recognized a $614 increase to retained earnings on the date of adoption. For a discussion of other accounting standards that have been issued by the FASB but are not yet effective, refer to the Accounting Standards Updates section in our Annual Report on Form 10-K for the year ended December 31, 2017 .

Acquisitions and Divestitures,

Acquisitions and Divestitures, Goodwill and Intangible Assets	6 Months Ended
	Jul. 01, 2018
Business Combinations, Goodwill and Intangible Assets Disclosure [Abstract]
Acquisitions and Divestitures, Goodwill and Intangible Assets	ACQUISITIONS AND DIVESTITURES, GOODWILL, AND INTANGIBLE ASSETS CSRA Acquisition On April 3, 2018 , we acquired 100% of the outstanding shares of CSRA Inc. (CSRA) for $41.25 per share in cash. CSRA has been combined with General Dynamics Information Technology (GDIT) to create a premier provider of IT solutions to the defense, intelligence and federal civilian markets. Except where otherwise noted in the Notes to Unaudited Consolidated Financial Statements, changes in balances and activity were generally driven by the CSRA acquisition. Purchase Price and Fair Value of Net Assets Acquired. The cash purchase price totaled $9.7 billion and consisted of the following: CSRA shares outstanding (in millions) 165.4 Cash consideration per CSRA share $ 41.25 Cash paid to purchase outstanding CSRA shares $ 6,825 Cash paid to extinguish CSRA debt 2,846 Cash settlement of outstanding CSRA stock options and restricted stock units 78 Total purchase price $ 9,749 The following table summarizes the preliminary allocation of the purchase price to the estimated fair values of the assets acquired and liabilities assumed on the acquisition date, with the excess recorded as goodwill: Cash and equivalents $ 45 Accounts receivable 156 Unbilled receivables 807 Other current assets 190 Property, plant and equipment, net 685 Intangible assets, net 2,069 Goodwill 7,807 Other noncurrent assets 19 Total assets $ 11,778 Account payable $ (135 ) Customer advances and deposits (151 ) Current capital lease obligation (51 ) Other current liabilities (542 ) Noncurrent capital lease obligation (207 ) Noncurrent deferred tax liability (421 ) Other noncurrent liabilities (522 ) Total liabilities $ (2,029 ) Net assets acquired $ 9,749 We are in the process of valuing the net tangible and intangible assets acquired and liabilities assumed, and our estimate of these values were still preliminary on July 1, 2018 . Therefore, these provisional amounts are subject to change as we complete the valuations throughout the measurement period, which will extend throughout 2018. The $2.1 billion of estimated acquired intangible assets consists of acquired backlog and probable follow-on work and associated customer relationships (contract and program intangible assets), with a weighted-average life of 17 years. The intangible assets will be amortized using an accelerated method, which approximates the pattern of how the economic benefit is expected to be used. Under this method, approximately 50% of the aggregate value of the intangible assets will be amortized within six years . We expect to record amortization expense associated with these intangible assets over the next five years as follows: 2018 (9 months post-acquisition) $ 188 2019 204 2020 195 2021 154 2022 136 Goodwill represents the purchase price paid in excess of the fair value of net tangible and intangible assets acquired, and is attributable primarily to expected synergies, economies of scale and the assembled workforce of CSRA. Approximately $490 of this goodwill is considered pre-acquisition goodwill and is, therefore, deductible for income tax purposes over its remaining tax life. CSRA’s operating results have been included with our reported results since the acquisition date. Excluding the amortization of intangible assets and acquisition financing, $1.3 billion of revenue, $134 of operating earnings and $147 of pretax earnings from CSRA were included in our unaudited Consolidated Statement of Earnings for the three- and six-month periods ended July 1, 2018 . In connection with the acquisition, we have recognized approximately $75 of one-time, acquisition-related costs, reported in operating costs and expenses and other income (expense) in the unaudited Consolidated Statement of Earnings. Pro Forma Information. The following pro forma information presents our consolidated revenue and net earnings as if the acquisition of CSRA and the related financing transactions had occurred on January 1, 2017 : Three Months Ended Six Months Ended July 1, 2018 July 2, 2017 July 1, 2018 July 2, 2017 Revenue $ 9,186 $ 8,853 $ 18,023 $ 17,497 Net earnings 804 756 1,534 1,489 Diluted earnings per share $ 2.68 $ 2.48 $ 5.10 $ 4.86 The pro forma information was prepared by combining our reported historical results with the historical results of CSRA for the pre-acquisition periods. In addition, the reported historical amounts were adjusted for the following items, net of associated tax effects: • The impact of acquisition financing. • The removal of certain CSRA operations we are required by a government customer to dispose of to address an organizational conflict of interest with respect to services provided to the customer. While the operation is classified as held for sale, it has not yet been sold as of July 1, 2018 . • The removal of CSRA’s historical pre-acquisition intangible asset amortization expense and debt-related interest expense. • The impact of intangible asset amortization expense assuming our current estimate of fair value was applied on January 1, 2017 . • The payment of acquisition-related costs assuming they were incurred on January 1, 2017 . The pro forma information is based on the preliminary amounts allocated to the estimated fair value of net assets acquired and may be revised as the provisional amounts change. The pro forma information does not reflect the realization of expected cost savings or synergies from the acquisition, and does not reflect what our combined results of operations would have been had the acquisition occurred on January 1, 2017 . Other Acquisitions and Divestitures In addition to the acquisition of CSRA, we acquired two businesses in the first six months of 2018 for an aggregate of $335 : Hawker Pacific, a leading provider of integrated aviation solutions across Asia Pacific and the Middle East , in our Aerospace segment, and a provider of specialized transmitters and receivers in our Mission Systems segment. In 2017 , we acquired four businesses for an aggregate of $399 : a fixed-base operation (FBO) in our Aerospace segment; a provider of mission-critical support services in our Information Technology segment; and a manufacturer of electronics and communications products and a manufacturer of signal distribution products in our Mission Systems segment. The operating results of these acquisitions have been included with our reported results since the respective closing dates. The purchase prices of the acquisitions have been allocated to the estimated fair value of net tangible and intangible assets acquired, with any excess purchase price recorded as goodwill. In the first six months of 2018 , we completed the sale of a commercial health products business in our Information Technology segment. The proceeds from the sale are included in other investing activities, net, in the unaudited Consolidated Statement of Cash Flows. Goodwill The changes in the carrying amount of goodwill by reporting unit were as follows: Aerospace Combat Systems Information Systems and Technology Information Technology Mission Systems Marine Systems Total Goodwill December 31, 2017 (a) $ 2,638 $ 2,677 $ 6,302 $ — $ — $ 297 $ 11,914 Acquisitions/ — — 16 — — — 16 Other (c) 40 (14 ) (1 ) — — — 25 April 1, 2018 (a) 2,678 2,663 6,317 — — 297 11,955 Change in reporting unit composition (d) — — (6,317 ) 2,076 4,241 — — Acquisitions/ divestitures (b) 149 — — 7,752 1 — 7,902 Other (c) (71 ) (36 ) — — (12 ) — (119 ) July 1, 2018 (e) $ 2,756 $ 2,627 $ — $ 9,828 $ 4,230 $ 297 $ 19,738 (a) Goodwill in the Information Systems and Technology reporting unit is net of $1.9 billion of accumulated impairment losses. (b) Includes adjustments during the purchase price allocation period. Activity in the first quarter of 2018 also includes an allocation of goodwill associated with the sale of the commercial health products business discussed above. (c) Consists primarily of adjustments for foreign currency translation. (d) Concurrent with the acquisition of CSRA, we reorganized our Information Systems and Technology operating segment into the Information Technology and Mission Systems segments. See Note A for further discussion of the segment reorganization. This reorganization similarly changed the composition of our reporting units. Accordingly, goodwill of the Information Systems and Technology reporting unit was reassigned to the Information Technology and Mission Systems reporting units using a relative fair value allocation approach as of the date of the reorganization. (e) Goodwill in the Information Technology and Mission Systems reporting units is net of $632 and $1.3 billion of accumulated impairment losses, respectively. Intangible Assets Intangible assets consisted of the following: Gross Carrying Amount (a) Accumulated Amortization Net Carrying Amount Gross Carrying Amount (a) Accumulated Amortization Net Carrying Amount July 1, 2018 December 31, 2017 Contract and program intangible assets (b) $ 3,793 $ (1,394 ) $ 2,399 $ 1,684 $ (1,320 ) $ 364 Trade names and trademarks 458 (166 ) 292 465 (160 ) 305 Technology and software 158 (112 ) 46 137 (105 ) 32 Other intangible assets 155 (154 ) 1 155 (154 ) 1 Total intangible assets $ 4,564 $ (1,826 ) $ 2,738 $ 2,441 $ (1,739 ) $ 702 (a) Change in gross carrying amounts consists primarily of adjustments for acquired intangible assets and foreign currency translation. (b) Consists of acquired backlog and probable follow-on work and associated customer relationships. Amortization expense was $84 and $104 for the three- and six-month periods ended July 1, 2018 , and $19 and $38 for the three- and six-month periods ended July 2, 2017 .

Revenue

Revenue	6 Months Ended
	Jul. 01, 2018
Revenue Recognition [Abstract]
Revenue	REVENUE The majority of our revenue is derived from long-term contracts and programs that can span several years. We account for revenue in accordance with ASC Topic 606, Revenue from Contracts with Customers. Performance Obligations. A performance obligation is a promise in a contract to transfer a distinct good or service to the customer, and is the unit of account in ASC Topic 606. A contract’s transaction price is allocated to each distinct performance obligation and recognized as revenue when, or as, the performance obligation is satisfied. The majority of our contracts have a single performance obligation as the promise to transfer the individual goods or services is not separately identifiable from other promises in the contracts and is, therefore, not distinct. Some of our contracts have multiple performance obligations, most commonly due to the contract covering multiple phases of the product lifecycle (development, production, maintenance and support). For contracts with multiple performance obligations, we allocate the contract’s transaction price to each performance obligation using our best estimate of the standalone selling price of each distinct good or service in the contract. The primary method used to estimate standalone selling price is the expected cost plus a margin approach, under which we forecast our expected costs of satisfying a performance obligation and then add an appropriate margin for that distinct good or service. Contract modifications are routine in the performance of our contracts. Contracts are often modified to account for changes in contract specifications or requirements. In most instances, contract modifications are for goods or services that are not distinct, and, therefore, are accounted for as part of the existing contract. Our performance obligations are satisfied over time as work progresses or at a point in time. Revenue from products and services transferred to customers over time accounted for 78% and 75% of our revenue for the three- and six-month periods ended July 1, 2018 , and 71% and 70% of our revenue for the three- and six-month periods ended July 2, 2017 , respectively. Substantially all of our revenue in the defense segments is recognized over time because control is transferred continuously to our customers. Typically, revenue is recognized over time using costs incurred to date relative to total estimated costs at completion to measure progress toward satisfying our performance obligations. Incurred cost represents work performed, which corresponds with, and thereby best depicts, the transfer of control to the customer. Contract costs include labor, material, overhead and, when appropriate, G&A expenses. Revenue from goods and services transferred to customers at a point in time accounted for 22% and 25% of our revenue for the three- and six-month periods ended July 1, 2018 , and 29% and 30% of our revenue for the three- and six-month periods ended July 2, 2017 , respectively. The majority of our revenue recognized at a point in time is for the manufacture of business-jet aircraft in our Aerospace segment. Revenue on these contracts is recognized when the customer obtains control of the asset, which is generally upon delivery and acceptance by the customer of the fully outfitted aircraft. On July 1, 2018 , we had $66.3 billion of remaining performance obligations, which we also refer to as total backlog. We expect to recognize approximately 60% of our remaining performance obligations as revenue by year-end 2019, an additional 25% by year-end 2021 and the balance thereafter. On December 31, 2017 , we had $63.2 billion of remaining performance obligations, and on December 31, 2017 , we expected to recognize approximately 40% of these remaining performance obligations as revenue in 2018, an additional 40% by year-end 2020 and the balance thereafter. Contract Estimates. Accounting for long-term contracts and programs involves the use of various techniques to estimate total contract revenue and costs. For long-term contracts, we estimate the profit on a contract as the difference between the total estimated revenue and expected costs to complete a contract and recognize that profit over the life of the contract. Contract estimates are based on various assumptions to project the outcome of future events that often span several years. These assumptions include labor productivity and availability; the complexity of the work to be performed; the cost and availability of materials; the performance of subcontractors; and the availability and timing of funding from the customer. The nature of our contracts gives rise to several types of variable consideration, including claims and award and incentive fees. We include in our contract estimates additional revenue for submitted contract modifications or claims against the customer when we believe we have an enforceable right to the modification or claim, the amount can be estimated reliably and its realization is probable. In evaluating these criteria, we consider the contractual/legal basis for the claim, the cause of any additional costs incurred, the reasonableness of those costs and the objective evidence available to support the claim. We include award or incentive fees in the estimated transaction price when there is a basis to reasonably estimate the amount of the fee. These estimates are based on historical award experience, anticipated performance and our best judgment at the time. Because of our certainty in estimating these amounts, they are included in the transaction price of our contracts and the associated remaining performance obligations. As a significant change in one or more of these estimates could affect the profitability of our contracts, we review and update our contract-related estimates regularly. We recognize adjustments in estimated profit on contracts under the cumulative catch-up method. Under this method, the impact of the adjustment on profit recorded to date on a contract is recognized in the period the adjustment is identified. Revenue and profit in future periods of contract performance are recognized using the adjusted estimate. If at any time the estimate of contract profitability indicates an anticipated loss on the contract, we recognize the total loss in the period it is identified. The impact of adjustments in contract estimates on our operating earnings can be reflected in either operating costs and expenses or revenue. The aggregate impact of adjustments in contract estimates increased our revenue, operating earnings and diluted earnings per share as follows: Three Months Ended Six Months Ended July 1, 2018 July 2, 2017 July 1, 2018 July 2, 2017 Revenue $ 91 $ 90 $ 206 $ 162 Operating earnings 83 121 180 171 Diluted earnings per share $ 0.22 $ 0.26 $ 0.47 $ 0.36 No adjustment on any one contract was material to the unaudited Consolidated Financial Statements for the three- and six-month periods ended July 1, 2018 , or July 2, 2017 . Revenue by Category. Our portfolio of products and services consists of over 10,000 active contracts. The following series of tables presents our revenue disaggregated by several categories. Revenue by major products and services was as follows: Three Months Ended Six Months Ended July 1, 2018 July 2, 2017 July 1, 2018 July 2, 2017 Aircraft manufacturing and completions $ 1,362 $ 1,600 $ 2,728 $ 3,229 Aircraft services 531 445 982 880 Pre-owned aircraft 2 33 10 43 Total Aerospace 1,895 2,078 3,720 4,152 Wheeled combat and tactical vehicles 644 566 1,269 1,126 Weapons systems, armament and munitions 443 409 826 755 Tanks and tracked vehicles 346 278 677 525 Engineering and other services 101 161 202 295 Total Combat Systems 1,534 1,414 2,974 2,701 Information technology services 2,442 1,052 3,580 2,110 Total Information Technology 2,442 1,052 3,580 2,110 Platform systems and sensors 383 393 774 783 Intelligence, surveillance and reconnaissance systems 372 333 749 662 Communication systems 392 326 722 695 Total Mission Systems 1,147 1,052 2,245 2,140 Nuclear-powered submarines 1,438 1,342 2,734 2,546 Surface combatants 276 254 541 501 Auxiliary and commercial ships 197 155 415 298 Repair and other services 257 328 512 668 Total Marine Systems 2,168 2,079 4,202 4,013 Total revenue $ 9,186 $ 7,675 $ 16,721 $ 15,116 Revenue by contract type was as follows: Three Months Ended July 1, 2018 Aerospace Combat Systems Information Technology Mission Systems Marine Systems Total Revenue Fixed-price $ 1,696 $ 1,330 $ 1,059 $ 658 $ 1,372 $ 6,115 Cost-reimbursement — 197 930 451 795 2,373 Time-and-materials 199 7 453 38 1 698 Total revenue $ 1,895 $ 1,534 $ 2,442 $ 1,147 $ 2,168 $ 9,186 Three Months Ended July 2, 2017 Fixed-price $ 1,913 $ 1,207 $ 339 $ 553 $ 1,253 $ 5,265 Cost-reimbursement — 196 555 463 824 2,038 Time-and-materials 165 11 158 36 2 372 Total revenue $ 2,078 $ 1,414 $ 1,052 $ 1,052 $ 2,079 $ 7,675 Six Months Ended July 1, 2018 Aerospace Combat Systems Information Technology Mission Systems Marine Systems Total Revenue Fixed-price $ 3,364 $ 2,583 $ 1,446 $ 1,278 $ 2,677 $ 11,348 Cost-reimbursement — 376 1,507 891 1,523 4,297 Time-and-materials 356 15 627 76 2 1,076 Total revenue $ 3,720 $ 2,974 $ 3,580 $ 2,245 $ 4,202 $ 16,721 Six Months Ended July 2, 2017 Fixed-price $ 3,815 $ 2,280 $ 690 $ 1,132 $ 2,383 $ 10,300 Cost-reimbursement — 403 1,108 920 1,625 4,056 Time-and-materials 337 18 312 88 5 760 Total revenue $ 4,152 $ 2,701 $ 2,110 $ 2,140 $ 4,013 $ 15,116 Each of these contract types presents advantages and disadvantages. Typically, we assume more risk with fixed-price contracts. However, these types of contracts offer additional profits when we complete the work for less than originally estimated. Cost-reimbursement contracts generally subject us to lower risk. Accordingly, the associated base fees are usually lower than fees earned on fixed-price contracts. Under time-and-materials contracts, our profit may vary if actual labor-hour rates vary significantly from the negotiated rates. Also, because these contracts can provide little or no fee for managing material costs, the content mix can impact profitability. Revenue by customer was as follows: Three Months Ended July 1, 2018 Aerospace Combat Systems Information Technology Mission Systems Marine Systems Total Revenue U.S. government: Department of Defense (DoD) $ 89 $ 660 $ 1,052 $ 764 $ 2,032 $ 4,597 Non-DoD — 3 1,311 130 1 1,445 Foreign Military Sales (FMS) 19 83 7 14 39 162 Total U.S. government 108 746 2,370 908 2,072 6,204 U.S. commercial 917 58 41 36 91 1,143 Non-U.S. government 143 712 31 161 4 1,051 Non-U.S. commercial 727 18 — 42 1 788 Total revenue $ 1,895 $ 1,534 $ 2,442 $ 1,147 $ 2,168 $ 9,186 Three Months Ended July 2, 2017 U.S. government: DoD $ 32 $ 660 $ 424 $ 678 $ 2,016 $ 3,810 Non-DoD — 1 551 147 — 699 FMS 9 83 6 15 40 153 Total U.S. government 41 744 981 840 2,056 4,662 U.S. commercial 877 42 65 26 17 1,027 Non-U.S. government 64 594 6 154 4 822 Non-U.S. commercial 1,096 34 — 32 2 1,164 Total revenue $ 2,078 $ 1,414 $ 1,052 $ 1,052 $ 2,079 $ 7,675 Six Months Ended July 1, 2018 Aerospace Combat Systems Information Technology Mission Systems Marine Systems Total Revenue U.S. government: DoD $ 130 $ 1,267 $ 1,485 $ 1,506 $ 3,982 $ 8,370 Non-DoD — 4 1,948 248 1 2,201 FMS 35 152 15 21 68 291 Total U.S. government 165 1,423 3,448 1,775 4,051 10,862 U.S. commercial 1,759 116 81 63 144 2,163 Non-U.S. government 153 1,409 51 333 6 1,952 Non-U.S. commercial 1,643 26 — 74 1 1,744 Total revenue $ 3,720 $ 2,974 $ 3,580 $ 2,245 $ 4,202 $ 16,721 Six Months Ended July 2, 2017 U.S. government: DoD $ 72 $ 1,269 $ 845 $ 1,399 $ 3,853 $ 7,438 Non-DoD — 3 1,118 278 — 1,399 FMS 18 191 11 22 98 340 Total U.S. government 90 1,463 1,974 1,699 3,951 9,177 U.S. commercial 1,813 103 126 54 50 2,146 Non-U.S. government 69 1,096 10 329 8 1,512 Non-U.S. commercial 2,180 39 — 58 4 2,281 Total revenue $ 4,152 $ 2,701 $ 2,110 $ 2,140 $ 4,013 $ 15,116 Contract Balances. The timing of revenue recognition, billings and cash collections results in billed accounts receivable, unbilled receivables (contract assets), and customer advances and deposits (contract liabilities) on the Consolidated Balance Sheet. In our defense segments, amounts are billed as work progresses in accordance with agreed-upon contractual terms, either at periodic intervals (e.g., biweekly or monthly) or upon achievement of contractual milestones. Generally, billing occurs subsequent to revenue recognition, resulting in contract assets. However, we sometimes receive advances or deposits from our customers, particularly on our international contracts, before revenue is recognized, resulting in contract liabilities. These assets and liabilities are reported on the Consolidated Balance Sheet on a contract-by-contract basis at the end of each reporting period. In our Aerospace segment, we generally receive deposits from customers upon contract execution and upon achievement of contractual milestones. These deposits are liquidated when revenue is recognized. Changes in the contract asset and liability balances during the six-month period ended July 1, 2018 , were not materially impacted by any other factors except for the acquisition of CSRA as further described in Note B. Revenue recognized for the three- and six-month periods ended July 1, 2018 , and July 2, 2017 , that was included in the contract liability balance at the beginning of each year was $1.1 billion and $2.6 billion , and $1.2 billion and $2.9 billion , respectively. This revenue represented primarily the sale of business-jet aircraft.

Earnings Per Share

Earnings Per Share	6 Months Ended
	Jul. 01, 2018
Earnings Per Share [Abstract]
Earnings Per Share	EARNINGS PER SHARE We compute basic earnings per share (EPS) using net earnings for the period and the weighted average number of common shares outstanding during the period. Basic weighted average shares outstanding have decreased in 2018 and 2017 due to share repurchases. See Note K for further discussion of our share repurchases. Diluted EPS incorporates the additional shares issuable upon the assumed exercise of stock options and the release of restricted stock and restricted stock units (RSUs). Basic and diluted weighted average shares outstanding were as follows (in thousands): Three Months Ended Six Months Ended July 1, 2018 July 2, 2017 July 1, 2018 July 2, 2017 Basic weighted average shares outstanding 296,153 299,790 296,276 300,780 Dilutive effect of stock options and restricted stock/RSUs* 3,986 5,560 4,318 5,560 Diluted weighted average shares outstanding 300,139 305,350 300,594 306,340 * Excludes outstanding options to purchase shares of common stock that had exercise prices in excess of the average market price of our common stock during the period and, therefore, the effect of including these options would be antidilutive. These options totaled 3,511 and 2,851 for the three- and six-month periods ended July 1, 2018 , and 1,846 and 1,251 for the three- and six-month periods ended July 2, 2017 , respectively.

Fair Value

Fair Value	6 Months Ended
	Jul. 01, 2018
Fair Value Disclosures [Abstract]
Fair Value	FAIR VALUE Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in the principal or most advantageous market in an orderly transaction between marketplace participants. Various valuation approaches can be used to determine fair value, each requiring different valuation inputs. The following hierarchy classifies the inputs used to determine fair value into three levels: • Level 1 - quoted prices in active markets for identical assets or liabilities; • Level 2 - inputs, other than quoted prices, observable by a marketplace participant either directly or indirectly; and • Level 3 - unobservable inputs significant to the fair value measurement. We did not have any significant non-financial assets or liabilities measured at fair value on July 1, 2018 , or December 31, 2017 . Our financial instruments include cash and equivalents, accounts receivable and payable, marketable securities held in trust and other investments, short- and long-term debt, and derivative financial instruments. The carrying values of cash and equivalents and accounts receivable and payable on the unaudited Consolidated Balance Sheet approximate their fair value. The following tables present the fair values of our other financial assets and liabilities on July 1, 2018 , and December 31, 2017 , and the basis for determining their fair values: Carrying Value Fair Value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Financial Assets (Liabilities) July 1, 2018 Measured at fair value: Marketable securities held in trust: Cash and equivalents $ 8 $ 8 $ 2 $ 6 $ — Available-for-sale debt securities 127 127 — 127 — Equity securities 52 52 52 — — Other investments 4 4 — — 4 Cash flow hedges (151 ) (151 ) — (151 ) — Measured at amortized cost: Short- and long-term debt principal (14,400 ) (14,194 ) — (14,194 ) — December 31, 2017 Measured at fair value: Marketable securities held in trust: Cash and equivalents $ 20 $ 20 $ 15 $ 5 $ — Available-for-sale debt securities 117 117 — 117 — Equity securities 54 54 54 — — Other investments 4 4 — — 4 Cash flow hedges (105 ) (105 ) — (105 ) — Measured at amortized cost: Short- and long-term debt principal (4,032 ) (3,974 ) — (3,974 ) — Our Level 1 assets include investments in publicly traded equity securities valued using quoted prices from the market exchanges. The fair value of our Level 2 assets and liabilities is determined under a market approach using valuation models that incorporate observable inputs such as interest rates, bond yields and quoted prices for similar assets. Our Level 3 assets include direct private equity investments that are measured using inputs unobservable to a marketplace participant.

Income Taxes

Income Taxes	6 Months Ended
	Jul. 01, 2018
Income Tax Disclosure [Abstract]
Income Taxes	INCOME TAXES Income Tax Provision. We calculate our provision for federal, state and international income taxes based on current tax law. U.S. federal tax reform was enacted on December 22, 2017, and has several key provisions impacting accounting for and reporting of income taxes. The most significant provision reduced the U.S. corporate statutory tax rate from 35% to 21% beginning on January 1, 2018. We recorded the effect of the change in tax law in the fourth quarter of 2017. Net Deferred Tax Liability. Our deferred tax assets and liabilities are included in other noncurrent assets and liabilities on the Consolidated Balance Sheet. Our net deferred tax liability consisted of the following: July 1, 2018 December 31, 2017 Deferred tax asset $ 36 $ 75 Deferred tax liability (594 ) (244 ) Net deferred tax liability $ (558 ) $ (169 ) Tax Uncertainties. For all periods open to examination by tax authorities, we periodically assess our liabilities and contingencies based on the latest available information. Where we believe there is more than a 50% chance that our tax position will not be sustained, we record our best estimate of the resulting tax liability, including interest, in the Consolidated Financial Statements. We include any interest or penalties incurred in connection with income taxes as part of income tax expense. The total amount of these tax liabilities on July 1, 2018 , was not material to our results of operations, financial condition or cash flows. We participate in the Internal Revenue Service (IRS) Compliance Assurance Process (CAP), a real-time audit of our consolidated federal corporate income tax return. The IRS has examined our consolidated federal income tax returns through 2016. We do not expect the resolution of tax matters for open years to have a material impact on our results of operations, financial condition, cash flows or effective tax rate. Based on all known facts and circumstances and current tax law, we believe the total amount of any unrecognized tax benefits on July 1, 2018 , was not material to our results of operations, financial condition or cash flows, and if recognized, would not have a material impact on our effective tax rate. In addition, there are no tax positions for which it is reasonably possible that the unrecognized tax benefits will vary significantly over the next 12 months, producing, individually or in the aggregate, a material effect on our results of operations, financial condition or cash flows.

Unbilled Receivables

Unbilled Receivables	6 Months Ended
	Jul. 01, 2018
Contractors [Abstract]
Unbilled Receivables	UNBILLED RECEIVABLES Unbilled receivables represent revenue recognized on long-term contracts (contract costs and estimated profits) less associated advances and progress billings. These amounts will be billed in accordance with the agreed-upon contractual terms or upon achievement of contractual milestones. Unbilled receivables consisted of the following: July 1, 2018 December 31, 2017 Unbilled revenue $ 24,610 $ 21,845 Advances and progress billings (17,485 ) (16,605 ) Net unbilled receivables $ 7,125 $ 5,240 Excluding the acquisition of CSRA, the increase in net unbilled receivables during the six-month period ended July 1, 2018 , was due primarily to the timing of billings on large international vehicle contracts in our Combat Systems segment.

Inventories

Inventories	6 Months Ended
	Jul. 01, 2018
Inventory Disclosure [Abstract]
Inventories	INVENTORIES The majority of our inventories are for business-jet aircraft. Our inventories are stated at the lower of cost or net realizable value. Work in process represents largely labor, material and overhead costs associated with aircraft in the manufacturing process and is based primarily on the estimated average unit cost in a production lot. Raw materials are valued primarily on the first-in, first-out method. We record pre-owned aircraft acquired in connection with the sale of new aircraft at the lower of the trade-in value or the estimated net realizable value. Inventories consisted of the following: July 1, 2018 December 31, 2017 Work in process $ 4,385 $ 3,872 Raw materials 1,381 1,357 Finished goods 49 51 Pre-owned aircraft 75 23 Total inventories $ 5,890 $ 5,303 The increase in total inventories during the six-month period ended July 1, 2018 , was due primarily to the ramp-up in production of the new G500 and G600 aircraft programs in our Aerospace segment.

Debt

Debt	6 Months Ended
	Jul. 01, 2018
Debt Disclosure [Abstract]
Debt	DEBT Debt consisted of the following: July 1, 2018 December 31, 2017 Fixed-rate notes due: Interest rate: May 2020 2.875% $ 2,000 $ — May 2021 3.000% 2,000 — July 2021 3.875% 500 500 November 2022 2.250% 1,000 1,000 May 2023 3.375% 750 — August 2023 1.875% 500 500 November 2024 2.375% 500 500 May 2025 3.500% 750 — August 2026 2.125% 500 500 November 2027 2.625% 500 500 May 2028 3.750% 1,000 — November 2042 3.600% 500 500 Floating-rate notes due: May 2020 3-month LIBOR + 0.29% 500 — May 2021 3-month LIBOR + 0.38% 500 — Commercial paper 2.137% 2,796 — Other Various 104 32 Total debt principal 14,400 4,032 Less unamortized debt issuance costs and discounts 122 50 Total debt 14,278 3,982 Less current portion 2,881 2 Long-term debt $ 11,397 $ 3,980 In April 2018, we borrowed $7.5 billion under a short-term credit facility to finance, in part, the acquisition of CSRA. In May 2018, we issued $7.5 billion of fixed- and floating-rate notes to repay the borrowings under this facility. W e entered into interest rate swap contracts that exchange the floating interest rates on the $500 notes due in May 2020 and May 2021 for fixed rates. The result of the interest rate swap contracts is effective interest rates on the floating-rate notes that are the same as the rates on the fixed-rate notes due in May 2020 and May 2021 . See Note L for further discussion of our derivative financial instruments. Our fixed- and floating-rate notes are fully and unconditionally guaranteed by several of our 100% -owned subsidiaries. See Note P for condensed consolidating financial statements. We have the option to redeem the fixed-rate notes prior to their maturity in whole or in part for the principal plus any accrued but unpaid interest and applicable make-whole amounts. The aggregate amounts of scheduled principal maturities of our debt in the remainder of 2018 and in subsequent years are as follows: 2018 $ 2,887 2019 2 2020 2,502 2021 3,002 2022 1,002 Thereafter 5,005 Total debt principal $ 14,400 On July 1, 2018 , we had $2.8 billion of commercial paper outstanding with a dollar-weighted average interest rate of 2.137% . We have $5 billion in committed bank credit facilities for general corporate purposes and working capital needs and to support our commercial paper issuances. These credit facilities include a $2 billion 364 -day facility expiring in March 2019 , a $1 billion multi-year facility expiring in November 2020 and a $2 billion multi-year facility expiring in March 2023 . We may renew or replace these credit facilities in whole or in part at or prior to their expiration dates. Our credit facilities are guaranteed by several of our 100% -owned subsidiaries. We also have an effective shelf registration on file with the Securities and Exchange Commission that allows us to access the debt markets. Our financing arrangements contain a number of customary covenants and restrictions. We were in compliance with all covenants and restrictions on July 1, 2018 .

Other Liabilities

Other Liabilities	6 Months Ended
	Jul. 01, 2018
Other Liabilities Disclosure [Abstract]
Other Liabilities	OTHER LIABILITIES A summary of significant other liabilities by balance sheet caption follows: July 1, 2018 December 31, 2017 Salaries and wages $ 892 $ 786 Workers’ compensation 319 320 Retirement benefits 299 295 Fair value of cash flow hedges 221 180 Other (a) 1,710 1,317 Total other current liabilities $ 3,441 $ 2,898 Retirement benefits $ 4,561 $ 4,408 Customer deposits on commercial contracts 587 814 Deferred income taxes 594 244 Other (b) 1,446 1,066 Total other liabilities $ 7,188 $ 6,532 (a) Consists primarily of dividends payable, taxes payable, capital lease obligations, environmental remediation reserves, warranty reserves, deferred revenue and supplier contributions in the Aerospace segment, liabilities of discontinued operations, and insurance-related costs. (b) Consists primarily of capital lease obligations, warranty reserves, workers’ compensation liabilities and liabilities of discontinued operations.

Shareholders' Equity

Shareholders' Equity	6 Months Ended
	Jul. 01, 2018
Equity [Abstract]
Shareholders' Equity	SHAREHOLDERS ’ EQUITY Share Repurchases. Our board of directors from time to time authorizes management’s repurchase of outstanding shares of our common stock on the open market. On March 1, 2017, the board of directors authorized management to repurchase up to 10 million additional shares of the company’s outstanding stock. In the six -month period ended July 1, 2018 , we repurchased 2.1 million of our outstanding shares for $436 . On July 1, 2018 , 5.5 million shares remained authorized by our board of directors for repurchase, approximately 2% of our total shares outstanding. We repurchased 4.6 million shares for $893 in the six -month period ended July 2, 2017 . Dividends per Share. Our board of directors declared dividends of $0.93 and $1.86 per share for the three- and six-month periods ended July 1, 2018 , and $0.84 and $1.68 per share for the three- and six-month periods ended July 2, 2017 , respectively. We paid cash dividends of $276 and $526 for the three- and six-month periods ended July 1, 2018 , and $253 and $483 for the three- and six-month periods ended July 2, 2017 , respectively. Accumulated Other Comprehensive Loss. The changes, pretax and net of tax, in each component of accumulated other comprehensive loss (AOCL) consisted of the following: Losses on Cash Flow Hedges Unrealized Gains on Marketable Securities Foreign Currency Translation Adjustments Changes in Retirement Plans’ Funded Status AOCL December 31, 2017 $ (94 ) $ 19 $ 402 $ (3,147 ) $ (2,820 ) Cumulative effect adjustments (see Note A) (4 ) (19 ) — (615 ) (638 ) Other comprehensive income, pretax (21 ) — (215 ) 163 (73 ) Provision for income tax, net 7 — — (34 ) (27 ) Other comprehensive loss, net of tax (14 ) — (215 ) 129 (100 ) July 1, 2018 $ (112 ) $ — $ 187 $ (3,633 ) $ (3,558 ) December 31, 2016 $ (345 ) $ 14 $ 69 $ (3,125 ) $ (3,387 ) Other comprehensive income, pretax 148 7 281 132 568 Provision for income tax, net (39 ) (2 ) (15 ) (47 ) (103 ) Other comprehensive income, net of tax 109 5 266 85 465 July 2, 2017 $ (236 ) $ 19 $ 335 $ (3,040 ) $ (2,922 ) Current-period amounts reclassified out of AOCL related primarily to changes in our retirement plans’ funded status and consisted of pretax recognized net actuarial losses of $187 and $170 for the six-month periods ended July 1, 2018 , and July 2, 2017 , respectively. This was offset partially by pretax amortization of prior service credit of $24 and $35 for the six-month periods ended July 1, 2018 , and July 2, 2017 , respectively. These AOCL components are included in our net periodic pension and other post-retirement benefit cost. See Note N for additional details.

Derivative Instruments And Hedg

Derivative Instruments And Hedging Activities	6 Months Ended
	Jul. 01, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments And Hedging Activities	DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES We are exposed to market risk, primarily from foreign currency exchange rates, interest rates, commodity prices and investments. We may use derivative financial instruments to hedge some of these risks as described below. We do not use derivative financial instruments for trading or speculative purposes. Foreign Currency Risk. Our foreign currency exchange rate risk relates to receipts from customers, payments to suppliers and inter-company transactions denominated in foreign currencies. To the extent possible, we include terms in our contracts that are designed to protect us from this risk. Otherwise, we enter into derivative financial instruments, principally foreign currency forward purchase and sale contracts, designed to offset and minimize our risk. The dollar-weighted two -year average maturity of these instruments generally matches the duration of the activities that are at risk. Interest Rate Risk. Our financial instruments subject to interest rate risk include variable-rate commercial paper and fixed-rate long-term debt obligations. However, the risk associated with these instruments is not material. Our floating-rate long-term debt obligations are also subject to interest rate risk. However, as described in Note I, we entered into derivative financial instruments, specifically interest rate swap contracts, to eliminate our floating-rate interest risk. Commodity Price Risk. We are subject to rising labor and commodity price risk, primarily on long-term, fixed-price contracts. To the extent possible, we include terms in our contracts that are designed to protect us from these risks. Some of the protective terms included in our contracts are considered derivative financial instruments but are not accounted for separately, because they are clearly and closely related to the host contract. We have not entered into any material commodity hedging contracts but may do so as circumstances warrant. We do not believe that changes in labor or commodity prices will have a material impact on our results of operations or cash flows. Investment Risk. Our investment policy allows for purchases of fixed-income securities with an investment-grade rating and a maximum maturity of up to five years . On July 1, 2018 , we held $1.9 billion in cash and equivalents, but held no marketable securities other than those held in trust to meet some of our obligations under workers’ compensation and non-qualified supplemental executive retirement plans. On July 1, 2018 , and December 31, 2017 , these marketable securities totaled $187 and $191 , respectively, and were reflected at fair value on the unaudited Consolidated Balance Sheet in other current and noncurrent assets. See Note E for additional details. Hedging Activities. We had $6 billion in notional forward exchange and interest rate swap contracts outstanding on July 1, 2018 , and $4.3 billion on December 31, 2017 . These derivative financial instruments are cash flow hedges, and are reported on the Consolidated Balance Sheet at fair value. See Note E for additional details. Changes in fair value (gains and losses) related to derivative financial instruments that qualify as cash flow hedges are deferred in other comprehensive loss (OCL) until the underlying transaction is reflected in earnings. Gains and losses on derivative financial instruments that do not qualify for hedge accounting are recorded each period in the Consolidated Statement of Earnings in operating costs and expenses or interest expense. The gains and losses on derivative financial instruments that do not qualify for hedge accounting generally offset losses and gains on the assets and liabilities being hedged. Gains and losses resulting from hedge ineffectiveness are recognized in the Consolidated Statement of Earnings for all derivative financial instruments, regardless of designation. Net gains and losses on derivative financial instruments recognized in earnings, including gains and losses related to hedge ineffectiveness, were not material to our results of operations for the three- and six-month periods ended July 1, 2018 , and July 2, 2017 . Net gains and losses reclassified to earnings from OCL were not material to our results of operations for the three- and six-month periods ended July 1, 2018 , and July 2, 2017 , and we do not expect the amount of these gains and losses that will be reclassified to earnings during the next 12 months to be material. We had no material derivative financial instruments designated as fair value or net investment hedges on July 1, 2018 , or December 31, 2017 . Foreign Currency Financial Statement Translation. We translate foreign currency balance sheets from our international businesses’ functional currency (generally the respective local currency) to U.S. dollars at the end-of-period exchange rates, and statements of earnings at the average exchange rates for each period. The resulting foreign currency translation adjustments are a component of OCL. We do not hedge the fluctuation in reported revenue and earnings resulting from the translation of these international operations’ results into U.S. dollars. The impact of translating our non-U.S. operations’ revenue into U.S. dollars was not material to our results of operations for the three- and six-month periods ended July 1, 2018 , or July 2, 2017 . In addition, the effect of changes in foreign exchange rates on non-U.S. cash balances was not material for the six -month periods ended July 1, 2018 , and July 2, 2017 .

Commitments And Contingencies

Commitments And Contingencies	6 Months Ended
	Jul. 01, 2018
Commitments and Contingencies Disclosure [Abstract]
Commitments And Contingencies	COMMITMENTS AND CONTINGENCIES Litigation In 2015, Electric Boat Corporation, a subsidiary of General Dynamics Corporation, received a Civil Investigative Demand from the U.S. Department of Justice regarding an investigation of potential False Claims Act violations relating to alleged failures of Electric Boat’s quality system with respect to allegedly non-conforming parts purchased from a supplier. In 2016, Electric Boat was made aware that it is a defendant in a lawsuit related to this matter filed under seal in U.S. district court. Also in 2016, the Suspending and Debarring Official for the U.S. Department of the Navy issued a Show Cause Letter to Electric Boat requesting that Electric Boat respond to the official’s concerns regarding Electric Boat’s oversight and management with respect to its quality assurance systems for subcontractors and suppliers. Electric Boat responded to the Show Cause Letter and has been engaged in discussions with the U.S. government. Given the current status of these matters, we are unable to express a view regarding the ultimate outcome or, if the outcome is adverse, to estimate an amount or range of reasonably possible loss. Depending on the outcome of these matters, there could be a material impact on our results of operations, financial condition and cash flows. Additionally, various other claims and legal proceedings incidental to the normal course of business are pending or threatened against us. These other matters relate to such issues as government investigations and claims, the protection of the environment, asbestos-related claims and employee-related matters. The nature of litigation is such that we cannot predict the outcome of these other matters. However, based on information currently available, we believe any potential liabilities in these other proceedings, individually or in the aggregate, will not have a material impact on our results of operations, financial condition or cash flows. Environmental We are subject to and affected by a variety of federal, state, local and foreign environmental laws and regulations. We are directly or indirectly involved in environmental investigations or remediation at some of our current and former facilities and third-party sites that we do not own but where we have been designated a Potentially Responsible Party (PRP) by the U.S. Environmental Protection Agency or a state environmental agency. Based on historical experience, we expect that a significant percentage of the total remediation and compliance costs associated with these facilities will continue to be allowable contract costs and, therefore, recoverable under U.S. government contracts. As required, we provide financial assurance for certain sites undergoing or subject to investigation or remediation. We accrue environmental costs when it is probable that a liability has been incurred and the amount can be reasonably estimated. Where applicable, we seek insurance recovery for costs related to environmental liabilities. We do not record insurance recoveries before collection is considered probable. Based on all known facts and analyses, we do not believe that our liability at any individual site, or in the aggregate, arising from such environmental conditions will be material to our results of operations, financial condition or cash flows. We also do not believe that the range of reasonably possible additional loss beyond what has been recorded would be material to our results of operations, financial condition or cash flows. Other Government Contracts. As a government contractor, we are subject to U.S. government audits and investigations relating to our operations, including claims for fines, penalties, and compensatory and treble damages. We believe the outcome of such ongoing government audits and investigations will not have a material impact on our results of operations, financial condition or cash flows. In the performance of our contracts, we routinely request contract modifications that require additional funding from the customer. Most often, these requests are due to customer-directed changes in the scope of work. While we are entitled to recovery of these costs under our contracts, the administrative process with our customer may be protracted. Based on the circumstances, we periodically file requests for equitable adjustment (REAs) that are sometimes converted into claims. In some cases, these requests are disputed by our customer. We believe our outstanding modifications, REAs and other claims will be resolved without material impact to our results of operations, financial condition or cash flows. Letters of Credit and Guarantees. In the ordinary course of business, we have entered into letters of credit, bank guarantees, surety bonds and other similar arrangements with financial institutions and insurance carriers totaling approximately $1.5 billion on July 1, 2018 . In addition, from time to time and in the ordinary course of business, we contractually guarantee the payment or performance of our subsidiaries arising under certain contracts. Aircraft Trade-ins. In connection with orders for new aircraft in contract backlog, our Aerospace segment has outstanding options with some customers to trade in aircraft as partial consideration in their new-aircraft transaction. These trade-in commitments are generally structured to establish the fair market value of the trade-in aircraft at a date generally 45 or fewer days preceding delivery of the new aircraft to the customer. At that time, the customer is required to either exercise the option or allow its expiration. Any excess of the pre-established trade-in price above the fair market value at the time the new aircraft is delivered is treated as a reduction of revenue in the new-aircraft sales transaction. Product Warranties. We provide warranties to our customers associated with certain product sales. We record estimated warranty costs in the period in which the related products are delivered. The warranty liability recorded at each balance sheet date is based generally on the number of months of warranty coverage remaining for the products delivered and the average historical monthly warranty payments. Warranty obligations incurred in connection with long-term production contracts are accounted for within the contract estimates at completion. Our other warranty obligations, primarily for business-jet aircraft, are included in other current and noncurrent liabilities on the Consolidated Balance Sheet. The changes in the carrying amount of warranty liabilities for the six-month periods ended July 1, 2018 , and July 2, 2017 , were as follows: Six Months Ended July 1, 2018 July 2, 2017 Beginning balance $ 467 $ 474 Warranty expense 60 71 Payments (54 ) (52 ) Adjustments (15 ) (28 ) Ending balance $ 458 $ 465

Retirement Plans

Retirement Plans	6 Months Ended
	Jul. 01, 2018
Retirement Benefits [Abstract]
Retirement Plans	RETIREMENT PLANS We provide defined-contribution benefits to eligible employees, as well as some remaining defined-benefit pension and other post-retirement benefits. Net periodic defined-benefit pension and other post-retirement benefit cost (credit) for the three- and six-month periods ended July 1, 2018 , and July 2, 2017 , consisted of the following: Pension Benefits Other Post-retirement Benefits Three Months Ended July 1, 2018 July 2, 2017 July 1, 2018 July 2, 2017 Service cost $ 44 $ 42 $ 2 $ 3 Interest cost 140 113 8 9 Expected return on plan assets (228 ) (170 ) (10 ) (9 ) Recognized net actuarial loss (gain) 93 86 (1 ) (1 ) Amortization of prior service credit (11 ) (16 ) (1 ) (1 ) Net periodic benefit cost (credit) $ 38 $ 55 $ (2 ) $ 1 Six Months Ended Service cost $ 90 $ 84 $ 5 $ 6 Interest cost 254 226 16 17 Expected return on plan assets (407 ) (339 ) (19 ) (17 ) Recognized net actuarial loss (gain) 189 172 (2 ) (2 ) Amortization of prior service credit (22 ) (33 ) (2 ) (2 ) Net periodic benefit cost (credit) $ 104 $ 110 $ (2 ) $ 2 As discussed in Note A, the service cost component of net periodic benefit cost (credit) is reported separately from the other components of net periodic benefit cost (credit) in accordance with ASU 2017-07. Our contractual arrangements with the U.S. government provide for the recovery of contributions to our pension and other post-retirement benefit plans covering employees working in our defense segments. For non-funded plans, our government contracts allow us to recover claims paid. Following payment, these recoverable amounts are allocated to contracts and billed to the customer in accordance with the Cost Accounting Standards (CAS) and specific contractual terms. For some of these plans, the cumulative pension and other post-retirement benefit cost exceeds the amount currently allocable to contracts. To the extent recovery of the cost is considered probable based on our backlog and probable follow-on contracts, we defer the excess in other contract costs in other current assets on the Consolidated Balance Sheet until the cost is allocable to contracts. For other plans, the amount allocated to contracts and included in revenue has exceeded the plans’ cumulative benefit cost. We have similarly deferred recognition of these excess earnings on the Consolidated Balance Sheet. It is our policy to fund our defined-benefit retirement plans in a manner that optimizes the tax deductibility and contract recovery of contributions considered within our capital deployment framework. Therefore, we may make discretionary contributions in addition to the required contributions determined in accordance with IRS regulations. In addition to our required contributions of approximately $315 in 2018, in the first quarter of 2018, we announced our intent to make additional discretionary contributions, resulting in total pension plan contributions of approximately $570 in 2018. The additional contributions were considered significant events in accordance with ASC Topic 715 and, therefore, triggered a remeasurement of the 2018 net periodic defined-benefit pension cost. The remeasured defined-benefit pension cost amount is reflected in the table above. Additionally, the net periodic defined-benefit pension and OPEB cost (credit) amounts in the table above reflect the inclusion of legacy CSRA plans assumed in connection with the acquisition as of the acquisition date.

Segment Information

Segment Information	6 Months Ended
	Jul. 01, 2018
Segment Reporting [Abstract]
Segment Information	SEGMENT INFORMATION We have five operating segments, Aerospace, Combat Systems, Information Technology, Mission Systems and Marine Systems. We organize our segments in accordance with the nature of products and services offered. We measure each segment’s profitability based on operating earnings. As a result, we do not allocate net interest, other income and expense items, and income taxes to our segments. Summary financial information for each of our segments follows: Revenue Operating Earnings Revenue from U.S. Government Three Months Ended July 1, 2018 July 2, 2017 July 1, 2018 July 2, 2017 July 1, 2018 July 2, 2017 Aerospace $ 1,895 $ 2,078 $ 386 $ 421 $ 108 $ 41 Combat Systems 1,534 1,414 236 225 746 744 Information Technology 2,442 1,052 156 87 2,370 981 Mission Systems 1,147 1,052 153 153 908 840 Marine Systems 2,168 2,079 195 178 2,072 2,056 Corporate — — (38 ) 3 — — Total $ 9,186 $ 7,675 $ 1,088 $ 1,067 $ 6,204 $ 4,662 Six Months Ended Aerospace $ 3,720 $ 4,152 $ 732 $ 860 $ 165 $ 90 Combat Systems 2,974 2,701 460 430 1,423 1,463 Information Technology 3,580 2,110 257 177 3,448 1,974 Mission Systems 2,245 2,140 299 299 1,775 1,699 Marine Systems 4,202 4,013 379 339 4,051 3,951 Corporate — — (31 ) 8 — — Total $ 16,721 $ 15,116 $ 2,096 $ 2,113 $ 10,862 $ 9,177 Corporate operating results have two primary components: pension and other post-retirement benefit income, and stock option expense. ASU 2017-07 requires the non-service cost components of pension and other post-retirement benefit cost (e.g., interest cost) to be reported in other income (expense) in the Consolidated Statement of Earnings. In our defense segments, pension and other post-retirement benefit costs are allocable contract costs. For these segments, we report the offset for the non-service cost components in Corporate operating results. The second quarter and first six months of 2018 also included one-time charges of approximately $45 associated with the costs to complete the CSRA acquisition. The following is additional summary financial information for each of our segments: Capital Expenditures Depreciation and Amortization Six Months Ended July 1, 2018 July 2, 2017 July 1, 2018 July 2, 2017 Aerospace $ 102 $ 50 $ 72 $ 77 Combat Systems 26 31 42 42 Information Technology 21 4 120 15 Mission Systems 26 25 33 29 Marine Systems 81 37 55 51 Corporate 23 6 5 6 Total $ 279 $ 153 $ 327 $ 220 Identifiable assets for each of our segments follows: July 1, 2018 December 31, 2017 Aerospace $ 10,990 $ 10,126 Combat Systems 10,110 9,846 Information Technology 14,918 3,021 Mission Systems 6,079 5,856 Marine Systems 2,917 2,906 Corporate* 2,138 3,291 Total $ 47,152 $ 35,046 * Corporate identifiable assets are primarily cash and equivalents.

Condensed Consolidating Financi

Condensed Consolidating Financial Statements	6 Months Ended
	Jul. 01, 2018
Consolidating Financial Statements [Abstract]
Condensed Consolidating Financial Statements	CONDENSED CONSOLIDATING FINANCIAL STATEMENTS The fixed- and floating-rate notes described in Note I are fully and unconditionally guaranteed on an unsecured, joint and several basis by several of our 100% -owned subsidiaries (the guarantors). The following condensed consolidating financial statements illustrate the composition of the parent, the guarantors on a combined basis (each guarantor together with its majority-owned subsidiaries) and all other subsidiaries on a combined basis. CONDENSED CONSOLIDATING STATEMENT OF EARNINGS (UNAUDITED) Three Months Ended July 1, 2018 Parent Guarantors on a Combined Basis Other Subsidiaries on a Combined Basis Consolidating Adjustments Total Consolidated Revenue $ — $ 6,793 $ 2,393 $ — $ 9,186 Cost of sales 9 (5,475 ) (2,043 ) — (7,509 ) G&A (45 ) (418 ) (126 ) — (589 ) Operating earnings (36 ) 900 224 — 1,088 Interest, net (94 ) (1 ) (8 ) — (103 ) Other, net (38 ) 4 19 — (15 ) Earnings before income tax (168 ) 903 235 — 970 Provision for income tax, net 43 (178 ) (49 ) — (184 ) Equity in net earnings of subsidiaries 911 — — (911 ) — Net earnings $ 786 $ 725 $ 186 $ (911 ) $ 786 Comprehensive income $ 619 $ 740 $ (41 ) $ (699 ) $ 619 Three Months Ended July 2, 2017 Revenue $ — $ 6,732 $ 943 $ — $ 7,675 Cost of sales 14 (5,413 ) (715 ) — (6,114 ) G&A (12 ) (406 ) (76 ) — (494 ) Operating earnings 2 913 152 — 1,067 Interest, net (23 ) — (1 ) — (24 ) Other, net (15 ) 3 1 — (11 ) Earnings before income tax (36 ) 916 152 — 1,032 Provision for income tax, net 26 (301 ) (8 ) — (283 ) Equity in net earnings of subsidiaries 759 — — (759 ) — Net earnings $ 749 $ 615 $ 144 $ (759 ) $ 749 Comprehensive income $ 1,089 $ 642 $ 427 $ (1,069 ) $ 1,089 CONDENSED CONSOLIDATING STATEMENT OF EARNINGS (UNAUDITED) Six Months Ended July 1, 2018 Parent Guarantors on a Combined Basis Other Subsidiaries on a Combined Basis Consolidating Adjustments Total Consolidated Revenue $ — $ 13,277 $ 3,444 $ — $ 16,721 Cost of sales 28 (10,677 ) (2,850 ) — (13,499 ) G&A (58 ) (854 ) (214 ) — (1,126 ) Operating earnings (30 ) 1,746 380 — 2,096 Interest, net (120 ) (1 ) (9 ) — (130 ) Other, net (62 ) 5 21 — (36 ) Earnings before income tax (212 ) 1,750 392 — 1,930 Provision for income tax, net 85 (343 ) (87 ) — (345 ) Equity in net earnings of subsidiaries 1,712 — — (1,712 ) — Net earnings $ 1,585 $ 1,407 $ 305 $ (1,712 ) $ 1,585 Comprehensive income $ 1,485 $ 1,425 $ 96 $ (1,521 ) $ 1,485 Six Months Ended July 2, 2017 Revenue $ — $ 13,276 $ 1,840 $ — $ 15,116 Cost of sales 31 (10,665 ) (1,403 ) — (12,037 ) G&A (22 ) (792 ) (152 ) — (966 ) Operating earnings 9 1,819 285 — 2,113 Interest, net (47 ) — (2 ) — (49 ) Other, net (30 ) 6 2 — (22 ) Earnings before income tax (68 ) 1,825 285 — 2,042 Provision for income tax, net 93 (594 ) (29 ) — (530 ) Equity in net earnings of subsidiaries 1,487 — — (1,487 ) — Net earnings $ 1,512 $ 1,231 $ 256 $ (1,487 ) $ 1,512 Comprehensive income $ 1,977 $ 1,259 $ 634 $ (1,893 ) $ 1,977 CONDENSED CONSOLIDATING BALANCE SHEET (UNAUDITED) July 1, 2018 Parent Guarantors on a Combined Basis Other Subsidiaries on a Combined Basis Consolidating Adjustments Total Consolidated ASSETS Current assets: Cash and equivalents $ 1,329 $ — $ 533 $ — $ 1,862 Accounts receivable — 1,118 2,756 — 3,874 Unbilled receivables — 2,783 4,342 — 7,125 Inventories — 5,752 138 — 5,890 Other current assets 132 408 536 — 1,076 Total current assets 1,461 10,061 8,305 — 19,827 Noncurrent assets: Property, plant and equipment (PP&E) 240 6,973 1,875 — 9,088 Accumulated depreciation of PP&E (79 ) (4,006 ) (824 ) — (4,909 ) Intangible assets, net — 272 2,466 — 2,738 Goodwill — 8,335 11,403 — 19,738 Other assets 246 236 188 — 670 Investment in subsidiaries 56,387 — — (56,387 ) — Total noncurrent assets 56,794 11,810 15,108 (56,387 ) 27,325 Total assets $ 58,255 $ 21,871 $ 23,413 $ (56,387 ) $ 47,152 LIABILITIES AND SHAREHOLDERS’ EQUITY Current liabilities: Short-term debt and current portion of long-term debt $ 2,789 $ 1 $ 91 $ — $ 2,881 Customer advances and deposits — 4,395 2,824 — 7,219 Other current liabilities 581 3,550 2,342 — 6,473 Total current liabilities 3,370 7,946 5,257 — 16,573 Noncurrent liabilities: Long-term debt 11,385 5 7 — 11,397 Other liabilities 2,293 3,197 1,698 — 7,188 Total noncurrent liabilities 13,678 3,202 1,705 — 18,585 Intercompany 29,213 (28,715 ) (498 ) — — Shareholders’ equity: Common stock 482 6 2,126 (2,132 ) 482 Other shareholders’ equity 11,512 39,432 14,823 (54,255 ) 11,512 Total shareholders’ equity 11,994 39,438 16,949 (56,387 ) 11,994 Total liabilities and shareholders’ equity $ 58,255 $ 21,871 $ 23,413 $ (56,387 ) $ 47,152 CONDENSED CONSOLIDATING BALANCE SHEET December 31, 2017 Parent Guarantors on a Combined Basis Other Subsidiaries on a Combined Basis Consolidating Adjustments Total Consolidated ASSETS Current assets: Cash and equivalents $ 1,930 $ — $ 1,053 $ — $ 2,983 Accounts receivable — 1,259 2,358 — 3,617 Unbilled receivables — 2,547 2,693 — 5,240 Inventories — 5,216 87 — 5,303 Other current assets 351 461 373 — 1,185 Total current assets 2,281 9,483 6,564 — 18,328 Noncurrent assets: PP&E 221 6,779 1,237 — 8,237 Accumulated depreciation of PP&E (75 ) (3,869 ) (776 ) — (4,720 ) Intangible assets, net — 287 415 — 702 Goodwill — 8,320 3,594 — 11,914 Other assets 199 232 154 — 585 Investment in subsidiaries 44,887 — — (44,887 ) — Total noncurrent assets 45,232 11,749 4,624 (44,887 ) 16,718 Total assets $ 47,513 $ 21,232 $ 11,188 $ (44,887 ) $ 35,046 LIABILITIES AND SHAREHOLDERS’ EQUITY Current liabilities: Short-term debt and current portion of long-term debt $ — $ 1 $ 1 $ — $ 2 Customer advances and deposits — 4,180 2,812 — 6,992 Other current liabilities 561 3,758 1,786 — 6,105 Total current liabilities 561 7,939 4,599 — 13,099 Noncurrent liabilities: Long-term debt 3,950 21 9 — 3,980 Other liabilities 2,451 3,473 608 — 6,532 Total noncurrent liabilities 6,401 3,494 617 — 10,512 Intercompany 29,116 (28,494 ) (622 ) — — Shareholders’ equity: Common stock 482 6 2,126 (2,132 ) 482 Other shareholders’ equity 10,953 38,287 4,468 (42,755 ) 10,953 Total shareholders’ equity 11,435 38,293 6,594 (44,887 ) 11,435 Total liabilities and shareholders’ equity $ 47,513 $ 21,232 $ 11,188 $ (44,887 ) $ 35,046 CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS (UNAUDITED) Six Months Ended July 1, 2018 Parent Guarantors on a Combined Basis Other Subsidiaries on a Combined Basis Consolidating Adjustments Total Consolidated Net cash provided by operating activities* $ 41 $ 468 $ (218 ) $ — $ 291 Cash flows from investing activities: Business acquisitions, net of cash acquired (9,749 ) (74 ) (216 ) — (10,039 ) Capital expenditures (22 ) (215 ) (42 ) — (279 ) Other, net 2 72 — — 74 Net cash used by investing activities (9,769 ) (217 ) (258 ) — (10,244 ) Cash flows from financing activities: Proceeds from fixed-rate notes 6,461 — — — 6,461 Proceeds from commercial paper, net 2,786 — — — 2,786 Proceeds from floating-rate notes 1,000 — — — 1,000 Dividends paid (526 ) — — — (526 ) Repayment of CSRA accounts receivable purchase — — (450 ) — (450 ) Purchases of common stock (436 ) — — — (436 ) Other, net (45 ) — 48 — 3 Net cash provided by financing activities 9,240 — (402 ) — 8,838 Net cash used by discontinued operations (6 ) — — — (6 ) Cash sweep/funding by parent (107 ) (251 ) 358 — — Net decrease in cash and equivalents (601 ) — (520 ) — (1,121 ) Cash and equivalents at beginning of period 1,930 — 1,053 — 2,983 Cash and equivalents at end of period $ 1,329 $ — $ 533 $ — $ 1,862 Six Months Ended July 2, 2017 Net cash provided by operating activities* $ 214 $ 847 $ (51 ) $ — $ 1,010 Cash flows from investing activities: Capital expenditures (6 ) (114 ) (33 ) — (153 ) Other, net 1 8 (51 ) — (42 ) Net cash used by investing activities (5 ) (106 ) (84 ) — (195 ) Cash flows from financing activities: Purchases of common stock (901 ) — — — (901 ) Dividends paid (483 ) — — — (483 ) Other, net 21 (1 ) 88 — 108 Net cash used by financing activities (1,363 ) (1 ) 88 — (1,276 ) Net cash used by discontinued operations (17 ) — — — (17 ) Cash sweep/funding by parent 764 (740 ) (24 ) — — Net decrease in cash and equivalents (407 ) — (71 ) — (478 ) Cash and equivalents at beginning of period 1,254 — 1,080 — 2,334 Cash and equivalents at end of period $ 847 $ — $ 1,009 $ — $ 1,856 * Continuing operations only.

Summary of Significant Accoun23

Summary of Significant Accounting Policies (Policies)	6 Months Ended
	Jul. 01, 2018
Accounting Policies [Abstract]
Segment Information	For segment reporting purposes, concurrent with the acquisition, our Information Systems and Technology operating segment was reorganized into the Information Technology and Mission Systems segments. Our company now has five operating segments: Aerospace, Combat Systems, Information Technology, Mission Systems and Marine Systems. We collectively refer to Combat Systems, Information Technology, Mission Systems and Marine Systems as our defense segments. Prior-period segment information has been restated for this change. We organize our segments in accordance with the nature of products and services offered. We measure each segment’s profitability based on operating earnings. As a result, we do not allocate net interest, other income and expense items, and income taxes to our segments.
Basis of Consolidation and Classification	Basis of Consolidation and Classification. The unaudited Consolidated Financial Statements include the accounts of General Dynamics Corporation and our wholly owned and majority-owned subsidiaries. We eliminate all inter-company balances and transactions in the unaudited Consolidated Financial Statements. Some prior-year amounts have been reclassified among financial statement accounts or disclosures to conform to the current-year presentation. Consistent with industry practice, we classify assets and liabilities related to long-term contracts as current, even though some of these amounts may not be realized within one year.
Interim Financial Statements	Interim Financial Statements. The unaudited Consolidated Financial Statements have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission. These rules and regulations permit some of the information and footnote disclosures included in financial statements prepared in accordance with U.S. generally accepted accounting principles (GAAP) to be condensed or omitted. Our fiscal quarters are 13 weeks in length. Because our fiscal year ends on December 31, the number of days in our first and fourth quarters varies slightly from year to year. Operating results for the three- and six-month periods ended July 1, 2018 , are not necessarily indicative of the results that may be expected for the year ending December 31, 2018 . The unaudited Consolidated Financial Statements contain all adjustments that are of a normal recurring nature necessary for a fair presentation of our results of operations and financial condition for the three- and six-month periods ended July 1, 2018 , and July 2, 2017 . These unaudited Consolidated Financial Statements should be read in conjunction with the Consolidated Financial Statements and notes thereto included in our Annual Report on Form 10-K for the year ended December 31, 2017 .
Accounting Standards Updates	Accounting Standards Updates . On January 1, 2018, we adopted the following accounting standards issued by the Financial Accounting Standards Board (FASB): • ASU 2016-01, Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities. ASU 2016-01 addresses certain aspects of recognition, measurement, presentation and disclosure of financial instruments. Specific to our business, ASU 2016-01 requires equity investments to be measured at fair value with changes in fair value recognized in net income. The ASU eliminates the available-for-sale classification for equity investments that recognized changes in fair value as a component of other comprehensive income. We adopted the standard on a modified retrospective basis on January 1, 2018, and recognized the cumulative effect as a $24 increase to retained earnings on the date of adoption. • ASU 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments. ASU 2016-15 is intended to reduce diversity in practice in how certain cash receipts and cash payments are presented and classified in the Consolidated Statement of Cash Flows by providing guidance on eight specific cash flow issues. We adopted the standard retrospectively on January 1, 2018. The adoption of the ASU did not have an effect on our cash flows for the six-month period ended July 2, 2017 . • ASU 2017-07, Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost. ASU 2017-07 requires the service cost component of net benefit cost to be reported separately from the other components of net benefit cost in the Consolidated Statement of Earnings. We adopted the standard retrospectively on January 1, 2018. Our restated operating earnings increased $11 and $22 for the three- and six-month periods ended July 2, 2017 , respectively, due to the reclassification of the non-service cost components of net benefit cost, and other income decreased by the same amount, with no impact to net earnings. • ASU 2018-02, Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. ASU 2018-02 allows the reclassification from accumulated other comprehensive income to retained earnings of stranded tax effects resulting from the implementation of the Tax Cuts and Jobs Act (tax reform) enacted on December 22, 2017. We adopted the standard on January 1, 2018, and recognized a $614 increase to retained earnings on the date of adoption. For a discussion of other accounting standards that have been issued by the FASB but are not yet effective, refer to the Accounting Standards Updates section in our Annual Report on Form 10-K for the year ended December 31, 2017 .
Revenue Recognition	Contract Balances. The timing of revenue recognition, billings and cash collections results in billed accounts receivable, unbilled receivables (contract assets), and customer advances and deposits (contract liabilities) on the Consolidated Balance Sheet. In our defense segments, amounts are billed as work progresses in accordance with agreed-upon contractual terms, either at periodic intervals (e.g., biweekly or monthly) or upon achievement of contractual milestones. Generally, billing occurs subsequent to revenue recognition, resulting in contract assets. However, we sometimes receive advances or deposits from our customers, particularly on our international contracts, before revenue is recognized, resulting in contract liabilities. These assets and liabilities are reported on the Consolidated Balance Sheet on a contract-by-contract basis at the end of each reporting period. In our Aerospace segment, we generally receive deposits from customers upon contract execution and upon achievement of contractual milestones. These deposits are liquidated when revenue is recognized. The majority of our revenue is derived from long-term contracts and programs that can span several years. We account for revenue in accordance with ASC Topic 606, Revenue from Contracts with Customers. Performance Obligations. A performance obligation is a promise in a contract to transfer a distinct good or service to the customer, and is the unit of account in ASC Topic 606. A contract’s transaction price is allocated to each distinct performance obligation and recognized as revenue when, or as, the performance obligation is satisfied. The majority of our contracts have a single performance obligation as the promise to transfer the individual goods or services is not separately identifiable from other promises in the contracts and is, therefore, not distinct. Some of our contracts have multiple performance obligations, most commonly due to the contract covering multiple phases of the product lifecycle (development, production, maintenance and support). For contracts with multiple performance obligations, we allocate the contract’s transaction price to each performance obligation using our best estimate of the standalone selling price of each distinct good or service in the contract. The primary method used to estimate standalone selling price is the expected cost plus a margin approach, under which we forecast our expected costs of satisfying a performance obligation and then add an appropriate margin for that distinct good or service. Contract modifications are routine in the performance of our contracts. Contracts are often modified to account for changes in contract specifications or requirements. In most instances, contract modifications are for goods or services that are not distinct, and, therefore, are accounted for as part of the existing contract. Our performance obligations are satisfied over time as work progresses or at a point in time. Revenue from products and services transferred to customers over time accounted for 78% and 75% of our revenue for the three- and six-month periods ended July 1, 2018 , and 71% and 70% of our revenue for the three- and six-month periods ended July 2, 2017 , respectively. Substantially all of our revenue in the defense segments is recognized over time because control is transferred continuously to our customers. Typically, revenue is recognized over time using costs incurred to date relative to total estimated costs at completion to measure progress toward satisfying our performance obligations. Incurred cost represents work performed, which corresponds with, and thereby best depicts, the transfer of control to the customer. Contract costs include labor, material, overhead and, when appropriate, G&A expenses. Revenue from goods and services transferred to customers at a point in time accounted for 22% and 25% of our revenue for the three- and six-month periods ended July 1, 2018 , and 29% and 30% of our revenue for the three- and six-month periods ended July 2, 2017 , respectively. The majority of our revenue recognized at a point in time is for the manufacture of business-jet aircraft in our Aerospace segment. Revenue on these contracts is recognized when the customer obtains control of the asset, which is generally upon delivery and acceptance by the customer of the fully outfitted aircraft. On July 1, 2018 , we had $66.3 billion of remaining performance obligations, which we also refer to as total backlog. We expect to recognize approximately 60% of our remaining performance obligations as revenue by year-end 2019, an additional 25% by year-end 2021 and the balance thereafter. On December 31, 2017 , we had $63.2 billion of remaining performance obligations, and on December 31, 2017 , we expected to recognize approximately 40% of these remaining performance obligations as revenue in 2018, an additional 40% by year-end 2020 and the balance thereafter. Contract Estimates. Accounting for long-term contracts and programs involves the use of various techniques to estimate total contract revenue and costs. For long-term contracts, we estimate the profit on a contract as the difference between the total estimated revenue and expected costs to complete a contract and recognize that profit over the life of the contract. Contract estimates are based on various assumptions to project the outcome of future events that often span several years. These assumptions include labor productivity and availability; the complexity of the work to be performed; the cost and availability of materials; the performance of subcontractors; and the availability and timing of funding from the customer. The nature of our contracts gives rise to several types of variable consideration, including claims and award and incentive fees. We include in our contract estimates additional revenue for submitted contract modifications or claims against the customer when we believe we have an enforceable right to the modification or claim, the amount can be estimated reliably and its realization is probable. In evaluating these criteria, we consider the contractual/legal basis for the claim, the cause of any additional costs incurred, the reasonableness of those costs and the objective evidence available to support the claim. We include award or incentive fees in the estimated transaction price when there is a basis to reasonably estimate the amount of the fee. These estimates are based on historical award experience, anticipated performance and our best judgment at the time. Because of our certainty in estimating these amounts, they are included in the transaction price of our contracts and the associated remaining performance obligations. As a significant change in one or more of these estimates could affect the profitability of our contracts, we review and update our contract-related estimates regularly. We recognize adjustments in estimated profit on contracts under the cumulative catch-up method. Under this method, the impact of the adjustment on profit recorded to date on a contract is recognized in the period the adjustment is identified. Revenue and profit in future periods of contract performance are recognized using the adjusted estimate. If at any time the estimate of contract profitability indicates an anticipated loss on the contract, we recognize the total loss in the period it is identified. The impact of adjustments in contract estimates on our operating earnings can be reflected in either operating costs and expenses or revenue.
Earnings Per Share	We compute basic earnings per share (EPS) using net earnings for the period and the weighted average number of common shares outstanding during the period.
Fair Value of Financial Instruments	Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in the principal or most advantageous market in an orderly transaction between marketplace participants. Various valuation approaches can be used to determine fair value, each requiring different valuation inputs. The following hierarchy classifies the inputs used to determine fair value into three levels: • Level 1 - quoted prices in active markets for identical assets or liabilities; • Level 2 - inputs, other than quoted prices, observable by a marketplace participant either directly or indirectly; and • Level 3 - unobservable inputs significant to the fair value measurement.
Tax Uncertainties	Tax Uncertainties. For all periods open to examination by tax authorities, we periodically assess our liabilities and contingencies based on the latest available information. Where we believe there is more than a 50% chance that our tax position will not be sustained, we record our best estimate of the resulting tax liability, including interest, in the Consolidated Financial Statements. We include any interest or penalties incurred in connection with income taxes as part of income tax expense. The total amount of these tax liabilities on July 1, 2018 , was not material to our results of operations, financial condition or cash flows. We participate in the Internal Revenue Service (IRS) Compliance Assurance Process (CAP), a real-time audit of our consolidated federal corporate income tax return. The IRS has examined our consolidated federal income tax returns through 2016. We do not expect the resolution of tax matters for open years to have a material impact on our results of operations, financial condition, cash flows or effective tax rate. Based on all known facts and circumstances and current tax law, we believe the total amount of any unrecognized tax benefits on July 1, 2018 , was not material to our results of operations, financial condition or cash flows, and if recognized, would not have a material impact on our effective tax rate. In addition, there are no tax positions for which it is reasonably possible that the unrecognized tax benefits will vary significantly over the next 12 months, producing, individually or in the aggregate, a material effect on our results of operations, financial condition or cash flows.
Unbilled Receivables	Unbilled receivables represent revenue recognized on long-term contracts (contract costs and estimated profits) less associated advances and progress billings. These amounts will be billed in accordance with the agreed-upon contractual terms or upon achievement of contractual milestones.
Inventories	The majority of our inventories are for business-jet aircraft. Our inventories are stated at the lower of cost or net realizable value. Work in process represents largely labor, material and overhead costs associated with aircraft in the manufacturing process and is based primarily on the estimated average unit cost in a production lot. Raw materials are valued primarily on the first-in, first-out method. We record pre-owned aircraft acquired in connection with the sale of new aircraft at the lower of the trade-in value or the estimated net realizable value.
Derivative Instruments and Hedging Activities	We are exposed to market risk, primarily from foreign currency exchange rates, interest rates, commodity prices and investments. We may use derivative financial instruments to hedge some of these risks as described below. Foreign Currency Risk. Our foreign currency exchange rate risk relates to receipts from customers, payments to suppliers and inter-company transactions denominated in foreign currencies. To the extent possible, we include terms in our contracts that are designed to protect us from this risk. Otherwise, we enter into derivative financial instruments, principally foreign currency forward purchase and sale contracts, designed to offset and minimize our risk. The dollar-weighted two -year average maturity of these instruments generally matches the duration of the activities that are at risk. Hedging Activities. We had $6 billion in notional forward exchange and interest rate swap contracts outstanding on July 1, 2018 , and $4.3 billion on December 31, 2017 . These derivative financial instruments are cash flow hedges, and are reported on the Consolidated Balance Sheet at fair value. See Note E for additional details. Changes in fair value (gains and losses) related to derivative financial instruments that qualify as cash flow hedges are deferred in other comprehensive loss (OCL) until the underlying transaction is reflected in earnings. Gains and losses on derivative financial instruments that do not qualify for hedge accounting are recorded each period in the Consolidated Statement of Earnings in operating costs and expenses or interest expense. The gains and losses on derivative financial instruments that do not qualify for hedge accounting generally offset losses and gains on the assets and liabilities being hedged. Gains and losses resulting from hedge ineffectiveness are recognized in the Consolidated Statement of Earnings for all derivative financial instruments, regardless of designation. Interest Rate Risk. Our financial instruments subject to interest rate risk include variable-rate commercial paper and fixed-rate long-term debt obligations. However, the risk associated with these instruments is not material. Our floating-rate long-term debt obligations are also subject to interest rate risk. However, as described in Note I, we entered into derivative financial instruments, specifically interest rate swap contracts, to eliminate our floating-rate interest risk. Commodity Price Risk. We are subject to rising labor and commodity price risk, primarily on long-term, fixed-price contracts. To the extent possible, we include terms in our contracts that are designed to protect us from these risks. Some of the protective terms included in our contracts are considered derivative financial instruments but are not accounted for separately, because they are clearly and closely related to the host contract. We have not entered into any material commodity hedging contracts but may do so as circumstances warrant. We do not believe that changes in labor or commodity prices will have a material impact on our results of operations or cash flows. Investment Risk. Our investment policy allows for purchases of fixed-income securities with an investment-grade rating and a maximum maturity of up to five years .
Foreign Currency and Financial Statement Translation	Foreign Currency Financial Statement Translation. We translate foreign currency balance sheets from our international businesses’ functional currency (generally the respective local currency) to U.S. dollars at the end-of-period exchange rates, and statements of earnings at the average exchange rates for each period. The resulting foreign currency translation adjustments are a component of OCL. We do not hedge the fluctuation in reported revenue and earnings resulting from the translation of these international operations’ results into U.S. dollars. The impact of translating our non-U.S. operations’ revenue into U.S. dollars was not material to our results of operations for the three- and six-month periods ended July 1, 2018 , or July 2, 2017 . In addition, the effect of changes in foreign exchange rates on non-U.S. cash balances was not material for the six -month periods ended July 1, 2018 , and July 2, 2017 .
Commitments and Contingencies	Environmental We are subject to and affected by a variety of federal, state, local and foreign environmental laws and regulations. We are directly or indirectly involved in environmental investigations or remediation at some of our current and former facilities and third-party sites that we do not own but where we have been designated a Potentially Responsible Party (PRP) by the U.S. Environmental Protection Agency or a state environmental agency. Based on historical experience, we expect that a significant percentage of the total remediation and compliance costs associated with these facilities will continue to be allowable contract costs and, therefore, recoverable under U.S. government contracts. As required, we provide financial assurance for certain sites undergoing or subject to investigation or remediation. We accrue environmental costs when it is probable that a liability has been incurred and the amount can be reasonably estimated. Where applicable, we seek insurance recovery for costs related to environmental liabilities. We do not record insurance recoveries before collection is considered probable. Based on all known facts and analyses, we do not believe that our liability at any individual site, or in the aggregate, arising from such environmental conditions will be material to our results of operations, financial condition or cash flows. We also do not believe that the range of reasonably possible additional loss beyond what has been recorded would be material to our results of operations, financial condition or cash flows.
Product Warranties	Product Warranties. We provide warranties to our customers associated with certain product sales. We record estimated warranty costs in the period in which the related products are delivered. The warranty liability recorded at each balance sheet date is based generally on the number of months of warranty coverage remaining for the products delivered and the average historical monthly warranty payments. Warranty obligations incurred in connection with long-term production contracts are accounted for within the contract estimates at completion. Our other warranty obligations, primarily for business-jet aircraft, are included in other current and noncurrent liabilities on the Consolidated Balance Sheet.
Retirement Plans	Our contractual arrangements with the U.S. government provide for the recovery of contributions to our pension and other post-retirement benefit plans covering employees working in our defense segments. For non-funded plans, our government contracts allow us to recover claims paid. Following payment, these recoverable amounts are allocated to contracts and billed to the customer in accordance with the Cost Accounting Standards (CAS) and specific contractual terms. For some of these plans, the cumulative pension and other post-retirement benefit cost exceeds the amount currently allocable to contracts. To the extent recovery of the cost is considered probable based on our backlog and probable follow-on contracts, we defer the excess in other contract costs in other current assets on the Consolidated Balance Sheet until the cost is allocable to contracts. For other plans, the amount allocated to contracts and included in revenue has exceeded the plans’ cumulative benefit cost. We have similarly deferred recognition of these excess earnings on the Consolidated Balance Sheet. It is our policy to fund our defined-benefit retirement plans in a manner that optimizes the tax deductibility and contract recovery of contributions considered within our capital deployment framework. Therefore, we may make discretionary contributions in addition to the required contributions determined in accordance with IRS regulations. We provide defined-contribution benefits to eligible employees, as well as some remaining defined-benefit pension and other post-retirement benefits.

Acquisitions and Divestitures24

Acquisitions and Divestitures, Goodwill and Intangible Assets (Tables)	6 Months Ended
	Jul. 01, 2018
Business Combinations, Goodwill and Intangible Assets Disclosure [Abstract]
Acquisition Consideration and Fair Value of Net Assets Acquired	The cash purchase price totaled $9.7 billion and consisted of the following: CSRA shares outstanding (in millions) 165.4 Cash consideration per CSRA share $ 41.25 Cash paid to purchase outstanding CSRA shares $ 6,825 Cash paid to extinguish CSRA debt 2,846 Cash settlement of outstanding CSRA stock options and restricted stock units 78 Total purchase price $ 9,749
Estimated Fair Value of Assets Acquired and Liabilities Assumed on Acquisition Date	The following table summarizes the preliminary allocation of the purchase price to the estimated fair values of the assets acquired and liabilities assumed on the acquisition date, with the excess recorded as goodwill: Cash and equivalents $ 45 Accounts receivable 156 Unbilled receivables 807 Other current assets 190 Property, plant and equipment, net 685 Intangible assets, net 2,069 Goodwill 7,807 Other noncurrent assets 19 Total assets $ 11,778 Account payable $ (135 ) Customer advances and deposits (151 ) Current capital lease obligation (51 ) Other current liabilities (542 ) Noncurrent capital lease obligation (207 ) Noncurrent deferred tax liability (421 ) Other noncurrent liabilities (522 ) Total liabilities $ (2,029 ) Net assets acquired $ 9,749
Expected Amortization Expense Associated With Intangible Assets Acquired	We expect to record amortization expense associated with these intangible assets over the next five years as follows: 2018 (9 months post-acquisition) $ 188 2019 204 2020 195 2021 154 2022 136
Unaudited Pro Forma Information	Three Months Ended Six Months Ended July 1, 2018 July 2, 2017 July 1, 2018 July 2, 2017 Revenue $ 9,186 $ 8,853 $ 18,023 $ 17,497 Net earnings 804 756 1,534 1,489 Diluted earnings per share $ 2.68 $ 2.48 $ 5.10 $ 4.86
Changes In The Carrying Amount of Goodwill By Reporting Unit	The changes in the carrying amount of goodwill by reporting unit were as follows: Aerospace Combat Systems Information Systems and Technology Information Technology Mission Systems Marine Systems Total Goodwill December 31, 2017 (a) $ 2,638 $ 2,677 $ 6,302 $ — $ — $ 297 $ 11,914 Acquisitions/ — — 16 — — — 16 Other (c) 40 (14 ) (1 ) — — — 25 April 1, 2018 (a) 2,678 2,663 6,317 — — 297 11,955 Change in reporting unit composition (d) — — (6,317 ) 2,076 4,241 — — Acquisitions/ divestitures (b) 149 — — 7,752 1 — 7,902 Other (c) (71 ) (36 ) — — (12 ) — (119 ) July 1, 2018 (e) $ 2,756 $ 2,627 $ — $ 9,828 $ 4,230 $ 297 $ 19,738 (a) Goodwill in the Information Systems and Technology reporting unit is net of $1.9 billion of accumulated impairment losses. (b) Includes adjustments during the purchase price allocation period. Activity in the first quarter of 2018 also includes an allocation of goodwill associated with the sale of the commercial health products business discussed above. (c) Consists primarily of adjustments for foreign currency translation. (d) Concurrent with the acquisition of CSRA, we reorganized our Information Systems and Technology operating segment into the Information Technology and Mission Systems segments. See Note A for further discussion of the segment reorganization. This reorganization similarly changed the composition of our reporting units. Accordingly, goodwill of the Information Systems and Technology reporting unit was reassigned to the Information Technology and Mission Systems reporting units using a relative fair value allocation approach as of the date of the reorganization. (e) Goodwill in the Information Technology and Mission Systems reporting units is net of $632 and $1.3 billion of accumulated impairment losses, respectively.
Intangible Assets	Intangible assets consisted of the following: Gross Carrying Amount (a) Accumulated Amortization Net Carrying Amount Gross Carrying Amount (a) Accumulated Amortization Net Carrying Amount July 1, 2018 December 31, 2017 Contract and program intangible assets (b) $ 3,793 $ (1,394 ) $ 2,399 $ 1,684 $ (1,320 ) $ 364 Trade names and trademarks 458 (166 ) 292 465 (160 ) 305 Technology and software 158 (112 ) 46 137 (105 ) 32 Other intangible assets 155 (154 ) 1 155 (154 ) 1 Total intangible assets $ 4,564 $ (1,826 ) $ 2,738 $ 2,441 $ (1,739 ) $ 702 (a) Change in gross carrying amounts consists primarily of adjustments for acquired intangible assets and foreign currency translation. (b) Consists of acquired backlog and probable follow-on work and associated customer relationships.

Revenue (Tables)

Revenue (Tables)	6 Months Ended
	Jul. 01, 2018
Revenue Recognition [Abstract]
Schedule of Impact of Adjustments in Contract Estimates	revenue, operating earnings and diluted earnings per share as follows: Three Months Ended Six Months Ended July 1, 2018 July 2, 2017 July 1, 2018 July 2, 2017 Revenue $ 91 $ 90 $ 206 $ 162 Operating earnings 83 121 180 171 Diluted earnings per share $ 0.22 $ 0.26 $ 0.47 $ 0.36
Revenue by Major Product Line	Revenue by major products and services was as follows: Three Months Ended Six Months Ended July 1, 2018 July 2, 2017 July 1, 2018 July 2, 2017 Aircraft manufacturing and completions $ 1,362 $ 1,600 $ 2,728 $ 3,229 Aircraft services 531 445 982 880 Pre-owned aircraft 2 33 10 43 Total Aerospace 1,895 2,078 3,720 4,152 Wheeled combat and tactical vehicles 644 566 1,269 1,126 Weapons systems, armament and munitions 443 409 826 755 Tanks and tracked vehicles 346 278 677 525 Engineering and other services 101 161 202 295 Total Combat Systems 1,534 1,414 2,974 2,701 Information technology services 2,442 1,052 3,580 2,110 Total Information Technology 2,442 1,052 3,580 2,110 Platform systems and sensors 383 393 774 783 Intelligence, surveillance and reconnaissance systems 372 333 749 662 Communication systems 392 326 722 695 Total Mission Systems 1,147 1,052 2,245 2,140 Nuclear-powered submarines 1,438 1,342 2,734 2,546 Surface combatants 276 254 541 501 Auxiliary and commercial ships 197 155 415 298 Repair and other services 257 328 512 668 Total Marine Systems 2,168 2,079 4,202 4,013 Total revenue $ 9,186 $ 7,675 $ 16,721 $ 15,116
Revenue by Contract Type	Revenue by contract type was as follows: Three Months Ended July 1, 2018 Aerospace Combat Systems Information Technology Mission Systems Marine Systems Total Revenue Fixed-price $ 1,696 $ 1,330 $ 1,059 $ 658 $ 1,372 $ 6,115 Cost-reimbursement — 197 930 451 795 2,373 Time-and-materials 199 7 453 38 1 698 Total revenue $ 1,895 $ 1,534 $ 2,442 $ 1,147 $ 2,168 $ 9,186 Three Months Ended July 2, 2017 Fixed-price $ 1,913 $ 1,207 $ 339 $ 553 $ 1,253 $ 5,265 Cost-reimbursement — 196 555 463 824 2,038 Time-and-materials 165 11 158 36 2 372 Total revenue $ 2,078 $ 1,414 $ 1,052 $ 1,052 $ 2,079 $ 7,675 Six Months Ended July 1, 2018 Aerospace Combat Systems Information Technology Mission Systems Marine Systems Total Revenue Fixed-price $ 3,364 $ 2,583 $ 1,446 $ 1,278 $ 2,677 $ 11,348 Cost-reimbursement — 376 1,507 891 1,523 4,297 Time-and-materials 356 15 627 76 2 1,076 Total revenue $ 3,720 $ 2,974 $ 3,580 $ 2,245 $ 4,202 $ 16,721 Six Months Ended July 2, 2017 Fixed-price $ 3,815 $ 2,280 $ 690 $ 1,132 $ 2,383 $ 10,300 Cost-reimbursement — 403 1,108 920 1,625 4,056 Time-and-materials 337 18 312 88 5 760 Total revenue $ 4,152 $ 2,701 $ 2,110 $ 2,140 $ 4,013 $ 15,116
Revenue by Customer	Revenue by customer was as follows: Three Months Ended July 1, 2018 Aerospace Combat Systems Information Technology Mission Systems Marine Systems Total Revenue U.S. government: Department of Defense (DoD) $ 89 $ 660 $ 1,052 $ 764 $ 2,032 $ 4,597 Non-DoD — 3 1,311 130 1 1,445 Foreign Military Sales (FMS) 19 83 7 14 39 162 Total U.S. government 108 746 2,370 908 2,072 6,204 U.S. commercial 917 58 41 36 91 1,143 Non-U.S. government 143 712 31 161 4 1,051 Non-U.S. commercial 727 18 — 42 1 788 Total revenue $ 1,895 $ 1,534 $ 2,442 $ 1,147 $ 2,168 $ 9,186 Three Months Ended July 2, 2017 U.S. government: DoD $ 32 $ 660 $ 424 $ 678 $ 2,016 $ 3,810 Non-DoD — 1 551 147 — 699 FMS 9 83 6 15 40 153 Total U.S. government 41 744 981 840 2,056 4,662 U.S. commercial 877 42 65 26 17 1,027 Non-U.S. government 64 594 6 154 4 822 Non-U.S. commercial 1,096 34 — 32 2 1,164 Total revenue $ 2,078 $ 1,414 $ 1,052 $ 1,052 $ 2,079 $ 7,675 Six Months Ended July 1, 2018 Aerospace Combat Systems Information Technology Mission Systems Marine Systems Total Revenue U.S. government: DoD $ 130 $ 1,267 $ 1,485 $ 1,506 $ 3,982 $ 8,370 Non-DoD — 4 1,948 248 1 2,201 FMS 35 152 15 21 68 291 Total U.S. government 165 1,423 3,448 1,775 4,051 10,862 U.S. commercial 1,759 116 81 63 144 2,163 Non-U.S. government 153 1,409 51 333 6 1,952 Non-U.S. commercial 1,643 26 — 74 1 1,744 Total revenue $ 3,720 $ 2,974 $ 3,580 $ 2,245 $ 4,202 $ 16,721 Six Months Ended July 2, 2017 U.S. government: DoD $ 72 $ 1,269 $ 845 $ 1,399 $ 3,853 $ 7,438 Non-DoD — 3 1,118 278 — 1,399 FMS 18 191 11 22 98 340 Total U.S. government 90 1,463 1,974 1,699 3,951 9,177 U.S. commercial 1,813 103 126 54 50 2,146 Non-U.S. government 69 1,096 10 329 8 1,512 Non-U.S. commercial 2,180 39 — 58 4 2,281 Total revenue $ 4,152 $ 2,701 $ 2,110 $ 2,140 $ 4,013 $ 15,116

Earnings Per Share (Tables)

Earnings Per Share (Tables)	6 Months Ended
	Jul. 01, 2018
Earnings Per Share [Abstract]
Basic and diluted weighted average shares outstanding	Basic and diluted weighted average shares outstanding were as follows (in thousands): Three Months Ended Six Months Ended July 1, 2018 July 2, 2017 July 1, 2018 July 2, 2017 Basic weighted average shares outstanding 296,153 299,790 296,276 300,780 Dilutive effect of stock options and restricted stock/RSUs* 3,986 5,560 4,318 5,560 Diluted weighted average shares outstanding 300,139 305,350 300,594 306,340 * Excludes outstanding options to purchase shares of common stock that had exercise prices in excess of the average market price of our common stock during the period and, therefore, the effect of including these options would be antidilutive. These options totaled 3,511 and 2,851 for the three- and six-month periods ended July 1, 2018 , and 1,846 and 1,251 for the three- and six-month periods ended July 2, 2017 , respectively.

Fair Value (Tables)

Fair Value (Tables)	6 Months Ended
	Jul. 01, 2018
Fair Value Disclosures [Abstract]
Carrying And Fair Values Of Other Financial Assets And Liabilities	The following tables present the fair values of our other financial assets and liabilities on July 1, 2018 , and December 31, 2017 , and the basis for determining their fair values: Carrying Value Fair Value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Financial Assets (Liabilities) July 1, 2018 Measured at fair value: Marketable securities held in trust: Cash and equivalents $ 8 $ 8 $ 2 $ 6 $ — Available-for-sale debt securities 127 127 — 127 — Equity securities 52 52 52 — — Other investments 4 4 — — 4 Cash flow hedges (151 ) (151 ) — (151 ) — Measured at amortized cost: Short- and long-term debt principal (14,400 ) (14,194 ) — (14,194 ) — December 31, 2017 Measured at fair value: Marketable securities held in trust: Cash and equivalents $ 20 $ 20 $ 15 $ 5 $ — Available-for-sale debt securities 117 117 — 117 — Equity securities 54 54 54 — — Other investments 4 4 — — 4 Cash flow hedges (105 ) (105 ) — (105 ) — Measured at amortized cost: Short- and long-term debt principal (4,032 ) (3,974 ) — (3,974 ) —

Income Taxes (Tables)

Income Taxes (Tables)	6 Months Ended
	Jul. 01, 2018
Income Tax Disclosure [Abstract]
Deferred Tax Assets and Liabilities	Our net deferred tax liability consisted of the following: July 1, 2018 December 31, 2017 Deferred tax asset $ 36 $ 75 Deferred tax liability (594 ) (244 ) Net deferred tax liability $ (558 ) $ (169 )

Unbilled Receivables (Tables)

Unbilled Receivables (Tables)	6 Months Ended
	Jul. 01, 2018
Contractors [Abstract]
Schedule of Unbilled Receivables	Unbilled receivables consisted of the following: July 1, 2018 December 31, 2017 Unbilled revenue $ 24,610 $ 21,845 Advances and progress billings (17,485 ) (16,605 ) Net unbilled receivables $ 7,125 $ 5,240

Inventories (Tables)

Inventories (Tables)	6 Months Ended
	Jul. 01, 2018
Inventory Disclosure [Abstract]
Schedule Of Inventories	Inventories consisted of the following: July 1, 2018 December 31, 2017 Work in process $ 4,385 $ 3,872 Raw materials 1,381 1,357 Finished goods 49 51 Pre-owned aircraft 75 23 Total inventories $ 5,890 $ 5,303

Debt (Tables)

Debt (Tables)	6 Months Ended
	Jul. 01, 2018
Debt Disclosure [Abstract]
Schedule Of Debt	Debt consisted of the following: July 1, 2018 December 31, 2017 Fixed-rate notes due: Interest rate: May 2020 2.875% $ 2,000 $ — May 2021 3.000% 2,000 — July 2021 3.875% 500 500 November 2022 2.250% 1,000 1,000 May 2023 3.375% 750 — August 2023 1.875% 500 500 November 2024 2.375% 500 500 May 2025 3.500% 750 — August 2026 2.125% 500 500 November 2027 2.625% 500 500 May 2028 3.750% 1,000 — November 2042 3.600% 500 500 Floating-rate notes due: May 2020 3-month LIBOR + 0.29% 500 — May 2021 3-month LIBOR + 0.38% 500 — Commercial paper 2.137% 2,796 — Other Various 104 32 Total debt principal 14,400 4,032 Less unamortized debt issuance costs and discounts 122 50 Total debt 14,278 3,982 Less current portion 2,881 2 Long-term debt $ 11,397 $ 3,980
Schedule of Maturities of Debt	The aggregate amounts of scheduled principal maturities of our debt in the remainder of 2018 and in subsequent years are as follows: 2018 $ 2,887 2019 2 2020 2,502 2021 3,002 2022 1,002 Thereafter 5,005 Total debt principal $ 14,400

Other Liabilities (Tables)

Other Liabilities (Tables)	6 Months Ended
	Jul. 01, 2018
Other Liabilities Disclosure [Abstract]
Summary Of Significant Other Liabilities By Balance Sheet Caption	A summary of significant other liabilities by balance sheet caption follows: July 1, 2018 December 31, 2017 Salaries and wages $ 892 $ 786 Workers’ compensation 319 320 Retirement benefits 299 295 Fair value of cash flow hedges 221 180 Other (a) 1,710 1,317 Total other current liabilities $ 3,441 $ 2,898 Retirement benefits $ 4,561 $ 4,408 Customer deposits on commercial contracts 587 814 Deferred income taxes 594 244 Other (b) 1,446 1,066 Total other liabilities $ 7,188 $ 6,532 (a) Consists primarily of dividends payable, taxes payable, capital lease obligations, environmental remediation reserves, warranty reserves, deferred revenue and supplier contributions in the Aerospace segment, liabilities of discontinued operations, and insurance-related costs. (b) Consists primarily of capital lease obligations, warranty reserves, workers’ compensation liabilities and liabilities of discontinued operations.

Shareholders' Equity (Tables)

Shareholders' Equity (Tables)	6 Months Ended
	Jul. 01, 2018
Equity [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss)	The changes, pretax and net of tax, in each component of accumulated other comprehensive loss (AOCL) consisted of the following: Losses on Cash Flow Hedges Unrealized Gains on Marketable Securities Foreign Currency Translation Adjustments Changes in Retirement Plans’ Funded Status AOCL December 31, 2017 $ (94 ) $ 19 $ 402 $ (3,147 ) $ (2,820 ) Cumulative effect adjustments (see Note A) (4 ) (19 ) — (615 ) (638 ) Other comprehensive income, pretax (21 ) — (215 ) 163 (73 ) Provision for income tax, net 7 — — (34 ) (27 ) Other comprehensive loss, net of tax (14 ) — (215 ) 129 (100 ) July 1, 2018 $ (112 ) $ — $ 187 $ (3,633 ) $ (3,558 ) December 31, 2016 $ (345 ) $ 14 $ 69 $ (3,125 ) $ (3,387 ) Other comprehensive income, pretax 148 7 281 132 568 Provision for income tax, net (39 ) (2 ) (15 ) (47 ) (103 ) Other comprehensive income, net of tax 109 5 266 85 465 July 2, 2017 $ (236 ) $ 19 $ 335 $ (3,040 ) $ (2,922 )

Commitments And Contingencies (

Commitments And Contingencies (Tables)	6 Months Ended
	Jul. 01, 2018
Commitments and Contingencies Disclosure [Abstract]
Schedule Of Changes In Carrying Amount Of Warranty Liabilities	The changes in the carrying amount of warranty liabilities for the six-month periods ended July 1, 2018 , and July 2, 2017 , were as follows: Six Months Ended July 1, 2018 July 2, 2017 Beginning balance $ 467 $ 474 Warranty expense 60 71 Payments (54 ) (52 ) Adjustments (15 ) (28 ) Ending balance $ 458 $ 465

Retirement Plans (Tables)

Retirement Plans (Tables)	6 Months Ended
	Jul. 01, 2018
Retirement Benefits [Abstract]
Net Periodic Defined-Benefit Pension And Other Post-Retirement Benefit Cost	Net periodic defined-benefit pension and other post-retirement benefit cost (credit) for the three- and six-month periods ended July 1, 2018 , and July 2, 2017 , consisted of the following: Pension Benefits Other Post-retirement Benefits Three Months Ended July 1, 2018 July 2, 2017 July 1, 2018 July 2, 2017 Service cost $ 44 $ 42 $ 2 $ 3 Interest cost 140 113 8 9 Expected return on plan assets (228 ) (170 ) (10 ) (9 ) Recognized net actuarial loss (gain) 93 86 (1 ) (1 ) Amortization of prior service credit (11 ) (16 ) (1 ) (1 ) Net periodic benefit cost (credit) $ 38 $ 55 $ (2 ) $ 1 Six Months Ended Service cost $ 90 $ 84 $ 5 $ 6 Interest cost 254 226 16 17 Expected return on plan assets (407 ) (339 ) (19 ) (17 ) Recognized net actuarial loss (gain) 189 172 (2 ) (2 ) Amortization of prior service credit (22 ) (33 ) (2 ) (2 ) Net periodic benefit cost (credit) $ 104 $ 110 $ (2 ) $ 2

Segment Information (Tables)

Segment Information (Tables)	6 Months Ended
	Jul. 01, 2018
Segment Reporting [Abstract]
Summary Of Financial Information For Each Of Our Segments	The following is additional summary financial information for each of our segments: Capital Expenditures Depreciation and Amortization Six Months Ended July 1, 2018 July 2, 2017 July 1, 2018 July 2, 2017 Aerospace $ 102 $ 50 $ 72 $ 77 Combat Systems 26 31 42 42 Information Technology 21 4 120 15 Mission Systems 26 25 33 29 Marine Systems 81 37 55 51 Corporate 23 6 5 6 Total $ 279 $ 153 $ 327 $ 220 Identifiable assets for each of our segments follows: July 1, 2018 December 31, 2017 Aerospace $ 10,990 $ 10,126 Combat Systems 10,110 9,846 Information Technology 14,918 3,021 Mission Systems 6,079 5,856 Marine Systems 2,917 2,906 Corporate* 2,138 3,291 Total $ 47,152 $ 35,046 * Corporate identifiable assets are primarily cash and equivalents. Summary financial information for each of our segments follows: Revenue Operating Earnings Revenue from U.S. Government Three Months Ended July 1, 2018 July 2, 2017 July 1, 2018 July 2, 2017 July 1, 2018 July 2, 2017 Aerospace $ 1,895 $ 2,078 $ 386 $ 421 $ 108 $ 41 Combat Systems 1,534 1,414 236 225 746 744 Information Technology 2,442 1,052 156 87 2,370 981 Mission Systems 1,147 1,052 153 153 908 840 Marine Systems 2,168 2,079 195 178 2,072 2,056 Corporate — — (38 ) 3 — — Total $ 9,186 $ 7,675 $ 1,088 $ 1,067 $ 6,204 $ 4,662 Six Months Ended Aerospace $ 3,720 $ 4,152 $ 732 $ 860 $ 165 $ 90 Combat Systems 2,974 2,701 460 430 1,423 1,463 Information Technology 3,580 2,110 257 177 3,448 1,974 Mission Systems 2,245 2,140 299 299 1,775 1,699 Marine Systems 4,202 4,013 379 339 4,051 3,951 Corporate — — (31 ) 8 — — Total $ 16,721 $ 15,116 $ 2,096 $ 2,113 $ 10,862 $ 9,177

Condensed Consolidating Finan37

Condensed Consolidating Financial Statements (Tables)	6 Months Ended
	Jul. 01, 2018
Consolidating Financial Statements [Abstract]
Condensed Consolidating Statement of Earnings (Unaudited)	CONDENSED CONSOLIDATING STATEMENT OF EARNINGS (UNAUDITED) Three Months Ended July 1, 2018 Parent Guarantors on a Combined Basis Other Subsidiaries on a Combined Basis Consolidating Adjustments Total Consolidated Revenue $ — $ 6,793 $ 2,393 $ — $ 9,186 Cost of sales 9 (5,475 ) (2,043 ) — (7,509 ) G&A (45 ) (418 ) (126 ) — (589 ) Operating earnings (36 ) 900 224 — 1,088 Interest, net (94 ) (1 ) (8 ) — (103 ) Other, net (38 ) 4 19 — (15 ) Earnings before income tax (168 ) 903 235 — 970 Provision for income tax, net 43 (178 ) (49 ) — (184 ) Equity in net earnings of subsidiaries 911 — — (911 ) — Net earnings $ 786 $ 725 $ 186 $ (911 ) $ 786 Comprehensive income $ 619 $ 740 $ (41 ) $ (699 ) $ 619 Three Months Ended July 2, 2017 Revenue $ — $ 6,732 $ 943 $ — $ 7,675 Cost of sales 14 (5,413 ) (715 ) — (6,114 ) G&A (12 ) (406 ) (76 ) — (494 ) Operating earnings 2 913 152 — 1,067 Interest, net (23 ) — (1 ) — (24 ) Other, net (15 ) 3 1 — (11 ) Earnings before income tax (36 ) 916 152 — 1,032 Provision for income tax, net 26 (301 ) (8 ) — (283 ) Equity in net earnings of subsidiaries 759 — — (759 ) — Net earnings $ 749 $ 615 $ 144 $ (759 ) $ 749 Comprehensive income $ 1,089 $ 642 $ 427 $ (1,069 ) $ 1,089 CONDENSED CONSOLIDATING STATEMENT OF EARNINGS (UNAUDITED) Six Months Ended July 1, 2018 Parent Guarantors on a Combined Basis Other Subsidiaries on a Combined Basis Consolidating Adjustments Total Consolidated Revenue $ — $ 13,277 $ 3,444 $ — $ 16,721 Cost of sales 28 (10,677 ) (2,850 ) — (13,499 ) G&A (58 ) (854 ) (214 ) — (1,126 ) Operating earnings (30 ) 1,746 380 — 2,096 Interest, net (120 ) (1 ) (9 ) — (130 ) Other, net (62 ) 5 21 — (36 ) Earnings before income tax (212 ) 1,750 392 — 1,930 Provision for income tax, net 85 (343 ) (87 ) — (345 ) Equity in net earnings of subsidiaries 1,712 — — (1,712 ) — Net earnings $ 1,585 $ 1,407 $ 305 $ (1,712 ) $ 1,585 Comprehensive income $ 1,485 $ 1,425 $ 96 $ (1,521 ) $ 1,485 Six Months Ended July 2, 2017 Revenue $ — $ 13,276 $ 1,840 $ — $ 15,116 Cost of sales 31 (10,665 ) (1,403 ) — (12,037 ) G&A (22 ) (792 ) (152 ) — (966 ) Operating earnings 9 1,819 285 — 2,113 Interest, net (47 ) — (2 ) — (49 ) Other, net (30 ) 6 2 — (22 ) Earnings before income tax (68 ) 1,825 285 — 2,042 Provision for income tax, net 93 (594 ) (29 ) — (530 ) Equity in net earnings of subsidiaries 1,487 — — (1,487 ) — Net earnings $ 1,512 $ 1,231 $ 256 $ (1,487 ) $ 1,512 Comprehensive income $ 1,977 $ 1,259 $ 634 $ (1,893 ) $ 1,977
Condensed Consolidating Balance Sheet (Unaudited)	CONDENSED CONSOLIDATING BALANCE SHEET (UNAUDITED) July 1, 2018 Parent Guarantors on a Combined Basis Other Subsidiaries on a Combined Basis Consolidating Adjustments Total Consolidated ASSETS Current assets: Cash and equivalents $ 1,329 $ — $ 533 $ — $ 1,862 Accounts receivable — 1,118 2,756 — 3,874 Unbilled receivables — 2,783 4,342 — 7,125 Inventories — 5,752 138 — 5,890 Other current assets 132 408 536 — 1,076 Total current assets 1,461 10,061 8,305 — 19,827 Noncurrent assets: Property, plant and equipment (PP&E) 240 6,973 1,875 — 9,088 Accumulated depreciation of PP&E (79 ) (4,006 ) (824 ) — (4,909 ) Intangible assets, net — 272 2,466 — 2,738 Goodwill — 8,335 11,403 — 19,738 Other assets 246 236 188 — 670 Investment in subsidiaries 56,387 — — (56,387 ) — Total noncurrent assets 56,794 11,810 15,108 (56,387 ) 27,325 Total assets $ 58,255 $ 21,871 $ 23,413 $ (56,387 ) $ 47,152 LIABILITIES AND SHAREHOLDERS’ EQUITY Current liabilities: Short-term debt and current portion of long-term debt $ 2,789 $ 1 $ 91 $ — $ 2,881 Customer advances and deposits — 4,395 2,824 — 7,219 Other current liabilities 581 3,550 2,342 — 6,473 Total current liabilities 3,370 7,946 5,257 — 16,573 Noncurrent liabilities: Long-term debt 11,385 5 7 — 11,397 Other liabilities 2,293 3,197 1,698 — 7,188 Total noncurrent liabilities 13,678 3,202 1,705 — 18,585 Intercompany 29,213 (28,715 ) (498 ) — — Shareholders’ equity: Common stock 482 6 2,126 (2,132 ) 482 Other shareholders’ equity 11,512 39,432 14,823 (54,255 ) 11,512 Total shareholders’ equity 11,994 39,438 16,949 (56,387 ) 11,994 Total liabilities and shareholders’ equity $ 58,255 $ 21,871 $ 23,413 $ (56,387 ) $ 47,152 CONDENSED CONSOLIDATING BALANCE SHEET December 31, 2017 Parent Guarantors on a Combined Basis Other Subsidiaries on a Combined Basis Consolidating Adjustments Total Consolidated ASSETS Current assets: Cash and equivalents $ 1,930 $ — $ 1,053 $ — $ 2,983 Accounts receivable — 1,259 2,358 — 3,617 Unbilled receivables — 2,547 2,693 — 5,240 Inventories — 5,216 87 — 5,303 Other current assets 351 461 373 — 1,185 Total current assets 2,281 9,483 6,564 — 18,328 Noncurrent assets: PP&E 221 6,779 1,237 — 8,237 Accumulated depreciation of PP&E (75 ) (3,869 ) (776 ) — (4,720 ) Intangible assets, net — 287 415 — 702 Goodwill — 8,320 3,594 — 11,914 Other assets 199 232 154 — 585 Investment in subsidiaries 44,887 — — (44,887 ) — Total noncurrent assets 45,232 11,749 4,624 (44,887 ) 16,718 Total assets $ 47,513 $ 21,232 $ 11,188 $ (44,887 ) $ 35,046 LIABILITIES AND SHAREHOLDERS’ EQUITY Current liabilities: Short-term debt and current portion of long-term debt $ — $ 1 $ 1 $ — $ 2 Customer advances and deposits — 4,180 2,812 — 6,992 Other current liabilities 561 3,758 1,786 — 6,105 Total current liabilities 561 7,939 4,599 — 13,099 Noncurrent liabilities: Long-term debt 3,950 21 9 — 3,980 Other liabilities 2,451 3,473 608 — 6,532 Total noncurrent liabilities 6,401 3,494 617 — 10,512 Intercompany 29,116 (28,494 ) (622 ) — — Shareholders’ equity: Common stock 482 6 2,126 (2,132 ) 482 Other shareholders’ equity 10,953 38,287 4,468 (42,755 ) 10,953 Total shareholders’ equity 11,435 38,293 6,594 (44,887 ) 11,435 Total liabilities and shareholders’ equity $ 47,513 $ 21,232 $ 11,188 $ (44,887 ) $ 35,046
Condensed Consolidating Statement of Cash Flows (Unaudited)	CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS (UNAUDITED) Six Months Ended July 1, 2018 Parent Guarantors on a Combined Basis Other Subsidiaries on a Combined Basis Consolidating Adjustments Total Consolidated Net cash provided by operating activities* $ 41 $ 468 $ (218 ) $ — $ 291 Cash flows from investing activities: Business acquisitions, net of cash acquired (9,749 ) (74 ) (216 ) — (10,039 ) Capital expenditures (22 ) (215 ) (42 ) — (279 ) Other, net 2 72 — — 74 Net cash used by investing activities (9,769 ) (217 ) (258 ) — (10,244 ) Cash flows from financing activities: Proceeds from fixed-rate notes 6,461 — — — 6,461 Proceeds from commercial paper, net 2,786 — — — 2,786 Proceeds from floating-rate notes 1,000 — — — 1,000 Dividends paid (526 ) — — — (526 ) Repayment of CSRA accounts receivable purchase — — (450 ) — (450 ) Purchases of common stock (436 ) — — — (436 ) Other, net (45 ) — 48 — 3 Net cash provided by financing activities 9,240 — (402 ) — 8,838 Net cash used by discontinued operations (6 ) — — — (6 ) Cash sweep/funding by parent (107 ) (251 ) 358 — — Net decrease in cash and equivalents (601 ) — (520 ) — (1,121 ) Cash and equivalents at beginning of period 1,930 — 1,053 — 2,983 Cash and equivalents at end of period $ 1,329 $ — $ 533 $ — $ 1,862 Six Months Ended July 2, 2017 Net cash provided by operating activities* $ 214 $ 847 $ (51 ) $ — $ 1,010 Cash flows from investing activities: Capital expenditures (6 ) (114 ) (33 ) — (153 ) Other, net 1 8 (51 ) — (42 ) Net cash used by investing activities (5 ) (106 ) (84 ) — (195 ) Cash flows from financing activities: Purchases of common stock (901 ) — — — (901 ) Dividends paid (483 ) — — — (483 ) Other, net 21 (1 ) 88 — 108 Net cash used by financing activities (1,363 ) (1 ) 88 — (1,276 ) Net cash used by discontinued operations (17 ) — — — (17 ) Cash sweep/funding by parent 764 (740 ) (24 ) — — Net decrease in cash and equivalents (407 ) — (71 ) — (478 ) Cash and equivalents at beginning of period 1,254 — 1,080 — 2,334 Cash and equivalents at end of period $ 847 $ — $ 1,009 $ — $ 1,856 * Continuing operations only.

Summary of Significant Accoun38

Summary of Significant Accounting Policies (Details) $ in Millions	3 Months Ended	6 Months Ended
	Jul. 01, 2018USD ($)	Jul. 01, 2018USD ($)Segment	Jan. 01, 2018USD ($)
New Accounting Pronouncements
Number of operating segments | Segment		5
Length of fiscal quarters, weeks		91 days
Operating Earnings | Accounting Standards Update 2017-07
New Accounting Pronouncements
New accounting pronouncement, effect of change in operating results	$ 11	$ 22
Other Income | Accounting Standards Update 2017-07
New Accounting Pronouncements
New accounting pronouncement, effect of change in operating results	$ (11)	$ (22)
Retained Earnings | Accounting Standards Update 2016-01
New Accounting Pronouncements
Cumulative effect of new accounting pronouncement in period of adoption			$ 24
Retained Earnings | Accounting Standards Update 2018-02
New Accounting Pronouncements
Cumulative effect of new accounting pronouncement in period of adoption			614
Accumulated Other Comprehensive Loss | Accounting Standards Update 2016-01
New Accounting Pronouncements
Cumulative effect of new accounting pronouncement in period of adoption			(24)
Accumulated Other Comprehensive Loss | Accounting Standards Update 2018-02
New Accounting Pronouncements
Cumulative effect of new accounting pronouncement in period of adoption			$ (614)

Acquisitions and Divestitures39

Acquisitions and Divestitures, Divestitures, Goodwill and Intangible Assets - Additional Information (Details) $ / shares in Units, $ in Millions	Apr. 03, 2018USD ($)$ / shares	Jul. 01, 2018USD ($)	Jul. 02, 2017USD ($)	Jul. 01, 2018USD ($)business	Jul. 02, 2017USD ($)	Dec. 31, 2017USD ($)business
Business Acquisition [Line Items]
Amortization expense		$ 84	$ 19	$ 104	$ 38
CSRA
Business Acquisition [Line Items]
Estimated acquired intangible assets	$ 2,069
Goodwill expected to be deductible for tax purposes	490
Revenues of acquiree included in reported results since acquisition date		1,300		1,300
Operating earnings of acquiree included in reported results since acquisition date		134		134
Pre-tax earnings of acquiree included in reported results since acquisition date		147		147
Payments to acquire businesses, gross	9,749
Acquisition-related costs				$ 45
CSRA | Backlog and Customer Relationships
Business Acquisition [Line Items]
Estimated acquired intangible assets	$ 2,100
Weighted-average amortization life of acquired intangible assets	17 years
Percentage of aggregate value of acquired intangible assets to be amortized over 7 years	50.00%
Estimated period of amortization of 50% of the aggregate value of the intangible assets acquired under accelerated method	6 years
CSRA | Operating costs and expenses and other income (expense)
Business Acquisition [Line Items]
Acquisition-related costs		$ 75
CSRA | Common Stock
Business Acquisition [Line Items]
Percentage of interest acquired	100.00%
Cash acquisition price (in dollars per share) | $ / shares	$ 41.25
Series of Individually Immaterial Business Acquisitions
Business Acquisition [Line Items]
Number of businesses acquired | business				2		4
Payments to acquire businesses, gross				$ 335		$ 399

Acquisitions and Divestitures40

Acquisitions and Divestitures, Divestitures, Goodwill and Intangible Assets - Consideration and Fair Value of Net Assets Acquired (Details) - CSRA $ / shares in Units, shares in Millions, $ in Millions	Apr. 03, 2018USD ($)$ / sharesshares
Business Acquisition [Line Items]
Cash consideration per CSRA share | $ / shares	$ 41.25
Cash paid to purchase outstanding CSRA shares	$ 6,825
Cash paid to extinguish CSRA debt	2,846
Cash settlement of outstanding CSRA stock options and restricted stock units	78
Total purchase price	$ 9,749
CSRA
Business Acquisition [Line Items]
CSRA shares outstanding (in millions) | shares	165.4

Acquisitions and Divestitures41

Acquisitions and Divestitures, Divestitures, Goodwill and Intangible Assets - Fair Value of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Millions	Jul. 01, 2018	[1]	Apr. 03, 2018	Apr. 01, 2018	[2]	Dec. 31, 2017	[2]
Business Acquisition [Line Items]
Goodwill	$ 19,738			$ 11,955		$ 11,914
CSRA
Business Acquisition [Line Items]
Cash and equivalents			$ 45
Accounts receivable			156
Unbilled receivables			807
Other current assets			190
Property, plant and equipment, net			685
Intangible assets, net			2,069
Goodwill			7,807
Other noncurrent assets			19
Total assets			11,778
Account payable			(135)
Customer advances and deposits			(151)
Current capital lease obligation			(51)
Other current liabilities			(542)
Noncurrent capital lease obligation			(207)
Noncurrent deferred tax liability			(421)
Other noncurrent liabilities			(522)
Total liabilities			(2,029)
Net assets acquired			$ 9,749
[1]	Goodwill in the Information Technology and Mission Systems reporting units is net of $632 and $1.3 billion of accumulated impairment losses, respectively.
[2]	Goodwill in the Information Systems and Technology reporting unit is net of $1.9 billion of accumulated impairment losses.

Acquisitions and Divestitures42

Acquisitions and Divestitures, Divestitures, Goodwill and Intangible Assets - Future Amortization Expense of Intangible Assets Acquired (Details) - CSRA $ in Millions	Jul. 01, 2018USD ($)
Business Acquisition [Line Items]
2018 (9 months post-acquisition)	$ 188
2,019	204
2,020	195
2,021	154
2,022	$ 136

Acquisitions and Divestitures43

Acquisitions and Divestitures, Divestitures, Goodwill and Intangible Assets - Unaudited Pro Forma Information (Details) - CSRA - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Jul. 01, 2018	Jul. 02, 2017	Jul. 01, 2018	Jul. 02, 2017
Business Acquisition [Line Items]
Revenue	$ 9,186	$ 8,853	$ 18,023	$ 17,497
Net earnings	$ 804	$ 756	$ 1,534	$ 1,489
Diluted earnings per share	$ 2.68	$ 2.48	$ 5.10	$ 4.86

Acquisitions and Divestitures44

Acquisitions and Divestitures, Divestitures, Goodwill and Intangible Assets - Changes In Amount of Goodwill (Details) - USD ($) $ in Millions		3 Months Ended
		Jul. 01, 2018		Apr. 01, 2018		Dec. 31, 2017
Goodwill [Roll Forward]
Goodwill, beginning of period	[1]	$ 11,955		$ 11,914
Change in reporting unit composition	[2]	0
Acquisitions/divestitures	[3]	7,902		16
Other	[4]	(119)		25
Goodwill, end of period		19,738	[5]	11,955	[1]
Aerospace
Goodwill [Roll Forward]
Goodwill, beginning of period	[1]	2,678		2,638
Change in reporting unit composition	[2]	0
Acquisitions/divestitures	[3]	149		0
Other	[4]	(71)		40
Goodwill, end of period		2,756	[5]	2,678	[1]
Combat Systems
Goodwill [Roll Forward]
Goodwill, beginning of period	[1]	2,663		2,677
Change in reporting unit composition	[2]	0
Acquisitions/divestitures	[3]	0		0
Other	[4]	(36)		(14)
Goodwill, end of period		2,627	[5]	2,663	[1]
Information Systems and Technology
Goodwill [Roll Forward]
Goodwill, beginning of period	[1]	6,317		6,302
Change in reporting unit composition	[2]	(6,317)
Acquisitions/divestitures	[3]	0		16
Other	[4]	0		(1)
Goodwill, end of period		0	[5]	6,317	[1]
Accumulated impairment loss				1,900		$ 1,900
Information Technology
Goodwill [Roll Forward]
Goodwill, beginning of period	[1]	0		0
Change in reporting unit composition	[2]	2,076
Acquisitions/divestitures	[3]	7,752		0
Other	[4]	0		0
Goodwill, end of period		9,828	[5]	0	[1]
Accumulated impairment loss		632
Mission Systems
Goodwill [Roll Forward]
Goodwill, beginning of period	[1]	0		0
Change in reporting unit composition	[2]	4,241
Acquisitions/divestitures	[3]	1		0
Other	[4]	(12)		0
Goodwill, end of period		4,230	[5]	0	[1]
Accumulated impairment loss		1,300
Marine Systems
Goodwill [Roll Forward]
Goodwill, beginning of period	[1]	297		297
Change in reporting unit composition	[2]	0
Acquisitions/divestitures	[3]	0		0
Other	[4]	0		0
Goodwill, end of period		$ 297	[5]	$ 297	[1]
[1]	Goodwill in the Information Systems and Technology reporting unit is net of $1.9 billion of accumulated impairment losses.
[2]	Concurrent with the acquisition of CSRA, we reorganized our Information Systems and Technology operating segment into the Information Technology and Mission Systems segments. See Note A for further discussion of the segment reorganization. This reorganization similarly changed the composition of our reporting units. Accordingly, goodwill of the Information Systems and Technology reporting unit was reassigned to the Information Technology and Mission Systems reporting units using a relative fair value allocation approach as of the date of the reorganization.
[3]	Includes adjustments during the purchase price allocation period. Activity in the first quarter of 2018 also includes an allocation of goodwill associated with the sale of the commercial health products business discussed above.
[4]	Consists primarily of adjustments for foreign currency translation.
[5]	Goodwill in the Information Technology and Mission Systems reporting units is net of $632 and $1.3 billion of accumulated impairment losses, respectively.

Acquisitions and Divestitures45

Acquisitions and Divestitures, Divestitures, Goodwill and Intangible Assets - Intangible Assets (Details) - USD ($) $ in Millions		Jul. 01, 2018	Dec. 31, 2017
Intangible Assets [Line Items]
Gross Carrying Amount	[1]	$ 4,564	$ 2,441
Accumulated Amortization		(1,826)	(1,739)
Net Carrying Amount		2,738	702
Contract and Program Intangible Assets
Intangible Assets [Line Items]
Gross Carrying Amount	[1],[2]	3,793	1,684
Accumulated Amortization	[2]	(1,394)	(1,320)
Net Carrying Amount	[2]	2,399	364
Trade Names and Trademarks
Intangible Assets [Line Items]
Gross Carrying Amount	[1]	458	465
Accumulated Amortization		(166)	(160)
Net Carrying Amount		292	305
Technology and Software
Intangible Assets [Line Items]
Gross Carrying Amount	[1]	158	137
Accumulated Amortization		(112)	(105)
Net Carrying Amount		46	32
Other Intangible Assets
Intangible Assets [Line Items]
Gross Carrying Amount	[1]	155	155
Accumulated Amortization		(154)	(154)
Net Carrying Amount		$ 1	$ 1
[1]	Change in gross carrying amounts consists primarily of adjustments for acquired intangible assets and foreign currency translation.
[2]	Consists of acquired backlog and probable follow-on work and associated customer relationships.

Revenue - Additional Informatio

Revenue - Additional Information (Details) contract in Thousands, $ in Billions	3 Months Ended		6 Months Ended
	Jul. 01, 2018USD ($)	Jul. 02, 2017USD ($)	Jul. 01, 2018USD ($)contract	Jul. 02, 2017USD ($)
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Number of active contracts | contract			10
Revenue recognized in contract liability balance | $	$ 1.1	$ 1.2	$ 2.6	$ 2.9
Transferred over Time
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue, percentage from products and services transferred to customers	78.00%	71.00%	75.00%	70.00%
Transferred at Point in Time
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue, percentage from products and services transferred to customers	22.00%	29.00%	25.00%	30.00%

Revenue - Remaining Performance

Revenue - Remaining Performance Obligations to be Recognized as Revenue (Details) - USD ($) $ in Billions	6 Months Ended	12 Months Ended
	Jul. 01, 2018	Dec. 31, 2017
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2018-01-01
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue, remaining performance obligations	$ 66.3	$ 63.2
Revenue, remaining performance obligation, expected timing of satisfaction, period		1 year
Revenue, remaining performance obligation, percentage recognized		40.00%
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-01-01
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year	2 years
Revenue, remaining performance obligation, percentage recognized	60.00%	40.00%
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-01-01
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue, remaining performance obligation, expected timing of satisfaction, period	2 years
Revenue, remaining performance obligation, percentage recognized	25.00%

Revenue - Impact of Adjustments

Revenue - Impact of Adjustments in Contract Estimates (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Jul. 01, 2018	Jul. 02, 2017	Jul. 01, 2018	Jul. 02, 2017
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Operating earnings	$ 1,088	$ 1,067	$ 2,096	$ 2,113
Accounting Standards Update 2014-09
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue	91	90	206	162
Operating earnings	$ 83	$ 121	$ 180	$ 171
Diluted earnings per share	$ 0.22	$ 0.26	$ 0.47	$ 0.36

Revenue - Revenue by Products a

Revenue - Revenue by Products and Services (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 01, 2018	Jul. 02, 2017	Jul. 01, 2018	Jul. 02, 2017
Revenue [Line Items]
Revenue	$ 9,186	$ 7,675	$ 16,721	$ 15,116
Aerospace
Revenue [Line Items]
Revenue	1,895	2,078	3,720	4,152
Aerospace | Aircraft manufacturing and completions
Revenue [Line Items]
Revenue	1,362	1,600	2,728	3,229
Aerospace | Aircraft services
Revenue [Line Items]
Revenue	531	445	982	880
Aerospace | Pre-owned aircraft
Revenue [Line Items]
Revenue	2	33	10	43
Combat Systems
Revenue [Line Items]
Revenue	1,534	1,414	2,974	2,701
Combat Systems | Wheeled combat and tactical vehicles
Revenue [Line Items]
Revenue	644	566	1,269	1,126
Combat Systems | Weapons systems, armament and munitions
Revenue [Line Items]
Revenue	443	409	826	755
Combat Systems | Tanks and tracked vehicles
Revenue [Line Items]
Revenue	346	278	677	525
Combat Systems | Engineering and other services
Revenue [Line Items]
Revenue	101	161	202	295
Information Technology
Revenue [Line Items]
Revenue	2,442	1,052	3,580	2,110
Information Technology | Information technology services
Revenue [Line Items]
Revenue	2,442	1,052	3,580	2,110
Mission Systems
Revenue [Line Items]
Revenue	1,147	1,052	2,245	2,140
Mission Systems | Platform systems and sensors
Revenue [Line Items]
Revenue	383	393	774	783
Mission Systems | Intelligence, surveillance and reconnaissance systems
Revenue [Line Items]
Revenue	372	333	749	662
Mission Systems | Communication systems
Revenue [Line Items]
Revenue	392	326	722	695
Marine Systems
Revenue [Line Items]
Revenue	2,168	2,079	4,202	4,013
Marine Systems | Nuclear - powered submarines
Revenue [Line Items]
Revenue	1,438	1,342	2,734	2,546
Marine Systems | Surface combatants
Revenue [Line Items]
Revenue	276	254	541	501
Marine Systems | Auxiliary and commercial ships
Revenue [Line Items]
Revenue	197	155	415	298
Marine Systems | Repair and other services
Revenue [Line Items]
Revenue	$ 257	$ 328	$ 512	$ 668

Revenue - Revenue by Contract T

Revenue - Revenue by Contract Type (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 01, 2018	Jul. 02, 2017	Jul. 01, 2018	Jul. 02, 2017
Revenue [Line Items]
Cost-reimbursement	$ 2,373	$ 2,038	$ 4,297	$ 4,056
Revenue	9,186	7,675	16,721	15,116
Aerospace
Revenue [Line Items]
Cost-reimbursement	0	0	0	0
Revenue	1,895	2,078	3,720	4,152
Combat Systems
Revenue [Line Items]
Cost-reimbursement	197	196	376	403
Revenue	1,534	1,414	2,974	2,701
Information Technology
Revenue [Line Items]
Cost-reimbursement	930	555	1,507	1,108
Revenue	2,442	1,052	3,580	2,110
Mission Systems
Revenue [Line Items]
Cost-reimbursement	451	463	891	920
Revenue	1,147	1,052	2,245	2,140
Marine Systems
Revenue [Line Items]
Cost-reimbursement	795	824	1,523	1,625
Revenue	2,168	2,079	4,202	4,013
Fixed-price
Revenue [Line Items]
Revenue	6,115	5,265	11,348	10,300
Fixed-price | Aerospace
Revenue [Line Items]
Revenue	1,696	1,913	3,364	3,815
Fixed-price | Combat Systems
Revenue [Line Items]
Revenue	1,330	1,207	2,583	2,280
Fixed-price | Information Technology
Revenue [Line Items]
Revenue	1,059	339	1,446	690
Fixed-price | Mission Systems
Revenue [Line Items]
Revenue	658	553	1,278	1,132
Fixed-price | Marine Systems
Revenue [Line Items]
Revenue	1,372	1,253	2,677	2,383
Time-and-materials
Revenue [Line Items]
Revenue	698	372	1,076	760
Time-and-materials | Aerospace
Revenue [Line Items]
Revenue	199	165	356	337
Time-and-materials | Combat Systems
Revenue [Line Items]
Revenue	7	11	15	18
Time-and-materials | Information Technology
Revenue [Line Items]
Revenue	453	158	627	312
Time-and-materials | Mission Systems
Revenue [Line Items]
Revenue	38	36	76	88
Time-and-materials | Marine Systems
Revenue [Line Items]
Revenue	$ 1	$ 2	$ 2	$ 5

Revenue - Revenue by Customer (

Revenue - Revenue by Customer (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 01, 2018	Jul. 02, 2017	Jul. 01, 2018	Jul. 02, 2017
Revenue [Line Items]
Revenue	$ 9,186	$ 7,675	$ 16,721	$ 15,116
Aerospace
Revenue [Line Items]
Revenue	1,895	2,078	3,720	4,152
Combat Systems
Revenue [Line Items]
Revenue	1,534	1,414	2,974	2,701
Information Technology
Revenue [Line Items]
Revenue	2,442	1,052	3,580	2,110
Mission Systems
Revenue [Line Items]
Revenue	1,147	1,052	2,245	2,140
Marine Systems
Revenue [Line Items]
Revenue	2,168	2,079	4,202	4,013
U.S. Government - Department of Defense
Revenue [Line Items]
Revenue	4,597	3,810	8,370	7,438
U.S. Government - Department of Defense | Aerospace
Revenue [Line Items]
Revenue	89	32	130	72
U.S. Government - Department of Defense | Combat Systems
Revenue [Line Items]
Revenue	660	660	1,267	1,269
U.S. Government - Department of Defense | Information Technology
Revenue [Line Items]
Revenue	1,052	424	1,485	845
U.S. Government - Department of Defense | Mission Systems
Revenue [Line Items]
Revenue	764	678	1,506	1,399
U.S. Government - Department of Defense | Marine Systems
Revenue [Line Items]
Revenue	2,032	2,016	3,982	3,853
U.S. Government - Non Department of Defense
Revenue [Line Items]
Revenue	1,445	699	2,201	1,399
U.S. Government - Non Department of Defense | Aerospace
Revenue [Line Items]
Revenue	0	0	0	0
U.S. Government - Non Department of Defense | Combat Systems
Revenue [Line Items]
Revenue	3	1	4	3
U.S. Government - Non Department of Defense | Information Technology
Revenue [Line Items]
Revenue	1,311	551	1,948	1,118
U.S. Government - Non Department of Defense | Mission Systems
Revenue [Line Items]
Revenue	130	147	248	278
U.S. Government - Non Department of Defense | Marine Systems
Revenue [Line Items]
Revenue	1	0	1	0
U.S. Government - Foreign Military Sales
Revenue [Line Items]
Revenue	162	153	291	340
U.S. Government - Foreign Military Sales | Aerospace
Revenue [Line Items]
Revenue	19	9	35	18
U.S. Government - Foreign Military Sales | Combat Systems
Revenue [Line Items]
Revenue	83	83	152	191
U.S. Government - Foreign Military Sales | Information Technology
Revenue [Line Items]
Revenue	7	6	15	11
U.S. Government - Foreign Military Sales | Mission Systems
Revenue [Line Items]
Revenue	14	15	21	22
U.S. Government - Foreign Military Sales | Marine Systems
Revenue [Line Items]
Revenue	39	40	68	98
U.S. Government
Revenue [Line Items]
Revenue	6,204	4,662	10,862	9,177
U.S. Government | Aerospace
Revenue [Line Items]
Revenue	108	41	165	90
U.S. Government | Combat Systems
Revenue [Line Items]
Revenue	746	744	1,423	1,463
U.S. Government | Information Technology
Revenue [Line Items]
Revenue	2,370	981	3,448	1,974
U.S. Government | Mission Systems
Revenue [Line Items]
Revenue	908	840	1,775	1,699
U.S. Government | Marine Systems
Revenue [Line Items]
Revenue	2,072	2,056	4,051	3,951
U.S. Commercial
Revenue [Line Items]
Revenue	1,143	1,027	2,163	2,146
U.S. Commercial | Aerospace
Revenue [Line Items]
Revenue	917	877	1,759	1,813
U.S. Commercial | Combat Systems
Revenue [Line Items]
Revenue	58	42	116	103
U.S. Commercial | Information Technology
Revenue [Line Items]
Revenue	41	65	81	126
U.S. Commercial | Mission Systems
Revenue [Line Items]
Revenue	36	26	63	54
U.S. Commercial | Marine Systems
Revenue [Line Items]
Revenue	91	17	144	50
Non U S Government
Revenue [Line Items]
Revenue	1,051	822	1,952	1,512
Non U S Government | Aerospace
Revenue [Line Items]
Revenue	143	64	153	69
Non U S Government | Combat Systems
Revenue [Line Items]
Revenue	712	594	1,409	1,096
Non U S Government | Information Technology
Revenue [Line Items]
Revenue	31	6	51	10
Non U S Government | Mission Systems
Revenue [Line Items]
Revenue	161	154	333	329
Non U S Government | Marine Systems
Revenue [Line Items]
Revenue	4	4	6	8
Non - U.S. Commercial
Revenue [Line Items]
Revenue	788	1,164	1,744	2,281
Non - U.S. Commercial | Aerospace
Revenue [Line Items]
Revenue	727	1,096	1,643	2,180
Non - U.S. Commercial | Combat Systems
Revenue [Line Items]
Revenue	18	34	26	39
Non - U.S. Commercial | Information Technology
Revenue [Line Items]
Revenue	0	0	0	0
Non - U.S. Commercial | Mission Systems
Revenue [Line Items]
Revenue	42	32	74	58
Non - U.S. Commercial | Marine Systems
Revenue [Line Items]
Revenue	$ 1	$ 2	$ 1	$ 4

Earnings Per Share (Detail)

Earnings Per Share (Detail) - shares shares in Thousands		3 Months Ended		6 Months Ended
		Jul. 01, 2018	Jul. 02, 2017	Jul. 01, 2018	Jul. 02, 2017
Earnings Per Share [Abstract]
Basic weighted average shares outstanding (shares)		296,153	299,790	296,276	300,780
Dilutive effect of stock options and restricted stock/RSUs (shares)	[1]	3,986	5,560	4,318	5,560
Diluted weighted average shares outstanding (shares)		300,139	305,350	300,594	306,340
[1]	Excludes outstanding options to purchase shares of common stock that had exercise prices in excess of the average market price of our common stock during the period and, therefore, the effect of including these options would be antidilutive. These options totaled 3,511 and 2,851 for the three- and six-month periods ended July 1, 2018, and 1,846 and 1,251 for the three- and six-month periods ended July 2, 2017, respectively.

Earnings Per Share - Additional

Earnings Per Share - Additional Information (Detail) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jul. 01, 2018	Jul. 02, 2017	Jul. 01, 2018	Jul. 02, 2017
Stock Options and Restricted Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities (shares)	3,511	1,846	2,851	1,251

Fair Value (Details)

Fair Value (Details) - USD ($) $ in Millions	Jul. 01, 2018	Dec. 31, 2017
Fair Value
Financial assets (liabilities)
Cash and equivalents	$ 8	$ 20
Available-for-sale debt securities	127
Available-for-sale debt securities		117
Equity securities	52
Equity securities		54
Other investments	4
Other investments		4
Cash flow hedges	(151)	(105)
Short- and long-term debt principal	(14,194)	(3,974)
Carrying Value
Financial assets (liabilities)
Cash and equivalents	8	20
Available-for-sale debt securities	127
Available-for-sale debt securities		117
Equity securities	52
Equity securities		54
Other investments	4
Other investments		4
Cash flow hedges	(151)	(105)
Short- and long-term debt principal	(14,400)	(4,032)
Fair Value, Inputs, Level 1
Financial assets (liabilities)
Cash and equivalents	2	15
Available-for-sale debt securities	0
Available-for-sale debt securities		0
Equity securities	52
Equity securities		54
Other investments	0
Other investments		0
Cash flow hedges	0	0
Short- and long-term debt principal	0	0
Fair Value, Inputs, Level 2
Financial assets (liabilities)
Cash and equivalents	6	5
Available-for-sale debt securities	127
Available-for-sale debt securities		117
Equity securities	0
Equity securities		0
Other investments	0
Other investments		0
Cash flow hedges	(151)	(105)
Short- and long-term debt principal	(14,194)	(3,974)
Fair Value, Inputs, Level 3
Financial assets (liabilities)
Cash and equivalents	0	0
Available-for-sale debt securities	0
Available-for-sale debt securities		0
Equity securities	0
Equity securities		0
Other investments	4
Other investments		4
Cash flow hedges	0	0
Short- and long-term debt principal	$ 0	$ 0

Income Taxes Deferred Tax (Deta

Income Taxes Deferred Tax (Details) - USD ($) $ in Millions	Jul. 01, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Deferred tax asset	$ 36	$ 75
Deferred tax liability	(594)	(244)
Net deferred tax liability	$ (558)	$ (169)

Income Taxes - Additional Infor

Income Taxes - Additional Information (Details)	Jul. 01, 2018USD ($)
Income Tax Disclosure [Abstract]
Possible chance of tax position sustained, percentage	50.00%
Amount of unrecorded benefit	$ 0

Unbilled Receivables (Details)

Unbilled Receivables (Details) - USD ($) $ in Millions	Jul. 01, 2018	Dec. 31, 2017
Contractors [Abstract]
Unbilled revenue	$ 24,610	$ 21,845
Advances and progress billings	(17,485)	(16,605)
Net unbilled receivables	$ 7,125	$ 5,240

Inventory (Details)

Inventory (Details) - USD ($) $ in Millions	Jul. 01, 2018	Dec. 31, 2017
Inventory Disclosure [Abstract]
Work in process	$ 4,385	$ 3,872
Raw materials	1,381	1,357
Finished goods	49	51
Pre-owned aircraft	75	23
Total inventories	$ 5,890	$ 5,303

Debt (Details)

Debt (Details) - USD ($) $ in Millions	6 Months Ended
	Jul. 01, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Total debt principal	$ 14,400	$ 4,032
Less unamortized debt issuance costs and discounts	122	50
Total debt	14,278	3,982
Less current portion	2,881	2
Long-term debt	11,397	3,980
Commercial Paper
Debt Instrument [Line Items]
Short term debt	$ 2,796	0
Weighted average interest rate	2.137%
Fixed Rate Notes Due May 2020
Debt Instrument [Line Items]
Long term debt	$ 2,000	0
Interest rate	2.875%
Fixed Rate Notes Due May 2021
Debt Instrument [Line Items]
Long term debt	$ 2,000	0
Interest rate	3.00%
Fixed-Rate Notes Due July 2021
Debt Instrument [Line Items]
Long term debt	$ 500	500
Interest rate	3.875%
Fixed Rate Notes Due November 2022
Debt Instrument [Line Items]
Long term debt	$ 1,000	1,000
Interest rate	2.25%
Fixed Rate Notes Due May 2023
Debt Instrument [Line Items]
Long term debt	$ 750	0
Interest rate	3.375%
Fixed Rate Notes Due August 2023
Debt Instrument [Line Items]
Long term debt	$ 500	500
Interest rate	1.875%
Fixed Rate Notes Due November 2024
Debt Instrument [Line Items]
Long term debt	$ 500	500
Interest rate	2.375%
Fixed Rate Notes Due May 2025
Debt Instrument [Line Items]
Long term debt	$ 750	0
Interest rate	3.50%
Fixed Rate Notes Due August 2026
Debt Instrument [Line Items]
Long term debt	$ 500	500
Interest rate	2.125%
Fixed Rate Notes Due November 2027
Debt Instrument [Line Items]
Long term debt	$ 500	500
Interest rate	2.625%
Fixed Rate Notes Due May 2028
Debt Instrument [Line Items]
Long term debt	$ 1,000	0
Interest rate	3.75%
Fixed Rate Notes Due November 2042
Debt Instrument [Line Items]
Long term debt	$ 500	500
Interest rate	3.60%
Floating Rate Notes Due May 2020 | LIBOR
Debt Instrument [Line Items]
Long term debt	$ 500	0
Basis spread on variable rate	0.29%
Floating Rate Notes Due May 2021 | LIBOR
Debt Instrument [Line Items]
Long term debt	$ 500	0
Basis spread on variable rate	0.38%
Other Debt Securities
Debt Instrument [Line Items]
Long term debt	$ 104	$ 32
Other Interest rate	Various

Debt - Additional Information (

Debt - Additional Information (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended	6 Months Ended
	Apr. 30, 2018	Jul. 01, 2018	Jul. 01, 2018	May 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Credit facility, maximum borrowing capacity		$ 5,000	$ 5,000
Percentage of owned subsidiaries guaranteed fixed- and floating-rate notes			100.00%
Fixed Rate Notes Due May 2020
Debt Instrument [Line Items]
Debt issued		2,000	$ 2,000		$ 0
Fixed Rate Notes Due May 2021
Debt Instrument [Line Items]
Debt issued		2,000	2,000		0
Credit Facility | 364-day Committed Bank Credit Facility
Debt Instrument [Line Items]
Credit facility, maximum borrowing capacity		$ 2,000	2,000
Debt instrument term		364 days
Credit Facility | 364-day Committed Bank Credit Facility | CSRA
Debt Instrument [Line Items]
Borrowings from line of credit	$ 7,500
Commercial Paper
Debt Instrument [Line Items]
Debt instrument, face amount		$ 2,800	$ 2,800
Weighted average interest rate		2.137%	2.137%
LIBOR | Floating Rate Notes Due May 2020
Debt Instrument [Line Items]
Debt issued		$ 500	$ 500		0
LIBOR | Floating Rate Notes Due May 2021
Debt Instrument [Line Items]
Debt issued		500	500		$ 0
Notes
Debt Instrument [Line Items]
Debt instrument, face amount				$ 7,500
Notes | LIBOR | Floating Rate Notes Due May 2020
Debt Instrument [Line Items]
Debt issued				500
Notes | LIBOR | Floating Rate Notes Due May 2021
Debt Instrument [Line Items]
Debt issued				$ 500
Credit Facility | Multi-year Facility Expiring November 2020
Debt Instrument [Line Items]
Credit facility, maximum borrowing capacity		1,000	1,000
Credit Facility | Multi-year Facility Expiring March 2023
Debt Instrument [Line Items]
Credit facility, maximum borrowing capacity		$ 2,000	$ 2,000

Debt Debt - Scheduled Maturitie

Debt Debt - Scheduled Maturities of Debt (Details) $ in Millions	Jul. 01, 2018USD ($)
Debt Disclosure [Abstract]
2,018	$ 2,887
2,019	2
2,020	2,502
2,021	3,002
2,022	1,002
Thereafter	5,005
Total debt principal	$ 14,400

Other Liabilities (Details)

Other Liabilities (Details) - USD ($) $ in Millions		Jul. 01, 2018	Dec. 31, 2017
Other Liabilities Disclosure [Abstract]
Salaries and wages		$ 892	$ 786
Workers’ compensation		319	320
Retirement benefits		299	295
Fair value of cash flow hedges		221	180
Other	[1]	1,710	1,317
Total other current liabilities		3,441	2,898
Retirement benefits		4,561	4,408
Customer deposits on commercial contracts		587	814
Deferred income taxes		594	244
Other	[2]	1,446	1,066
Total other liabilities		$ 7,188	$ 6,532
[1]	Consists primarily of dividends payable, taxes payable, capital lease obligations, environmental remediation reserves, warranty reserves, deferred revenue and supplier contributions in the Aerospace segment, liabilities of discontinued operations, and insurance-related costs.
[2]	Consists primarily of capital lease obligations, warranty reserves, workers’ compensation liabilities and liabilities of discontinued operations.

Shareholders' Equity (Details)

Shareholders' Equity (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jul. 01, 2018	Jul. 02, 2017	Jul. 01, 2018	Jul. 02, 2017	Mar. 01, 2017
Class of Stock [Line Items]
Stock Repurchase Program, Number of Shares Authorized to be Repurchased					10
Stock repurchased during the period, shares			2.1	4.6
Stock repurchased during the period, value			$ 436	$ 893
Remaining number of shares authorized to be repurchased, shares	5.5		5.5
Shares remaining to be repurchased as a percent of total shares outstanding	2.00%		2.00%
Recognized net actuarial losses (before tax)			$ 187	170
Amortization of prior service credit (before tax)			24	35
Purchases of common stock			$ 436	$ 901
Dividends declared per share	$ 0.93	$ 0.84	$ 1.86	$ 1.68
Dividends paid in cash	$ 276	$ 253	$ 526	$ 483

Shareholders' Equity - Changes

Shareholders' Equity - Changes in AOCI (Details) - USD ($) $ in Millions	6 Months Ended
	Jul. 01, 2018	Jul. 02, 2017
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance	$ (2,820)	$ (3,387)
Cumulative effect adjustments	(638)
Other comprehensive income (loss) pretax	(73)	568
Provision for income tax, net	(27)	(103)
Other comprehensive income (loss) net of tax	(100)	465
Ending Balance	(3,558)	(2,922)
Losses on Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance	(94)	(345)
Cumulative effect adjustments	(4)
Other comprehensive income (loss) pretax	(21)	148
Provision for income tax, net	7	(39)
Other comprehensive income (loss) net of tax	(14)	109
Ending Balance	(112)	(236)
Unrealized Gains on Securities
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance	19	14
Cumulative effect adjustments	(19)
Other comprehensive income (loss) pretax	0	7
Provision for income tax, net	0	(2)
Other comprehensive income (loss) net of tax	0	5
Ending Balance	0	19
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance	402	69
Cumulative effect adjustments	0
Other comprehensive income (loss) pretax	(215)	281
Provision for income tax, net	0	(15)
Other comprehensive income (loss) net of tax	(215)	266
Ending Balance	187	335
Changes in Retirement Plans’ Funded Status
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance	(3,147)	(3,125)
Cumulative effect adjustments	(615)
Other comprehensive income (loss) pretax	163	132
Provision for income tax, net	(34)	(47)
Other comprehensive income (loss) net of tax	129	85
Ending Balance	$ (3,633)	$ (3,040)

Derivative Instruments And He65

Derivative Instruments And Hedging Activities - Additional Information (Details) - USD ($) $ in Millions	6 Months Ended
	Jul. 01, 2018	Dec. 31, 2017	Jul. 02, 2017	Dec. 31, 2016
Derivative Instruments, Gain (Loss) [Line Items]
Notional forward foreign exchange contracts outstanding	$ 6,000	$ 4,300
Average maturity of foreign currency forward contracts, in years	2 years
Cash and equivalents	$ 1,862	2,983	$ 1,856	$ 2,334
Marketable securities held in trust	$ 187	$ 191
Maximum
Derivative Instruments, Gain (Loss) [Line Items]
Maturity of fixed-income securities, in years	5 years

Commitments And Contingencies -

Commitments And Contingencies - Additional Information (Details) $ in Billions	6 Months Ended
	Jul. 01, 2018USD ($)
Other Commitments [Line Items]
Letters of credit and guarantees	$ 1.5
Maximum
Other Commitments [Line Items]
Period preceding delivery of aircraft to customer fair market value of trade-in aircraft is established, days, maximum	45 days

Commitments And Contingencies67

Commitments And Contingencies - Product Guarantee (Details) - USD ($) $ in Millions	6 Months Ended
	Jul. 01, 2018	Jul. 02, 2017
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]
Beginning balance	$ 467	$ 474
Warranty expense	60	71
Payments	(54)	(52)
Adjustments	(15)	(28)
Ending balance	$ 458	$ 465

Retirement Plans - Benefits Pla

Retirement Plans - Benefits Plans (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 01, 2018	Jul. 02, 2017	Jul. 01, 2018	Jul. 02, 2017
Defined Benefit Plan Disclosure [Line Items]
Required employer contributions to defined-benefit retirement plans during the fiscal year	$ 315		$ 315
Expected future employer contributions to defined-benefit retirement plans during the fiscal year	570		570
Pension Plans, Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Service cost	44	$ 42	90	$ 84
Interest cost	140	113	254	226
Expected return on plan assets	(228)	(170)	(407)	(339)
Recognized net actuarial loss (gain)	93	86	189	172
Amortization of prior service credit	(11)	(16)	(22)	(33)
Net periodic benefit cost (credit)	38	55	104	110
Other Postretirement Benefit Plans, Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Service cost	2	3	5	6
Interest cost	8	9	16	17
Expected return on plan assets	(10)	(9)	(19)	(17)
Recognized net actuarial loss (gain)	(1)	(1)	(2)	(2)
Amortization of prior service credit	(1)	(1)	(2)	(2)
Net periodic benefit cost (credit)	$ (2)	$ 1	$ (2)	$ 2

Segment Information - Additiona

Segment Information - Additional Information (Details) $ in Millions	6 Months Ended
	Jul. 01, 2018USD ($)Segment
Segment Reporting Information [Line Items]
Number of operating segments | Segment	5
CSRA
Segment Reporting Information [Line Items]
One-time charges associated with costs to complete acquisition | $	$ 45

Segment Information (Details)

Segment Information (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jul. 01, 2018	Jul. 02, 2017	Jul. 01, 2018	Jul. 02, 2017	Dec. 31, 2017
Segment Reporting Information [Line Items]
Revenue		$ 9,186	$ 7,675	$ 16,721	$ 15,116
Operating earnings		1,088	1,067	2,096	2,113
Capital expenditures				279	153
Depreciation and amortization				327	220
Identifiable assets		47,152		47,152		$ 35,046
Aerospace
Segment Reporting Information [Line Items]
Revenue		1,895	2,078	3,720	4,152
Operating earnings		386	421	732	860
Capital expenditures				102	50
Depreciation and amortization				72	77
Identifiable assets		10,990		10,990		10,126
Combat Systems
Segment Reporting Information [Line Items]
Revenue		1,534	1,414	2,974	2,701
Operating earnings		236	225	460	430
Capital expenditures				26	31
Depreciation and amortization				42	42
Identifiable assets		10,110		10,110		9,846
Information Technology
Segment Reporting Information [Line Items]
Revenue		2,442	1,052	3,580	2,110
Operating earnings		156	87	257	177
Capital expenditures				21	4
Depreciation and amortization				120	15
Identifiable assets		14,918		14,918		3,021
Mission Systems
Segment Reporting Information [Line Items]
Revenue		1,147	1,052	2,245	2,140
Operating earnings		153	153	299	299
Capital expenditures				26	25
Depreciation and amortization				33	29
Identifiable assets		6,079		6,079		5,856
Marine Systems
Segment Reporting Information [Line Items]
Revenue		2,168	2,079	4,202	4,013
Operating earnings		195	178	379	339
Capital expenditures				81	37
Depreciation and amortization				55	51
Identifiable assets		2,917		2,917		2,906
Corporate
Segment Reporting Information [Line Items]
Revenue		0	0	0	0
Operating earnings		(38)	3	(31)	8
Capital expenditures				23	6
Depreciation and amortization				5	6
Identifiable assets	[1]	2,138		2,138		$ 3,291
U.S. Government
Segment Reporting Information [Line Items]
Revenue		6,204	4,662	10,862	9,177
U.S. Government | Aerospace
Segment Reporting Information [Line Items]
Revenue		108	41	165	90
U.S. Government | Combat Systems
Segment Reporting Information [Line Items]
Revenue		746	744	1,423	1,463
U.S. Government | Information Technology
Segment Reporting Information [Line Items]
Revenue		2,370	981	3,448	1,974
U.S. Government | Mission Systems
Segment Reporting Information [Line Items]
Revenue		908	840	1,775	1,699
U.S. Government | Marine Systems
Segment Reporting Information [Line Items]
Revenue		2,072	2,056	4,051	3,951
U.S. Government | Corporate
Segment Reporting Information [Line Items]
Revenue		$ 0	$ 0	$ 0	$ 0
[1]	Corporate identifiable assets are primarily cash and equivalents.

Condensed Consolidating Finan71

Condensed Consolidating Financial Statements - Narrative (Details)	6 Months Ended
	Jul. 01, 2018
Consolidating Financial Statements [Abstract]
Percentage of owned subsidiaries (the guarantors)	100.00%

Condensed Consolidating Stateme

Condensed Consolidating Statements of Earnings (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 01, 2018	Jul. 02, 2017	Jul. 01, 2018	Jul. 02, 2017
Revenue:
Revenue	$ 9,186	$ 7,675	$ 16,721	$ 15,116
Operating costs and expenses:
Cost of sales	(7,509)	(6,114)	(13,499)	(12,037)
General and administrative (G&A)	(589)	(494)	(1,126)	(966)
Operating earnings	1,088	1,067	2,096	2,113
Interest, net	(103)	(24)	(130)	(49)
Other, net	(15)	(11)	(36)	(22)
Earnings before income tax	970	1,032	1,930	2,042
Provision for income tax, net	(184)	(283)	(345)	(530)
Equity in net earnings of subsidiaries	0	0	0	0
Net earnings	786	749	1,585	1,512
Comprehensive income	619	1,089	1,485	1,977
Consolidating Adjustments
Revenue:
Revenue	0	0	0	0
Operating costs and expenses:
Cost of sales	0	0	0	0
General and administrative (G&A)	0	0	0	0
Operating earnings	0	0	0	0
Interest, net	0	0	0	0
Other, net	0	0	0	0
Earnings before income tax	0	0	0	0
Provision for income tax, net	0	0	0	0
Equity in net earnings of subsidiaries	(911)	(759)	(1,712)	(1,487)
Net earnings	(911)	(759)	(1,712)	(1,487)
Comprehensive income	(699)	(1,069)	(1,521)	(1,893)
Parent Company
Revenue:
Revenue	0	0	0	0
Operating costs and expenses:
Cost of sales	9	14	28	31
General and administrative (G&A)	(45)	(12)	(58)	(22)
Operating earnings	(36)	2	(30)	9
Interest, net	(94)	(23)	(120)	(47)
Other, net	(38)	(15)	(62)	(30)
Earnings before income tax	(168)	(36)	(212)	(68)
Provision for income tax, net	43	26	85	93
Equity in net earnings of subsidiaries	911	759	1,712	1,487
Net earnings	786	749	1,585	1,512
Comprehensive income	619	1,089	1,485	1,977
Guarantor Subsidiaries
Revenue:
Revenue	6,793	6,732	13,277	13,276
Operating costs and expenses:
Cost of sales	(5,475)	(5,413)	(10,677)	(10,665)
General and administrative (G&A)	(418)	(406)	(854)	(792)
Operating earnings	900	913	1,746	1,819
Interest, net	(1)	0	(1)	0
Other, net	4	3	5	6
Earnings before income tax	903	916	1,750	1,825
Provision for income tax, net	(178)	(301)	(343)	(594)
Equity in net earnings of subsidiaries	0	0	0	0
Net earnings	725	615	1,407	1,231
Comprehensive income	740	642	1,425	1,259
Non-Guarantor Subsidiaries
Revenue:
Revenue	2,393	943	3,444	1,840
Operating costs and expenses:
Cost of sales	(2,043)	(715)	(2,850)	(1,403)
General and administrative (G&A)	(126)	(76)	(214)	(152)
Operating earnings	224	152	380	285
Interest, net	(8)	(1)	(9)	(2)
Other, net	19	1	21	2
Earnings before income tax	235	152	392	285
Provision for income tax, net	(49)	(8)	(87)	(29)
Equity in net earnings of subsidiaries	0	0	0	0
Net earnings	186	144	305	256
Comprehensive income	$ (41)	$ 427	$ 96	$ 634

Condensed Consolidating Balance

Condensed Consolidating Balance Sheet (Details) - USD ($) $ in Millions	Jul. 01, 2018		Apr. 01, 2018	[2]	Dec. 31, 2017		Jul. 02, 2017	Dec. 31, 2016
Current assets:
Cash and equivalents	$ 1,862				$ 2,983		$ 1,856	$ 2,334
Accounts receivable	3,874				3,617
Unbilled receivables	7,125				5,240
Inventories	5,890				5,303
Other current assets	1,076				1,185
Total current assets	19,827				18,328
Noncurrent assets:
Property, plant and equipment (PP&E)	9,088				8,237
Accumulated depreciation of PP&E	(4,909)				(4,720)
Intangible assets, net	2,738				702
Goodwill	19,738	[1]	$ 11,955		11,914	[2]
Other assets	670				585
Investment in subsidiaries	0				0
Total noncurrent assets	27,325				16,718
Total assets	47,152				35,046
Current liabilities:
Short-term debt and current portion of long-term debt	2,881				2
Customer advances and deposits	7,219				6,992
Other current liabilities	6,473				6,105
Total current liabilities	16,573				13,099
Noncurrent liabilities:
Long-term debt	11,397				3,980
Other liabilities	7,188				6,532
Total noncurrent liabilities	18,585				10,512
Intercompany	0				0
Shareholders’ equity:
Common stock	482				482
Other shareholders’ equity	11,512				10,953
Total shareholders’ equity	11,994				11,435		10,952	10,301
Total liabilities and shareholders’ equity	47,152				35,046
Consolidating Adjustments
Current assets:
Cash and equivalents	0				0		0	0
Accounts receivable	0				0
Unbilled receivables	0				0
Inventories	0				0
Other current assets	0				0
Total current assets	0				0
Noncurrent assets:
Property, plant and equipment (PP&E)	0				0
Accumulated depreciation of PP&E	0				0
Intangible assets, net	0				0
Goodwill	0				0
Other assets	0				0
Investment in subsidiaries	(56,387)				(44,887)
Total noncurrent assets	(56,387)				(44,887)
Total assets	(56,387)				(44,887)
Current liabilities:
Short-term debt and current portion of long-term debt	0				0
Customer advances and deposits	0				0
Other current liabilities	0				0
Total current liabilities	0				0
Noncurrent liabilities:
Long-term debt	0				0
Other liabilities	0				0
Total noncurrent liabilities	0				0
Intercompany	0				0
Shareholders’ equity:
Common stock	(2,132)				(2,132)
Other shareholders’ equity	(54,255)				(42,755)
Total shareholders’ equity	(56,387)				(44,887)
Total liabilities and shareholders’ equity	(56,387)				(44,887)
Parent Company
Current assets:
Cash and equivalents	1,329				1,930		847	1,254
Accounts receivable	0				0
Unbilled receivables	0				0
Inventories	0				0
Other current assets	132				351
Total current assets	1,461				2,281
Noncurrent assets:
Property, plant and equipment (PP&E)	240				221
Accumulated depreciation of PP&E	(79)				(75)
Intangible assets, net	0				0
Goodwill	0				0
Other assets	246				199
Investment in subsidiaries	56,387				44,887
Total noncurrent assets	56,794				45,232
Total assets	58,255				47,513
Current liabilities:
Short-term debt and current portion of long-term debt	2,789				0
Customer advances and deposits	0				0
Other current liabilities	581				561
Total current liabilities	3,370				561
Noncurrent liabilities:
Long-term debt	11,385				3,950
Other liabilities	2,293				2,451
Total noncurrent liabilities	13,678				6,401
Intercompany	29,213				29,116
Shareholders’ equity:
Common stock	482				482
Other shareholders’ equity	11,512				10,953
Total shareholders’ equity	11,994				11,435
Total liabilities and shareholders’ equity	58,255				47,513
Guarantor Subsidiaries
Current assets:
Cash and equivalents	0				0		0	0
Accounts receivable	1,118				1,259
Unbilled receivables	2,783				2,547
Inventories	5,752				5,216
Other current assets	408				461
Total current assets	10,061				9,483
Noncurrent assets:
Property, plant and equipment (PP&E)	6,973				6,779
Accumulated depreciation of PP&E	(4,006)				(3,869)
Intangible assets, net	272				287
Goodwill	8,335				8,320
Other assets	236				232
Investment in subsidiaries	0				0
Total noncurrent assets	11,810				11,749
Total assets	21,871				21,232
Current liabilities:
Short-term debt and current portion of long-term debt	1				1
Customer advances and deposits	4,395				4,180
Other current liabilities	3,550				3,758
Total current liabilities	7,946				7,939
Noncurrent liabilities:
Long-term debt	5				21
Other liabilities	3,197				3,473
Total noncurrent liabilities	3,202				3,494
Intercompany	(28,715)				(28,494)
Shareholders’ equity:
Common stock	6				6
Other shareholders’ equity	39,432				38,287
Total shareholders’ equity	39,438				38,293
Total liabilities and shareholders’ equity	21,871				21,232
Non-Guarantor Subsidiaries
Current assets:
Cash and equivalents	533				1,053		$ 1,009	$ 1,080
Accounts receivable	2,756				2,358
Unbilled receivables	4,342				2,693
Inventories	138				87
Other current assets	536				373
Total current assets	8,305				6,564
Noncurrent assets:
Property, plant and equipment (PP&E)	1,875				1,237
Accumulated depreciation of PP&E	(824)				(776)
Intangible assets, net	2,466				415
Goodwill	11,403				3,594
Other assets	188				154
Investment in subsidiaries	0				0
Total noncurrent assets	15,108				4,624
Total assets	23,413				11,188
Current liabilities:
Short-term debt and current portion of long-term debt	91				1
Customer advances and deposits	2,824				2,812
Other current liabilities	2,342				1,786
Total current liabilities	5,257				4,599
Noncurrent liabilities:
Long-term debt	7				9
Other liabilities	1,698				608
Total noncurrent liabilities	1,705				617
Intercompany	(498)				(622)
Shareholders’ equity:
Common stock	2,126				2,126
Other shareholders’ equity	14,823				4,468
Total shareholders’ equity	16,949				6,594
Total liabilities and shareholders’ equity	$ 23,413				$ 11,188
[1]	Goodwill in the Information Technology and Mission Systems reporting units is net of $632 and $1.3 billion of accumulated impairment losses, respectively.
[2]	Goodwill in the Information Systems and Technology reporting unit is net of $1.9 billion of accumulated impairment losses.

Condensed Consolidating State74

Condensed Consolidating Statements of Cash Flows (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jul. 01, 2018	Jul. 02, 2017	Jul. 01, 2018	Jul. 02, 2017
Condensed Financial Statements [Line Items]
Net cash provided by operating activities	[1]			$ 291	$ 1,010
Cash flows from investing activities:
Business acquisitions, net of cash acquired				(10,039)	(89)
Capital expenditures				(279)	(153)
Other, net				74	(42)
Net cash used by investing activities				(10,244)	(195)
Cash flows from financing activities:
Proceeds from notes				6,461	0
Proceeds from commercial paper, net				2,786	(1)
Dividends paid		$ (276)	$ (253)	(526)	(483)
Repayment of CSRA accounts receivable purchase agreement				(450)	0
Purchases of common stock				(436)	(901)
Other, net				3	108
Net cash provided (used) by financing activities				8,838	(1,276)
Net cash used by discontinued operations				(6)	(17)
Cash sweep/funding by parent				0	0
Net decrease in cash and equivalents				(1,121)	(478)
Cash and equivalents at beginning of period				2,983	2,334
Cash and equivalents at end of period		1,862	1,856	1,862	1,856
LIBOR
Cash flows from financing activities:
Proceeds from notes				1,000	0
Consolidating Adjustments
Condensed Financial Statements [Line Items]
Net cash provided by operating activities	[1]			0	0
Cash flows from investing activities:
Business acquisitions, net of cash acquired				0
Capital expenditures				0	0
Other, net				0	0
Net cash used by investing activities				0	0
Cash flows from financing activities:
Proceeds from notes				0
Proceeds from commercial paper, net				0
Dividends paid				0	0
Repayment of CSRA accounts receivable purchase agreement				0
Purchases of common stock				0	0
Other, net				0	0
Net cash provided (used) by financing activities				0	0
Net cash used by discontinued operations				0	0
Cash sweep/funding by parent				0	0
Net decrease in cash and equivalents				0	0
Cash and equivalents at beginning of period				0	0
Cash and equivalents at end of period		0	0	0	0
Consolidating Adjustments | LIBOR
Cash flows from financing activities:
Proceeds from notes				0
Parent Company
Condensed Financial Statements [Line Items]
Net cash provided by operating activities	[1]			41	214
Cash flows from investing activities:
Business acquisitions, net of cash acquired				(9,749)
Capital expenditures				(22)	(6)
Other, net				2	1
Net cash used by investing activities				(9,769)	(5)
Cash flows from financing activities:
Proceeds from notes				6,461
Proceeds from commercial paper, net				2,786
Dividends paid				(526)	(483)
Repayment of CSRA accounts receivable purchase agreement				0
Purchases of common stock				(436)	(901)
Other, net				(45)	21
Net cash provided (used) by financing activities				9,240	(1,363)
Net cash used by discontinued operations				(6)	(17)
Cash sweep/funding by parent				(107)	764
Net decrease in cash and equivalents				(601)	(407)
Cash and equivalents at beginning of period				1,930	1,254
Cash and equivalents at end of period		1,329	847	1,329	847
Parent Company | LIBOR
Cash flows from financing activities:
Proceeds from notes				1,000
Guarantor Subsidiaries
Condensed Financial Statements [Line Items]
Net cash provided by operating activities	[1]			468	847
Cash flows from investing activities:
Business acquisitions, net of cash acquired				(74)
Capital expenditures				(215)	(114)
Other, net				72	8
Net cash used by investing activities				(217)	(106)
Cash flows from financing activities:
Proceeds from notes				0
Proceeds from commercial paper, net				0
Dividends paid				0	0
Repayment of CSRA accounts receivable purchase agreement				0
Purchases of common stock				0	0
Other, net				0	(1)
Net cash provided (used) by financing activities				0	(1)
Net cash used by discontinued operations				0	0
Cash sweep/funding by parent				(251)	(740)
Net decrease in cash and equivalents				0	0
Cash and equivalents at beginning of period				0	0
Cash and equivalents at end of period		0	0	0	0
Guarantor Subsidiaries | LIBOR
Cash flows from financing activities:
Proceeds from notes				0
Non-Guarantor Subsidiaries
Condensed Financial Statements [Line Items]
Net cash provided by operating activities	[1]			(218)	(51)
Cash flows from investing activities:
Business acquisitions, net of cash acquired				(216)
Capital expenditures				(42)	(33)
Other, net				0	(51)
Net cash used by investing activities				(258)	(84)
Cash flows from financing activities:
Proceeds from notes				0
Proceeds from commercial paper, net				0
Dividends paid				0	0
Repayment of CSRA accounts receivable purchase agreement				(450)
Purchases of common stock				0	0
Other, net				48	88
Net cash provided (used) by financing activities				(402)	88
Net cash used by discontinued operations				0	0
Cash sweep/funding by parent				358	(24)
Net decrease in cash and equivalents				(520)	(71)
Cash and equivalents at beginning of period				1,053	1,080
Cash and equivalents at end of period		$ 533	$ 1,009	533	$ 1,009
Non-Guarantor Subsidiaries | LIBOR
Cash flows from financing activities:
Proceeds from notes				$ 0
[1]	* Continuing operations only