Lockheed Martin (LMT) 10-Q 22 Apr 20 2020 Q1 Quarterly report Financial data

Cover Page

Cover Page - shares	3 Months Ended
	Mar. 29, 2020	Apr. 17, 2020
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 29, 2020
Document Transition Report	false
Entity File Number	1-11437
Entity Registrant Name	LOCKHEED MARTIN CORPORATION
Entity Incorporation, State or Country Code	MD
Entity Tax Identification Number	52-1893632
Entity Address, Address Line One	6801 Rockledge Drive,
Entity Address, City or Town	Bethesda,
Entity Address, State or Province	MD
Entity Address, Postal Zip Code	20817
City Area Code	301
Local Phone Number	897-6000
Title of 12(b) Security	Common Stock, $1 par value
Trading Symbol	LMT
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		280,435,314
Entity Central Index Key	0000936468
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q1
Amendment Flag	false

Consolidated Statements of Earn

Consolidated Statements of Earnings - USD ($) $ in Millions	3 Months Ended
	Mar. 29, 2020	Mar. 31, 2019
Total net sales	$ 15,651	$ 14,336
Total cost of sales	(13,560)	(12,148)
Gross profit	2,091	2,188
Other income, net	31	95
Operating profit	2,122	2,283
Interest expense	(148)	(171)
Other non-operating income (expense), net	56	(167)
Earnings before income taxes	2,030	1,945
Income tax expense	(313)	(241)
Net earnings	$ 1,717	$ 1,704
Earnings per common share
Basic (in dollars per share)	$ 6.10	$ 6.03
Diluted (in dollars per share)	6.08	5.99
Cash dividends paid per common share (in dollars per share)	$ 2.40	$ 2.20
Products
Total net sales	$ 13,166	$ 11,970
Total cost of sales	(11,742)	(10,625)
Services
Total net sales	2,485	2,366
Total cost of sales	(2,213)	(2,047)
Other unallocated, net
Total cost of sales	$ 395	$ 524

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Mar. 29, 2020	Mar. 31, 2019
Statement of Comprehensive Income [Abstract]
Net earnings	$ 1,717	$ 1,704
Other comprehensive income, net of tax
Recognition of previously deferred postretirement benefit plan amounts	110	227
Other, net	(97)	0
Other comprehensive income, net of tax	13	227
Comprehensive income	$ 1,730	$ 1,931

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Millions	Mar. 29, 2020	Dec. 31, 2019
Current assets
Cash and cash equivalents	$ 1,988	$ 1,514
Receivables, net	2,892	2,337
Contract assets	10,189	9,094
Inventories	3,539	3,619
Other current assets	614	531
Total current assets	19,222	17,095
Property, plant and equipment, net	6,605	6,591
Goodwill	10,565	10,604
Intangible assets, net	3,142	3,213
Deferred income taxes	3,164	3,319
Other noncurrent assets	6,550	6,706
Total assets	49,248	47,528
Current liabilities
Accounts payable	3,166	1,281
Contract liabilities	7,205	7,054
Salaries, benefits and payroll taxes	2,022	2,466
Current maturities of long-term debt	1,250	1,250
Other current liabilities	2,009	1,921
Total current liabilities	15,652	13,972
Long-term debt, net	11,439	11,404
Accrued pension liabilities	13,078	13,234
Other noncurrent liabilities	5,592	5,747
Total liabilities	45,761	44,357
Stockholders’ equity
Common stock, $1 par value per share	279	280
Additional paid-in capital	0	0
Retained earnings	18,708	18,401
Accumulated other comprehensive loss	(15,541)	(15,554)
Total stockholders’ equity	3,446	3,127
Noncontrolling interests in subsidiary	41	44
Total equity	3,487	3,171
Total liabilities and equity	$ 49,248	$ 47,528

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Mar. 29, 2020	Dec. 31, 2019
Statement of Financial Position [Abstract]
Common stock, par value (in dollars per share)	$ 1	$ 1

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 29, 2020	Mar. 31, 2019
Operating activities
Net earnings	$ 1,717	$ 1,704
Adjustments to reconcile net earnings to net cash provided by operating activities
Depreciation and amortization	301	277
Stock-based compensation	42	37
Gain on property sale	0	(51)
Changes in assets and liabilities
Receivables, net	(555)	(389)
Contract assets	(1,095)	(1,025)
Inventories	80	(288)
Accounts payable	1,894	744
Contract liabilities	151	305
Postretirement benefit plans	(39)	278
Income taxes	167	243
Other, net	(349)	(172)
Net cash provided by operating activities	2,314	1,663
Investing activities
Capital expenditures	(293)	(284)
Other, net	(2)	27
Net cash used for investing activities	(295)	(257)
Financing activities
Dividends paid	(693)	(638)
Repurchases of common stock	(756)	(281)
Repayments of commercial paper, net	0	(200)
Other, net	(96)	(68)
Net cash used for financing activities	(1,545)	(1,187)
Net change in cash and cash equivalents	474	219
Cash and cash equivalents at beginning of period	1,514	772
Cash and cash equivalents at end of period	$ 1,988	$ 991

Consolidated Statements of Equi

Consolidated Statements of Equity - USD ($) $ in Millions	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Loss	Total Stockholders’ Equity	Noncontrolling Interests in Subsidiary
Beginning Balance at Dec. 31, 2018	$ 1,449	$ 281	$ 0	$ 15,434	$ (14,321)	$ 1,394	$ 55
Increase (Decrease) in Stockholders' Equity
Net earnings	1,704			1,704		1,704
Other comprehensive income, net of tax	227				227	227
Repurchases of common stock	(284)	(1)	(46)	(237)		(284)
Dividends declared	(623)			(623)		(623)
Stock-based awards, ESOP activity and other	47	1	46			47
Net increase in noncontrolling interests in subsidiary	2						2
Ending Balance at Mar. 31, 2019	2,522	281	0	16,278	(14,094)	2,465	57
Beginning Balance at Dec. 31, 2019	3,171	280	0	18,401	(15,554)	3,127	44
Increase (Decrease) in Stockholders' Equity
Net earnings	1,717			1,717		1,717
Other comprehensive income, net of tax	13				13	13
Repurchases of common stock	(764)	(2)	(29)	(733)		(764)
Dividends declared	(677)			(677)		(677)
Stock-based awards, ESOP activity and other	30	1	29			30
Net decrease in noncontrolling interests in subsidiary	(3)						(3)
Ending Balance at Mar. 29, 2020	$ 3,487	$ 279	$ 0	$ 18,708	$ (15,541)	$ 3,446	$ 41

BASIS OF PRESENTATION

BASIS OF PRESENTATION	3 Months Ended
	Mar. 29, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
BASIS OF PRESENTATION	BASIS OF PRESENTATION We prepared these consolidated financial statements in accordance with U.S. generally accepted accounting principles (GAAP) for interim financial information, the instructions to Form 10-Q and Article 10 of U.S. Securities and Exchange Commission (SEC) Regulation S-X. Accordingly, they do not include all of the information and notes required by GAAP for complete financial statements. In the opinion of management, these consolidated financial statements reflect all adjustments that are of a normal recurring nature necessary for a fair presentation of our results of operations, financial condition, and cash flows for the interim periods presented. The preparation of these consolidated financial statements requires us to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. We base these estimates on historical experience and on various other assumptions that we believe are reasonable under the circumstances, the results of which form the basis for making judgments about the carrying amounts of assets and liabilities that are not readily apparent from other sources. Our actual results may differ materially from these estimates. Significant estimates inherent in the preparation of our consolidated financial statements include, but are not limited to, accounting for sales and cost recognition, postretirement benefit plans, assets for the portion of environmental costs that are probable of future recovery and liabilities, evaluation of goodwill, investments and other assets for impairment, income taxes including deferred tax assets, fair value measurements and contingencies. The consolidated financial statements include the accounts of subsidiaries we control and variable interest entities if we are the primary beneficiary. We eliminate intercompany balances and transactions in consolidation. We close our books and records on the last Sunday of the calendar quarter, which was on March 29 for the first quarter of 2020 and March 31 for the first quarter of 2019 , to align our financial closing with our business processes. The consolidated financial statements and tables of financial information included herein are labeled based on that convention. This practice only affects interim periods as our fiscal year ends on December 31. We adopted Accounting Standards Update (ASU) 2016-13, Financial Instruments - Credit Losses (Topic 326) : Measurement of Credit Losses on Financial Instruments , effective January 1, 2020 using the modified retrospective approach. The new standard changes how we account for credit losses for financial assets and certain other instruments, including trade receivables and contract assets, that are not measured at fair value through net income. Under legacy standards, we recognized an impairment of receivables when it was probable that a loss had been incurred. Under the new standard, we are required to recognize estimated credit losses expected to occur over the estimated life or remaining contractual life of an asset (which includes losses that may be incurred in future periods) using a broader range of information including reasonable and supportable forecasts about future economic conditions. The adoption of the standard did not have a significant impact on our operating results, financial position or cash flows. We adopted ASU 2018-14, Compensation—Retirement Benefits—Defined Benefit Plans—General (Topic 715-20): Disclosure Framework—Changes to the Disclosure Requirements For Defined Benefit Plans , effective January 1, 2020. The new standard modifies the annual disclosure requirements for employers that sponsor defined benefit pension or other postretirement plans. The guidance requires disclosure changes to be presented on a retrospective basis. As this standard relates only to financial disclosures, its adoption did not have an impact to our operating results, financial position or cash flows. The results of operations for the interim periods presented are not necessarily indicative of results to be expected for the full year or future periods. Unless otherwise noted, we present all per share amounts cited in these consolidated financial statements on a “per diluted share” basis. These consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto included in our Annual Report on Form 10-K for the year ended December 31, 2019 ( 2019 Form 10-K).

EARNINGS PER COMMON SHARE

EARNINGS PER COMMON SHARE	3 Months Ended
	Mar. 29, 2020
Earnings Per Share [Abstract]
EARNINGS PER COMMON SHARE	EARNINGS PER COMMON SHARE The weighted average number of shares outstanding used to compute earnings per common share were as follows (in millions): Quarters Ended March 29, March 31, Weighted average common shares outstanding for basic computations 281.3 282.5 Weighted average dilutive effect of equity awards 1.3 1.8 Weighted average common shares outstanding for diluted computations 282.6 284.3 We compute basic and diluted earnings per common share by dividing net earnings by the respective weighted average number of common shares outstanding for the periods presented. Our calculation of diluted earnings per common share also includes the dilutive effects for the assumed vesting of outstanding restricted stock units (RSUs) and performance stock units (PSUs) and exercise of outstanding stock options based on the treasury stock method. There were no significant anti-dilutive equity awards during the quarters ended March 29, 2020 or March 31, 2019 .

INFORMATION ON BUSINESS SEGMENT

INFORMATION ON BUSINESS SEGMENTS	3 Months Ended
	Mar. 29, 2020
Segment Reporting [Abstract]
INFORMATION ON BUSINESS SEGMENTS	INFORMATION ON BUSINESS SEGMENTS We operate in four business segments: Aeronautics, Missiles and Fire Control (MFC), Rotary and Mission Systems (RMS) and Space. We organize our business segments based on the nature of products and services offered. Net sales and operating profit of our business segments exclude intersegment sales, cost of sales, and profit as these activities are eliminated in consolidation. Business segment operating profit includes our share of earnings or losses from equity method investees as the operating activities of the equity method investees are closely aligned with the operations of our business segments. Business segment operating profit also excludes the FAS/CAS operating adjustment described below, a portion of corporate costs not considered allowable or allocable to contracts with the U.S. Government under the applicable U.S. government cost accounting standards (CAS) or federal acquisition regulations (FAR), and other items not considered part of management’s evaluation of segment operating performance such as a portion of management and administration costs, legal fees and settlements, environmental costs, stock-based compensation expense, retiree benefits, significant severance actions, significant asset impairments, gains or losses from significant divestitures, and other miscellaneous corporate activities. Excluded items are included in the reconciling item “Unallocated items” between operating profit from our business segments and our consolidated operating profit. See “ Note 10 – Other ” for a discussion related to certain factors that may impact the comparability of net sales and operating profit of our business segments. Summary operating results for each of our business segments were as follows (in millions): Quarters Ended March 29, March 31, Net sales Aeronautics $ 6,369 $ 5,584 Missiles and Fire Control 2,619 2,350 Rotary and Mission Systems 3,746 3,762 Space 2,917 2,640 Total net sales $ 15,651 $ 14,336 Operating profit Aeronautics $ 672 $ 585 Missiles and Fire Control 396 417 Rotary and Mission Systems 376 379 Space 281 334 Total business segment operating profit 1,725 1,715 Unallocated items FAS/CAS operating adjustment (a) 469 512 Stock-based compensation (42 ) (37 ) Other, net (30 ) 93 Total unallocated items 397 568 Total consolidated operating profit $ 2,122 $ 2,283 Intersegment sales Aeronautics $ 59 $ 42 Missiles and Fire Control 136 121 Rotary and Mission Systems 499 499 Space 108 68 Total intersegment sales $ 802 $ 730 (a) The FAS/CAS operating adjustment represents the difference between the service cost component of financial accounting standards (FAS) pension income (expense) and total pension costs recoverable on U.S. Government contracts as determined in accordance with CAS. Our total net FAS/CAS pension adjustment for the quarters ended March 29, 2020 and March 31, 2019 , including the service and non-service cost components of FAS pension income (expense) for our qualified defined benefit pension plans, were as follows (in millions): Quarters Ended March 29, March 31, Total FAS income (expense) and CAS costs FAS pension income (expense) $ 30 $ (273 ) Less: CAS pension cost 494 641 Net FAS/CAS pension adjustment $ 524 $ 368 Service and non-service cost reconciliation FAS pension service cost $ (25 ) $ (129 ) Less: CAS pension cost 494 641 FAS/CAS operating adjustment 469 512 Non-operating FAS pension income (expense) 55 (144 ) Net FAS/CAS pension adjustment $ 524 $ 368 We recover CAS pension and other postretirement benefit plan cost through the pricing of our products and services on U.S. Government contracts and, therefore, recognize CAS cost in each of our business segment’s net sales and cost of sales. Our consolidated financial statements must present FAS pension and other postretirement benefit plan expense calculated in accordance with FAS requirements under U.S. GAAP. The operating portion of the net FAS/CAS pension adjustment represents the difference between the service cost component of FAS pension income (expense) and total CAS pension cost. The non-service FAS pension income (expense) component is included in other non-operating income (expense), net in our consolidated statements of earnings. As a result, to the extent that CAS pension cost exceeds the service cost component of FAS pension income (expense), we have a favorable FAS/CAS operating adjustment. The corporation will have FAS pension income in 2020, compared to FAS pension expense in prior periods. We will no longer have service costs for certain of our plans as a result of completing the planned freeze of our salaried pension plans effective January 1, 2020 that was previously announced on July 1, 2014. See “ Note 6 – Postretirement Benefit Plans ” for additional information regarding the corporation’s FAS pension expense or income and CAS pension cost. Net sales by products and services, contract type, customer, and geographic region were as follows (in millions): Quarter Ended March 29, 2020 Aeronautics MFC RMS Space Total Net sales Products $ 5,455 $ 2,275 $ 2,986 $ 2,450 $ 13,166 Services 914 344 760 467 2,485 Total net sales $ 6,369 $ 2,619 $ 3,746 $ 2,917 $ 15,651 Net sales by contract type Fixed-price $ 4,584 $ 1,718 $ 2,482 $ 519 $ 9,303 Cost-reimbursable 1,785 901 1,264 2,398 6,348 Total net sales $ 6,369 $ 2,619 $ 3,746 $ 2,917 $ 15,651 Net sales by customer U.S. Government $ 4,033 $ 1,955 $ 2,788 $ 2,483 $ 11,259 International (a) 2,321 660 855 420 4,256 U.S. commercial and other 15 4 103 14 136 Total net sales $ 6,369 $ 2,619 $ 3,746 $ 2,917 $ 15,651 Net sales by geographic region United States $ 4,048 $ 1,959 $ 2,891 $ 2,497 $ 11,395 Asia Pacific 995 75 318 28 1,416 Europe 948 168 167 398 1,681 Middle East 328 407 207 (6 ) 936 Other 50 10 163 — 223 Total net sales $ 6,369 $ 2,619 $ 3,746 $ 2,917 $ 15,651 Quarter Ended March 31, 2019 Aeronautics MFC RMS Space Total Net sales Products $ 4,796 $ 1,916 $ 3,059 $ 2,199 $ 11,970 Services 788 434 703 441 2,366 Total net sales $ 5,584 $ 2,350 $ 3,762 $ 2,640 $ 14,336 Net sales by contract type Fixed-price $ 4,170 $ 1,535 $ 2,619 $ 523 $ 8,847 Cost-reimbursable 1,414 815 1,143 2,117 5,489 Total net sales $ 5,584 $ 2,350 $ 3,762 $ 2,640 $ 14,336 Net sales by customer U.S. Government $ 3,435 $ 1,633 $ 2,675 $ 2,236 $ 9,979 International (a) 2,095 670 995 395 4,155 U.S. commercial and other 54 47 92 9 202 Total net sales $ 5,584 $ 2,350 $ 3,762 $ 2,640 $ 14,336 Net sales by geographic region United States $ 3,489 $ 1,680 $ 2,767 $ 2,245 $ 10,181 Asia Pacific 906 122 330 8 1,366 Europe 798 122 198 381 1,499 Middle East 337 413 285 6 1,041 Other 54 13 182 — 249 Total net sales $ 5,584 $ 2,350 $ 3,762 $ 2,640 $ 14,336 (a) International sales include foreign military sales (FMS) contracted through the U.S. Government and direct commercial sales to international governments and other international customers. Our Aeronautics business segment includes our largest program, the F-35 Lightning II Joint Strike Fighter, an international multi-role, multi-variant, stealth fighter aircraft. Net sales for the F-35 program represented approximately 28% of our total consolidated net sales for the quarter ended March 29, 2020 and 26% of our total consolidated net sales for the quarter ended March 31, 2019 . Total assets for each of our business segments were as follows (in millions): March 29, December 31, Assets Aeronautics $ 10,003 $ 9,109 Missiles and Fire Control 5,210 5,030 Rotary and Mission Systems 18,901 18,751 Space 6,164 5,844 Total business segment assets 40,278 38,734 Corporate assets (a) 8,970 8,794 Total assets $ 49,248 $ 47,528 (a) Corporate assets primarily include cash and cash equivalents, deferred income taxes, assets for the portion of environmental costs that are probable of future recovery and investments held in a separate trust.

CONTRACT ASSETS AND LIABILITIES

CONTRACT ASSETS AND LIABILITIES	3 Months Ended
	Mar. 29, 2020
Revenue from Contract with Customer [Abstract]
CONTRACT ASSETS AND LIABILITIES	CONTRACT ASSETS AND LIABILITIES Contract assets include unbilled amounts typically resulting from sales under contracts when the percentage-of-completion cost-to-cost method of revenue recognition is utilized and revenue recognized exceeds the amount billed to the customer. Contract liabilities include advance payments and billings in excess of revenue recognized. Contract assets and contract liabilities were as follows (in millions): March 29, December 31, Contract assets $ 10,189 $ 9,094 Contract liabilities 7,205 7,054 Contract assets increased $1.1 billion during the quarter ended March 29, 2020 , primarily due to the recognition of revenue related to the satisfaction or partial satisfaction of performance obligations during the quarter ended March 29, 2020 for which we have not yet billed our customers. There were no significant credit or impairment losses related to our contract assets during the quarters ended March 29, 2020 and March 31, 2019 . Contract liabilities increased $151 million during the quarter ended March 29, 2020 , primarily due to payments received in excess of revenue recognized on these performance obligations. During the quarter ended March 29, 2020 , we recognized $1.6 billion of our contract liabilities that existed at December 31, 2019 as revenue. During the quarter ended March 31, 2019 , we recognized $1.8 billion of our contract liabilities at December 31, 2018 as revenue.

INVENTORIES

INVENTORIES	3 Months Ended
	Mar. 29, 2020
Inventory Disclosure [Abstract]
INVENTORIES	INVENTORIES Inventories consisted of the following (in millions): March 29, December 31, Materials, spares and supplies $ 521 $ 532 Work-in-process 2,717 2,783 Finished goods 301 304 Total inventories $ 3,539 $ 3,619 Costs incurred to fulfill a contract in advance of the contract being awarded are included in inventories as work-in-process if we determine that those costs relate directly to a contract or to an anticipated contract that we can specifically identify and contract award is probable, the costs generate or enhance resources that will be used in satisfying performance obligations, and the costs are recoverable (referred to as pre-contract costs). Pre-contract costs that are initially capitalized in inventory are generally recognized as cost of sales consistent with the transfer of products and services to the customer upon the receipt of the anticipated contract. All other pre-contract costs, including start-up costs, are expensed as incurred. As of March 29, 2020 and December 31, 2019 , $519 million and $493 million of pre-contract costs were included in inventories.

POSTRETIREMENT BENEFIT PLANS

POSTRETIREMENT BENEFIT PLANS	3 Months Ended
	Mar. 29, 2020
Retirement Benefits [Abstract]
POSTRETIREMENT BENEFIT PLANS	POSTRETIREMENT BENEFIT PLANS Our pretax net periodic benefit (income) cost related to our qualified defined benefit pension plans and retiree medical and life insurance plans consisted of the following (in millions): Quarters Ended March 29, March 31, Qualified defined benefit pension plans Service cost $ 25 $ 129 Interest cost 385 452 Expected return on plan assets (566 ) (575 ) Recognized net actuarial losses 212 351 Amortization of prior service credits (86 ) (84 ) Total net periodic benefit (income) cost $ (30 ) $ 273 Retiree medical and life insurance plans Service cost $ 3 $ 4 Interest cost 18 24 Expected return on plan assets (32 ) (28 ) Recognized net actuarial losses (1 ) 1 Amortization of prior service costs 10 10 Total net periodic benefit (income) cost $ (2 ) $ 11 As previously announced on July 1, 2014, we completed the final step of the planned freeze of our qualified and nonqualified defined benefit pension plans for salaried employees effective January 1, 2020; the plans are now fully frozen. With the freeze complete, the majority of our salaried employees participate in an enhanced defined contribution retirement savings plan. We record the service cost component of net periodic benefit cost (primarily for our bargained plans beginning in 2020) as part of cost of sales and the non-service cost components of net periodic benefit cost as part of other non-operating income (expense), net in the consolidated statements of earnings. The recognized net actuarial losses and amortization of prior service credits or costs in the table above, along with similar costs related to our other postretirement benefit plans ( $5 million for the quarter ended March 29, 2020 and $11 million for the quarter ended March 31, 2019 ) were reclassified from accumulated other comprehensive loss (AOCL) and recorded as a component of net periodic benefit (income) cost for the periods presented. These costs totaled $140 million ( $110 million , net of tax) during the quarter ended March 29, 2020 and $289 million ( $227 million , net of tax) during the quarter ended March 31, 2019 and were recorded on our consolidated statements of comprehensive income as an increase to other comprehensive income. The required funding of our qualified defined benefit pension plans is determined in accordance with the Employee Retirement Income Security Act of 1974 (ERISA), as amended by the Pension Protection Act of 2006 (PPA), along with consideration of CAS and Internal Revenue Code rules. There were no contributions to our qualified defined benefit pension plans during the quarters ended March 29, 2020 and March 31, 2019 .

LEGAL PROCEEDINGS AND CONTINGEN

LEGAL PROCEEDINGS AND CONTINGENCIES	3 Months Ended
	Mar. 29, 2020
Commitments and Contingencies Disclosure [Abstract]
LEGAL PROCEEDINGS AND CONTINGENCIES	LEGAL PROCEEDINGS AND CONTINGENCIES We are a party to or have property subject to litigation and other proceedings that arise in the ordinary course of our business, including matters arising under provisions relating to the protection of the environment, and are subject to contingencies related to certain businesses we previously owned. These types of matters could result in fines, penalties, cost reimbursements or contributions, compensatory or treble damages or non-monetary sanctions or relief. We believe the probability is remote that the outcome of each of these matters, including the legal proceedings described below, will have a material adverse effect on the corporation as a whole, notwithstanding that the unfavorable resolution of any matter may have a material effect on our net earnings in any particular interim reporting period. Among the factors that we consider in this assessment are the nature of existing legal proceedings and claims, the asserted or possible damages or loss contingency (if estimable), the progress of the case, existing law and precedent, the opinions or views of legal counsel and other advisers, our experience in similar cases and the experience of other companies, the facts available to us at the time of assessment and how we intend to respond to the proceeding or claim. Our assessment of these factors may change over time as individual proceedings or claims progress. Although we cannot predict the outcome of legal or other proceedings with certainty, where there is at least a reasonable possibility that a loss may have been incurred, GAAP requires us to disclose an estimate of the reasonably possible loss or range of loss or make a statement that such an estimate cannot be made. We follow a thorough process in which we seek to estimate the reasonably possible loss or range of loss, and only if we are unable to make such an estimate do we conclude and disclose that an estimate cannot be made. Accordingly, unless otherwise indicated below in our discussion of legal proceedings, a reasonably possible loss or range of loss associated with any individual legal proceeding cannot be estimated. Legal Proceedings As a result of our acquisition of Sikorsky Aircraft Corporation (Sikorsky), we assumed the defense of and any potential liability for two civil False Claims Act lawsuits pending in the U.S. District Court for the Eastern District of Wisconsin. In October 2014, the U.S. Government filed a complaint in intervention in the first suit, which was brought by qui tam relator Mary Patzer, a former Derco Aerospace (Derco) employee. In May 2017, the U.S. Government filed a complaint in intervention in the second suit, which was brought by qui tam relator Peter Cimma, a former Sikorsky Support Services, Inc. (SSSI) employee. In November 2017, the Court consolidated the cases into a single action for discovery and trial. The U.S. Government alleges that Sikorsky and two of its wholly-owned subsidiaries, Derco and SSSI, violated the civil False Claims Act and the Truth in Negotiations Act in connection with a contract the U.S. Navy awarded to SSSI in June 2006 to support the Navy’s T-34 and T-44 fixed-wing turboprop training aircraft. SSSI subcontracted with Derco, primarily to procure and manage spare parts for the training aircraft. The U.S. Government contends that SSSI overbilled the Navy on the contract as the result of Derco’s use of prohibited cost-plus-percentage-of-cost pricing to add profit and overhead costs as a percentage of the price of the spare parts that Derco procured and then sold to SSSI. The U.S. Government also alleges that Derco’s claims to SSSI, SSSI’s claims to the Navy, and SSSI’s yearly Certificates of Final Indirect Costs from 2006 through 2012 were false and that SSSI submitted inaccurate cost or pricing data in violation of the Truth in Negotiations Act for a sole-sourced, follow-on “bridge” contract. The U.S. Government’s complaints assert common law claims for breach of contract and unjust enrichment. The U.S. Government further alleged violations of the Anti-Kickback Act and False Claims Act based on a monthly “chargeback,” through which SSSI billed Derco for the cost of certain SSSI personnel, allegedly in exchange for SSSI’s permitting a pricing arrangement that was “highly favorable” to Derco. On January 12, 2018, the Corporation filed a partial motion to dismiss intended to narrow the U.S. Government’s claims, including by seeking dismissal of the Anti-Kickback Act allegations. The Corporation also moved to dismiss Cimma as a party under the False Claims Act’s first-to-file rule, which permits only the first relator to recover in a pending case. The District Court granted these motions, in part, on July 20, 2018, dismissing the Government’s claims under the Anti-Kickback Act and dismissing Cimma as a party to the litigation. The U.S. Government seeks damages of approximately $52 million , subject to trebling, plus statutory penalties. We believe that we have legal and factual defenses to the U.S. Government’s remaining claims. Although we continue to evaluate our liability and exposure, we do not currently believe that it is probable that we will incur a material loss. If, contrary to our expectations, the U.S. Government prevails in this matter and proves damages at or near $52 million and is successful in having such damages trebled, the outcome could have an adverse effect on our results of operations in the period in which a liability is recognized and on our cash flows for the period in which any damages are paid. On February 8, 2019, the Department of Justice (DOJ) filed a complaint in the U.S. District Court for the Eastern District of Washington alleging, among other counts, civil False Claims Act and civil Anti-Kickback Act violations against Mission Support Alliance, LLC (MSA), Lockheed Martin, Lockheed Martin Services, Inc. (LMSI) and a current Lockheed Martin vice president. The dollar amount of damages sought is not specified but DOJ seeks treble damages with respect to the False Claims Act and penalties that are subject to doubling under the Anti-Kickback Act. The allegations relate primarily to information technology services performed by LMSI under a subcontract to MSA and the pricing by MSA and LMSI of those services as well as Lockheed Martin’s payment of standard incentive compensation to certain employees who were seconded to MSA, including the vice president. MSA is a joint venture that holds a prime contract to provide infrastructure support services at DOE’s Hanford facility. On April 23, 2019, the parties each filed partial motions to dismiss the U.S. Government’s False Claims Act and Anti-Kickback Act allegations. On January 13, 2020, the court dismissed the Anti-Kickback Act claim against all defendants with prejudice and denied the motions to dismiss the False Claims Act claims. On August 16, 2016, we divested our former Information Systems & Global Solutions (IS&GS) business segment to Leidos Holdings, Inc. (Leidos) in a transaction that resulted in IS&GS becoming part of Leidos (the Transaction). In the Transaction, Leidos acquired IS&GS’ interest in MSA and the liabilities related to Lockheed Martin’s participation in MSA. Included within the liabilities assumed were those associated with this lawsuit. Lockheed Martin transferred to Leidos a reserve of approximately $38 million established by Lockheed Martin with respect to its potential liability and that of its affiliates and agreed to indemnify Leidos with respect to the liabilities assumed for damages to Leidos for 100% of amounts in excess of this reserve up to $64 million and 50% of amounts in excess of $64 million . We cannot reasonably estimate our exposure at this time, but it is possible that a settlement by or judgment against any of the defendants could implicate Lockheed Martin’s indemnification obligations as described above. At present, in view of what we believe to be the strength of the defenses, our belief that Leidos assumed the liabilities, and our view of the structure of the indemnity, we do not believe it probable that we will incur a material loss and have not taken any reserve. On April 24, 2009, we filed a declaratory judgment action against the New York Metropolitan Transportation Authority and its Capital Construction Company (collectively, the MTA) asking the U.S. District Court for the Southern District of New York to find that the MTA is in material breach of our agreement based on the MTA’s failure to provide access to sites where work must be performed and the customer-furnished equipment necessary to complete the contract. The MTA filed an answer and counterclaim alleging that we breached the contract and subsequently terminated the contract for alleged default. The primary damages sought by the MTA are the costs to complete the contract and potential re-procurement costs. While we are unable to estimate the cost of another contractor to complete the contract and the costs of re-procurement, we note that our contract with the MTA had a total value of $323 million , of which $241 million was paid to us, and that the MTA is seeking damages of approximately $190 million . We dispute the MTA’s allegations and are defending against them. Additionally, following an investigation, our sureties on a performance bond related to this matter, who were represented by independent counsel, concluded that the MTA’s termination of the contract was improper. Finally, our declaratory judgment action was later amended to include claims for monetary damages against the MTA of approximately $95 million . This matter was taken under submission by the District Court in December 2014, after a five-week bench trial and the filing of post-trial pleadings by the parties. We continue to await a decision from the District Court. Although this matter relates to our former IS&GS business, we retained the litigation when we divested IS&GS in 2016. Environmental Matters We are involved in proceedings and potential proceedings relating to soil, sediment, surface water, and groundwater contamination, disposal of hazardous substances, and other environmental matters at several of our current or former facilities, facilities for which we may have contractual responsibility, and at third-party sites where we have been designated as a potentially responsible party (PRP). A substantial portion of environmental costs will be included in our net sales and cost of sales in future periods pursuant to U.S. Government regulations. At the time a liability is recorded for future environmental costs, we record assets for estimated future recovery considered probable through the pricing of products and services to agencies of the U.S. Government, regardless of the contract form (e.g., cost-reimbursable, fixed-price). We continually evaluate the recoverability of our assets for the portion of environmental costs that are probable of future recovery by assessing, among other factors, U.S. Government regulations, our U.S. Government business base and contract mix, our history of receiving reimbursement of such costs, and efforts by some U.S. Government representatives to limit such reimbursement. We include the portions of those environmental costs expected to be allocated to our non-U.S. Government contracts or determined not to be recoverable under U.S. Government contracts, in our cost of sales at the time the liability is established. At March 29, 2020 and December 31, 2019 , the aggregate amount of liabilities recorded relative to environmental matters was $812 million and $810 million , most of which are recorded in other noncurrent liabilities on our consolidated balance sheets. We have recorded assets for the portion of environmental costs that are probable of future recovery totaling $705 million and $703 million at March 29, 2020 and December 31, 2019 , most of which are recorded in other noncurrent assets on our consolidated balance sheets, for the estimated future recovery of these costs, as we consider the recovery probable based on the factors previously mentioned. We project costs and recovery of costs over approximately 20 years . Environmental remediation activities usually span many years, which makes estimating liabilities a matter of judgment because of uncertainties with respect to assessing the extent of the contamination as well as such factors as changing remediation technologies and changing regulatory environmental standards. There are a number of former and present operating facilities that we are monitoring or investigating for potential future remediation. We perform quarterly reviews of the status of our environmental remediation sites and the related liabilities and receivables. Additionally, in our quarterly reviews, we consider these and other factors in estimating the timing and amount of any future costs that may be required for remediation activities, and record a liability when it is probable that a loss has occurred or will occur and the loss can be reasonably estimated. The amount of liability recorded is based on our estimate of the costs to be incurred for remediation at a particular site. We do not discount the recorded liabilities, as the amount and timing of future cash payments are not fixed or cannot be reliably determined. We reasonably cannot determine the extent of our financial exposure in all cases as, although a loss may be probable or reasonably possible, in some cases it is not possible at this time to estimate the loss or reasonably possible loss or range of loss. We also pursue claims for recovery of costs incurred or for contribution to site remediation costs against other PRPs, including the U.S. Government, and are conducting remediation activities under various consent decrees, orders, and agreements relating to soil, groundwater, sediment, or surface water contamination at certain sites of former or current operations. Under agreements related to certain sites in California, New York and Washington, the U.S. Government reimburses us an amount equal to a percentage, specific to each site, of expenditures for certain remediation activities in the U.S. Government’s capacity as a PRP under the Comprehensive Environmental Response, Compensation and Liability Act (CERCLA). In addition to the proceedings and potential proceedings discussed above, California previously established a maximum level of the contaminant hexavalent chromium in drinking water of 10 parts per billion (ppb). This standard was successfully challenged by the California Manufacturers and Technology Association (CMTA) for failure to conduct the required economic feasibility analysis. In response to the court’s ruling, the State Water Resources Control Board (State Board), a branch of the California Environmental Protection Agency, withdrew the hexavalent chromium standard from the published regulations, leaving only the 50 ppb standard for total chromium. The State Board has indicated it will work to re-establish a hexavalent chromium standard. Further, the U.S. Environmental Protection Agency (U.S. EPA) is considering whether to regulate hexavalent chromium. California is also reevaluating its existing drinking water standard of 6 ppb for perchlorate, and the U.S. EPA is taking steps to regulate perchlorate in drinking water. If substantially lower standards are adopted, in either California or at the federal level for perchlorate or for hexavalent chromium, we expect a material increase in our estimates for environmental liabilities and the related assets for the portion of the increased costs that are probable of future recovery in the pricing of our products and services for the U.S. Government. The amount that would be allocable to our non-U.S. Government contracts or that is determined not to be recoverable under U.S. Government contracts would be expensed, which may have a material effect on our earnings in any particular interim reporting period. We are also evaluating the potential impact of existing and contemplated legal requirements addressing a class of compounds known generally as per- and polyfluoroalkyl compounds (PFAS). PFAS compounds have been used ubiquitously, such as in fire-fighting foams, manufacturing processes, and stain- and stick-resistant products (e.g., Teflon, stain-resistant fabrics). Because we have used products and processes over the years containing some of those compounds, it is likely that they exist as contaminants at many of our cleanup sites. Governmental authorities have announced plans, and in some instances have begun, to regulate certain of these compounds at extremely low concentrations in drinking water, which could lead to increased cleanup costs at many of our sites. Letters of Credit, Surety Bonds and Third-Party Guarantees We have entered into standby letters of credit and surety bonds issued on our behalf by financial institutions, and we have directly issued guarantees to third parties primarily relating to advances received from customers and the guarantee of future performance on certain contracts. Letters of credit and surety bonds generally are available for draw down in the event we do not perform. In some cases, we may guarantee the contractual performance of third parties such as joint venture partners. We had total outstanding letters of credit, surety bonds and third-party guarantees aggregating $3.2 billion and $3.6 billion at March 29, 2020 and December 31, 2019 . Third-party guarantees do not include guarantees issued on behalf of subsidiaries and other consolidated entities. At March 29, 2020 and December 31, 2019 , third-party guarantees totaled $725 million and $996 million , of which approximately 67% and 76% related to guarantees of contractual performance of joint ventures to which we currently are or previously were a party. These amounts represent our estimate of the maximum amounts we would expect to incur upon the contractual non-performance of the joint venture, joint venture partners or divested businesses. Generally, we also have cross-indemnities in place that may enable us to recover amounts that may be paid on behalf of a joint venture partner. In determining our exposures, we evaluate the reputation, performance on contractual obligations, technical capabilities and credit quality of our current and former joint venture partners and the transferee under novation agreements all of which include a guarantee as required by the FAR. There were no material amounts recorded in our financial statements related to third-party guarantees or novation agreements.

FAIR VALUE MEASUREMENTS

FAIR VALUE MEASUREMENTS	3 Months Ended
	Mar. 29, 2020
Fair Value Disclosures [Abstract]
FAIR VALUE MEASUREMENTS	FAIR VALUE MEASUREMENTS Assets and liabilities measured and recorded at fair value on a recurring basis consisted of the following (in millions): March 29, 2020 December 31, 2019 Total Level 1 Level 2 Total Level 1 Level 2 Assets Mutual funds $ 979 $ 979 $ — $ 1,363 $ 1,363 $ — U.S. Government securities 77 — 77 99 — 99 Other securities 299 132 167 319 171 148 Derivatives 66 — 66 18 — 18 Liabilities Derivatives 37 — 37 23 — 23 Assets measured at NAV (a) Other commingled funds 19 19 (a) Net Asset Value (NAV) is the total value of the fund divided by the number of the fund’s shares outstanding. Substantially all assets measured at fair value, other than derivatives, represent investments held in a separate trust to fund certain of our non-qualified deferred compensation plans and are recorded in other noncurrent assets on our consolidated balance sheets. The fair values of mutual funds and certain other securities are determined by reference to the quoted market price per unit in active markets multiplied by the number of units held without consideration of transaction costs. The fair values of U.S. Government and other securities are determined using pricing models that use observable inputs (e.g., interest rates and yield curves observable at commonly quoted intervals), bids provided by brokers or dealers or quoted prices of securities with similar characteristics. The fair values of derivative instruments, which consist of foreign currency forward contracts, including embedded derivatives, and interest rate swap contracts, are primarily determined based on the present value of future cash flows using model-derived valuations that use observable inputs such as interest rates, credit spreads and foreign currency exchange rates. The derivatives outstanding at both March 29, 2020 and December 31, 2019 consist of foreign currency forward contracts, interest rate swaps and foreign currency related contract embedded derivatives. We use derivative instruments principally to reduce our exposure to market risks from changes in foreign currency exchange rates and interest rates. We do not enter into or hold derivative instruments for speculative trading purposes. We transact business globally and are subject to risks associated with changing foreign currency exchange rates. We enter into foreign currency hedges such as forward and option contracts that change in value as foreign currency exchange rates change. Our most significant foreign currency exposures relate to the British pound sterling, the euro, the Canadian dollar and the Australian dollar. These contracts hedge forecasted foreign currency transactions in order to mitigate fluctuations in our earnings and cash flows associated with changes in foreign currency exchange rates. We designate foreign currency hedges as cash flow hedges. We also are exposed to the impact of interest rate changes primarily through our borrowing activities. For fixed rate borrowings, we may use variable interest rate swaps, effectively converting fixed rate borrowings to variable rate borrowings in order to reduce the amount of interest paid. These swaps are designated as fair value hedges. For variable rate borrowings, we may use fixed interest rate swaps, effectively converting variable rate borrowings to fixed rate borrowings in order to mitigate the impact of interest rate changes on earnings. These swaps are designated as cash flow hedges. We also may enter into derivative instruments that are not designated as hedges and do not qualify for hedge accounting, which are intended to mitigate certain economic exposures. The aggregate notional amount of our outstanding interest rate swaps at both March 29, 2020 and December 31, 2019 was $750 million . The aggregate notional amount of our outstanding foreign currency hedges at March 29, 2020 and December 31, 2019 was $3.5 billion and $3.8 billion . The fair values of our outstanding interest rate swaps and foreign currency hedges at March 29, 2020 and December 31, 2019 were not significant. Derivative instruments did not have a material impact on net earnings and comprehensive income during the quarters ended March 29, 2020 and March 31, 2019 . Substantially all of our derivatives are designated for hedge accounting. In addition to the financial instruments listed in the table above, we hold other financial instruments, including cash and cash equivalents, receivables, accounts payable and debt. The carrying amounts for cash and cash equivalents, receivables and accounts payable approximated their fair values. The estimated fair value of our outstanding debt was $15.7 billion and $15.9 billion at March 29, 2020 and December 31, 2019 . The outstanding principal amount of debt was $13.8 billion at both March 29, 2020 and December 31, 2019 , excluding $1.1 billion and $1.2 billion of unamortized discounts and issuance costs at March 29, 2020 and December 31, 2019 . The estimated fair values of our outstanding debt were determined based on observable inputs (Level 2).

STOCKHOLDERS' EQUITY

STOCKHOLDERS' EQUITY	3 Months Ended
	Mar. 29, 2020
Equity [Abstract]
STOCKHOLDERS' EQUITY	STOCKHOLDERS’ EQUITY Repurchases of Common Stock During the quarter ended March 29, 2020 , we repurchased 0.7 million shares for $264 million under repurchase plans pursuant to Rule 10b5-1 of the Securities Exchange Act of 1934, some of which were settled subsequent to the end of the first quarter. We also entered into an accelerated share repurchase (ASR) agreement to repurchase $500 million of our common stock through April 2020. Under the terms of the ASR agreement, we made a payment of $500 million and received an initial delivery of 1.0 million shares of our common stock. The total number of shares of common stock to be received is based on an average volume-weighted average price (VWAP) of our common stock during the term of the ASR agreement, less a discount and subject to adjustments pursuant to the terms and conditions of the ASR agreement. Based on the average VWAP as of April 20, 2020, we expect to receive approximately 0.5 million additional shares upon final settlement. The total remaining authorization for future common share repurchases under our share repurchase program was $2.0 billion as of March 29, 2020 . As we repurchase our common shares, we reduce common stock for the $1 of par value of the shares repurchased, with the excess purchase price over par value recorded as a reduction of additional paid-in capital. If additional paid-in capital is reduced to zero, we record the remainder of the excess purchase price over par value as a reduction of retained earnings. Due to the volume of repurchases and the prices at which these were made, additional paid-in capital was reduced to zero , with the remainder of the excess purchase price over par value of $733 million recorded as a reduction to retained earnings during the quarter ended March 29, 2020 . Dividends We declared cash dividends totaling $677 million ( $2.40 per share) and $623 million ( $2.20 per share) during the quarters ended March 29, 2020 and March 31, 2019 . Dividends paid during the quarters ended March 29, 2020 and March 31, 2019 are higher than dividends declared due to dividend-equivalents paid to holders of RSUs and PSUs. These dividend-equivalents are accrued during the vesting period and are paid upon the vesting of the RSUs and PSUs. Restricted Stock Unit Grants During the quarter ended March 29, 2020 , we granted certain employees approximately 0.5 million RSUs with a weighted average grant date fair value of $384.17 per RSU. The grant date fair value of these RSUs is equal to the closing market price of our common stock on the grant date less a discount to reflect the delay in payment of dividend-equivalent cash payments that are made only upon vesting, which is generally three years from the grant date. We recognize the grant date fair value of RSUs, less estimated forfeitures, as compensation expense ratably over the requisite service period, which is shorter than the vesting period if the employee is retirement eligible on the date of grant or will become retirement eligible before the end of the vesting period. Accumulated Other Comprehensive Loss Changes in the balance of AOCL, net of tax, consisted of the following (in millions): Postretirement Benefit Plans Other, net AOCL Balance at December 31, 2019 $ (15,528 ) $ (26 ) $ (15,554 ) Other comprehensive income before reclassifications — 5 5 Amounts reclassified from AOCL Recognition of net actuarial losses (a) 172 — 172 Amortization of net prior service credits (a) (62 ) — (62 ) Other — (102 ) (102 ) Total reclassified from AOCL 110 (102 ) 8 Total other comprehensive income 110 (97 ) 13 Balance at March 29, 2020 $ (15,418 ) $ (123 ) $ (15,541 ) Balance at December 31, 2018 $ (14,254 ) $ (67 ) $ (14,321 ) Other comprehensive income before reclassifications — (5 ) (5 ) Amounts reclassified from AOCL Recognition of net actuarial losses (a) 287 — 287 Amortization of net prior service credits (a) (60 ) — (60 ) Other — 5 5 Total reclassified from AOCL 227 5 232 Total other comprehensive income 227 — 227 Balance at March 31, 2019 $ (14,027 ) $ (67 ) $ (14,094 ) (a) Reclassifications from AOCL related to our postretirement benefit plans were recorded as a component of net periodic benefit cost for each period presented (see “ Note 6 – Postretirement Benefit Plans ”).

OTHER

OTHER	3 Months Ended
	Mar. 29, 2020
Accounting Policies [Abstract]
OTHER	OTHER Changes in Estimates Significant estimates and assumptions are made in estimating contract sales and costs, including the profit booking rate. At the outset of a long-term contract, we identify and monitor risks to the achievement of the technical, schedule and cost aspects of the contract, as well as variable consideration, and assess the effects of those risks on our estimates of sales and total costs to complete the contract. The estimates consider the technical requirements (e.g., a newly-developed product versus a mature product), the schedule and associated tasks (e.g., the number and type of milestone events) and costs (e.g., material, labor, subcontractor, overhead, general and administrative and the estimated costs to fulfill our industrial cooperation agreements, sometimes referred to as offset or localization agreements, required under certain contracts with international customers). The initial profit booking rate of each contract considers risks surrounding the ability to achieve the technical requirements, schedule and costs in the initial estimated total costs to complete the contract. Profit booking rates may increase during the performance of the contract if we successfully retire risks surrounding the technical, schedule and cost aspects of the contract, which decreases the estimated total costs to complete the contract or may increase the variable consideration we expect to receive on the contract. Conversely, our profit booking rates may decrease if the estimated total costs to complete the contract increase or our estimates of variable consideration we expect to receive decrease. All of the estimates are subject to change during the performance of the contract and may affect the profit booking rate. When estimates of total costs to be incurred on a contract exceed total estimates of the transaction price, a provision for the entire loss is determined at the contract level and is recorded in the period in which the loss is determined. In addition, comparability of our segment sales, operating profit and operating margin may be impacted favorably or unfavorably by changes in profit booking rates on our contracts for which we recognize revenue over time using the percentage-of-completion cost-to-cost method to measure progress towards completion. Increases in the profit booking rates, typically referred to as risk retirements, usually relate to revisions in the estimated total costs to fulfill the performance obligations that reflect improved conditions on a particular contract. Conversely, conditions on a particular contract may deteriorate, resulting in an increase in the estimated total costs to fulfill the performance obligations and a reduction in the profit booking rate. Increases or decreases in profit booking rates are recognized in the current period and reflect the inception-to-date effect of such changes. Segment operating profit and margin may also be impacted favorably or unfavorably by other items, which may or may not impact sales. Favorable items may include the positive resolution of contractual matters, cost recoveries on severance and restructuring charges, insurance recoveries and gains on sales of assets. Unfavorable items may include the adverse resolution of contractual matters; restructuring charges, except for significant severance actions, which are excluded from segment operating results; reserves for disputes; certain asset impairments; and losses on sales of certain assets. Our consolidated net adjustments not related to volume, including net profit booking rate adjustments and other matters, increased segment operating profit by approximately $465 million during the quarter ended March 29, 2020 and $565 million during the quarter ended March 31, 2019 . These adjustments increased net earnings by approximately $367 million ( $1.30 per share) during the quarter ended March 29, 2020 and $446 million ( $1.57 per share) during the quarter ended March 31, 2019 . We recognized net sales from performance obligations satisfied in prior periods of approximately $530 million during the quarter ended March 29, 2020 and $670 million during the quarter ended March 31, 2019 , which primarily relate to changes in profit booking rates that impacted revenue. As previously disclosed in our 2019 Form 10-K, we are responsible for a program to design, develop and construct a ground-based radar at our Rotary and Mission Systems (RMS) business segment. The program has experienced performance issues for which we have periodically accrued reserves. As of March 29, 2020 , cumulative losses were approximately $225 million on this program. We may continue to experience issues related to customer requirements and our performance under this contract and have to record additional charges. However, based on the losses previously recorded and our current estimate of the sales and costs to complete the program, at this time we do not anticipate that additional losses, if any, would be material to our operating results or financial condition. As previously disclosed in our 2019 Form 10-K, we have a program, EADGE-T, to design, integrate, and install an air missile defense command, control, communications, computers - intelligence (C4I) system for an international customer that has experienced performance issues and for which we have periodically accrued reserves at our RMS business segment. As of March 29, 2020 , cumulative losses remained at approximately $260 million. We continue to monitor program requirements and our performance. At this time, we do not anticipate additional charges that would be material to our operating results or financial condition. As previously disclosed in our 2019 Form 10-K, we have two commercial satellite programs at our Space business segment for which we have experienced performance issues related to the development and integration of a modernized LM 2100 satellite platform. These programs are for the delivery of three satellites in total, including two that launched in 2019 and one that launched in February 2020. We have periodically revised our estimated costs to complete these developmental commercial programs. As of March 29, 2020, cumulative losses remained at approximately $410 million for these programs. We do not anticipate that additional losses, if any, would be material to our operating results or financial condition. As previously disclosed in our 2019 Form 10-K, we are responsible for designing, developing and installing an upgraded turret for the Warrior Capability Sustainment Program. In 2018, we revised our estimated costs to complete the program as a consequence of performance issues, and recorded charges at our MFC business segment. As of March 29, 2020, cumulative losses remained at approximately $140 million on this program. We may continue to experience issues related to customer requirements and our performance under this contract and may have to record additional reserves. However, based on the losses already recorded and our current estimate of the sales and costs to complete the program, at this time we do not anticipate that additional losses, if any, would be material to our operating results or financial condition. Investment in Advanced Military Maintenance, Repair and Overhaul Center LLC (AMMROC) As of March 29, 2020, we had an investment in the AMMROC joint venture, which is located in the United Arab Emirates, with a carrying value of $435 million. We account for our investment in AMMROC using the equity method. Substantially all of AMMROC’s current business is dependent on a single customer contract to provide maintenance, repair and overhaul (MRO) services for fixed and rotary wing military aircraft that was up for re-competition. In April 2020, subsequent to the end of our first quarter, the customer announced its intent to award the contract to a competitor. However, the customer has not yet executed the new contract nor defined when or how the MRO services will transition to the competitor. We are working with AMMROC’s management and our joint venture partner to understand our options, including whether there is a basis to challenge the award and retain the MRO services, explore the possibility of AMMROC continuing to provide MRO services as a subcontractor to the competitor, an opportunity to replace the contract with other customer arrangements, or winding down the business. At this time, we cannot determine the extent of the non-cash impairment charge, if any, related to our investment until we fully evaluate the options described above, the customer’s plan to transition the MRO services to the competitor, what may occur with the remaining portion of AMMROC’s business, the potential liquidation of AMMROC’s assets and a final distribution to the owners, and our rights under jurisdictional law and the joint venture agreement, among other items. However, if the customer moves forward with transitioning the MRO services to the competitor and AMMROC is not a subcontractor (or has only a limited role), we expect there would be an adverse impact to AMMROC’s business and the carrying value of our investment, which could be significant and an impairment could occur as early as the second quarter of 2020. Other than the impact to earnings for a potential non-cash impairment charge, currently we do not expect any other significant impacts to our 2020 operating results, financial position or cash flows. Backlog Backlog (i.e., unfulfilled or remaining performance obligations) represents the sales we expect to recognize for our products and services for which control has not yet transferred to the customer. For our cost-reimbursable and fixed-priced-incentive contracts, the estimated consideration we expect to receive pursuant to the terms of the contract may exceed the contractual award amount. The estimated consideration is determined at the outset of the contract and is continuously reviewed throughout the contract period. In determining the estimated consideration, we consider the risks related to the technical, schedule and cost impacts to complete the contract and an estimate of any variable consideration. Periodically, we review these risks and may increase or decrease backlog accordingly. As the risks on such contracts are successfully retired, the estimated consideration from customers may be reduced, resulting in a reduction of backlog without a corresponding recognition of sales. As of March 29, 2020 , our ending backlog was $144.1 billion . We expect to recognize approximately 37% of our backlog over the next 12 months and approximately 62% over the next 24 months as revenue, with the remainder recognized thereafter. Income Taxes Our effective income tax rate was 15.4% for the quarter ended March 29, 2020 , and 12.4% for the quarter ended March 31, 2019 . The rate for the quarter ended March 31, 2019 benefited from additional tax deductions of $65 million, or $0.23 per share, recorded discretely for 2018, based on proposed tax regulations released on March 4, 2019, which clarified that foreign military sales qualify for foreign derived intangible income treatment. The rates for both periods benefited from tax deductions for employee equity awards, the research and development tax credit, tax deductions for foreign derived intangible income, and dividends paid to the corporation's defined contribution plans with an employee stock ownership plan feature. Sale of Customer Receivables On occasion, our customers may seek deferred payment terms to purchase our products. In connection with these transactions, we may, at our customer’s request, enter into arrangements for the non-recourse sale of customer receivables to unrelated third-party financial institutions. For accounting purposes, these transactions are not discounted and are treated as a sale of receivables as we have no continuing involvement. The sale proceeds from the financial institutions are reflected in our operating cash flows on the statement of cash flows. We sold customer receivables of $146 million during the quarter ended March 29, 2020 and $104 million during the quarter ended March 31, 2019 . There were no gains or losses related to sales of these receivables.

RECENT ACCOUNTING PRONOUNCEMENT

RECENT ACCOUNTING PRONOUNCEMENTS NOT YET ADOPTED	3 Months Ended
	Mar. 29, 2020
Accounting Changes and Error Corrections [Abstract]
RECENT ACCOUNTING PRONOUNCEMENTS NOT YET ADOPTED	RECENT ACCOUNTING PRONOUNCEMENTS NOT YET ADOPTED In 2017, the United Kingdom’s Financial Conduct Authority announced that after 2021 it would no longer compel banks to submit the rates required to calculate the London Interbank Offered Rate (LIBOR) and other interbank offered rates, which have been widely used as reference rates for various securities and financial contracts, including loans, debt and derivatives. This announcement indicates that the continuation of LIBOR on the current basis is not guaranteed after 2021. Regulators in the U.S. and other jurisdictions have been working to replace these rates with alternative reference interest rates that are supported by transactions in liquid and observable markets, such as the Secured Overnight Financing Rate (SOFR). Currently, our credit facility and certain of our debt and derivative instruments reference LIBOR-based rates. The discontinuation of LIBOR will require these arrangements to be modified in order to replace LIBOR with an alternative reference interest rate, which could impact our cost of funds. Our credit facility includes a provision for the determination of a successor LIBOR rate. In March 2020, the FASB issued ASU 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting , which temporarily simplifies the accounting for contract modifications, including hedging relationships, due to the transition from LIBOR and other interbank offered rates to alternative reference interest rates. For example, entities can elect not to remeasure the contracts at the modification date or reassess a previous accounting determination if certain conditions are met. Additionally, entities can elect to continue applying hedge accounting for hedging relationships affected by reference rate reform if certain conditions are met. The new standard was effective upon issuance and generally can be applied to applicable contract modifications through December 31, 2022. We are currently evaluating the impact of the transition from LIBOR to alternative reference interest rates, but do not expect a significant impact to our operating results, financial position or cash flows.

RECENT ACCOUNTING PRONOUNCEME_2

RECENT ACCOUNTING PRONOUNCEMENTS NOT YET ADOPTED (Policies)	3 Months Ended
	Mar. 29, 2020
Accounting Changes and Error Corrections [Abstract]
EARNINGS PER COMMON SHARE	We compute basic and diluted earnings per common share by dividing net earnings by the respective weighted average number of common shares outstanding for the periods presented. Our calculation of diluted earnings per common share also includes the dilutive effects for the assumed vesting of outstanding restricted stock units (RSUs) and performance stock units (PSUs) and exercise of outstanding stock options based on the treasury stock method.
INVENTORY COSTS FOR CONTRACTS	Costs incurred to fulfill a contract in advance of the contract being awarded are included in inventories as work-in-process if we determine that those costs relate directly to a contract or to an anticipated contract that we can specifically
RECENT ACCOUNTING PRONOUNCEMENTS	RECENT ACCOUNTING PRONOUNCEMENTS NOT YET ADOPTED In 2017, the United Kingdom’s Financial Conduct Authority announced that after 2021 it would no longer compel banks to submit the rates required to calculate the London Interbank Offered Rate (LIBOR) and other interbank offered rates, which have been widely used as reference rates for various securities and financial contracts, including loans, debt and derivatives. This announcement indicates that the continuation of LIBOR on the current basis is not guaranteed after 2021. Regulators in the U.S. and other jurisdictions have been working to replace these rates with alternative reference interest rates that are supported by transactions in liquid and observable markets, such as the Secured Overnight Financing Rate (SOFR). Currently, our credit facility and certain of our debt and derivative instruments reference LIBOR-based rates. The discontinuation of LIBOR will require these arrangements to be modified in order to replace LIBOR with an alternative reference interest rate, which could impact our cost of funds. Our credit facility includes a provision for the determination of a successor LIBOR rate. In March 2020, the FASB issued ASU 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting , which temporarily simplifies the accounting for contract modifications, including hedging relationships, due to the transition from LIBOR and other interbank offered rates to alternative reference interest rates. For example, entities can elect not to remeasure the contracts at the modification date or reassess a previous accounting determination if certain conditions are met. Additionally, entities can elect to continue applying hedge accounting for hedging relationships affected by reference rate reform if certain conditions are met. The new standard was effective upon issuance and generally can be applied to applicable contract modifications through December 31, 2022. We are currently evaluating the impact of the transition from LIBOR to alternative reference interest rates, but do not expect a significant impact to our operating results, financial position or cash flows.

EARNINGS PER COMMON SHARE (Tabl

EARNINGS PER COMMON SHARE (Tables)	3 Months Ended
	Mar. 29, 2020
Earnings Per Share [Abstract]
Schedule of Weighted Average Shares Outstanding Used to Compute Earnings Per Common Share	The weighted average number of shares outstanding used to compute earnings per common share were as follows (in millions): Quarters Ended March 29, March 31, Weighted average common shares outstanding for basic computations 281.3 282.5 Weighted average dilutive effect of equity awards 1.3 1.8 Weighted average common shares outstanding for diluted computations 282.6 284.3

INFORMATION ON BUSINESS SEGME_2

INFORMATION ON BUSINESS SEGMENTS (Tables)	3 Months Ended
	Mar. 29, 2020
Segment Reporting [Abstract]
Summary Of Operating Results and Total Assets For Each Business Segment	Summary operating results for each of our business segments were as follows (in millions): Quarters Ended March 29, March 31, Net sales Aeronautics $ 6,369 $ 5,584 Missiles and Fire Control 2,619 2,350 Rotary and Mission Systems 3,746 3,762 Space 2,917 2,640 Total net sales $ 15,651 $ 14,336 Operating profit Aeronautics $ 672 $ 585 Missiles and Fire Control 396 417 Rotary and Mission Systems 376 379 Space 281 334 Total business segment operating profit 1,725 1,715 Unallocated items FAS/CAS operating adjustment (a) 469 512 Stock-based compensation (42 ) (37 ) Other, net (30 ) 93 Total unallocated items 397 568 Total consolidated operating profit $ 2,122 $ 2,283 Intersegment sales Aeronautics $ 59 $ 42 Missiles and Fire Control 136 121 Rotary and Mission Systems 499 499 Space 108 68 Total intersegment sales $ 802 $ 730 (a) The FAS/CAS operating adjustment represents the difference between the service cost component of financial accounting standards (FAS) pension income (expense) and total pension costs recoverable on U.S. Government contracts as determined in accordance with CAS. Our total net FAS/CAS pension adjustment for the quarters ended March 29, 2020 and March 31, 2019 , including the service and non-service cost components of FAS pension income (expense) for our qualified defined benefit pension plans, were as follows (in millions): Quarters Ended March 29, March 31, Total FAS income (expense) and CAS costs FAS pension income (expense) $ 30 $ (273 ) Less: CAS pension cost 494 641 Net FAS/CAS pension adjustment $ 524 $ 368 Service and non-service cost reconciliation FAS pension service cost $ (25 ) $ (129 ) Less: CAS pension cost 494 641 FAS/CAS operating adjustment 469 512 Non-operating FAS pension income (expense) 55 (144 ) Net FAS/CAS pension adjustment $ 524 $ 368 We recover CAS pension and other postretirement benefit plan cost through the pricing of our products and services on U.S. Government contracts and, therefore, recognize CAS cost in each of our business segment’s net sales and cost of sales. Our consolidated financial statements must present FAS pension and other postretirement benefit plan expense calculated in accordance with FAS requirements under U.S. GAAP. The operating portion of the net FAS/CAS pension adjustment represents the difference between the service cost component of FAS pension income (expense) and total CAS pension cost. The non-service FAS pension income (expense) component is included in other non-operating income (expense), net in our consolidated statements of earnings. As a result, to the extent that CAS pension cost exceeds the service cost component of FAS pension income (expense), we have a favorable FAS/CAS operating adjustment. Total assets for each of our business segments were as follows (in millions): March 29, December 31, Assets Aeronautics $ 10,003 $ 9,109 Missiles and Fire Control 5,210 5,030 Rotary and Mission Systems 18,901 18,751 Space 6,164 5,844 Total business segment assets 40,278 38,734 Corporate assets (a) 8,970 8,794 Total assets $ 49,248 $ 47,528 (a) Corporate assets primarily include cash and cash equivalents, deferred income taxes, assets for the portion of environmental costs that are probable of future recovery and investments held in a separate trust. Net sales by products and services, contract type, customer, and geographic region were as follows (in millions): Quarter Ended March 29, 2020 Aeronautics MFC RMS Space Total Net sales Products $ 5,455 $ 2,275 $ 2,986 $ 2,450 $ 13,166 Services 914 344 760 467 2,485 Total net sales $ 6,369 $ 2,619 $ 3,746 $ 2,917 $ 15,651 Net sales by contract type Fixed-price $ 4,584 $ 1,718 $ 2,482 $ 519 $ 9,303 Cost-reimbursable 1,785 901 1,264 2,398 6,348 Total net sales $ 6,369 $ 2,619 $ 3,746 $ 2,917 $ 15,651 Net sales by customer U.S. Government $ 4,033 $ 1,955 $ 2,788 $ 2,483 $ 11,259 International (a) 2,321 660 855 420 4,256 U.S. commercial and other 15 4 103 14 136 Total net sales $ 6,369 $ 2,619 $ 3,746 $ 2,917 $ 15,651 Net sales by geographic region United States $ 4,048 $ 1,959 $ 2,891 $ 2,497 $ 11,395 Asia Pacific 995 75 318 28 1,416 Europe 948 168 167 398 1,681 Middle East 328 407 207 (6 ) 936 Other 50 10 163 — 223 Total net sales $ 6,369 $ 2,619 $ 3,746 $ 2,917 $ 15,651 Quarter Ended March 31, 2019 Aeronautics MFC RMS Space Total Net sales Products $ 4,796 $ 1,916 $ 3,059 $ 2,199 $ 11,970 Services 788 434 703 441 2,366 Total net sales $ 5,584 $ 2,350 $ 3,762 $ 2,640 $ 14,336 Net sales by contract type Fixed-price $ 4,170 $ 1,535 $ 2,619 $ 523 $ 8,847 Cost-reimbursable 1,414 815 1,143 2,117 5,489 Total net sales $ 5,584 $ 2,350 $ 3,762 $ 2,640 $ 14,336 Net sales by customer U.S. Government $ 3,435 $ 1,633 $ 2,675 $ 2,236 $ 9,979 International (a) 2,095 670 995 395 4,155 U.S. commercial and other 54 47 92 9 202 Total net sales $ 5,584 $ 2,350 $ 3,762 $ 2,640 $ 14,336 Net sales by geographic region United States $ 3,489 $ 1,680 $ 2,767 $ 2,245 $ 10,181 Asia Pacific 906 122 330 8 1,366 Europe 798 122 198 381 1,499 Middle East 337 413 285 6 1,041 Other 54 13 182 — 249 Total net sales $ 5,584 $ 2,350 $ 3,762 $ 2,640 $ 14,336 (a) International sales include foreign military sales (FMS) contracted through the U.S. Government and direct commercial sales to international governments and other international customers.

CONTRACT ASSETS AND LIABILITI_2

CONTRACT ASSETS AND LIABILITIES (Tables)	3 Months Ended
	Mar. 29, 2020
Revenue from Contract with Customer [Abstract]
Summary of Contract Assets and Liabilities	Contract assets and contract liabilities were as follows (in millions): March 29, December 31, Contract assets $ 10,189 $ 9,094 Contract liabilities 7,205 7,054

INVENTORIES (Tables)

INVENTORIES (Tables)	3 Months Ended
	Mar. 29, 2020
Inventory Disclosure [Abstract]
Schedule of Inventories, Net	Inventories consisted of the following (in millions): March 29, December 31, Materials, spares and supplies $ 521 $ 532 Work-in-process 2,717 2,783 Finished goods 301 304 Total inventories $ 3,539 $ 3,619

POSTRETIREMENT BENEFIT PLANS (T

POSTRETIREMENT BENEFIT PLANS (Tables)	3 Months Ended
	Mar. 29, 2020
Retirement Benefits [Abstract]
Schedule of Pretax Net Periodic Benefit Cost	Our pretax net periodic benefit (income) cost related to our qualified defined benefit pension plans and retiree medical and life insurance plans consisted of the following (in millions): Quarters Ended March 29, March 31, Qualified defined benefit pension plans Service cost $ 25 $ 129 Interest cost 385 452 Expected return on plan assets (566 ) (575 ) Recognized net actuarial losses 212 351 Amortization of prior service credits (86 ) (84 ) Total net periodic benefit (income) cost $ (30 ) $ 273 Retiree medical and life insurance plans Service cost $ 3 $ 4 Interest cost 18 24 Expected return on plan assets (32 ) (28 ) Recognized net actuarial losses (1 ) 1 Amortization of prior service costs 10 10 Total net periodic benefit (income) cost $ (2 ) $ 11

FAIR VALUE MEASUREMENTS (Tables

FAIR VALUE MEASUREMENTS (Tables)	3 Months Ended
	Mar. 29, 2020
Fair Value Disclosures [Abstract]
Schedule of Assets and Liabilities Measured and Recorded at Fair Value	Assets and liabilities measured and recorded at fair value on a recurring basis consisted of the following (in millions): March 29, 2020 December 31, 2019 Total Level 1 Level 2 Total Level 1 Level 2 Assets Mutual funds $ 979 $ 979 $ — $ 1,363 $ 1,363 $ — U.S. Government securities 77 — 77 99 — 99 Other securities 299 132 167 319 171 148 Derivatives 66 — 66 18 — 18 Liabilities Derivatives 37 — 37 23 — 23 Assets measured at NAV (a) Other commingled funds 19 19 (a) Net Asset Value (NAV) is the total value of the fund divided by the number of the fund’s shares outstanding.

STOCKHOLDERS' EQUITY (Tables)

STOCKHOLDERS' EQUITY (Tables)	3 Months Ended
	Mar. 29, 2020
Equity [Abstract]
Schedule of Changes in the Balance of AOCL, Net of Tax	Changes in the balance of AOCL, net of tax, consisted of the following (in millions): Postretirement Benefit Plans Other, net AOCL Balance at December 31, 2019 $ (15,528 ) $ (26 ) $ (15,554 ) Other comprehensive income before reclassifications — 5 5 Amounts reclassified from AOCL Recognition of net actuarial losses (a) 172 — 172 Amortization of net prior service credits (a) (62 ) — (62 ) Other — (102 ) (102 ) Total reclassified from AOCL 110 (102 ) 8 Total other comprehensive income 110 (97 ) 13 Balance at March 29, 2020 $ (15,418 ) $ (123 ) $ (15,541 ) Balance at December 31, 2018 $ (14,254 ) $ (67 ) $ (14,321 ) Other comprehensive income before reclassifications — (5 ) (5 ) Amounts reclassified from AOCL Recognition of net actuarial losses (a) 287 — 287 Amortization of net prior service credits (a) (60 ) — (60 ) Other — 5 5 Total reclassified from AOCL 227 5 232 Total other comprehensive income 227 — 227 Balance at March 31, 2019 $ (14,027 ) $ (67 ) $ (14,094 ) (a) Reclassifications from AOCL related to our postretirement benefit plans were recorded as a component of net periodic benefit cost for each period presented (see “ Note 6 – Postretirement Benefit Plans ”).

EARNINGS PER COMMON SHARE - Sch

EARNINGS PER COMMON SHARE - Schedule of Weighted Average Shares Outstanding Used to Compute Earnings Per Common Share (Details) - shares shares in Millions	3 Months Ended
	Mar. 29, 2020	Mar. 31, 2019
Earnings Per Share [Abstract]
Weighted average common shares outstanding for basic computations (in shares)	281.3	282.5
Weighted average dilutive effect of equity awards (in shares)	1.3	1.8
Weighted average common shares outstanding for diluted computations (in shares)	282.6	284.3

EARNINGS PER COMMON SHARE - Nar

EARNINGS PER COMMON SHARE - Narrative (Details) - shares shares in Millions	3 Months Ended
	Mar. 29, 2020	Mar. 31, 2019
Earnings Per Share [Abstract]
Significant anti-dilutive equity awards (in shares)	0	0

INFORMATION ON BUSINESS SEGME_3

INFORMATION ON BUSINESS SEGMENTS - Narrative (Details) - segment	3 Months Ended
	Mar. 29, 2020	Mar. 31, 2019
Segment Reporting [Abstract]
Number of business segments	4
Product Concentration Risk | Sales Revenue, Net | F-35 program | Aeronautics
Segment Reporting Information [Line Items]
Net sales for the F-35 program representing total consolidated net sales (as a percent)	28.00%	26.00%

INFORMATION ON BUSINESS SEGME_4

INFORMATION ON BUSINESS SEGMENTS - Summary of Operating Results For Each Business Segment (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 29, 2020	Mar. 31, 2019
Net sales
Total net sales	$ 15,651	$ 14,336
Operating profit
Total operating profit	2,122	2,283
Aeronautics
Net sales
Total net sales	6,369	5,584
Missiles and Fire Control
Net sales
Total net sales	2,619	2,350
Rotary and Mission Systems
Net sales
Total net sales	3,746	3,762
Space
Net sales
Total net sales	2,917	2,640
Business segments
Net sales
Total net sales	15,651	14,336
Operating profit
Total operating profit	1,725	1,715
Business segments | Aeronautics
Net sales
Total net sales	6,369	5,584
Operating profit
Total operating profit	672	585
Business segments | Missiles and Fire Control
Net sales
Total net sales	2,619	2,350
Operating profit
Total operating profit	396	417
Business segments | Rotary and Mission Systems
Net sales
Total net sales	3,746	3,762
Operating profit
Total operating profit	376	379
Business segments | Space
Net sales
Total net sales	2,917	2,640
Operating profit
Total operating profit	281	334
Segment reconciling items
Unallocated items
FAS/CAS operating adjustment	469	512
Stock-based compensation	(42)	(37)
Other, net	(30)	93
Total unallocated items	397	568
Intersegment sales
Net sales
Total net sales	802	730
Intersegment sales | Aeronautics
Net sales
Total net sales	59	42
Intersegment sales | Missiles and Fire Control
Net sales
Total net sales	136	121
Intersegment sales | Rotary and Mission Systems
Net sales
Total net sales	499	499
Intersegment sales | Space
Net sales
Total net sales	$ 108	$ 68

INFORMATION ON BUSINESS SEGME_5

INFORMATION ON BUSINESS SEGMENTS - FAS/CAS Pension Adjustment (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 29, 2020	Mar. 31, 2019
Segment Reporting Information [Line Items]
Non-operating FAS pension income (expense)	$ 55	$ (144)
Net FAS/CAS pension adjustment	524	368
Segment reconciling items
Segment Reporting Information [Line Items]
Less: CAS pension cost	494	641
FAS pension service cost	(25)	(129)
FAS/CAS operating adjustment	469	512
Qualified defined benefit pension plans
Segment Reporting Information [Line Items]
FAS pension income (expense)	(30)	273
FAS pension service cost	(25)	(129)
Qualified defined benefit pension plans | Qualified Plan
Segment Reporting Information [Line Items]
FAS pension income (expense)	$ 30	$ (273)

INFORMATION ON BUSINESS SEGME_6

INFORMATION ON BUSINESS SEGMENTS - Income Statement Information For Each Segment (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 29, 2020	Mar. 31, 2019
Net sales
Net sales	$ 15,651	$ 14,336
Aeronautics
Net sales
Net sales	6,369	5,584
MFC
Net sales
Net sales	2,619	2,350
RMS
Net sales
Net sales	3,746	3,762
Space
Net sales
Net sales	2,917	2,640
United States
Net sales
Net sales	11,395	10,181
United States | Aeronautics
Net sales
Net sales	4,048	3,489
United States | MFC
Net sales
Net sales	1,959	1,680
United States | RMS
Net sales
Net sales	2,891	2,767
United States | Space
Net sales
Net sales	2,497	2,245
Asia Pacific
Net sales
Net sales	1,416	1,366
Asia Pacific | Aeronautics
Net sales
Net sales	995	906
Asia Pacific | MFC
Net sales
Net sales	75	122
Asia Pacific | RMS
Net sales
Net sales	318	330
Asia Pacific | Space
Net sales
Net sales	28	8
Europe
Net sales
Net sales	1,681	1,499
Europe | Aeronautics
Net sales
Net sales	948	798
Europe | MFC
Net sales
Net sales	168	122
Europe | RMS
Net sales
Net sales	167	198
Europe | Space
Net sales
Net sales	398	381
Middle East
Net sales
Net sales	936	1,041
Middle East | Aeronautics
Net sales
Net sales	328	337
Middle East | MFC
Net sales
Net sales	407	413
Middle East | RMS
Net sales
Net sales	207	285
Middle East | Space
Net sales
Net sales	(6)	6
Other
Net sales
Net sales	223	249
Other | Aeronautics
Net sales
Net sales	50	54
Other | MFC
Net sales
Net sales	10	13
Other | RMS
Net sales
Net sales	163	182
Other | Space
Net sales
Net sales	0	0
U.S. Government
Net sales
Net sales	11,259	9,979
U.S. Government | Aeronautics
Net sales
Net sales	4,033	3,435
U.S. Government | MFC
Net sales
Net sales	1,955	1,633
U.S. Government | RMS
Net sales
Net sales	2,788	2,675
U.S. Government | Space
Net sales
Net sales	2,483	2,236
International
Net sales
Net sales	4,256	4,155
International | Aeronautics
Net sales
Net sales	2,321	2,095
International | MFC
Net sales
Net sales	660	670
International | RMS
Net sales
Net sales	855	995
International | Space
Net sales
Net sales	420	395
U.S. commercial and other
Net sales
Net sales	136	202
U.S. commercial and other | Aeronautics
Net sales
Net sales	15	54
U.S. commercial and other | MFC
Net sales
Net sales	4	47
U.S. commercial and other | RMS
Net sales
Net sales	103	92
U.S. commercial and other | Space
Net sales
Net sales	14	9
Fixed-price
Net sales
Net sales	9,303	8,847
Fixed-price | Aeronautics
Net sales
Net sales	4,584	4,170
Fixed-price | MFC
Net sales
Net sales	1,718	1,535
Fixed-price | RMS
Net sales
Net sales	2,482	2,619
Fixed-price | Space
Net sales
Net sales	519	523
Cost-reimbursable
Net sales
Net sales	6,348	5,489
Cost-reimbursable | Aeronautics
Net sales
Net sales	1,785	1,414
Cost-reimbursable | MFC
Net sales
Net sales	901	815
Cost-reimbursable | RMS
Net sales
Net sales	1,264	1,143
Cost-reimbursable | Space
Net sales
Net sales	2,398	2,117
Products
Net sales
Net sales	13,166	11,970
Products | Aeronautics
Net sales
Net sales	5,455	4,796
Products | MFC
Net sales
Net sales	2,275	1,916
Products | RMS
Net sales
Net sales	2,986	3,059
Products | Space
Net sales
Net sales	2,450	2,199
Services
Net sales
Net sales	2,485	2,366
Services | Aeronautics
Net sales
Net sales	914	788
Services | MFC
Net sales
Net sales	344	434
Services | RMS
Net sales
Net sales	760	703
Services | Space
Net sales
Net sales	$ 467	$ 441

INFORMATION ON BUSINESS SEGME_7

INFORMATION ON BUSINESS SEGMENTS - Total Assets For Each Business Segment (Details) - USD ($) $ in Millions	Mar. 29, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Total assets	$ 49,248	$ 47,528
Business segments
Segment Reporting Information [Line Items]
Total assets	40,278	38,734
Business segments | Aeronautics
Segment Reporting Information [Line Items]
Total assets	10,003	9,109
Business segments | Missiles and Fire Control
Segment Reporting Information [Line Items]
Total assets	5,210	5,030
Business segments | Rotary and Mission Systems
Segment Reporting Information [Line Items]
Total assets	18,901	18,751
Business segments | Space
Segment Reporting Information [Line Items]
Total assets	6,164	5,844
Corporate
Segment Reporting Information [Line Items]
Total assets	$ 8,970	$ 8,794

CONTRACT ASSETS AND LIABILITI_3

CONTRACT ASSETS AND LIABILITIES (Details) - USD ($) $ in Millions	Mar. 29, 2020	Dec. 31, 2019
Revenue from Contract with Customer [Abstract]
Contract assets	$ 10,189	$ 9,094
Contract liabilities	$ 7,205	$ 7,054

CONTRACT ASSETS AND LIABILITI_4

CONTRACT ASSETS AND LIABILITIES - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 29, 2020	Mar. 31, 2019
Revenue from Contract with Customer [Abstract]
Increase in contract assets	$ 1,095	$ 1,025
Impairment loss	0	0
Increase in contract liabilities	151	305
Liability, revenue recognized	$ 1,600	$ 1,800

INVENTORIES (Details)

INVENTORIES (Details) - USD ($) $ in Millions	Mar. 29, 2020	Dec. 31, 2019
Inventory Disclosure [Abstract]
Materials, spares and supplies	$ 521	$ 532
Work-in-process	2,717	2,783
Finished goods	301	304
Total inventories	3,539	3,619
Capitalized contract cost	$ 519	$ 493

POSTRETIREMENT BENEFIT PLANS -

POSTRETIREMENT BENEFIT PLANS - Schedule of Pretax Net Periodic Benefit Cost (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 29, 2020	Mar. 31, 2019
Qualified defined benefit pension plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	$ 25	$ 129
Interest cost	385	452
Expected return on plan assets	(566)	(575)
Recognized net actuarial losses	212	351
Amortization of prior service credits	(86)	(84)
Total net periodic benefit (income) cost	(30)	273
Retiree medical and life insurance plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	3	4
Interest cost	18	24
Expected return on plan assets	(32)	(28)
Recognized net actuarial losses	(1)	1
Amortization of prior service credits	10	10
Total net periodic benefit (income) cost	$ (2)	$ 11

POSTRETIREMENT BENEFIT PLANS _2

POSTRETIREMENT BENEFIT PLANS - Narrative (Details) - USD ($)	3 Months Ended
	Mar. 29, 2020	Mar. 31, 2019
Defined Benefit Plan Disclosure [Line Items]
Recognition of previously deferred postretirement benefit plan amounts, before tax	$ 140,000,000	$ 289,000,000
Recognition of previously deferred postretirement benefit plan amounts, net of tax	110,000,000	227,000,000
Retiree medical and life insurance plans
Defined Benefit Plan Disclosure [Line Items]
Recognition of previously deferred postretirement benefit plan amounts, before tax	5,000,000	11,000,000
Qualified defined benefit pension plans
Defined Benefit Plan Disclosure [Line Items]
Material contributions to qualified defined benefit pension plans	$ 0	$ 0

LEGAL PROCEEDINGS AND CONTING_2

LEGAL PROCEEDINGS AND CONTINGENCIES (Details) $ in Millions	Aug. 16, 2016USD ($)	Dec. 31, 2014	Mar. 29, 2020USD ($)subsidiary	Dec. 31, 2018	Dec. 31, 2016	Dec. 31, 2019USD ($)	May 31, 2017lawsuit	Apr. 24, 2009USD ($)
Loss Contingencies [Line Items]
Damages sought by plaintiff			$ 52
Liabilities recorded relative to environmental matters			812			$ 810
Environmental costs eligible for future recovery			$ 705			703
Period over which costs and recovery of costs is projected			20 years
Outstanding letters of credit, surety bonds, and third-party guarantees			$ 3,200			3,600
Third-party guarantees			$ 725			$ 996
Guarantees of contractual performance of joint ventures (as a percent)			67.00%	76.00%
N.Y. Metropolitan Transportation Authority
Loss Contingencies [Line Items]
Damages sought by plaintiff			$ 190
Contract value								$ 323
Contract payments received to date			241
Claims for monetary damages against the plaintiff			$ 95
Period of bench trial		35 days
Leidos Holdings, Inc.
Loss Contingencies [Line Items]
Reserve transferred	$ 38
Indemnification percent, up to maximum reserve					100.00%
Maximum reserve	$ 64
Indemnification percent in excess of maximum reserve					50.00%
Sikorsky Aircraft Corporation
Loss Contingencies [Line Items]
Number of pending claims | lawsuit							2
Number of entities involved in litigation | subsidiary			2

FAIR VALUE MEASUREMENTS - Sched

FAIR VALUE MEASUREMENTS - Schedule of Assets and Liabilities Measured and Recorded at Fair Value (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Millions	Mar. 29, 2020	Dec. 31, 2019
Assets
Derivatives	$ 66	$ 18
Liabilities
Derivatives	37	23
Mutual funds
Assets
Fair Value of Investments	979	1,363
U.S. Government securities
Assets
Fair Value of Investments	77	99
Other securities
Assets
Fair Value of Investments	299	319
Level 1
Assets
Derivatives	0	0
Liabilities
Derivatives	0	0
Level 1 | Mutual funds
Assets
Fair Value of Investments	979	1,363
Level 1 | U.S. Government securities
Assets
Fair Value of Investments	0	0
Level 1 | Other securities
Assets
Fair Value of Investments	132	171
Level 2
Assets
Derivatives	66	18
Liabilities
Derivatives	37	23
Level 2 | Mutual funds
Assets
Fair Value of Investments	0	0
Level 2 | U.S. Government securities
Assets
Fair Value of Investments	77	99
Level 2 | Other securities
Assets
Fair Value of Investments	167	148
NAV | Other commingled funds
Liabilities
Assets measured at NAV	$ 19	$ 19

FAIR VALUE MEASUREMENTS - Narra

FAIR VALUE MEASUREMENTS - Narrative (Details) - USD ($) $ in Millions	Mar. 29, 2020	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Outstanding principal amount	$ 13,800	$ 13,800
Unamortized discounts and issuance costs	1,100
Interest rate swaps | Designated as hedges
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Aggregate notional amount of outstanding interest rate swaps	750	750
Foreign currency hedges | Designated as hedges
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Aggregate notional amount of outstanding interest rate swaps	3,500	3,800
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated fair value of outstanding debt	$ 15,700	$ 15,900

STOCKHOLDERS' EQUITY - Repurcha

STOCKHOLDERS' EQUITY - Repurchases of Common Stock (Narrative) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	Apr. 20, 2020	Mar. 29, 2020	Mar. 31, 2019	Dec. 31, 2019
Shareholders Equity [Line Items]
Common stock repurchased (in shares)		0.7
Reduction to stockholders' equity due to repurchases of common stock		$ 764	$ 284
Cash paid for repurchases of common stock		756	281
Total remaining authorization for future common share repurchases		$ 2,000
Par value of shares repurchased (in dollars per share)		$ 1		$ 1
Additional paid-in capital after reduction		$ 0		$ 0
Reduction to retained earnings
Shareholders Equity [Line Items]
Reduction to stockholders' equity due to repurchases of common stock		733	$ 237
Rule 10b-1
Shareholders Equity [Line Items]
Reduction to stockholders' equity due to repurchases of common stock		264
Accelerated Share Repurchase Agreement
Shareholders Equity [Line Items]
Reduction to stockholders' equity due to repurchases of common stock		1
Accelerate Share Repurchase (ASR) authorized amount		500
Cash paid for repurchases of common stock		$ 500
Subsequent Event | Accelerated Share Repurchase Agreement
Shareholders Equity [Line Items]
Reduction to stockholders' equity due to repurchases of common stock	$ 0.5

STOCKHOLDERS' EQUITY - Dividend

STOCKHOLDERS' EQUITY - Dividends (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 29, 2020	Mar. 31, 2019
Equity [Abstract]
Cash dividends paid and unpaid, amount	$ 677	$ 623
Cash dividends declared (in dollars per share)	$ 2.40	$ 2.20

STOCKHOLDERS' EQUITY - Restrict

STOCKHOLDERS' EQUITY - Restricted Stock Unit Grants (Narrative) (Details) - RSUs shares in Millions	3 Months Ended
	Mar. 29, 2020$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
RSUs granted to certain employees (in shares) | shares	0.5
Grant date fair value per RSU (in dollars per share) | $ / shares	$ 384.17
Award vesting period	3 years

STOCKHOLDERS' EQUITY - Schedule

STOCKHOLDERS' EQUITY - Schedule of Changes in the Balance of AOCL, Net of Tax (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 29, 2020	Mar. 31, 2019
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax
Beginning Balance	$ 3,171	$ 1,449
Other comprehensive income before reclassifications	5	(5)
Total reclassified from AOCL	8	232
Other comprehensive income, net of tax	13	227
Ending Balance	3,487	2,522
Postretirement Benefit Plans
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax
Beginning Balance	(15,528)	(14,254)
Other comprehensive income before reclassifications	0	0
Total reclassified from AOCL	110	227
Other comprehensive income, net of tax	110	227
Ending Balance	(15,418)	(14,027)
Other, net
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax
Beginning Balance	(26)	(67)
Other comprehensive income before reclassifications	5	(5)
Total reclassified from AOCL	(102)	5
Other comprehensive income, net of tax	(97)	0
Ending Balance	(123)	(67)
AOCL
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax
Beginning Balance	(15,554)	(14,321)
Other comprehensive income, net of tax	13	227
Ending Balance	(15,541)	(14,094)
Recognition of net actuarial losses
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax
Total reclassified from AOCL	172	287
Amortization of net prior service credits
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax
Total reclassified from AOCL	(62)	(60)
Other
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax
Total reclassified from AOCL	$ (102)	$ 5

OTHER - Changes in Estimates an

OTHER - Changes in Estimates and Backlog (Details) $ / shares in Units, $ in Millions	1 Months Ended	3 Months Ended		12 Months Ended
	Feb. 29, 2020satellite	Mar. 29, 2020USD ($)satelliteprogram$ / shares	Mar. 31, 2019USD ($)$ / shares	Dec. 31, 2019satellite
Change in Accounting Estimate [Line Items]
Performance obligation satisfied in previous period		$ 530	$ 670
Number of satellites launched or to be launched | satellite	1	3		2
EADGE-T
Change in Accounting Estimate [Line Items]
Cumulative losses on development		$ 260
Ground Based Radar
Change in Accounting Estimate [Line Items]
Cumulative losses on development		225
LM 2100 Project
Change in Accounting Estimate [Line Items]
Cumulative losses on development		410
Warrior Capability Sustainment Program
Change in Accounting Estimate [Line Items]
Cumulative losses on development		140
Contracts Accounted for under Percentage of Completion
Change in Accounting Estimate [Line Items]
Increase in operating profit due to profit rate adjustments		465	565
Increase in net earnings due to profit rate adjustments		$ 367	$ 446
Increase in diluted earnings per common share due to profit rate adjustments (in dollars per share) | $ / shares		$ 1.30	$ 1.57
Space
Change in Accounting Estimate [Line Items]
Number of commercial satellite programs with performance issues | program		2

OTHER - Backlog (Details)

OTHER - Backlog (Details) $ in Billions	Mar. 29, 2020USD ($)
Accounting Policies [Abstract]
Remaining performance obligation	$ 144.1
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-03-30
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, percentage	37.00%
Expected time of satisfaction	12 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-03-29
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, percentage	25.00%
Expected time of satisfaction	12 months

OTHER - Income Taxes (Narrative

OTHER - Income Taxes (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 29, 2020	Mar. 31, 2019
Accounting Policies [Abstract]
Effective income tax rate	15.40%	12.40%
Foreign derived intangible income deduction related to prior year		$ 65
Foreign derived intangible income deduction related to prior year (in dollars per share)		$ 0.23

OTHER - Sale of Customer Receiv

OTHER - Sale of Customer Receivables (Details) - USD ($)	3 Months Ended
	Mar. 29, 2020	Mar. 31, 2019
Accounting Policies [Abstract]
Customer receivables sold	$ 146,000,000	$ 104,000,000
Gains or losses related to sales of receivables	$ 0	$ 0

OTHER - Investments (Details)

OTHER - Investments (Details) $ in Millions	Mar. 29, 2020USD ($)
AMMROC
Investment Holdings [Line Items]
Equity method investments	$ 435