L3 10-Q 27 Apr 16 2016 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 25, 2016	Apr. 22, 2016
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 25, 2016
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	Q1
Trading Symbol	LLL
Entity Registrant Name	L 3 COMMUNICATIONS HOLDINGS INC
Entity Central Index Key	1,056,239
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		76,952,735

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Mar. 25, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 534	$ 207
Billed receivables, net of allowances of $13 in 2016 and $15 in 2015	779	746
Contracts in process	2,226	2,081
Inventories	351	333
Other current assets	$ 173	201
Assets of discontinued operations		664
Total current assets	$ 4,063	4,232
Property, plant and equipment, net	1,085	1,097
Goodwill	6,306	6,281
Identifiable intangible assets	195	199
Deferred income taxes	4	3
Other assets	258	255
Total assets	11,911	12,067
Current liabilities:
Current portion of long-term debt	499	499
Accounts payable, trade	407	297
Accrued employment costs	466	504
Accrued expenses	406	390
Advance payments and billings in excess of costs incurred	495	562
Income taxes	3	13
Other current liabilities	403	394
Liabilities of discontinued operations		220
Total current liabilities	2,679	2,879
Pension and postretirement benefits	1,045	1,047
Deferred income taxes	238	219
Other liabilities	371	368
Long-term debt	3,127	3,125
Total liabilities	$ 7,460	$ 7,638
Commitments and contingencies (see Note 18)
L-3 shareholders' equity:
L-3 Communications Holdings, Inc.'s common stock: $.01 par value; 300,000,000 shares authorized, 77,340,520 shares outstanding at March 25, 2016 and 78,133,763 shares outstanding at December 31, 2015 (L-3 Communications Corporation's common stock: $.01 par value, 100 shares authorized, issued and outstanding)	$ 6,084	$ 6,052
L-3 Communications Holdings, Inc.'s treasury stock (at cost), 81,083,248 shares at March 25, 2016 and 79,375,063 shares at December 31, 2015	(7,049)	(6,851)
Retained earnings	5,901	5,728
Accumulated other comprehensive loss	(558)	(574)
Total L-3 shareholders' equity	4,378	4,355
Noncontrolling interests	73	74
Total equity	4,451	4,429
Total liabilities and equity	$ 11,911	$ 12,067

Condensed Consolidated Balance3

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Mar. 25, 2016	Dec. 31, 2015
Class of Stock [Line Items]
Allowances for billed receivables	$ 13	$ 15
L-3 Communications Holdings, Inc. [Member]
Class of Stock [Line Items]
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	300,000,000	300,000,000
Common stock, shares outstanding	77,340,520	78,133,763
Treasury stock (at cost), shares	81,083,248	79,375,063
L-3 Communications Corporation [Member]
Class of Stock [Line Items]
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	100	100
Common stock, shares issued	100	100
Common stock, shares outstanding	100	100

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 25, 2016	Mar. 27, 2015
Net sales:
Products	$ 1,423	$ 1,538
Services	930	950
Total net sales	2,353	2,488
Cost of sales:
Products	(1,266)	(1,382)
Services	(835)	(897)
Total cost of sales	$ (2,101)	(2,279)
Loss related to business divestiture		(22)
Operating income	$ 252	187
Interest expense	(41)	(39)
Interest and other income, net	4	3
Income from continuing operations before income taxes	215	151
Provision for income taxes	(48)	(46)
Income from continuing operations	167	105
Income from discontinued operations, net of income taxes	63	4
Net income	230	109
Net income from continuing operations attributable to noncontrolling interests	(3)	(4)
Net income (loss) attributable to L-3	$ 227	$ 105
Basic earnings per share attributable to L-3 Holdings' common shareholders:
Continuing operations	$ 2.11	$ 1.23
Discontinued operations	0.81	0.05
Basic earnings per share	2.92	1.28
Diluted earnings per share attributable to L-3 Holdings' common shareholders:
Continuing operations	2.08	1.20
Discontinued operations	0.79	0.05
Diluted earnings per share	2.87	1.25
Cash dividends declared per common share	$ 0.70	$ 0.65
L-3 Holdings' weighted average common shares outstanding:
Basic	77.8	82.3
Diluted	79	83.8

Condensed Consolidated Stateme5

Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions		3 Months Ended
		Mar. 25, 2016	Mar. 27, 2015
Statement of Comprehensive Income [Abstract]
Net income		$ 230	$ 109
Other comprehensive income (loss):
Foreign currency translation adjustments		1	(87)
Unrealized gains (losses) on hedging instruments	[1]	7	(3)
Pension and postretirement benefit plans:
Amortization of net loss and prior service cost previously recognized	[2]	8	11
Total other comprehensive income (loss)		16	(79)
Comprehensive income		246	30
Comprehensive income attributable to noncontrolling interests		(3)	(4)
Comprehensive income attributable to L-3		$ 243	$ 26
[1]	Net of income taxes of $3 million for the quarterly period ended March 25, 2016.
[2]	Net of income taxes of $4 million and $6 million for the quarterly periods ended March 25, 2016 and March 27, 2015, respectively.

Condensed Consolidated Stateme6

Condensed Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Millions	3 Months Ended
	Mar. 25, 2016	Mar. 27, 2015
Statement of Comprehensive Income [Abstract]
Net of income taxes on unrealized gains (losses) on hedging instruments	$ 3
Income taxes on amortization of net loss and prior service cost previously recognized	$ 4	$ 6

Condensed Consolidated Stateme7

Condensed Consolidated Statements of Equity - USD ($) shares in Millions, $ in Millions	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]	Noncontrolling Interests [Member]
Beginning Balance at Dec. 31, 2014	$ 5,360	$ 1	$ 5,798	$ (6,111)	$ 6,181	$ (584)	$ 75
Beginning Balance, Shares at Dec. 31, 2014		82
Class of Stock [Line Items]
Net income	109				105		4
Other comprehensive income (loss)	(79)					(79)
Distributions to noncontrolling interests	(5)						(5)
Cash dividends declared on common stock	(55)				(55)
Shares issued:
Employee savings plans	29		29
Employee savings plans, Shares		0.3
Exercise of stock options	$ 60		60
Exercise of stock options, Shares		0.5
Employee stock purchase plan
Employee stock purchase plan, Shares		0.1
Vesting of restricted stock and performance units
Vesting of restricted stock and performance units, Shares		0.7
Employee restricted stock units surrendered in lieu of income tax withholding	$ (33)		(33)
Employee restricted stock units surrendered in lieu of income tax withholding, Shares		(0.2)
Stock-based compensation expense	13		13
Treasury stock purchased	(100)			(100)
Treasury stock purchased, Shares		(0.8)
Other	3		3
Other, Shares
Ending Balance at Mar. 27, 2015	5,302	$ 1	5,870	(6,211)	6,231	(663)	74
Ending Balance, Shares at Mar. 27, 2015		82.6
Beginning Balance at Dec. 31, 2015	4,429	$ 1	6,051	(6,851)	5,728	(574)	74
Beginning Balance, Shares at Dec. 31, 2015		78.1
Class of Stock [Line Items]
Net income	230				227		3
Other comprehensive income (loss)	16					16
Distributions to noncontrolling interests	(4)						(4)
Cash dividends declared on common stock	(54)				(54)
Shares issued:
Employee savings plans	32		32
Employee savings plans, Shares		0.3
Exercise of stock options	$ 14		$ 14
Exercise of stock options, Shares		0.2
Employee stock purchase plan
Employee stock purchase plan, Shares		0.1
Vesting of restricted stock and performance units
Vesting of restricted stock and performance units, Shares		0.5
Employee restricted stock units surrendered in lieu of income tax withholding	$ (20)		$ (20)
Employee restricted stock units surrendered in lieu of income tax withholding, Shares		(0.2)
Stock-based compensation expense	6		6
Treasury stock purchased	(198)			(198)
Treasury stock purchased, Shares		(1.7)
Ending Balance at Mar. 25, 2016	$ 4,451	$ 1	$ 6,083	$ (7,049)	$ 5,901	$ (558)	$ 73
Ending Balance, Shares at Mar. 25, 2016		77.3

Condensed Consolidated Stateme8

Condensed Consolidated Statements of Equity (Parenthetical) - $ / shares	3 Months Ended
	Mar. 25, 2016	Mar. 27, 2015
Class of Stock [Line Items]
Cash dividends declared per share	$ 0.70	$ 0.65
Retained Earnings [Member]
Class of Stock [Line Items]
Cash dividends declared per share	$ 0.70	$ 0.65

Condensed Consolidated Stateme9

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 25, 2016	Mar. 27, 2015
Operating activities:
Net income	$ 230	$ 109
Less: Income from discontinued operations, net of tax	(63)	(4)
Income from continuing operations	167	105
Depreciation of property, plant and equipment	40	42
Amortization of intangibles and other assets	10	10
Deferred income tax provision	12	10
Stock-based employee compensation expense	6	13
Contributions to employee savings plans in L-3 Holdings' common stock	30	26
Amortization of pension and postretirement benefit plans net loss and prior service cost	12	17
Amortization of bond discounts and deferred debt issue costs (included in interest expense)	$ 2	2
Loss related to business divestiture		22
Other non-cash items	$ 1	(6)
Changes in operating assets and liabilities, excluding amounts from acquisitions and divestitures, and discontinued operations:
Billed receivables	(32)	23
Contracts in process	(148)	(147)
Inventories	(19)	$ (31)
Other assets	4
Accounts payable, trade	115	$ 98
Accrued employment costs	(46)	(8)
Accrued expenses	16	(56)
Advance payments and billings in excess of costs incurred	(64)	(19)
Income taxes	20	27
Other current liabilities	(6)	4
Pension and postretirement benefits	(1)	4
All other operating activities	(7)	(24)
Net cash from operating activities from continuing operations	112	112
Investing activities:
Business acquisitions, net of cash acquired	(27)	$ (41)
Proceeds from the sale of businesses, net of closing date cash balances	576
Capital expenditures	(35)	$ (40)
Dispositions of property, plant and equipment	7	1
Other investing activities	9	6
Net cash from (used in) investing activities from continuing operations	530	(74)
Financing activities:
Borrowings under revolving credit facility	217	108
Repayment of borrowings under revolving credit facility	(217)	(108)
Common stock repurchased	(198)	(100)
Dividends paid on L-3 Holdings' common stock	(58)	(58)
Proceeds from exercises of stock options	14	37
Proceeds from employee stock purchase plan	8	9
Employee restricted stock units surrendered in lieu of income tax withholding	(20)	(33)
Other financing activities	(5)	(5)
Net cash used in financing activities from continuing operations	$ (259)	(150)
Effect of foreign currency exchange rate changes on cash and cash equivalents		(11)
Cash used in discontinued operations:
Operating activities	$ (56)	(2)
Investing activities		(1)
Cash used in discontinued operations	$ (56)	(3)
Change in cash balance in assets held for sale		1
Net increase (decrease) in cash and cash equivalents	$ 327	(125)
Cash and cash equivalents, beginning of the period	207	442
Cash and cash equivalents, end of the period	$ 534	$ 317

Description of Business

Description of Business	3 Months Ended
	Mar. 25, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description of Business	1. Description of Business L-3 Communications Holdings, Inc. derives all of its operating income and cash flows from its wholly-owned subsidiary, L-3 Communications Corporation (L-3 Communications). L-3 Communications Holdings, Inc. (L-3 Holdings and, together with its subsidiaries, referred to herein as L-3 or the Company) is a prime contractor in Intelligence, Surveillance and Reconnaissance (ISR) systems, aircraft sustainment (including modifications, logistics and maintenance), simulation and training, night vision and image intensification equipment, and security and detection systems. L-3 is also a leading provider of a broad range of communication and electronic systems and products used on military and commercial platforms. The Company’s customers include the United States (U.S.) Department of Defense (DoD) and its prime contractors, U.S. Government intelligence agencies, the U.S. Department of Homeland Security (DHS), foreign governments, and domestic and international commercial customers. On December 7, 2015, the Company entered into a definitive agreement to sell its National Security Solutions (NSS) business to CACI International Inc. The transaction was completed on February 1, 2016. NSS provides cybersecurity solutions, high-performance computing, enterprise IT services, analytics and intelligence analysis to the DoD, U.S. Government intelligence agencies, federal civilian agencies and foreign governments. In accordance with Accounting Standards Update (ASU) 2014-08, Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity The Company has the following three reportable segments: (1) Electronic Systems, (2) Aerospace Systems and (3) Communication Systems. Electronic Systems provides a broad range of components, products, subsystems, systems, and related services for military and commercial customers in several niche markets across several business areas. These business areas include precision engagement & training, sensor systems, power & propulsion systems, aviation products & security systems, warrior systems and advanced programs. Aerospace Systems delivers integrated solutions for the global ISR market and provides modernization, upgrade, sustainment, and maintenance and logistics support for a wide variety of aircraft and ground systems. Communication Systems delivers products and services for the global communications market, specializing in strategic and tactical airborne, space, ground and sea-based communication systems. Financial information with respect to the Company’s segments is included in Note 22 to the unaudited condensed consolidated financial statements and in Note 21 to the audited consolidated financial statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2015.

Basis of Presentation

Basis of Presentation	3 Months Ended
	Mar. 25, 2016
Accounting Policies [Abstract]
Basis of Presentation	2. Basis of Presentation These unaudited condensed consolidated financial statements for the quarterly period ended March 25, 2016 should be read in conjunction with the audited consolidated financial statements of L-3 Holdings and L-3 Communications included in their Annual Report on Form 10-K for the year ended December 31, 2015. Principles of Consolidation and Reporting The accompanying financial statements comprise the consolidated financial statements of L-3 Holdings and L-3 Communications. L-3 Holdings’ only asset is its investment in the common stock of L-3 Communications, its wholly-owned subsidiary, and its only obligations are: (1) its guarantee of borrowings under the Amended and Restated Revolving Credit Facility (Credit Facility) of L-3 Communications and (2) its guarantee of other contractual obligations of L-3 Communications and its subsidiaries. All issuances of and conversions into L-3 Holdings’ equity securities, including grants of stock options, restricted stock units and performance units by L-3 Holdings to employees and directors of L-3 Communications and its subsidiaries, have been reflected in the consolidated financial statements of L-3 Communications. As a result, the consolidated financial positions, results of operations and cash flows of L-3 Holdings and L-3 Communications are substantially the same. See Note 23 for additional information regarding the unaudited financial information of L-3 Communications and its subsidiaries. The unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (U.S. GAAP) for interim financial information and in accordance with the instructions to Form 10-Q and Article 10 of Regulation S-X of the Securities and Exchange Commission (SEC). Accordingly, they do not include all of the disclosures required by U.S. GAAP for a complete set of annual audited financial statements. The December 31, 2015 condensed consolidated balance sheet data was derived from audited financial statements, but does not include all disclosures required by U.S. GAAP. In the opinion of management, all adjustments (consisting of normal and recurring adjustments) considered necessary for a fair statement of the results for the interim periods presented have been included. The results of operations for the interim periods are not necessarily indicative of results for the full year. It is the Company’s established practice to close its books for the quarters ending March, June and September on the Friday preceding the end of the calendar quarter. The interim unaudited condensed consolidated financial statements included herein have been prepared and are labeled based on that convention. The Company closes its books for annual periods on December 31 regardless of what day it falls on. Certain reclassifications have been made to conform prior-year amounts to the current-year presentation. Accounting Estimates The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of sales and costs of sales during the reporting period. The most significant of these estimates and assumptions for L-3 relate to contract revenue, profit and loss recognition, fair values of assets acquired and liabilities assumed in business combinations, market values for inventories reported at lower of cost or market, pension and post-retirement benefit obligations, stock-based employee compensation expense, income taxes, including the valuation of deferred tax assets, litigation reserves and environmental obligations, accrued product warranty costs, liabilities for the voluntary return program of various EoTech holographic weapon sight products, and the recoverability, useful lives and valuation of recorded amounts of long-lived assets, identifiable intangible assets and goodwill. Changes in estimates are reflected in the periods during which they become known. Actual amounts will differ from these estimates and could differ materially. Sales and profits on contracts that are covered by accounting standards for construction-type and production-type contracts and federal government contractors are substantially recognized using percentage-of-completion (POC) methods of accounting. Approximately 49% of the Company’s net sales in 2015 were accounted for under contract accounting standards, of which approximately 41% were fixed-price type contracts and approximately 8% were cost-plus type contracts. For contracts that are accounted for under contract accounting standards, sales and profits are recognized based on: (1) a POC method of accounting (fixed-price contracts), (2) allowable costs incurred plus the estimated profit on those costs (cost-plus contracts), or (3) direct labor hours expended multiplied by the contractual fixed rate per hour plus incurred costs for material (time-and-material contracts). Sales and profits on fixed-price production contracts under which units are produced and delivered in a continuous or sequential process are recorded as units are delivered based on their contractual selling prices (the “units-of-delivery” method). Sales and profits on each fixed-price production contract under which units are not produced and delivered in a continuous or sequential process, or under which a relatively few number of units are produced, are recorded based on the ratio of actual cumulative costs incurred to total estimated costs at completion of the contract, multiplied by the total estimated contract revenue, less cumulative sales recognized in prior periods (the “cost-to-cost” method). Under both POC methods of accounting, a single estimated total profit margin is used to recognize profit for each contract over its entire period of performance, which can exceed one year. Accounting for the sales and profit on these fixed-price type contracts requires the preparation of estimates of: (1) the total contract revenue, (2) the total costs at completion, which is equal to the sum of the actual incurred costs to date on the contract and the estimated costs to complete the contract’s statement of work, and (3) the measurement of progress towards completion. The estimated profit or loss at completion on a contract is equal to the difference between the total estimated contract revenue and the total estimated cost at completion. The profit recorded on a contract in any period using either the units-of-delivery method or cost-to-cost method is equal to the current estimated total profit margin multiplied by the cumulative sales recognized, less the amount of cumulative profit previously recorded for the contract. Sales and profits on cost-plus type contracts that are covered by contract accounting standards are recognized as allowable costs are incurred on the contract, at an amount equal to the allowable costs plus the estimated profit on those costs. The estimated profit on a cost-plus type contract is fixed or variable based on the contractual fee arrangement. Incentive and award fees are the primary variable fee contractual arrangement types for the Company. Incentive and award fees on cost-plus type contracts are included as an element of total estimated contract revenues and are recorded as sales when a basis exists for the reasonable prediction of performance in relation to established contractual targets and the Company is able to make reasonably dependable estimates for them. Sales and profits on time-and-material type contracts are recognized on the basis of direct labor hours expended multiplied by the contractual fixed rate per hour, plus the actual costs of materials and other direct non-labor costs. Revisions or adjustments to estimates for a contract’s revenue, estimated costs at completion and estimated profit or loss are often required as work progresses under a contract, as experience is gained, as facts and circumstances change and as new information is obtained, even though the scope of work required under the contract may not change. Revisions or adjustments may also be required if contract modifications occur. The impact of revisions in profit (loss) estimates for all types of contracts subject to POC accounting are recognized on a cumulative catch-up basis in the period in which the revisions are made. The revisions in contract estimates, if significant, can materially affect the Company’s results of operations and cash flows, as well as reduce the valuations of receivables and inventories, and in some cases result in liabilities to complete contracts in a loss position. Aggregate net changes in contract estimates amounted to increases of $60 million, or 24% of consolidated operating income for the quarterly period ended March 25, 2016, and increases of $32 million, or 17% of consolidated operating income for the quarterly period ended March 27, 2015. As previously disclosed, during the fourth quarter of 2015, the Company commenced a voluntary return program and began accepting customer returns for various EoTech holographic weapons sight (HWS) products that may have been affected by certain performance issues. The return program gives eligible owners of such HWS products the option to return their products in exchange for a refund of the purchase price, including shipping costs. The Company initially recorded a reduction to net sales of $20 million in the Warrior Systems sector of the Electronic Systems segment in the fourth quarter of 2015, associated with establishing a product returns allowance to reflect the estimated cost of the return program. The program has now been in operation for more than four months, and as of April 22, 2016, the Company had approved refunds at a cost of approximately $21 million, with an average refund cost per unit of $507. Accordingly, with the benefit of a larger volume of actual refund transactions, the Company used a statistical analysis of the voluntary return program to estimate the number and cost of future refunds. In its statistical analysis, the Company utilized empirical models to forecast the expected emergence pattern of new refunds over time to produce a probabilistic distribution of new refund costs that reflects the existing level of estimation uncertainty. Based on this analysis, the Company expects the total cost of the voluntary return program to be approximately $35 million, and has therefore increased the product returns allowance by recording a reduction to net sales of $15 million during the first quarter of 2016. The product returns allowance was $25 million at March 25, 2016, reflects refund payments made to eligible owners during the quarter and is included in other current liabilities on the unaudited condensed consolidated balance sheets. See Note 9. The Company will continue to review the product returns allowance as the program matures and new information becomes available. The Company’s ongoing evaluation may cause it to record further adjustments to the allowance in future periods. These adjustments could be material. For a more complete discussion of these estimates and assumptions, see the Annual Report on Form 10-K for the year ended December 31, 2015.

New Accounting Standards Implem

New Accounting Standards Implemented	3 Months Ended
	Mar. 25, 2016
Accounting Changes and Error Corrections [Abstract]
New Accounting Standards Implemented	3. New Accounting Standards Implemented In March 2016, the Financial Accounting Standards Board (FASB) issued ASU 2016-09 , Improvements to Employee Share-Based Payment Accounting

Accounting Standards Issued and

Accounting Standards Issued and Not Yet Implemented	3 Months Ended
	Mar. 25, 2016
Accounting Changes and Error Corrections [Abstract]
Accounting Standards Issued and Not Yet Implemented	4. Accounting Standards Issued and Not Yet Implemented In February 2016, the FASB issued ASU 2016-02, Leases In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers Other accounting standard updates effective for interim and annual periods beginning after December 15, 2016 are not expected to have an impact on the Company’s financial position, results of operations or cash flows.

Divestitures and Acquisitions

Divestitures and Acquisitions	3 Months Ended
	Mar. 25, 2016
Business Combinations [Abstract]
Divestitures and Acquisitions	5. Divestitures and Acquisitions Discontinued Operations As discussed in Note 1, the Company entered into a definitive agreement to sell its NSS business to CACI International Inc. on December 7, 2015. The transaction was completed on February 1, 2016 for a sale price of $561 million, subject to finalization based on customary adjustments for closing date net working capital. The table below presents statement of operations data for NSS, which was previously a reportable segment and has been classified as discontinued operations and includes allocated interest expense for debt not directly attributable or related to L-3’s other operations. Interest expense was allocated in accordance with the accounting standards for discontinued operations and was based on the ratio of NSS’s net assets to the sum of: (1) total L-3 consolidated net assets and (2) L-3 consolidated total debt. First Quarter Ended March 25, 2016 March 27, 2015 (in millions) Net sales $ 86 $ 238 Cost of sales (92 ) (225 ) Gain related to business divestiture (1) 64 — Operating income from discontinued operations 58 13 Interest expense allocated to discontinued operations — (5 ) Income from discontinued operations before income taxes 58 8 Income tax benefit (expense) 5 (4 ) Income from discontinued operations, net of income taxes $ 63 $ 4 (1) The first quarter ended March 25, 2016 includes a gain of $64 million (before and after income taxes) on the sale of the NSS business. The major classes of assets and liabilities included in discontinued operations related to NSS are presented in the table below. December 31, (in millions) Assets Current assets $ 201 Property, plant and equipment, net 25 Goodwill (1) 390 Other assets 48 Total assets of discontinued operations $ 664 Liabilities Accounts payable, trade $ 48 Other current liabilities 78 Current liabilities 126 Long-term liabilities 94 Total liabilities of discontinued operations $ 220 (1) The goodwill balance at December 31, 2015 is based on an allocation of the goodwill attributable to the NSS reporting unit to discontinued operations based on the relative fair value of the NSS business retained by L-3 and NSS business sold. Business Divestitures 2015 Business Divestiture Marine Systems International (MSI) Divestiture. Business Acquisitions The business acquisitions discussed below are included in the Company’s results of operations from their respective dates of acquisition. 2016 Business Acquisition On January 22, 2016, the Company acquired the assets of Advanced Technical Materials, Inc. (ATM) for a purchase price of $27 million (subject to customary adjustments), which was financed with cash on hand. ATM develops and manufactures a broad product line of passive microwave waveguides and specialized coaxial components. The aggregate goodwill recognized for this business was $22 million, which was assigned to the Communication Systems reportable segment, all of which is expected to be deductible for income tax purposes. The final purchase price allocation, which is expected to be completed in the third quarter of 2016, will be based on final appraisals and other analysis of fair values of acquired assets and liabilities. The Company does not expect that differences between the preliminary and final purchase price allocations will have a material impact on its results of operations or financial position. 2015 Business Acquisitions ForceX, Inc. Acquisition. CTC Aviation Group Acquisition. MITEQ, Inc. Acquisition. Unaudited Pro Forma Statements of Operations Data The following unaudited pro forma Statements of Operations data present the combined results of the Company and its business acquisitions completed during the quarterly period ended March 25, 2016 and the year ended December 31, 2015, assuming that the business acquisitions completed during these periods had occurred on January 1, 2015. First Quarter Ended March 25, 2016 March 27, 2015 (in millions, except per share data) Pro forma net sales $ 2,353 $ 2,518 Pro forma income from continuing operations 167 108 Pro forma net income attributable to L-3 227 108 Pro forma diluted earnings per share from continuing operations 2.08 1.24 Pro forma diluted earnings per share 2.87 1.29 The unaudited pro forma results disclosed in the table above are based on various assumptions and are not necessarily indicative of the results of operations that would have occurred had the Company completed these acquisitions on January 1, 2015.

Contracts in Process

Contracts in Process	3 Months Ended
	Mar. 25, 2016
Text Block [Abstract]
Contracts in Process	6. Contracts in Process The components of contracts in process are presented in the table below. March 25, December 31, (in millions) Unbilled contract receivables, gross $ 2,243 $ 2,097 Unliquidated progress payments (977 ) (869 ) Unbilled contract receivables, net 1,266 1,228 Inventoried contract costs, gross 1,097 975 Unliquidated progress payments (137 ) (122 ) Inventoried contract costs, net 960 853 Total contracts in process $ 2,226 $ 2,081 Inventoried Contract Costs. The table below presents a summary of G&A, IRAD and B&P costs included in inventoried contract costs and the changes to them, including amounts charged to cost of sales by the Company’s U.S. Government contractor businesses for the periods presented. First Quarter Ended March 25, March 27, (in millions) Amounts included in inventoried contract costs at beginning of the period $ 137 $ 117 Contract costs incurred: IRAD and B&P 65 63 Other G&A 194 195 Total 259 258 Amounts charged to cost of sales (239 ) (247 ) Amounts included in inventoried contract costs at end of the period $ 157 $ 128 The table below presents a summary of selling, general and administrative expenses and research and development expenses for the Company’s commercial businesses, which are expensed as incurred and included in cost of sales on the unaudited condensed consolidated statements of operations. First Quarter Ended March 25, March 27, (in millions) Selling, general and administrative expenses $ 52 $ 70 Research and development expenses 11 12 Total $ 63 $ 82

Inventories

Inventories	3 Months Ended
	Mar. 25, 2016
Inventory Disclosure [Abstract]
Inventories	7. Inventories Inventories at Lower of Cost or Market. March 25, December 31, (in millions) Raw materials, components and sub-assemblies $ 174 $ 164 Work in process 101 103 Finished goods 76 66 Total $ 351 $ 333

Goodwill and Identifiable Intan

Goodwill and Identifiable Intangible Assets	3 Months Ended
	Mar. 25, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Identifiable Intangible Assets	8. Goodwill and Identifiable Intangible Assets Goodwill. Electronic Aerospace Communication Consolidated (in millions) Goodwill $ 3,994 $ 1,691 $ 1,038 $ 6,723 Accumulated impairment losses (69 ) (338 ) (35 ) (442 ) Balance at December 31, 2015 3,925 1,353 1,003 6,281 Business acquisitions (1) — — 22 22 Foreign currency translation adjustments (2) (7 ) 10 — 3 Balance at March 25, 2016 $ 3,918 $ 1,363 $ 1,025 $ 6,306 Goodwill $ 3,987 $ 1,701 $ 1,060 $ 6,748 Accumulated impairment losses (69 ) (338 ) (35 ) (442 ) $ 3,918 $ 1,363 $ 1,025 $ 6,306 (1) The increase in goodwill for the Communication Systems segment was due to the ATM business acquisition. (2) The decrease in goodwill presented in the Electronic Systems segment was due to the strengthening of the U.S. dollar against the British pound, primarily offset by the weakening of the U.S. dollar against the Canadian dollar and the Euro. The increase in goodwill presented in the Aerospace Systems segment was due to the weakening of the U.S. dollar against the Canadian dollar. Identifiable Intangible Assets. Identifiable Intangible Assets. March 25, 2016 December 31, 2015 Weighted Gross Accumulated Net Gross Accumulated Net (in years) (in millions) Customer contractual relationships 16 $ 372 $ 251 $ 121 $ 370 $ 246 $ 124 Technology 11 158 94 64 156 91 65 Other 18 21 11 10 21 11 10 Total 15 $ 551 $ 356 $ 195 $ 547 $ 348 $ 199 The table below presents amortization expense recorded by the Company for its identifiable intangible assets. First Quarter Ended March 25, March 27, (in millions) Amortization Expense $ 8 $ 9 Based on gross carrying amounts at March 25, 2016, the Company’s estimate of amortization expense for identifiable intangible assets for the years ending December 31, 2016 through 2020 is presented in the table below. Year Ending December 31, 2016 2017 2018 2019 2020 (in millions) Estimated amortization expense $ 33 $ 31 $ 27 $ 24 $ 21

Other Current Liabilities and O

Other Current Liabilities and Other Liabilities	3 Months Ended
	Mar. 25, 2016
Text Block [Abstract]
Other Current Liabilities and Other Liabilities	9. Other Current Liabilities and Other Liabilities The table below presents the components of other current liabilities. March 25, December 31, (in millions) Other Current Liabilities: Estimated costs in excess of estimated contract value to complete contracts in process in a loss position $ 76 $ 82 Accrued product warranty costs 66 70 Accrued interest 48 45 Deferred revenues 33 32 Product returns allowance (see Note 2) 25 20 Accruals for pending and threatened litigation (see Note 18) 1 6 Other 154 139 Total other current liabilities $ 403 $ 394 The table below presents the components of other liabilities. March 25, December 31, (in millions) Other Liabilities: Non-current income taxes payable (see Note 11) $ 161 $ 161 Deferred compensation 49 45 Accrued workers’ compensation 37 38 Accrued product warranty costs 37 35 Notes payable and capital lease obligations 10 10 Other 77 79 Total other liabilities $ 371 $ 368 The table below presents the changes in the Company’s accrued product warranty costs. First Quarter Ended March 25, March 27, (in millions) Accrued product warranty costs: (1) Balance at January 1 $ 105 $ 93 Acquisitions during the period — 1 Accruals for product warranties issued during the period 9 17 Settlements made during the period (11 ) (17 ) Balance at end of period $ 103 $ 94 (1) Warranty obligations incurred in connection with long-term production contracts that are accounted for under the POC cost-to-cost method are included within the contract estimates at completion and are excluded from the above amounts. The balances above include both the current and non-current amounts.

Debt

Debt	3 Months Ended
	Mar. 25, 2016
Debt Disclosure [Abstract]
Debt	10. Debt The components of debt and a reconciliation to the carrying amount of current and long-term debt are presented in the table below. March 25, December 31, (in millions) L-3 Communications: Borrowings under Amended and Restated Revolving Credit Facility (1) $ — $ — 3.95% Senior Notes due 2016 500 500 1.50% Senior Notes due 2017 350 350 5.20% Senior Notes due 2019 1,000 1,000 4.75% Senior Notes due 2020 800 800 4.95% Senior Notes due 2021 650 650 3.95% Senior Notes due 2024 350 350 Principal amount of long-term debt 3,650 3,650 Unamortized discounts (7 ) (8 ) Deferred debt issue costs (17 ) (18 ) Carrying amount of long-term debt 3,626 3,624 Current portion of long-term debt (499 ) (499 ) Carrying amount of long-term debt, excluding current portion $ 3,127 $ 3,125 (1) During the quarterly period ended March 25, 2016, L-3 Communications’ aggregate borrowings and repayments under the Credit Facility were each $217 million. At March 25, 2016, L-3 Communications had the full availability of its $1 billion Credit Facility, which expires on February 3, 2017. On March 24, 2016, the Company initiated a redemption of $300 million aggregate principal amount of its 3.95% Senior Notes due in 2016 (the 2016 Notes). The 2016 Notes will be redeemed on May 20, 2016 (the Redemption Date), at a redemption price equal to the greater of: (1) 100% of the aggregate principal amount, or (2) the present value of the remaining principal and interest payments discounted to the date of redemption, on a semi-annual basis, at the treasury rate (as defined in the indenture governing the 2016 Notes), plus a spread of 50 basis points. In April 2015, the FASB issued ASU 2015-03 which requires that debt issuance costs be presented in the balance sheet as a direct deduction from the carrying amount of the associated debt liability. The Company has adopted this standard during the quarterly period ended March 25, 2016.

Income Taxes

Income Taxes	3 Months Ended
	Mar. 25, 2016
Income Tax Disclosure [Abstract]
Income Taxes	11. Income Taxes The Company and its subsidiaries file income tax returns in the U.S. Federal jurisdiction, which is the Company’s primary tax jurisdiction, and various state and foreign jurisdictions. As of March 25, 2016, the statutes of limitations for the Company’s U.S. Federal income tax returns for the years ended December 31, 2010 through 2014 were open. The U.S. Internal Revenue Service (IRS) commenced an audit of the Company’s U.S. Federal income tax return for 2012. The Company cannot predict the outcome of the audit at this time. The effective income tax rate for the quarterly period ended March 25, 2016 decreased to 22.3% from 30.5% for the quarterly period ended March 27, 2015. The decrease was primarily due to: (1) the early adoption of a new accounting standard related to tax benefits from employee stock based compensation awards, which resulted in a $10 million reduction to income tax expense (see Note 3) and (2) a benefit from the reinstatement of the Federal Research and Experimentation (R&E) tax credit. As of March 25, 2016, the Company anticipates that unrecognized tax benefits will decrease by approximately $6 million over the next 12 months due to the potential resolution of unrecognized tax benefits involving several jurisdictions and tax periods. The actual amount of the decrease over the next 12 months could vary significantly depending on the ultimate timing and nature of any settlements. Current and non-current income taxes payable include accrued potential interest of $19 million ($11 million after income taxes) at March 25, 2016 and $18 million ($11 million after income taxes) at December 31, 2015, and potential penalties of $8 million at March 25, 2016 and $9 million at December 31, 2015.

Accumulated Other Comprehensive

Accumulated Other Comprehensive (Loss) Income (AOCI)	3 Months Ended
	Mar. 25, 2016
Equity [Abstract]
Accumulated Other Comprehensive (Loss) Income (AOCI)	12. Accumulated Other Comprehensive (Loss) Income (AOCI) The changes in the AOCI balances, including amounts reclassified from AOCI into net income, are presented in the table below. Foreign Unrealized Unrecognized prior service Total (in millions) Balance at December 31, 2015 $ (101 ) $ (8 ) $ (465 ) $ (574 ) Other comprehensive income before reclassifications, net of tax 1 6 — 7 Amounts reclassified from AOCI, net of tax — 1 8 9 Net current period other comprehensive income 1 7 8 16 Balance at March 25, 2016 $ (100 ) $ (1 ) $ (457 ) $ (558 ) Balance at December 31, 2014 $ 19 $ (5 ) $ (598 ) $ (584 ) Other comprehensive loss before reclassifications, net of tax (87 ) (5 ) — (92 ) Amounts reclassified from AOCI, net of tax — 2 11 13 Net current period other comprehensive (loss) income (87 ) (3 ) 11 (79 ) Balance at March 27, 2015 $ (68 ) $ (8 ) $ (587 ) $ (663 ) Further details regarding the amounts reclassified from AOCI into net income are presented in the table below. Amount Reclassified from AOCI (a) First Quarter Ended Details About AOCI Components March 25, March 27, (in millions) Loss on hedging instruments $ (3 ) $ (2 ) Cost of sales-products (3 ) (2 ) Income from continuing operations before income taxes 2 — Provision for income taxes $ (1 ) $ (2 ) Income from continuing operations Amortization of defined benefit pension items: Net loss $ (12 ) $ (17 ) (b) (12 ) (17 ) Income from continuing operations before income taxes 4 6 Provision for income taxes $ (8 ) $ (11 ) Income from continuing operations Total reclassification for the period $ (9 ) $ (13 ) Income from continuing operations (a) Amounts in parenthesis indicate charges to the unaudited condensed consolidated statements of operations. (b) Amounts related to pension and postretirement benefit plans were reclassified from AOCI and recorded as a component of net periodic benefit cost (see Note 19 for additional information).

Equity

Equity	3 Months Ended
	Mar. 25, 2016
Equity [Abstract]
Equity	13. Equity On December 4, 2014, L-3 Holdings’ Board of Directors approved a share repurchase program that authorizes L-3 Holdings to repurchase up to $1.5 billion of its common stock through June 30, 2017. Repurchases of L-3 Holdings’ common stock are made from time to time at management’s discretion in accordance with applicable U.S. Federal securities laws. The timing and actual number of shares to be repurchased in the future will depend on a variety of factors, including, but not limited to, the Company’s financial position, earnings, legal requirements, other investment opportunities (including acquisitions) and market conditions. L-3 Holdings repurchased 1,708,185 shares of its common stock at an average price of $115.80 per share for an aggregate amount of $198 million from January 1, 2016 through March 25, 2016. All share repurchases of L-3 Holdings’ common stock have been recorded as treasury shares. At March 25, 2016, the remaining dollar value of authorization under the December 4, 2014 share repurchase program was $608 million. From March 26, 2016 through April 22, 2016, L-3 Holdings repurchased 467,854 shares of its common stock at an average price of $119.36 per share for an aggregate amount of $56 million. On February 9, 2016, L-3 Holdings’ Board of Directors declared a cash dividend of $0.70 per share, paid on March 15, 2016 to shareholders of record at the close of business on March 1, 2016. During the quarterly period ended March 25, 2016, the Company paid $58 million of cash dividends, including $4 million of previously accrued dividends for employee held stock awards.

L-3 Holdings' Earnings Per Comm

L-3 Holdings' Earnings Per Common Share	3 Months Ended
	Mar. 25, 2016
Earnings Per Share [Abstract]
L-3 Holdings' Earnings Per Common Share	14. L-3 Holdings’ Earnings Per Common Share A reconciliation of basic and diluted earnings per share (EPS) is presented in the table below. First Quarter Ended March 25, March 27, (in millions, except per Reconciliation of net income: Net income $ 230 $ 109 Net income from continuing operations attributable to noncontrolling interests (3 ) (4 ) Net income attributable to L-3 Holdings’ common shareholders $ 227 $ 105 Earnings attributable to L-3 Holdings’ common shareholders: Continuing operations $ 164 $ 101 Discontinued operations, net of income tax 63 4 Net income attributable to L-3 Holdings’ common shareholders $ 227 $ 105 Earnings per share attributable to L-3 Holdings’ common shareholders: Basic: Weighted average common shares outstanding 77.8 82.3 Basic earnings per share: Continuing operations $ 2.11 $ 1.23 Discontinued operations, net of income tax 0.81 0.05 Net income $ 2.92 $ 1.28 Diluted: Common and potential common shares: Weighted average common shares outstanding 77.8 82.3 Assumed exercise of stock options 2.0 2.9 Unvested restricted stock awards 1.1 1.4 Employee stock purchase plan contributions 0.1 0.1 Performance unit awards 0.1 0.2 Assumed purchase of common shares for treasury (2.1 ) (3.1 ) Common and potential common shares 79.0 83.8 Diluted earnings per share: Continuing operations $ 2.08 $ 1.20 Discontinued operations, net of income tax 0.79 0.05 Net income $ 2.87 $ 1.25 The computation of diluted EPS excludes shares for stock options, restricted stock awards and performance unit awards of 1.2 million for the quarterly period ended March 25, 2016 and shares for stock options of 0.2 million for the quarterly period ended March 27, 2015, as they were anti-dilutive.

Fair Value Measurements

Fair Value Measurements	3 Months Ended
	Mar. 25, 2016
Fair Value Disclosures [Abstract]
Fair Value Measurements	15. Fair Value Measurements L-3 applies the accounting standards for fair value measurements to all of the Company’s assets and liabilities that are measured and recorded at fair value. Fair value is defined as the price that would be received for an asset or the exit price that would be paid to transfer a liability in the principal or most advantageous market in an orderly transaction between market participants. The standards establish a fair value hierarchy that gives the highest priority to observable inputs and the lowest priority to unobservable inputs. The following table presents the fair value hierarchy level for each of the Company’s assets and liabilities that are measured and recorded at fair value on a recurring basis. March 25, 2016 December 31, 2015 Description Level 1 (1) Level 2 (2) Level 3 (3) Level 1 (1) Level 2 (2) Level 3 (3) (in millions) Assets Cash equivalents $ 329 $ — $ — $ 187 $ — $ — Derivatives (foreign currency forward contracts) — 7 — — 2 — Total assets $ 329 $ 7 $ — $ 187 $ 2 $ — Liabilities Derivatives (foreign currency forward contracts) $ — $ 11 $ — $ — $ 16 $ — (1) Level 1 is based on quoted market prices available in active markets for identical assets or liabilities as of the reporting date. Cash equivalents are primarily held in registered money market funds, which are valued using quoted market prices. (2) Level 2 is based on pricing inputs other than quoted prices in active markets, which are either directly or indirectly observable. The fair value is determined using a valuation model based on observable market inputs, including quoted foreign currency forward exchange rates and consideration of non-performance risk. (3) Level 3 is based on pricing inputs that are not observable and not corroborated by market data. The Company has no Level 3 assets or liabilities.

Financial Instruments

Financial Instruments	3 Months Ended
	Mar. 25, 2016
Investments, All Other Investments [Abstract]
Financial Instruments	16. Financial Instruments At March 25, 2016 and December 31, 2015, the Company’s financial instruments consisted primarily of cash and cash equivalents, billed receivables, trade accounts payable, Senior Notes and foreign currency forward contracts. The carrying amounts of cash and cash equivalents, billed receivables and trade accounts payable are representative of their respective fair values because of the short-term maturities or the expected settlement dates of these instruments. The carrying amounts and estimated fair values of the Company’s other financial instruments are presented in the table below. March 25, 2016 December 31, 2015 Carrying Estimated Carrying Estimated (in millions) Senior Notes (1) $ 3,626 $ 3,745 $ 3,624 $ 3,754 Foreign currency forward contracts (2) (4 ) (4 ) (14 ) (14 ) (1) The Company measures the fair value of its Senior Notes using Level 2 inputs based primarily on current market yields for its existing debt traded in the secondary market. (2) The Company measures the fair values of foreign currency forward contracts based on forward exchange rates. See Note 17 for additional disclosures regarding the notional amounts and fair values of foreign currency forward contracts.

Derivative Financial Instrument

Derivative Financial Instruments	3 Months Ended
	Mar. 25, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments	17. Derivative Financial Instruments The Company’s derivative financial instruments include foreign currency forward contracts, which are entered into for risk management purposes. Foreign Currency Forward Contracts. Currency Notional Amounts (in millions) Canadian dollar $ 183 U.S. dollar 90 Euro 36 British pound 7 Total $ 316 At March 25, 2016, the Company’s foreign currency forward contracts had maturities through 2020. The table below presents the location of the Company’s derivative instruments recorded at fair value on the condensed consolidated balance sheets. March 25, 2016 December 31, 2015 Other Other Other Other Other Other Other Other (in millions) Derivatives designated as hedging instruments: Foreign currency forward contracts (1) $ 3 $ 4 $ 10 $ 1 $ 1 $ 1 $ 15 $ 1 Total derivative instruments $ 3 $ 4 $ 10 $ 1 $ 1 $ 1 $ 15 $ 1 (1) See Note 15 for a description of the fair value hierarchy related to the Company’s foreign currency forward contracts. The effects from foreign currency forward contracts on the unaudited condensed consolidated statements of operations were pre-tax losses of $3 million and $2 million for the quarterly periods ended March 25, 2016 and March 27, 2015, respectively. At March 25, 2016, the estimated net amount of existing losses that are expected to be reclassified into income within the next 12 months is $7 million.

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 25, 2016
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	18. Commitments and Contingencies Procurement Regulations A substantial majority of the Company’s revenues are generated from providing products and services under legally binding agreements or contracts with the U.S. Government, foreign government customers and state and local governments. U.S. Government contracts are subject to extensive legal and regulatory requirements, and, from time to time, agencies of the U.S. Government investigate whether such contracts were and are being conducted in accordance with these requirements. The Company is currently cooperating with the U.S. Government on several investigations from which civil, criminal or administrative proceedings have or could result and give rise to fines, penalties, compensatory and treble damages, restitution and/or forfeitures, including investigations into the pricing of certain contracts entered into by the Communication Systems segment. The Company does not currently anticipate that any of these investigations will have a material adverse effect, individually or in the aggregate, on its consolidated financial position, results of operations or cash flows. However, under U.S. Government regulations, an indictment of the Company by a federal grand jury, or an administrative finding against the Company as to its present responsibility to be a U.S. Government contractor or subcontractor, could result in the Company being suspended for a period of time from eligibility for awards of new government contracts or task orders or in a loss of export privileges. A conviction, or an administrative finding against the Company that satisfies the requisite level of seriousness, could result in debarment from contracting with the federal government for a specified term. In addition, all of the Company’s U.S. Government contracts: (1) are subject to audit and various pricing and cost controls, (2) include standard provisions for termination for the convenience of the U.S. Government or for default, and (3) are subject to cancellation if funds for contracts become unavailable. Foreign government contracts generally include comparable provisions relating to terminations for convenience or default, as well as other procurement clauses relevant to the foreign government. Litigation Matters The Company is also subject to litigation, proceedings, claims or assessments and various contingent liabilities incidental to its businesses, including those specified below. Furthermore, in connection with certain business acquisitions, the Company has assumed some or all claims against, and liabilities of, such acquired businesses, including both asserted and unasserted claims and liabilities. In accordance with the accounting standard for contingencies, the Company records a liability when management believes that it is both probable that a liability has been incurred and the Company can reasonably estimate the amount of the loss. Generally, the loss is recorded at the amount the Company expects to resolve the liability. The estimated amounts of liabilities recorded for pending and threatened litigation are disclosed in Note 9. Amounts recoverable from insurance contracts or third parties are recorded as assets when deemed probable. At March 25, 2016, the Company did not record any amounts for recoveries from insurance contracts or third parties in connection with the amount of liabilities recorded for pending and threatened litigation. Legal defense costs are expensed as incurred. The Company believes it has recorded adequate provisions for its litigation matters. The Company reviews these provisions to reflect the impact of negotiations, settlements, rulings, advice of legal counsel and other information and events pertaining to a particular matter. While it is reasonably possible that an unfavorable outcome may occur in one or more of the following matters, unless otherwise stated below, the Company believes that it is not probable that a loss has been incurred in any of these matters. With respect to the litigation matters below for which it is reasonably possible that an unfavorable outcome may occur, an estimate of loss or range of loss is disclosed when such amount or amounts can be reasonably estimated. Although the Company believes that it has valid defenses with respect to legal matters and investigations pending against it, the results of litigation can be difficult to predict, particularly those involving jury trials. Accordingly, the Company’s current judgment as to the likelihood of loss (or our current estimate as to the potential range of loss, if any) with respect to any particular litigation matter may turn out to be wrong. Therefore, it is possible that one or more of the following or other contingencies could have a material impact on the financial position, results of operations or cash flows of the Company in future periods. EoTech Class Actions. Securities Class Action. Government Inquiries Bashkirian Airways. HVC Alkmaar

Pension and Other Postretiremen

Pension and Other Postretirement Benefits	3 Months Ended
	Mar. 25, 2016
Compensation and Retirement Disclosure [Abstract]
Pension and Other Postretirement Benefits	19. Pension and Other Postretirement Benefits The following table summarizes the components of net periodic benefit cost for the Company’s pension and other postretirement benefit plans. Pension Plans Postretirement Benefit Plans First Quarter Ended First Quarter Ended March 25, March 27, March 25, March 27, (in millions) Components of net periodic benefit cost: Service cost $ 27 $ 32 $ 1 $ 1 Interest cost 35 37 1 2 Expected return on plan assets (51 ) (52 ) (1 ) (1 ) Amortization of prior service costs (credits) — 1 (1 ) (1 ) Amortization of net loss 13 17 — — Net periodic benefit cost $ 24 $ 35 $ — $ 1 Contributions.

Stock-Based Compensation

Stock-Based Compensation	3 Months Ended
	Mar. 25, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-Based Compensation	20. Stock-Based Compensation During the quarterly period ended March 25, 2016, the Company granted stock-based compensation under its Amended and Restated 2008 Long Term Performance Plan (2008 LTPP) in the form of stock options, restricted stock units and performance units. The stock-based compensation awards granted during the quarterly period ended March 25, 2016 are further discussed below. Stock Options. Expected holding period (in years) 5.0 Expected volatility 21.3 % Expected dividend yield 2.8 % Risk-free interest rate 1.1 % Restricted Stock Units. Performance Units. Award Modifications

Supplemental Cash Flow Informat

Supplemental Cash Flow Information	3 Months Ended
	Mar. 25, 2016
Supplemental Cash Flow Elements [Abstract]
Supplemental Cash Flow Information	21. Supplemental Cash Flow Information First Quarter Ended March 25, March 27, (in millions) Interest paid on outstanding debt $ 36 $ 37 Income tax payments 12 10 Income tax refunds 1 1

Segment Information

Segment Information	3 Months Ended
	Mar. 25, 2016
Segment Reporting [Abstract]
Segment Information	22. Segment Information The Company has three reportable segments, which are described in Note 1. The Company evaluates the performance of its operating segments and reportable segments based on their sales, operating income and operating margin. Corporate expenses are allocated to the Company’s operating segments using an allocation methodology prescribed by U.S. Government regulations for government contractors. Accordingly, segment results include all costs and expenses, except for goodwill impairment charges, gains or losses related to business divestitures, and certain other items that are excluded by management for purposes of evaluating the operating performance of the Company’s business segments. Certain Corporate expenses of $4 million for the quarterly period ended March 27, 2015, that had previously been allocated to the NSS business were retained by the Company and were allocated to L-3’s three reportable segments. The tables below present net sales, operating income, depreciation and amortization and total assets by reportable segment. First Quarter Ended March 25, March 27, (in millions) Net Sales: Electronic Systems $ 903 $ 1,046 Aerospace Systems 1,007 1,027 Communication Systems 477 455 Elimination of intercompany sales (34 ) (40 ) Consolidated total $ 2,353 $ 2,488 Operating Income: Electronic Systems $ 95 $ 113 Aerospace Systems 106 60 Communication Systems 51 36 Segment total 252 209 Loss related to business divestiture (1) — (22 ) Consolidated total $ 252 $ 187 Depreciation and amortization: Electronic Systems $ 25 $ 28 Aerospace Systems 13 12 Communication Systems 12 12 Consolidated total $ 50 $ 52 (1) See Note 5 for information regarding the Company’s business divestiture. March 25, December 31, (in millions) Total Assets: Electronic Systems $ 6,533 $ 6,426 Aerospace Systems 2,769 2,630 Communication Systems 2,064 1,984 Corporate 545 363 Assets of discontinued operations — 664 Consolidated total $ 11,911 $ 12,067

Condensed Combining Financial I

Condensed Combining Financial Information of L-3 Communications and Its Subsidiaries	3 Months Ended
	Mar. 25, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Condensed Combining Financial Information of L-3 Communications and Its Subsidiaries	23. Condensed Combining Financial Information of L-3 Communications and Its Subsidiaries L-3 Communications is a 100% owned subsidiary of L-3 Holdings. The debt of L-3 Communications, including the Senior Notes and borrowings under amounts drawn against the Credit Facility are guaranteed, on a joint and several, full and unconditional basis, by certain of its domestic subsidiaries (the “Guarantor Subsidiaries”) and, in the case of the Credit Facility, by L-3 Holdings. See Note 9 to the audited consolidated financial statements for the year ended December 31, 2015, included in the Company’s Annual Report on Form 10-K for additional information. The foreign subsidiaries and certain domestic subsidiaries of L-3 Communications (the “Non-Guarantor Subsidiaries”) do not guarantee the debt of L-3 Communications or L-3 Holdings. None of the debt of L-3 Communications has been issued by its subsidiaries. There are no restrictions on the payment of dividends from the Guarantor Subsidiaries to L-3 Communications or from L-3 Communications to L-3 Holdings. Under the terms of the indentures governing the Senior Notes, the guarantees of the Senior Notes will automatically and unconditionally be released and discharged: (1) upon the release of all guarantees of all other outstanding indebtedness of L-3 Communications Corporation, or (2) upon the determination that such guarantor is no longer a “domestic subsidiary.” In addition, the guarantees of the Senior Notes will be automatically and unconditionally released and discharged in the event of a sale or other disposition of all of the assets of any guarantor, by way of merger, consolidation or otherwise, or a sale of all of the capital stock of such guarantor. The following unaudited condensed combining financial information presents the results of operations, financial position and cash flows of: (1) L-3 Holdings, excluding L-3 Communications and its consolidated subsidiaries (the Parent), (2) L-3 Communications, excluding its consolidated subsidiaries, (3) the Guarantor Subsidiaries, (4) the Non-Guarantor Subsidiaries, and (5) the eliminations to arrive at the information for L-3 on a consolidated basis. L-3 L-3 Guarantor Non- Eliminations Consolidated (in millions) Condensed Combining Balance Sheets: At March 25, 2016: Current assets: Cash and cash equivalents $ — $ 349 $ 3 $ 189 $ (7 ) $ 534 Billed receivables, net — 276 256 247 — 779 Contracts in process — 925 1,030 271 — 2,226 Other current assets — 279 134 111 — 524 Total current assets — 1,829 1,423 818 (7 ) 4,063 Goodwill — 2,339 2,974 993 — 6,306 Other assets — 784 500 258 — 1,542 Investment in and amounts due from consolidated subsidiaries 4,378 5,393 4,312 — (14,083 ) — Total assets $ 4,378 $ 10,345 $ 9,209 $ 2,069 $ (14,090 ) $ 11,911 Current portion of long-term debt $ — $ 499 $ — $ — $ — $ 499 Current liabilities — 913 818 456 (7 ) 2,180 Amounts due to consolidated subsidiaries — — — 247 (247 ) — Other long-term liabilities — 1,428 195 31 — 1,654 Long-term debt — 3,127 — — — 3,127 Total liabilities — 5,967 1,013 734 (254 ) 7,460 L-3 shareholders’ equity 4,378 4,378 8,196 1,335 (13,909 ) 4,378 Noncontrolling interests — — — — 73 73 Total equity 4,378 4,378 8,196 1,335 (13,836 ) 4,451 Total liabilities and equity $ 4,378 $ 10,345 $ 9,209 $ 2,069 $ (14,090 ) $ 11,911 At December 31, 2015: Current assets: Cash and cash equivalents $ — $ 137 $ — $ 165 $ (95 ) $ 207 Billed receivables, net — 278 297 171 — 746 Contracts in process — 872 958 251 — 2,081 Other current assets — 288 137 109 — 534 Assets of discontinued operations — — 664 — — 664 Total current assets — 1,575 2,056 696 (95 ) 4,232 Goodwill — 2,318 2,973 990 — 6,281 Other assets — 798 496 260 — 1,554 Investment in and amounts due from consolidated subsidiaries 4,355 5,609 3,739 111 (13,814 ) — Total assets $ 4,355 $ 10,300 $ 9,264 $ 2,057 $ (13,909 ) $ 12,067 Current portion of long-term debt $ — $ 499 $ — $ — $ — $ 499 Current liabilities — 911 899 445 (95 ) 2,160 Liabilities of discontinued operations — — 220 — — 220 Other long-term liabilities — 1,410 195 29 — 1,634 Long-term debt — 3,125 — — — 3,125 Total liabilities — 5,945 1,314 474 (95 ) 7,638 L-3 shareholders’ equity 4,355 4,355 7,950 1,583 (13,888 ) 4,355 Noncontrolling interests — — — — 74 74 Total equity 4,355 4,355 7,950 1,583 (13,814 ) 4,429 Total liabilities and equity $ 4,355 $ 10,300 $ 9,264 $ 2,057 $ (13,909 ) $ 12,067 Condensed Combining Statements of Operations: For the quarter ended March 25, 2016: Total net sales $ — $ 822 $ 1,185 $ 409 $ (63 ) $ 2,353 Total cost of sales (6 ) (739 ) (1,068 ) (357 ) 69 (2,101 ) Operating (loss) income (6 ) 83 117 52 6 252 Interest expense — (41 ) — — — (41 ) Interest and other income, net — 3 — 1 — 4 (Loss) income from continuing operations before income taxes (6 ) 45 117 53 6 215 Benefit (provision) for income taxes 1 (10 ) (26 ) (12 ) (1 ) (48 ) Equity in net income of consolidated subsidiaries 232 192 — — (424 ) — Income from continuing operations 227 227 91 41 (419 ) 167 Income from discontinued operations, net of income tax — — 63 — — 63 Net income 227 227 154 41 (419 ) 230 Net income attributable to noncontrolling interests — — — — (3 ) (3 ) Net income attributable to L-3 $ 227 $ 227 $ 154 $ 41 $ (422 ) $ 227 Comprehensive income attributable to L-3 $ 243 $ 243 $ 162 $ 41 $ (446 ) $ 243 Condensed Combining Statements of Operations: For the quarter ended March 27, 2015: Total net sales $ — $ 796 $ 1,272 $ 486 $ (66 ) $ 2,488 Total cost of sales (13 ) (729 ) (1,172 ) (444 ) 79 (2,279 ) Loss related to business divestitures — — (3 ) (19 ) — (22 ) Operating (loss) income (13 ) 67 97 23 13 187 Interest expense — (39 ) — — — (39 ) Interest and other income, net — 3 — — — 3 (Loss) income from continuing operations before income taxes (13 ) 31 97 23 13 151 Benefit (provision) for income taxes 4 (10 ) (29 ) (7 ) (4 ) (46 ) Equity in net income of consolidated subsidiaries 114 84 — — (198 ) — Income from continuing operations 105 105 68 16 (189 ) 105 Income from discontinued operations, net of income tax — — 4 — — 4 Net income 105 105 72 16 (189 ) 109 Net income attributable to noncontrolling interests — — — — (4 ) (4 ) Net income attributable to L-3 $ 105 $ 105 $ 72 $ 16 (193 ) $ 105 Comprehensive income (loss) attributable to L-3 $ 26 $ 26 $ 69 $ (73 ) $ (22 ) $ 26 Condensed Combining Statements of Cash Flows For the quarter ended March 25, 2016: Operating activities: Net cash from (used in) operating activities $ 256 $ 46 $ 117 $ (32 ) $ (275 ) $ 112 Investing activities: Business acquisitions, net of cash acquired — (27 ) — — — (27 ) Proceeds from sale of businesses, net of closing date cash balances — 576 — — — 576 Investments in L-3 Communications (1 ) — — — 1 — Other investing activities — 3 (12 ) (10 ) — (19 ) Net cash (used in) from investing activities from continuing operations (1 ) 552 (12 ) (10 ) 1 530 Financing activities: Common stock repurchased (198 ) — — — — (198 ) Dividends paid on L-3 Holdings common stock (58 ) — — — — (58 ) Dividends paid to L-3 Holdings — (256 ) — — 256 — Investments from L-3 Holdings — 1 — — (1 ) — Other financing activities 1 (131 ) (46 ) 66 107 (3 ) Net cash (used in) from financing activities from continuing operations (255 ) (386 ) (46 ) 66 362 (259 ) Net decrease in cash and cash equivalents of discontinued operations — — (56 ) — — (56 ) Net increase in cash — 212 3 24 88 327 Cash and cash equivalents, beginning of the period — 137 — 165 (95 ) 207 Cash and cash equivalents, end of the period $ — $ 349 $ 3 $ 189 $ (7 ) $ 534 For the quarter ended March 27, 2015: Operating activities: Net cash from operating activities $ 158 $ 107 $ 4 $ 1 $ (158 ) $ 112 Investing activities: Business acquisitions, net of cash acquired — (41 ) — — — (41 ) Investments in L-3 Communications (13 ) — — — 13 — Other investing activities — (19 ) (5 ) (9 ) — (33 ) Net cash used in investing activities from continuing operations (13 ) (60 ) (5 ) (9 ) 13 (74 ) Financing activities: Common stock repurchased (100 ) — — — — (100 ) Dividends paid on L-3 Holdings common stock (58 ) — — — — (58 ) Dividends paid to L-3 Holdings — (158 ) — — 158 — Investments from L-3 Holdings — 13 — — (13 ) — Other financing activities 13 (53 ) 4 (7 ) 51 8 Net cash (used in) from financing activities from continuing operations (145 ) (198 ) 4 (7 ) 196 (150 ) Effect of foreign currency exchange rate changes on cash — — — (11 ) — (11 ) Net decrease in cash and cash equivalents of discontinued operations — — (3 ) — — (3 ) Change in cash balance in assets held for sale — — 1 — — 1 Net (decrease) increase in cash — (151 ) 1 (26 ) 51 (125 ) Cash and cash equivalents, beginning of the period — 361 1 142 (62 ) 442 Cash and cash equivalents, end of the period $ — $ 210 $ 2 $ 116 $ (11 ) $ 317

Basis of Presentation (Policies

Basis of Presentation (Policies)	3 Months Ended
	Mar. 25, 2016
Principles of Consolidation and Reporting	Principles of Consolidation and Reporting The accompanying financial statements comprise the consolidated financial statements of L-3 Holdings and L-3 Communications. L-3 Holdings’ only asset is its investment in the common stock of L-3 Communications, its wholly-owned subsidiary, and its only obligations are: (1) its guarantee of borrowings under the Amended and Restated Revolving Credit Facility (Credit Facility) of L-3 Communications and (2) its guarantee of other contractual obligations of L-3 Communications and its subsidiaries. All issuances of and conversions into L-3 Holdings’ equity securities, including grants of stock options, restricted stock units and performance units by L-3 Holdings to employees and directors of L-3 Communications and its subsidiaries, have been reflected in the consolidated financial statements of L-3 Communications. As a result, the consolidated financial positions, results of operations and cash flows of L-3 Holdings and L-3 Communications are substantially the same. See Note 23 for additional information regarding the unaudited financial information of L-3 Communications and its subsidiaries. The unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (U.S. GAAP) for interim financial information and in accordance with the instructions to Form 10-Q and Article 10 of Regulation S-X of the Securities and Exchange Commission (SEC). Accordingly, they do not include all of the disclosures required by U.S. GAAP for a complete set of annual audited financial statements. The December 31, 2015 condensed consolidated balance sheet data was derived from audited financial statements, but does not include all disclosures required by U.S. GAAP. In the opinion of management, all adjustments (consisting of normal and recurring adjustments) considered necessary for a fair statement of the results for the interim periods presented have been included. The results of operations for the interim periods are not necessarily indicative of results for the full year. It is the Company’s established practice to close its books for the quarters ending March, June and September on the Friday preceding the end of the calendar quarter. The interim unaudited condensed consolidated financial statements included herein have been prepared and are labeled based on that convention. The Company closes its books for annual periods on December 31 regardless of what day it falls on. Certain reclassifications have been made to conform prior-year amounts to the current-year presentation.
Accounting Estimates	Accounting Estimates The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of sales and costs of sales during the reporting period. The most significant of these estimates and assumptions for L-3 relate to contract revenue, profit and loss recognition, fair values of assets acquired and liabilities assumed in business combinations, market values for inventories reported at lower of cost or market, pension and post-retirement benefit obligations, stock-based employee compensation expense, income taxes, including the valuation of deferred tax assets, litigation reserves and environmental obligations, accrued product warranty costs, liabilities for the voluntary return program of various EoTech holographic weapon sight products, and the recoverability, useful lives and valuation of recorded amounts of long-lived assets, identifiable intangible assets and goodwill. Changes in estimates are reflected in the periods during which they become known. Actual amounts will differ from these estimates and could differ materially. Sales and profits on contracts that are covered by accounting standards for construction-type and production-type contracts and federal government contractors are substantially recognized using percentage-of-completion (POC) methods of accounting. Approximately 49% of the Company’s net sales in 2015 were accounted for under contract accounting standards, of which approximately 41% were fixed-price type contracts and approximately 8% were cost-plus type contracts. For contracts that are accounted for under contract accounting standards, sales and profits are recognized based on: (1) a POC method of accounting (fixed-price contracts), (2) allowable costs incurred plus the estimated profit on those costs (cost-plus contracts), or (3) direct labor hours expended multiplied by the contractual fixed rate per hour plus incurred costs for material (time-and-material contracts). Sales and profits on fixed-price production contracts under which units are produced and delivered in a continuous or sequential process are recorded as units are delivered based on their contractual selling prices (the “units-of-delivery” method). Sales and profits on each fixed-price production contract under which units are not produced and delivered in a continuous or sequential process, or under which a relatively few number of units are produced, are recorded based on the ratio of actual cumulative costs incurred to total estimated costs at completion of the contract, multiplied by the total estimated contract revenue, less cumulative sales recognized in prior periods (the “cost-to-cost” method). Under both POC methods of accounting, a single estimated total profit margin is used to recognize profit for each contract over its entire period of performance, which can exceed one year. Accounting for the sales and profit on these fixed-price type contracts requires the preparation of estimates of: (1) the total contract revenue, (2) the total costs at completion, which is equal to the sum of the actual incurred costs to date on the contract and the estimated costs to complete the contract’s statement of work, and (3) the measurement of progress towards completion. The estimated profit or loss at completion on a contract is equal to the difference between the total estimated contract revenue and the total estimated cost at completion. The profit recorded on a contract in any period using either the units-of-delivery method or cost-to-cost method is equal to the current estimated total profit margin multiplied by the cumulative sales recognized, less the amount of cumulative profit previously recorded for the contract. Sales and profits on cost-plus type contracts that are covered by contract accounting standards are recognized as allowable costs are incurred on the contract, at an amount equal to the allowable costs plus the estimated profit on those costs. The estimated profit on a cost-plus type contract is fixed or variable based on the contractual fee arrangement. Incentive and award fees are the primary variable fee contractual arrangement types for the Company. Incentive and award fees on cost-plus type contracts are included as an element of total estimated contract revenues and are recorded as sales when a basis exists for the reasonable prediction of performance in relation to established contractual targets and the Company is able to make reasonably dependable estimates for them. Sales and profits on time-and-material type contracts are recognized on the basis of direct labor hours expended multiplied by the contractual fixed rate per hour, plus the actual costs of materials and other direct non-labor costs. Revisions or adjustments to estimates for a contract’s revenue, estimated costs at completion and estimated profit or loss are often required as work progresses under a contract, as experience is gained, as facts and circumstances change and as new information is obtained, even though the scope of work required under the contract may not change. Revisions or adjustments may also be required if contract modifications occur. The impact of revisions in profit (loss) estimates for all types of contracts subject to POC accounting are recognized on a cumulative catch-up basis in the period in which the revisions are made. The revisions in contract estimates, if significant, can materially affect the Company’s results of operations and cash flows, as well as reduce the valuations of receivables and inventories, and in some cases result in liabilities to complete contracts in a loss position. Aggregate net changes in contract estimates amounted to increases of $60 million, or 24% of consolidated operating income for the quarterly period ended March 25, 2016, and increases of $32 million, or 17% of consolidated operating income for the quarterly period ended March 27, 2015. As previously disclosed, during the fourth quarter of 2015, the Company commenced a voluntary return program and began accepting customer returns for various EoTech holographic weapons sight (HWS) products that may have been affected by certain performance issues. The return program gives eligible owners of such HWS products the option to return their products in exchange for a refund of the purchase price, including shipping costs. The Company initially recorded a reduction to net sales of $20 million in the Warrior Systems sector of the Electronic Systems segment in the fourth quarter of 2015, associated with establishing a product returns allowance to reflect the estimated cost of the return program. The program has now been in operation for more than four months, and as of April 22, 2016, the Company had approved refunds at a cost of approximately $21 million, with an average refund cost per unit of $507. Accordingly, with the benefit of a larger volume of actual refund transactions, the Company used a statistical analysis of the voluntary return program to estimate the number and cost of future refunds. In its statistical analysis, the Company utilized empirical models to forecast the expected emergence pattern of new refunds over time to produce a probabilistic distribution of new refund costs that reflects the existing level of estimation uncertainty. Based on this analysis, the Company expects the total cost of the voluntary return program to be approximately $35 million, and has therefore increased the product returns allowance by recording a reduction to net sales of $15 million during the first quarter of 2016. The product returns allowance was $25 million at March 25, 2016, reflects refund payments made to eligible owners during the quarter and is included in other current liabilities on the unaudited condensed consolidated balance sheets. See Note 9. The Company will continue to review the product returns allowance as the program matures and new information becomes available. The Company’s ongoing evaluation may cause it to record further adjustments to the allowance in future periods. These adjustments could be material. For a more complete discussion of these estimates and assumptions, see the Annual Report on Form 10-K for the year ended December 31, 2015.
Adoption of New Accounting Standards	In February 2016, the FASB issued ASU 2016-02, Leases In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers Other accounting standard updates effective for interim and annual periods beginning after December 15, 2016 are not expected to have an impact on the Company’s financial position, results of operations or cash flows.
Adjustments for New Accounting Pronouncement [Member]
Adoption of New Accounting Standards	In March 2016, the Financial Accounting Standards Board (FASB) issued ASU 2016-09 , Improvements to Employee Share-Based Payment Accounting

Divestitures and Acquisitions (

Divestitures and Acquisitions (Tables)	3 Months Ended
	Mar. 25, 2016
Unaudited Pro Forma Statements of Operations Data	The following unaudited pro forma Statements of Operations data present the combined results of the Company and its business acquisitions completed during the quarterly period ended March 25, 2016 and the year ended December 31, 2015, assuming that the business acquisitions completed during these periods had occurred on January 1, 2015. First Quarter Ended March 25, 2016 March 27, 2015 (in millions, except per share data) Pro forma net sales $ 2,353 $ 2,518 Pro forma income from continuing operations 167 108 Pro forma net income attributable to L-3 227 108 Pro forma diluted earnings per share from continuing operations 2.08 1.24 Pro forma diluted earnings per share 2.87 1.29
NSS [Member]
Statement of Operations Data Classified as Discontinued Operations	The table below presents statement of operations data for NSS, which was previously a reportable segment and has been classified as discontinued operations and includes allocated interest expense for debt not directly attributable or related to L-3’s other operations. Interest expense was allocated in accordance with the accounting standards for discontinued operations and was based on the ratio of NSS’s net assets to the sum of: (1) total L-3 consolidated net assets and (2) L-3 consolidated total debt. First Quarter Ended March 25, 2016 March 27, 2015 (in millions) Net sales $ 86 $ 238 Cost of sales (92 ) (225 ) Gain related to business divestiture (1) 64 — Operating income from discontinued operations 58 13 Interest expense allocated to discontinued operations — (5 ) Income from discontinued operations before income taxes 58 8 Income tax benefit (expense) 5 (4 ) Income from discontinued operations, net of income taxes $ 63 $ 4 (1) The first quarter ended March 25, 2016 includes a gain of $64 million (before and after income taxes) on the sale of the NSS business.
Schedule of Major Classes of Assets and Liabilities Included in Discontinued Operations	The major classes of assets and liabilities included in discontinued operations related to NSS are presented in the table below. December 31, (in millions) Assets Current assets $ 201 Property, plant and equipment, net 25 Goodwill (1) 390 Other assets 48 Total assets of discontinued operations $ 664 Liabilities Accounts payable, trade $ 48 Other current liabilities 78 Current liabilities 126 Long-term liabilities 94 Total liabilities of discontinued operations $ 220 (1) The goodwill balance at December 31, 2015 is based on an allocation of the goodwill attributable to the NSS reporting unit to discontinued operations based on the relative fair value of the NSS business retained by L-3 and NSS business sold.

Contracts in Process (Tables)

Contracts in Process (Tables)	3 Months Ended
	Mar. 25, 2016
Text Block [Abstract]
Components of Contracts in Process	The components of contracts in process are presented in the table below. March 25, December 31, (in millions) Unbilled contract receivables, gross $ 2,243 $ 2,097 Unliquidated progress payments (977 ) (869 ) Unbilled contract receivables, net 1,266 1,228 Inventoried contract costs, gross 1,097 975 Unliquidated progress payments (137 ) (122 ) Inventoried contract costs, net 960 853 Total contracts in process $ 2,226 $ 2,081
General and Administrative, Independent Research and Development and Bid and Proposal Costs	The table below presents a summary of G&A, IRAD and B&P costs included in inventoried contract costs and the changes to them, including amounts charged to cost of sales by the Company’s U.S. Government contractor businesses for the periods presented. First Quarter Ended March 25, March 27, (in millions) Amounts included in inventoried contract costs at beginning of the period $ 137 $ 117 Contract costs incurred: IRAD and B&P 65 63 Other G&A 194 195 Total 259 258 Amounts charged to cost of sales (239 ) (247 ) Amounts included in inventoried contract costs at end of the period $ 157 $ 128
Selling, General and Administrative Expenses and Research and Development Expenses	The table below presents a summary of selling, general and administrative expenses and research and development expenses for the Company’s commercial businesses, which are expensed as incurred and included in cost of sales on the unaudited condensed consolidated statements of operations. First Quarter Ended March 25, March 27, (in millions) Selling, general and administrative expenses $ 52 $ 70 Research and development expenses 11 12 Total $ 63 $ 82

Inventories (Tables)

Inventories (Tables)	3 Months Ended
	Mar. 25, 2016
Inventory Disclosure [Abstract]
Inventories at Lower of Cost or Market	Inventories at Lower of Cost or Market. March 25, December 31, (in millions) Raw materials, components and sub-assemblies $ 174 $ 164 Work in process 101 103 Finished goods 76 66 Total $ 351 $ 333

Goodwill and Identifiable Int37

Goodwill and Identifiable Intangible Assets (Tables)	3 Months Ended
	Mar. 25, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Changes in Goodwill by Segment	The table below presents the changes in goodwill allocated to the Company’s reporting units in each reportable segment. Electronic Aerospace Communication Consolidated (in millions) Goodwill $ 3,994 $ 1,691 $ 1,038 $ 6,723 Accumulated impairment losses (69 ) (338 ) (35 ) (442 ) Balance at December 31, 2015 3,925 1,353 1,003 6,281 Business acquisitions (1) — — 22 22 Foreign currency translation adjustments (2) (7 ) 10 — 3 Balance at March 25, 2016 $ 3,918 $ 1,363 $ 1,025 $ 6,306 Goodwill $ 3,987 $ 1,701 $ 1,060 $ 6,748 Accumulated impairment losses (69 ) (338 ) (35 ) (442 ) $ 3,918 $ 1,363 $ 1,025 $ 6,306 (1) The increase in goodwill for the Communication Systems segment was due to the ATM business acquisition. (2) The decrease in goodwill presented in the Electronic Systems segment was due to the strengthening of the U.S. dollar against the British pound, primarily offset by the weakening of the U.S. dollar against the Canadian dollar and the Euro. The increase in goodwill presented in the Aerospace Systems segment was due to the weakening of the U.S. dollar against the Canadian dollar.
Identifiable Intangible Assets	The table below presents information for the Company’s identifiable intangible assets that are subject to amortization. March 25, 2016 December 31, 2015 Weighted Gross Accumulated Net Gross Accumulated Net (in years) (in millions) Customer contractual relationships 16 $ 372 $ 251 $ 121 $ 370 $ 246 $ 124 Technology 11 158 94 64 156 91 65 Other 18 21 11 10 21 11 10 Total 15 $ 551 $ 356 $ 195 $ 547 $ 348 $ 199
Amortization Expense	The table below presents amortization expense recorded by the Company for its identifiable intangible assets. First Quarter Ended March 25, March 27, (in millions) Amortization Expense $ 8 $ 9
Estimated Amortization Expense	Based on gross carrying amounts at March 25, 2016, the Company’s estimate of amortization expense for identifiable intangible assets for the years ending December 31, 2016 through 2020 is presented in the table below. Year Ending December 31, 2016 2017 2018 2019 2020 (in millions) Estimated amortization expense $ 33 $ 31 $ 27 $ 24 $ 21

Other Current Liabilities and38

Other Current Liabilities and Other Liabilities (Tables)	3 Months Ended
	Mar. 25, 2016
Text Block [Abstract]
Other Current Liabilities	The table below presents the components of other current liabilities. March 25, December 31, (in millions) Other Current Liabilities: Estimated costs in excess of estimated contract value to complete contracts in process in a loss position $ 76 $ 82 Accrued product warranty costs 66 70 Accrued interest 48 45 Deferred revenues 33 32 Product returns allowance (see Note 2) 25 20 Accruals for pending and threatened litigation (see Note 18) 1 6 Other 154 139 Total other current liabilities $ 403 $ 394
Other Liabilities	The table below presents the components of other liabilities. March 25, December 31, (in millions) Other Liabilities: Non-current income taxes payable (see Note 11) $ 161 $ 161 Deferred compensation 49 45 Accrued workers’ compensation 37 38 Accrued product warranty costs 37 35 Notes payable and capital lease obligations 10 10 Other 77 79 Total other liabilities $ 371 $ 368
Changes in Company's Accrued Product Warranty Costs	The table below presents the changes in the Company’s accrued product warranty costs. First Quarter Ended March 25, March 27, (in millions) Accrued product warranty costs: (1) Balance at January 1 $ 105 $ 93 Acquisitions during the period — 1 Accruals for product warranties issued during the period 9 17 Settlements made during the period (11 ) (17 ) Balance at end of period $ 103 $ 94 (1) Warranty obligations incurred in connection with long-term production contracts that are accounted for under the POC cost-to-cost method are included within the contract estimates at completion and are excluded from the above amounts. The balances above include both the current and non-current amounts.

Debt (Tables)

Debt (Tables)	3 Months Ended
	Mar. 25, 2016
Debt Disclosure [Abstract]
Components of Debt and Reconciliation to Carrying Amount of Current and Long-Term Debt	The components of debt and a reconciliation to the carrying amount of current and long-term debt are presented in the table below. March 25, December 31, (in millions) L-3 Communications: Borrowings under Amended and Restated Revolving Credit Facility (1) $ — $ — 3.95% Senior Notes due 2016 500 500 1.50% Senior Notes due 2017 350 350 5.20% Senior Notes due 2019 1,000 1,000 4.75% Senior Notes due 2020 800 800 4.95% Senior Notes due 2021 650 650 3.95% Senior Notes due 2024 350 350 Principal amount of long-term debt 3,650 3,650 Unamortized discounts (7 ) (8 ) Deferred debt issue costs (17 ) (18 ) Carrying amount of long-term debt 3,626 3,624 Current portion of long-term debt (499 ) (499 ) Carrying amount of long-term debt, excluding current portion $ 3,127 $ 3,125 (1) During the quarterly period ended March 25, 2016, L-3 Communications’ aggregate borrowings and repayments under the Credit Facility were each $217 million. At March 25, 2016, L-3 Communications had the full availability of its $1 billion Credit Facility, which expires on February 3, 2017.

Accumulated Other Comprehensi40

Accumulated Other Comprehensive (Loss) Income (AOCI) (Tables)	3 Months Ended
	Mar. 25, 2016
Equity [Abstract]
Summary of Amounts Reclassified from AOCI into Net Income	The changes in the AOCI balances, including amounts reclassified from AOCI into net income, are presented in the table below. Foreign Unrealized Unrecognized prior service Total (in millions) Balance at December 31, 2015 $ (101 ) $ (8 ) $ (465 ) $ (574 ) Other comprehensive income before reclassifications, net of tax 1 6 — 7 Amounts reclassified from AOCI, net of tax — 1 8 9 Net current period other comprehensive income 1 7 8 16 Balance at March 25, 2016 $ (100 ) $ (1 ) $ (457 ) $ (558 ) Balance at December 31, 2014 $ 19 $ (5 ) $ (598 ) $ (584 ) Other comprehensive loss before reclassifications, net of tax (87 ) (5 ) — (92 ) Amounts reclassified from AOCI, net of tax — 2 11 13 Net current period other comprehensive (loss) income (87 ) (3 ) 11 (79 ) Balance at March 27, 2015 $ (68 ) $ (8 ) $ (587 ) $ (663 ) Further details regarding the amounts reclassified from AOCI into net income are presented in the table below. Amount Reclassified from AOCI (a) First Quarter Ended Details About AOCI Components March 25, March 27, (in millions) Loss on hedging instruments $ (3 ) $ (2 ) Cost of sales-products (3 ) (2 ) Income from continuing operations before income taxes 2 — Provision for income taxes $ (1 ) $ (2 ) Income from continuing operations Amortization of defined benefit pension items: Net loss $ (12 ) $ (17 ) (b) (12 ) (17 ) Income from continuing operations before income taxes 4 6 Provision for income taxes $ (8 ) $ (11 ) Income from continuing operations Total reclassification for the period $ (9 ) $ (13 ) Income from continuing operations (a) Amounts in parenthesis indicate charges to the unaudited condensed consolidated statements of operations. (b) Amounts related to pension and postretirement benefit plans were reclassified from AOCI and recorded as a component of net periodic benefit cost (see Note 19 for additional information).

L-3 Holdings' Earnings Per Co41

L-3 Holdings' Earnings Per Common Share (Tables)	3 Months Ended
	Mar. 25, 2016
Earnings Per Share [Abstract]
Reconciliation of Basic and Diluted Earnings per Share (EPS)	A reconciliation of basic and diluted earnings per share (EPS) is presented in the table below. First Quarter Ended March 25, March 27, (in millions, except per Reconciliation of net income: Net income $ 230 $ 109 Net income from continuing operations attributable to noncontrolling interests (3 ) (4 ) Net income attributable to L-3 Holdings’ common shareholders $ 227 $ 105 Earnings attributable to L-3 Holdings’ common shareholders: Continuing operations $ 164 $ 101 Discontinued operations, net of income tax 63 4 Net income attributable to L-3 Holdings’ common shareholders $ 227 $ 105 Earnings per share attributable to L-3 Holdings’ common shareholders: Basic: Weighted average common shares outstanding 77.8 82.3 Basic earnings per share: Continuing operations $ 2.11 $ 1.23 Discontinued operations, net of income tax 0.81 0.05 Net income $ 2.92 $ 1.28 Diluted: Common and potential common shares: Weighted average common shares outstanding 77.8 82.3 Assumed exercise of stock options 2.0 2.9 Unvested restricted stock awards 1.1 1.4 Employee stock purchase plan contributions 0.1 0.1 Performance unit awards 0.1 0.2 Assumed purchase of common shares for treasury (2.1 ) (3.1 ) Common and potential common shares 79.0 83.8 Diluted earnings per share: Continuing operations $ 2.08 $ 1.20 Discontinued operations, net of income tax 0.79 0.05 Net income $ 2.87 $ 1.25

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 25, 2016
Fair Value Disclosures [Abstract]
Company's Assets and Liabilities at Fair Value on Recurring Basis	The following table presents the fair value hierarchy level for each of the Company’s assets and liabilities that are measured and recorded at fair value on a recurring basis. March 25, 2016 December 31, 2015 Description Level 1 (1) Level 2 (2) Level 3 (3) Level 1 (1) Level 2 (2) Level 3 (3) (in millions) Assets Cash equivalents $ 329 $ — $ — $ 187 $ — $ — Derivatives (foreign currency forward contracts) — 7 — — 2 — Total assets $ 329 $ 7 $ — $ 187 $ 2 $ — Liabilities Derivatives (foreign currency forward contracts) $ — $ 11 $ — $ — $ 16 $ — (1) Level 1 is based on quoted market prices available in active markets for identical assets or liabilities as of the reporting date. Cash equivalents are primarily held in registered money market funds, which are valued using quoted market prices. (2) Level 2 is based on pricing inputs other than quoted prices in active markets, which are either directly or indirectly observable. The fair value is determined using a valuation model based on observable market inputs, including quoted foreign currency forward exchange rates and consideration of non-performance risk. (3) Level 3 is based on pricing inputs that are not observable and not corroborated by market data. The Company has no Level 3 assets or liabilities.

Financial Instruments (Tables)

Financial Instruments (Tables)	3 Months Ended
	Mar. 25, 2016
Investments, All Other Investments [Abstract]
Carrying Amounts and Estimated Fair Values of Company's Long-Term Debt and Foreign Currency Forward Contracts	The carrying amounts and estimated fair values of the Company’s other financial instruments are presented in the table below. March 25, 2016 December 31, 2015 Carrying Estimated Carrying Estimated (in millions) Senior Notes (1) $ 3,626 $ 3,745 $ 3,624 $ 3,754 Foreign currency forward contracts (2) (4 ) (4 ) (14 ) (14 ) (1) The Company measures the fair value of its Senior Notes using Level 2 inputs based primarily on current market yields for its existing debt traded in the secondary market. (2) The Company measures the fair values of foreign currency forward contracts based on forward exchange rates. See Note 17 for additional disclosures regarding the notional amounts and fair values of foreign currency forward contracts.

Derivative Financial Instrume44

Derivative Financial Instruments (Tables)	3 Months Ended
	Mar. 25, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Notional Amounts of Company's Outstanding Foreign Currency Forward Contracts by Currency	The table below presents the notional amounts of the Company’s outstanding foreign currency forward contracts by currency at March 25, 2016. Currency Notional Amounts (in millions) Canadian dollar $ 183 U.S. dollar 90 Euro 36 British pound 7 Total $ 316
Location of Company's Derivative Instruments Recorded at Fair Value on the Condensed Consolidated Balance Sheets	The table below presents the location of the Company’s derivative instruments recorded at fair value on the condensed consolidated balance sheets. March 25, 2016 December 31, 2015 Other Other Other Other Other Other Other Other (in millions) Derivatives designated as hedging instruments: Foreign currency forward contracts (1) $ 3 $ 4 $ 10 $ 1 $ 1 $ 1 $ 15 $ 1 Total derivative instruments $ 3 $ 4 $ 10 $ 1 $ 1 $ 1 $ 15 $ 1 (1) See Note 15 for a description of the fair value hierarchy related to the Company’s foreign currency forward contracts.

Pension and Other Postretirem45

Pension and Other Postretirement Benefits (Tables)	3 Months Ended
	Mar. 25, 2016
Compensation and Retirement Disclosure [Abstract]
Components of Net Periodic Benefit Cost	The following table summarizes the components of net periodic benefit cost for the Company’s pension and other postretirement benefit plans. Pension Plans Postretirement Benefit Plans First Quarter Ended First Quarter Ended March 25, March 27, March 25, March 27, (in millions) Components of net periodic benefit cost: Service cost $ 27 $ 32 $ 1 $ 1 Interest cost 35 37 1 2 Expected return on plan assets (51 ) (52 ) (1 ) (1 ) Amortization of prior service costs (credits) — 1 (1 ) (1 ) Amortization of net loss 13 17 — — Net periodic benefit cost $ 24 $ 35 $ — $ 1

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	3 Months Ended
	Mar. 25, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Weighted Average Assumptions in Valuation Model	The weighted average assumptions used in the valuation model for this grant are presented in the table below. Expected holding period (in years) 5.0 Expected volatility 21.3 % Expected dividend yield 2.8 % Risk-free interest rate 1.1 %

Supplemental Cash Flow Inform47

Supplemental Cash Flow Information (Tables)	3 Months Ended
	Mar. 25, 2016
Supplemental Cash Flow Elements [Abstract]
Supplemental Cash Flow Information	First Quarter Ended March 25, March 27, (in millions) Interest paid on outstanding debt $ 36 $ 37 Income tax payments 12 10 Income tax refunds 1 1

Segment Information (Tables)

Segment Information (Tables)	3 Months Ended
	Mar. 25, 2016
Segment Reporting [Abstract]
Summary of Segment Information	The tables below present net sales, operating income, depreciation and amortization and total assets by reportable segment. First Quarter Ended March 25, March 27, (in millions) Net Sales: Electronic Systems $ 903 $ 1,046 Aerospace Systems 1,007 1,027 Communication Systems 477 455 Elimination of intercompany sales (34 ) (40 ) Consolidated total $ 2,353 $ 2,488 Operating Income: Electronic Systems $ 95 $ 113 Aerospace Systems 106 60 Communication Systems 51 36 Segment total 252 209 Loss related to business divestiture (1) — (22 ) Consolidated total $ 252 $ 187 Depreciation and amortization: Electronic Systems $ 25 $ 28 Aerospace Systems 13 12 Communication Systems 12 12 Consolidated total $ 50 $ 52 (1) See Note 5 for information regarding the Company’s business divestiture. March 25, December 31, (in millions) Total Assets: Electronic Systems $ 6,533 $ 6,426 Aerospace Systems 2,769 2,630 Communication Systems 2,064 1,984 Corporate 545 363 Assets of discontinued operations — 664 Consolidated total $ 11,911 $ 12,067

Condensed Combining Financial49

Condensed Combining Financial Information of L-3 Communications and Its Subsidiaries (Tables)	3 Months Ended
	Mar. 25, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Condensed Combining Balance Sheets	The following unaudited condensed combining financial information presents the results of operations, financial position and cash flows of: (1) L-3 Holdings, excluding L-3 Communications and its consolidated subsidiaries (the Parent), (2) L-3 Communications, excluding its consolidated subsidiaries, (3) the Guarantor Subsidiaries, (4) the Non-Guarantor Subsidiaries, and (5) the eliminations to arrive at the information for L-3 on a consolidated basis. L-3 L-3 Guarantor Non- Eliminations Consolidated (in millions) Condensed Combining Balance Sheets: At March 25, 2016: Current assets: Cash and cash equivalents $ — $ 349 $ 3 $ 189 $ (7 ) $ 534 Billed receivables, net — 276 256 247 — 779 Contracts in process — 925 1,030 271 — 2,226 Other current assets — 279 134 111 — 524 Total current assets — 1,829 1,423 818 (7 ) 4,063 Goodwill — 2,339 2,974 993 — 6,306 Other assets — 784 500 258 — 1,542 Investment in and amounts due from consolidated subsidiaries 4,378 5,393 4,312 — (14,083 ) — Total assets $ 4,378 $ 10,345 $ 9,209 $ 2,069 $ (14,090 ) $ 11,911 Current portion of long-term debt $ — $ 499 $ — $ — $ — $ 499 Current liabilities — 913 818 456 (7 ) 2,180 Amounts due to consolidated subsidiaries — — — 247 (247 ) — Other long-term liabilities — 1,428 195 31 — 1,654 Long-term debt — 3,127 — — — 3,127 Total liabilities — 5,967 1,013 734 (254 ) 7,460 L-3 shareholders’ equity 4,378 4,378 8,196 1,335 (13,909 ) 4,378 Noncontrolling interests — — — — 73 73 Total equity 4,378 4,378 8,196 1,335 (13,836 ) 4,451 Total liabilities and equity $ 4,378 $ 10,345 $ 9,209 $ 2,069 $ (14,090 ) $ 11,911 At December 31, 2015: Current assets: Cash and cash equivalents $ — $ 137 $ — $ 165 $ (95 ) $ 207 Billed receivables, net — 278 297 171 — 746 Contracts in process — 872 958 251 — 2,081 Other current assets — 288 137 109 — 534 Assets of discontinued operations — — 664 — — 664 Total current assets — 1,575 2,056 696 (95 ) 4,232 Goodwill — 2,318 2,973 990 — 6,281 Other assets — 798 496 260 — 1,554 Investment in and amounts due from consolidated subsidiaries 4,355 5,609 3,739 111 (13,814 ) — Total assets $ 4,355 $ 10,300 $ 9,264 $ 2,057 $ (13,909 ) $ 12,067 Current portion of long-term debt $ — $ 499 $ — $ — $ — $ 499 Current liabilities — 911 899 445 (95 ) 2,160 Liabilities of discontinued operations — — 220 — — 220 Other long-term liabilities — 1,410 195 29 — 1,634 Long-term debt — 3,125 — — — 3,125 Total liabilities — 5,945 1,314 474 (95 ) 7,638 L-3 shareholders’ equity 4,355 4,355 7,950 1,583 (13,888 ) 4,355 Noncontrolling interests — — — — 74 74 Total equity 4,355 4,355 7,950 1,583 (13,814 ) 4,429 Total liabilities and equity $ 4,355 $ 10,300 $ 9,264 $ 2,057 $ (13,909 ) $ 12,067
Condensed Combining Statements of Operations	Condensed Combining Statements of Operations: For the quarter ended March 25, 2016: Total net sales $ — $ 822 $ 1,185 $ 409 $ (63 ) $ 2,353 Total cost of sales (6 ) (739 ) (1,068 ) (357 ) 69 (2,101 ) Operating (loss) income (6 ) 83 117 52 6 252 Interest expense — (41 ) — — — (41 ) Interest and other income, net — 3 — 1 — 4 (Loss) income from continuing operations before income taxes (6 ) 45 117 53 6 215 Benefit (provision) for income taxes 1 (10 ) (26 ) (12 ) (1 ) (48 ) Equity in net income of consolidated subsidiaries 232 192 — — (424 ) — Income from continuing operations 227 227 91 41 (419 ) 167 Income from discontinued operations, net of income tax — — 63 — — 63 Net income 227 227 154 41 (419 ) 230 Net income attributable to noncontrolling interests — — — — (3 ) (3 ) Net income attributable to L-3 $ 227 $ 227 $ 154 $ 41 $ (422 ) $ 227 Comprehensive income attributable to L-3 $ 243 $ 243 $ 162 $ 41 $ (446 ) $ 243 Condensed Combining Statements of Operations: For the quarter ended March 27, 2015: Total net sales $ — $ 796 $ 1,272 $ 486 $ (66 ) $ 2,488 Total cost of sales (13 ) (729 ) (1,172 ) (444 ) 79 (2,279 ) Loss related to business divestitures — — (3 ) (19 ) — (22 ) Operating (loss) income (13 ) 67 97 23 13 187 Interest expense — (39 ) — — — (39 ) Interest and other income, net — 3 — — — 3 (Loss) income from continuing operations before income taxes (13 ) 31 97 23 13 151 Benefit (provision) for income taxes 4 (10 ) (29 ) (7 ) (4 ) (46 ) Equity in net income of consolidated subsidiaries 114 84 — — (198 ) — Income from continuing operations 105 105 68 16 (189 ) 105 Income from discontinued operations, net of income tax — — 4 — — 4 Net income 105 105 72 16 (189 ) 109 Net income attributable to noncontrolling interests — — — — (4 ) (4 ) Net income attributable to L-3 $ 105 $ 105 $ 72 $ 16 (193 ) $ 105 Comprehensive income (loss) attributable to L-3 $ 26 $ 26 $ 69 $ (73 ) $ (22 ) $ 26
Condensed Combining Statements of Cash Flows	Condensed Combining Statements of Cash Flows For the quarter ended March 25, 2016: Operating activities: Net cash from (used in) operating activities $ 256 $ 46 $ 117 $ (32 ) $ (275 ) $ 112 Investing activities: Business acquisitions, net of cash acquired — (27 ) — — — (27 ) Proceeds from sale of businesses, net of closing date cash balances — 576 — — — 576 Investments in L-3 Communications (1 ) — — — 1 — Other investing activities — 3 (12 ) (10 ) — (19 ) Net cash (used in) from investing activities from continuing operations (1 ) 552 (12 ) (10 ) 1 530 Financing activities: Common stock repurchased (198 ) — — — — (198 ) Dividends paid on L-3 Holdings common stock (58 ) — — — — (58 ) Dividends paid to L-3 Holdings — (256 ) — — 256 — Investments from L-3 Holdings — 1 — — (1 ) — Other financing activities 1 (131 ) (46 ) 66 107 (3 ) Net cash (used in) from financing activities from continuing operations (255 ) (386 ) (46 ) 66 362 (259 ) Net decrease in cash and cash equivalents of discontinued operations — — (56 ) — — (56 ) Net increase in cash — 212 3 24 88 327 Cash and cash equivalents, beginning of the period — 137 — 165 (95 ) 207 Cash and cash equivalents, end of the period $ — $ 349 $ 3 $ 189 $ (7 ) $ 534 For the quarter ended March 27, 2015: Operating activities: Net cash from operating activities $ 158 $ 107 $ 4 $ 1 $ (158 ) $ 112 Investing activities: Business acquisitions, net of cash acquired — (41 ) — — — (41 ) Investments in L-3 Communications (13 ) — — — 13 — Other investing activities — (19 ) (5 ) (9 ) — (33 ) Net cash used in investing activities from continuing operations (13 ) (60 ) (5 ) (9 ) 13 (74 ) Financing activities: Common stock repurchased (100 ) — — — — (100 ) Dividends paid on L-3 Holdings common stock (58 ) — — — — (58 ) Dividends paid to L-3 Holdings — (158 ) — — 158 — Investments from L-3 Holdings — 13 — — (13 ) — Other financing activities 13 (53 ) 4 (7 ) 51 8 Net cash (used in) from financing activities from continuing operations (145 ) (198 ) 4 (7 ) 196 (150 ) Effect of foreign currency exchange rate changes on cash — — — (11 ) — (11 ) Net decrease in cash and cash equivalents of discontinued operations — — (3 ) — — (3 ) Change in cash balance in assets held for sale — — 1 — — 1 Net (decrease) increase in cash — (151 ) 1 (26 ) 51 (125 ) Cash and cash equivalents, beginning of the period — 361 1 142 (62 ) 442 Cash and cash equivalents, end of the period $ — $ 210 $ 2 $ 116 $ (11 ) $ 317

Description of Business - Addit

Description of Business - Additional Information (Detail)	3 Months Ended
	Mar. 25, 2016Segment
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of reportable segments	3

Basis of Presentation - Additio

Basis of Presentation - Additional Information (Detail) $ in Millions	Apr. 22, 2016USD ($)$ / Product	Mar. 25, 2016USD ($)	Dec. 31, 2015USD ($)	Mar. 27, 2015USD ($)
Summary Of Significant Accounting Policies [Line Items]
Percentage of net sales accounted for under contract accounting standards		49.00%
Percentage of fixed-price type contracts		41.00%
Percentage of cost-plus type contracts		8.00%
Period of performance for contracts accounted for under the percentage-of-completion method of accounting, minimum		1 year
Increase in operating income due to changes in contract estimates		$ 60		$ 32
Percentage of increase in consolidated operating income due to changes in contract estimates		24.00%		17.00%
Total expected cost of the voluntary return program		$ 35
Product returns allowance		25	$ 20
Electronic Systems [Member]
Summary Of Significant Accounting Policies [Line Items]
Reduction to net sales		$ 15	$ 20
Subsequent Event [Member]
Summary Of Significant Accounting Policies [Line Items]
Approved refunds cost	$ 21
Average refund cost per unit | $ / Product	507

Divestitures and Acquisitions -

Divestitures and Acquisitions - Additional Information (Detail) € in Millions, £ in Millions, $ in Millions	Feb. 01, 2016USD ($)	Mar. 25, 2016USD ($)	Mar. 27, 2015USD ($)	Jan. 22, 2016USD ($)	Dec. 31, 2015USD ($)	Oct. 13, 2015USD ($)	May. 29, 2015USD ($)	May. 29, 2015EUR (€)	May. 27, 2015USD ($)	May. 27, 2015GBP (£)	Jan. 21, 2015USD ($)
Business Acquisition [Line Items]
Gain (loss) related to business divestiture			$ (22)
Amount of goodwill recognized		$ 6,306			$ 6,281
CACI International Inc [Member]
Business Acquisition [Line Items]
Proceeds from sale of discontinued operations	$ 561
MSI [Member]
Business Acquisition [Line Items]
Sale of business, base sale price							$ 318	€ 295
Estimated employee pension related liabilities | €								€ 60
Gain (loss) related to business divestiture			$ (22)
MITEQ, Inc. [Member]
Business Acquisition [Line Items]
Aggregate purchase price of acquisition											$ 41
Acquisition date		Jan. 21, 2015
Amount of goodwill recognized											11
Goodwill deductible for income tax purposes											$ 4
Advanced Technical Materials, Inc. [Member]
Business Acquisition [Line Items]
Aggregate purchase price of acquisition				$ 27
Acquisition date		Jan. 22, 2016
Amount of goodwill recognized				$ 22
ForceX, Inc. [Member]
Business Acquisition [Line Items]
Aggregate purchase price of acquisition						$ 61
Acquisition date		Oct. 13, 2015
Amount of goodwill recognized						48
Goodwill deductible for income tax purposes						$ 47
CTC Aviation Group [Member]
Business Acquisition [Line Items]
Aggregate purchase price of acquisition									$ 236	£ 153
Acquisition date		May 27, 2015
Amount of goodwill recognized									$ 185

Divestitures and Acquisitions53

Divestitures and Acquisitions - Statement of Operations Data Classified as Discontinued Operations (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 25, 2016	Mar. 27, 2015
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income from discontinued operations, net of income taxes	$ 63	$ 4
NSS [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net sales	86	238
Cost of sales	(92)	$ (225)
Gain related to business divestiture	64
Operating income from discontinued operations	$ 58	$ 13
Interest expense allocated to discontinued operations		(5)
Income from discontinued operations before income taxes	$ 58	8
Income tax benefit (expense)	5	(4)
Income from discontinued operations, net of income taxes	$ 63	$ 4

Divestitures and Acquisitions54

Divestitures and Acquisitions - Statement of Operations Data Classified as Discontinued Operations (Parenthetical) (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 25, 2016	Mar. 27, 2015
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain (loss) on sale of business		$ (22)
NSS [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain (loss) on sale of business	$ 64

Divestitures and Acquisitions55

Divestitures and Acquisitions - Schedule of Major Classes of Assets and Liabilities Included in Discontinued Operations (Detail) - USD ($) $ in Millions	Mar. 25, 2016	Dec. 31, 2015
Assets
Current assets		$ 664
Liabilities
Current liabilities		220
NSS [Member] | Discontinued Operations, Held-for-sale [Member]
Assets
Current assets		201
Property, plant and equipment, net		25
Goodwill		390
Other assets		48
Total assets of discontinued operations		664
Liabilities
Accounts payable, trade		48
Other current liabilities		78
Current liabilities		126
Long-term liabilities		94
Total liabilities of discontinued operations		$ 220

Divestitures and Acquisitions56

Divestitures and Acquisitions - Unaudited Pro Forma Statements of Operations Data (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 25, 2016	Mar. 27, 2015
Business Combinations [Abstract]
Pro forma net sales	$ 2,353	$ 2,518
Pro forma income from continuing operations	167	108
Pro forma net income attributable to L-3	$ 227	$ 108
Pro forma diluted earnings per share from continuing operations	$ 2.08	$ 1.24
Pro forma diluted earnings per share	$ 2.87	$ 1.29

Contracts in Process - Componen

Contracts in Process - Components of Contracts in Process (Detail) - USD ($) $ in Millions	Mar. 25, 2016	Dec. 31, 2015
Components of contracts in process
Unbilled contract receivables, gross	$ 2,243	$ 2,097
Unliquidated progress payments	(977)	(869)
Unbilled contract receivables, net	1,266	1,228
Inventoried contract costs, gross	1,097	975
Unliquidated progress payments	(137)	(122)
Inventoried contract costs, net	960	853
Total contracts in process	$ 2,226	$ 2,081

Contracts in Process - General

Contracts in Process - General and Administrative, Independent Research and Development and Bids and Proposal Costs (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 25, 2016	Mar. 27, 2015
Inventory Disclosure [Abstract]
Amounts included in inventoried contract costs at beginning of the period	$ 137	$ 117
Contract costs incurred:
IRAD and B&P	65	63
Other G&A	194	195
Total	259	258
Amounts charged to cost of sales	(239)	(247)
Amounts included in inventoried contract costs at end of the period	$ 157	$ 128

Contracts in Process - Selling,

Contracts in Process - Selling, General and Administrative Expenses and Research and Development Expenses (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 25, 2016	Mar. 27, 2015
Inventory Disclosure [Abstract]
Selling, general and administrative expenses	$ 52	$ 70
Research and development expenses	11	12
Total	$ 63	$ 82

Inventories - Inventories at Lo

Inventories - Inventories at Lower of Cost or Market (Detail) - USD ($) $ in Millions	Mar. 25, 2016	Dec. 31, 2015
Inventory Disclosure [Abstract]
Raw materials, components and sub-assemblies	$ 174	$ 164
Work in process	101	103
Finished goods	76	66
Total	$ 351	$ 333

Goodwill and Identifiable Int61

Goodwill and Identifiable Intangible Assets - Changes in Goodwill by Segment (Detail) $ in Millions	3 Months Ended
	Mar. 25, 2016USD ($)
Goodwill [Line Items]
Goodwill	$ 6,723
Accumulated impairment losses	(442)
Balance, Beginning	6,281
Business acquisitions	22
Foreign currency translation adjustments	3
Balance, Ending	6,306
Goodwill	6,748
Accumulated impairment losses	(442)
Goodwill, net of accumulated impairment losses	6,306
Electronic Systems [Member]
Goodwill [Line Items]
Goodwill	3,994
Accumulated impairment losses	(69)
Balance, Beginning	$ 3,925
Business acquisitions
Foreign currency translation adjustments	$ (7)
Balance, Ending	3,918
Goodwill	3,987
Accumulated impairment losses	(69)
Goodwill, net of accumulated impairment losses	3,918
Aerospace Systems [Member]
Goodwill [Line Items]
Goodwill	1,691
Accumulated impairment losses	(338)
Balance, Beginning	$ 1,353
Business acquisitions
Foreign currency translation adjustments	$ 10
Balance, Ending	1,363
Goodwill	1,701
Accumulated impairment losses	(338)
Goodwill, net of accumulated impairment losses	1,363
Communication Systems [Member]
Goodwill [Line Items]
Goodwill	1,038
Accumulated impairment losses	(35)
Balance, Beginning	1,003
Business acquisitions	$ 22
Foreign currency translation adjustments
Balance, Ending	$ 1,025
Goodwill	1,060
Accumulated impairment losses	(35)
Goodwill, net of accumulated impairment losses	$ 1,025

Goodwill and Identifiable Int62

Goodwill and Identifiable Intangible Assets - Identifiable Intangible Assets (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 25, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period (in years)	15 years
Gross Carrying Amount	$ 551	$ 547
Accumulated Amortization	356	348
Net Carrying Amount	$ 195	199
Customer Contractual Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period (in years)	16 years
Gross Carrying Amount	$ 372	370
Accumulated Amortization	251	246
Net Carrying Amount	$ 121	124
Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period (in years)	11 years
Gross Carrying Amount	$ 158	156
Accumulated Amortization	94	91
Net Carrying Amount	$ 64	65
Other [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period (in years)	18 years
Gross Carrying Amount	$ 21	21
Accumulated Amortization	11	11
Net Carrying Amount	$ 10	$ 10

Goodwill and Identifiable Int63

Goodwill and Identifiable Intangible Assets - Amortization Expense (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 25, 2016	Mar. 27, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization Expense	$ 8	$ 9

Goodwill and Identifiable Int64

Goodwill and Identifiable Intangible Assets - Estimated Amortization Expense (Detail) $ in Millions	Mar. 25, 2016USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
Estimated amortization expense, 2016	$ 33
Estimated amortization expense, 2017	31
Estimated amortization expense, 2018	27
Estimated amortization expense, 2019	24
Estimated amortization expense, 2020	$ 21

Other Current Liabilities and65

Other Current Liabilities and Other Liabilities - Other Current Liabilities (Detail) - USD ($) $ in Millions	Mar. 25, 2016	Dec. 31, 2015
Other Current Liabilities:
Estimated costs in excess of estimated contract value to complete contracts in process in a loss position	$ 76	$ 82
Accrued product warranty costs	66	70
Accrued interest	48	45
Deferred revenues	33	32
Product returns allowance	25	20
Accruals for pending and threatened litigation	1	6
Other	154	139
Total other current liabilities	$ 403	$ 394

Other Current Liabilities and66

Other Current Liabilities and Other Liabilities - Other Liabilities (Detail) - USD ($) $ in Millions	Mar. 25, 2016	Dec. 31, 2015
Other Liabilities:
Non-current income taxes payable	$ 161	$ 161
Deferred compensation	49	45
Accrued workers' compensation	37	38
Accrued product warranty costs	37	35
Notes payable and capital lease obligations	10	10
Other	77	79
Total other liabilities	$ 371	$ 368

Other Current Liabilities and67

Other Current Liabilities and Other Liabilities - Changes in Company's Accrued Product Warranty Costs (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 25, 2016	Mar. 27, 2015
Accrued product warranty costs:
Balance at January 1	$ 105	$ 93
Acquisitions during the period		1
Accruals for product warranties issued during the period	$ 9	17
Settlements made during the period	(11)	(17)
Balance at end of period	$ 103	$ 94

Debt - Components of Debt and R

Debt - Components of Debt and Reconciliation to Carrying Amount of Current and Long-Term Debt (Detail) - USD ($) $ in Millions	Mar. 25, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Carrying amount of long-term debt	$ 3,626	$ 3,624
Long-term debt, current and noncurrent
Current portion of long-term debt	(499)	(499)
Carrying amount of long-term debt, excluding current portion	3,127	3,125
Carrying amount of long-term debt	3,626	3,624
L-3 Communications Corporation [Member]
Debt Instrument [Line Items]
3.95% Senior Notes due 2016	500	500
1.50% Senior Notes due 2017	350	350
5.20% Senior Notes due 2019	1,000	1,000
4.75% Senior Notes due 2020	800	800
4.95% Senior Notes due 2021	650	650
3.95% Senior Notes due 2024	350	350
Long-term debt, current and noncurrent
Current portion of long-term debt	(499)	(499)
Carrying amount of long-term debt, excluding current portion	$ 3,127	$ 3,125
L-3 Communications Corporation [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Borrowings under Amended and Restated Revolving Credit Facility
L-3 Communications Holdings, Inc. [Member]
Debt Instrument [Line Items]
Principal amount of long-term debt	$ 3,650	$ 3,650
Unamortized discounts	(7)	(8)
Deferred debt issue costs	(17)	(18)
Carrying amount of long-term debt	3,626	3,624
Long-term debt, current and noncurrent
Current portion of long-term debt	(499)	(499)
Carrying amount of long-term debt, excluding current portion	3,127	3,125
Carrying amount of long-term debt	$ 3,626	$ 3,624

Debt - Components of Debt and69

Debt - Components of Debt and Reconciliation to Carrying Amount of Current and Long-Term Debt (Parenthetical) (Detail) - USD ($) $ in Millions	Mar. 25, 2016	Dec. 31, 2015	Mar. 25, 2016	Mar. 27, 2015
Debt Instrument [Line Items]
Repayments under the Credit Facility			$ 217	$ 108
Proceeds under the Credit Facility			$ 217	$ 108
L-3 Communications Corporation [Member] | 3.95% Senior Notes due 2016 [Member]
Debt Instrument [Line Items]
Interest rate on Senior Notes	3.95%	3.95%	3.95%
Debt instrument maturity period	2,016	2,016
L-3 Communications Corporation [Member] | 1.50% Senior Notes due 2017 [Member]
Debt Instrument [Line Items]
Interest rate on Senior Notes	1.50%	1.50%	1.50%
Debt instrument maturity period	2,017	2,017
L-3 Communications Corporation [Member] | 5.20% Senior Notes due 2019 [Member]
Debt Instrument [Line Items]
Interest rate on Senior Notes	5.20%	5.20%	5.20%
Debt instrument maturity period	2,019	2,019
L-3 Communications Corporation [Member] | 4.75% Senior Notes due 2020 [Member]
Debt Instrument [Line Items]
Interest rate on Senior Notes	4.75%	4.75%	4.75%
Debt instrument maturity period	2,020	2,020
L-3 Communications Corporation [Member] | 4.95% Senior Notes due 2021 [Member]
Debt Instrument [Line Items]
Interest rate on Senior Notes	4.95%	4.95%	4.95%
Debt instrument maturity period	2,021	2,021
L-3 Communications Corporation [Member] | 3.95% Senior Notes due 2024 [Member]
Debt Instrument [Line Items]
Interest rate on Senior Notes	3.95%	3.95%	3.95%
Debt instrument maturity period	2,024	2,024
Revolving Credit Facility [Member] | L-3 Communications Corporation [Member]
Debt Instrument [Line Items]
Repayments under the Credit Facility			$ 217
Proceeds under the Credit Facility			217
Available borrowings under Credit Facility	$ 1,000		$ 1,000
Revolving credit facility expiration date			Feb. 3, 2017

Debt - Additional Information (

Debt - Additional Information (Detail) - L-3 Communications Corporation [Member] - 3.95% Senior Notes due 2016 [Member] - USD ($) $ in Millions	3 Months Ended
	Mar. 25, 2016	Mar. 24, 2016
Debt Instrument [Line Items]
Redemption amount		$ 300
Redemption Date	May 20, 2016
Minimum [Member]
Debt Instrument [Line Items]
Redemption price as percentage of principal amount		100.00%
Redemption at treasury rate		0.50%

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	Mar. 25, 2016	Mar. 25, 2016	Mar. 27, 2015	Dec. 31, 2015
Operating Loss Carryforwards [Line Items]
Effective tax rate		22.30%	30.50%
Reduction to income tax expense		$ 48	$ 46
Anticipated decrease in unrecognized tax benefits over the next 12 months	$ 6	6
Accrued potential interest included within current and non-current income taxes payable	19	19		$ 18
Accrued potential interest included within current and non-current income taxes payable, after income taxes	11	11		11
Potential penalties	8	$ 8		$ 9
New Accounting Pronouncement, Early Adoption, Effect [Member]
Operating Loss Carryforwards [Line Items]
Reduction to income tax expense	$ 10

Accumulated Other Comprehensi72

Accumulated Other Comprehensive (Loss) Income (AOCI) - Summary of Amounts Reclassified from AOCI into Net Income (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 25, 2016	Mar. 27, 2015
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Beginning Balance	$ (574)	$ (584)
Other comprehensive income (loss) before reclassifications, net of tax	7	(92)
Amounts reclassified from AOCI, net of tax	9	13
Total other comprehensive income (loss)	16	(79)
Ending Balance	(558)	(663)
Cost of sales-products	(1,266)	(1,382)
Income from continuing operations before income taxes	215	151
Provision for income taxes	(48)	(46)
Income from continuing operations	167	105
Amount Reclassified from AOCI [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income from continuing operations	(9)	(13)
Foreign Currency Translation Adjustment [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Beginning Balance	(101)	19
Other comprehensive income (loss) before reclassifications, net of tax	$ 1	$ (87)
Amounts reclassified from AOCI, net of tax
Total other comprehensive income (loss)	$ 1	$ (87)
Ending Balance	(100)	(68)
Unrealized Losses on Hedging Instruments [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Beginning Balance	(8)	(5)
Other comprehensive income (loss) before reclassifications, net of tax	6	(5)
Amounts reclassified from AOCI, net of tax	1	2
Total other comprehensive income (loss)	7	(3)
Ending Balance	(1)	(8)
Unrealized Losses on Hedging Instruments [Member] | Amount Reclassified from AOCI [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Cost of sales-products	(3)	(2)
Income from continuing operations before income taxes	(3)	$ (2)
Provision for income taxes	2
Income from continuing operations	(1)	$ (2)
Unrecognized Losses and Prior Service Cost, Net [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Beginning Balance	$ (465)	$ (598)
Other comprehensive income (loss) before reclassifications, net of tax
Amounts reclassified from AOCI, net of tax	$ 8	$ 11
Total other comprehensive income (loss)	8	11
Ending Balance	(457)	(587)
Amortization of Defined Benefit Pension Items [Member] | Amount Reclassified from AOCI [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net loss	(12)	(17)
Income from continuing operations before income taxes	(12)	(17)
Provision for income taxes	4	6
Income from continuing operations	$ (8)	$ (11)

Equity - Additional Information

Equity - Additional Information (Detail) - USD ($)	Feb. 09, 2016	Apr. 22, 2016	Mar. 25, 2016	Mar. 27, 2015	Dec. 04, 2014
Class of Stock [Line Items]
Aggregate amount of repurchased shares			$ 198,000,000	$ 100,000,000
Remaining authorized amount of share repurchase programs			$ 608,000,000
Cash dividend declared per share	$ 0.70		$ 0.70	$ 0.65
Cash dividends			$ 58,000,000
Accrued dividends through payment			$ 4,000,000
Dividend paid, record date			Mar. 1, 2016
Dividend paid date			Mar. 15, 2016
Treasury Stock [Member]
Class of Stock [Line Items]
Aggregate amount of repurchased shares			$ 198,000,000	$ 100,000,000
Share Repurchase Program December 4, 2014 [Member]
Class of Stock [Line Items]
Amount of shares authorized to be repurchased					$ 1,500,000,000
Average price per share of repurchased shares			$ 115.80
Aggregate amount of repurchased shares			$ 198,000,000
Share Repurchase Program December 4, 2014 [Member] | Subsequent Event [Member]
Class of Stock [Line Items]
Average price per share of repurchased shares		$ 119.36
Aggregate amount of repurchased shares		$ 56,000,000
Share Repurchase Program December 4, 2014 [Member] | Treasury Stock [Member]
Class of Stock [Line Items]
Number of common shares repurchased			1,708,185
Share Repurchase Program December 4, 2014 [Member] | Treasury Stock [Member] | Subsequent Event [Member]
Class of Stock [Line Items]
Number of common shares repurchased		467,854

L-3 Holdings' Earnings Per Co74

L-3 Holdings' Earnings Per Common Share - Reconciliation of Basic and Diluted Earnings per Share (EPS) (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 25, 2016	Mar. 27, 2015
Reconciliation of net income:
Net income	$ 230	$ 109
Net income from continuing operations attributable to noncontrolling interests	(3)	(4)
Net income (loss) attributable to L-3	227	105
Earnings attributable to L-3 Holdings' common shareholders:
Continuing operations	164	101
Discontinued operations, net of income tax	63	4
Net income attributable to L-3 Holdings' common shareholders	$ 227	$ 105
Basic:
Weighted average common shares outstanding	77.8	82.3
Basic earnings per share:
Continuing operations	$ 2.11	$ 1.23
Discontinued operations, net of income tax	0.81	0.05
Net income	$ 2.92	$ 1.28
Common and potential common shares:
Weighted average common shares outstanding	77.8	82.3
Assumed purchase of common shares for treasury	(2.1)	(3.1)
Common and potential common shares	79	83.8
Diluted earnings per share:
Continuing operations	$ 2.08	$ 1.20
Discontinued operations, net of income tax	0.79	0.05
Net income	$ 2.87	$ 1.25
Stock Options [Member]
Common and potential common shares:
Common and potential common shares	2	2.9
Unvested Restricted Stock Awards [Member]
Common and potential common shares:
Common and potential common shares	1.1	1.4
Performance Unit Awards [Member]
Common and potential common shares:
Common and potential common shares	0.1	0.2
Employee Stock Purchase Plan Contributions [Member]
Common and potential common shares:
Common and potential common shares	0.1	0.1

L-3 Holdings' Earnings Per Co75

L-3 Holdings' Earnings Per Common Share - Additional Information (Detail) - shares shares in Millions	3 Months Ended
	Mar. 25, 2016	Mar. 27, 2015
Earnings Per Share [Abstract]
Shares excluded from computation of diluted earnings per share	1.2	0.2

Fair Value Measurements - Compa

Fair Value Measurements - Company's Assets and Liabilities at Fair Value on Recurring Basis (Detail) - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Millions	Mar. 25, 2016	Dec. 31, 2015
Level 1 [Member]
Assets
Cash equivalents	$ 329	$ 187
Derivatives (foreign currency forward contracts)
Total assets	$ 329	$ 187
Liabilities
Derivatives (foreign currency forward contracts)
Level 2 [Member]
Assets
Cash equivalents
Derivatives (foreign currency forward contracts)	$ 7	$ 2
Total assets	7	2
Liabilities
Derivatives (foreign currency forward contracts)	$ 11	$ 16
Level 3 [Member]
Assets
Cash equivalents
Derivatives (foreign currency forward contracts)
Total assets
Liabilities
Derivatives (foreign currency forward contracts)

Financial Instruments - Carryin

Financial Instruments - Carrying Amounts and Estimated Fair Values of Company's Long-Term Debt and Foreign Currency Forward Contracts (Detail) - USD ($) $ in Millions	Mar. 25, 2016	Dec. 31, 2015
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior Notes, Carrying Amount	$ 3,626	$ 3,624
Senior Notes, Estimated Fair Value	3,745	3,754
Estimated Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Foreign currency forward contracts	(4)	(14)
Carrying Amount [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Foreign currency forward contracts	$ (4)	$ (14)

Derivative Financial Instrume78

Derivative Financial Instruments - Notional Amounts of Company's Outstanding Foreign Currency Forward Contracts by Currency (Detail)	Mar. 25, 2016USD ($)
Derivative [Line Items]
Notional amounts of foreign currency forward contracts	$ 316,000,000
Canadian Dollar [Member]
Derivative [Line Items]
Notional amounts of foreign currency forward contracts	183,000,000
U.S. Dollar [Member]
Derivative [Line Items]
Notional amounts of foreign currency forward contracts	90,000,000
Euro [Member]
Derivative [Line Items]
Notional amounts of foreign currency forward contracts	36,000,000
British Pound [Member]
Derivative [Line Items]
Notional amounts of foreign currency forward contracts	$ 7,000,000

Derivative Financial Instrume79

Derivative Financial Instruments - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 25, 2016	Mar. 27, 2015
Derivative [Line Items]
Pre-tax losses on Derivatives	$ (215)	$ (151)
Estimated net amount of existing losses expected to be reclassified into income within the next 12 months	7
Foreign Exchange Forward [Member]
Derivative [Line Items]
Pre-tax losses on Derivatives	$ 3	$ 2
Foreign Currency Forward Contracts [Member]
Derivative [Line Items]
Foreign currency forward contracts, maturity year	2,020

Derivative Financial Instrume80

Derivative Financial Instruments - Location of Company's Derivative Instruments Recorded at Fair Value on the Condensed Consolidated Balance Sheets (Detail) - USD ($) $ in Millions	Mar. 25, 2016	Dec. 31, 2015
Other Current Liabilities [Member]
Derivatives, Fair Value [Line Items]
Total derivative instruments, liabilities	$ 10	$ 15
Other Current Liabilities [Member] | Foreign Currency Forward Contracts [Member] | Designated as Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Total derivative instruments, liabilities	10	15
Other Liabilities [Member]
Derivatives, Fair Value [Line Items]
Total derivative instruments, liabilities	1	1
Other Liabilities [Member] | Foreign Currency Forward Contracts [Member] | Designated as Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Total derivative instruments, liabilities	1	1
Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Total derivative instruments, assets	3	1
Other Current Assets [Member] | Foreign Currency Forward Contracts [Member] | Designated as Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Total derivative instruments, assets	3	1
Other Assets [Member]
Derivatives, Fair Value [Line Items]
Total derivative instruments, assets	4	1
Other Assets [Member] | Foreign Currency Forward Contracts [Member] | Designated as Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Total derivative instruments, assets	$ 4	$ 1

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail) € in Millions, $ in Millions	Jul. 21, 2013EUR (€)	Mar. 25, 2016USD ($)Plaintiff
Property Damages [Member]
Contingencies And Commitments [Line Items]
Claims for estimated damages	€ 11
Business Interruption [Member]
Contingencies And Commitments [Line Items]
Claims for estimated damages	€ 35
Bashkirian Airways [Member]
Contingencies And Commitments [Line Items]
Claims for estimated damages | $		$ 3.7
Number of remaining plaintiffs | Plaintiff		4

Pension and Other Postretirem82

Pension and Other Postretirement Benefits - Components of Net Periodic Benefit Cost (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 25, 2016	Mar. 27, 2015
Pension Plans [Member]
Components of net periodic benefit cost:
Service cost	$ 27	$ 32
Interest cost	35	37
Expected return on plan assets	$ (51)	(52)
Amortization of prior service costs (credits)		1
Amortization of net loss	$ 13	17
Net periodic benefit cost	24	35
Postretirement Benefit Plans [Member]
Components of net periodic benefit cost:
Service cost	1	1
Interest cost	1	2
Expected return on plan assets	(1)	(1)
Amortization of prior service costs (credits)	$ (1)	$ (1)
Amortization of net loss
Net periodic benefit cost		$ 1

Pension and Other Postretirem83

Pension and Other Postretirement Benefits - Additional Information (Detail) $ in Millions	3 Months Ended
	Mar. 25, 2016USD ($)
Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Contribution to defined benefit plans	$ 12
Expected contributions to plans during the remainder of fiscal year	88
Postretirement Benefit Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Contribution to defined benefit plans	2
Expected contributions to plans during the remainder of fiscal year	$ 8

Stock-Based Compensation - Addi

Stock-Based Compensation - Additional Information (Detail) $ / shares in Units, $ in Millions	Feb. 01, 2016USD ($)Employees	Mar. 25, 2016$ / sharesshares
NSS [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Unvested restricted stock unit and stock option awards held by employees | Employees	300
Reversed previously recorded stock compensation expense relating to the original awards | $	$ 4
Stock compensation expense on cash payments made | $	$ 5
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options granted | shares		608,860
Weighted average exercise price		$ 116.20
Expiration period of stock options granted from date of grant		10 years
Vesting period		3 years
Weighted average grant date fair value of stock options		$ 15.80
Unvested Restricted Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		3 years
Units granted | shares		383,693
Weighted average grant date fair value		$ 116.20
Unvested Restricted Stock Awards [Member] | Non Employee Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		1 year
Performance Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Units granted | shares		51,892
Weighted average grant date fair value		$ 116.20
Length of service after grant date		3 years
Minimum payout range		0.00%
Maximum payout range		200.00%

Stock-Based Compensation - Weig

Stock-Based Compensation - Weighted Average Assumptions in Valuation Model (Detail) - Stock Options [Member]	3 Months Ended
	Mar. 25, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected holding period (in years)	5 years
Expected volatility	21.30%
Expected dividend yield	2.80%
Risk-free interest rate	1.10%

Supplemental Cash Flow Inform86

Supplemental Cash Flow Information - Supplemental Cash Flow Information (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 25, 2016	Mar. 27, 2015
Additional Cash Flow Elements and Supplemental Cash Flow Information [Abstract]
Interest paid on outstanding debt	$ 36	$ 37
Income tax payments	12	10
Income tax refunds	$ 1	$ 1

Segment Information - Additiona

Segment Information - Additional Information (Detail) $ in Millions	3 Months Ended
	Mar. 25, 2016Segment	Mar. 27, 2015USD ($)
Segment Reporting [Abstract]
Number of reportable segments | Segment	3
Corporate expenses | $		$ 4

Segment Information - Summary o

Segment Information - Summary of Segment Information (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 25, 2016	Mar. 27, 2015	Dec. 31, 2015
Net Sales:
Net sales	$ 2,353	$ 2,488
Operating Income:
Loss related to business divestiture		(22)
Operating income	$ 252	187
Depreciation and amortization:
Depreciation and amortization	$ 50	52
Total Assets:
Assets of discontinued operations			$ 664
Total Assets	$ 11,911		12,067
Operating Segments [Member]
Operating Income:
Operating income	252	209
Operating Segments [Member] | Electronic Systems [Member]
Net Sales:
Net sales	903	1,046
Operating Income:
Operating income	95	113
Depreciation and amortization:
Depreciation and amortization	25	28
Total Assets:
Total Assets	6,533		6,426
Operating Segments [Member] | Aerospace Systems [Member]
Net Sales:
Net sales	1,007	1,027
Operating Income:
Operating income	106	60
Depreciation and amortization:
Depreciation and amortization	13	12
Total Assets:
Total Assets	2,769		2,630
Operating Segments [Member] | Communication Systems [Member]
Net Sales:
Net sales	477	455
Operating Income:
Operating income	51	36
Depreciation and amortization:
Depreciation and amortization	12	12
Total Assets:
Total Assets	2,064		1,984
Corporate [Member]
Total Assets:
Total Assets	545		$ 363
Elimination of Intercompany Sales [Member]
Net Sales:
Net sales	$ (34)	$ (40)

Condensed Combining Financial89

Condensed Combining Financial Information of L-3 Communications and Its Subsidiaries - Additional Information (Detail)	Mar. 25, 2016
L-3 Communications Corporation [Member]
Condensed Financial Statements, Captions [Line Items]
Ownership percentage	100.00%

Condensed Combining Financial90

Condensed Combining Financial Information of L-3 Communications and Its Subsidiaries - Condensed Combining Balance Sheets (Detail) - USD ($) $ in Millions	Mar. 25, 2016	Dec. 31, 2015	Mar. 27, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 534	$ 207	$ 317	$ 442
Billed receivables, net	779	746
Contracts in process	2,226	2,081
Other current assets	$ 524	534
Assets of discontinued operations		664
Total current assets	$ 4,063	4,232
Goodwill	6,306	6,281
Other assets	$ 1,542	$ 1,554
Investment in and amounts due from consolidated subsidiaries
Total assets	$ 11,911	$ 12,067
Current portion of long-term debt	499	499
Current liabilities	$ 2,180	2,160
Liabilities of discontinued operations		220
Amounts due to consolidated subsidiaries
Other long-term liabilities	$ 1,654	1,634
Long-term debt	3,127	3,125
Total liabilities	7,460	7,638
L-3 shareholders' equity	4,378	4,355
Noncontrolling interests	73	74
Total equity	4,451	4,429	$ 5,302	$ 5,360
Total liabilities and equity	$ 11,911	$ 12,067
L-3 Communications Holdings, Inc. [Member]
Current assets:
Cash and cash equivalents
Billed receivables, net
Contracts in process
Other current assets
Assets of discontinued operations
Total current assets
Goodwill
Other assets
Investment in and amounts due from consolidated subsidiaries	$ 4,378	$ 4,355
Total assets	4,378	4,355
Current portion of long-term debt	$ 499	$ 499
Current liabilities
Liabilities of discontinued operations
Amounts due to consolidated subsidiaries
Other long-term liabilities
Long-term debt	$ 3,127	$ 3,125
Total liabilities
L-3 shareholders' equity	$ 4,378	$ 4,355
Noncontrolling interests
Total equity	$ 4,378	$ 4,355
Total liabilities and equity	4,378	4,355
L-3 Communications Corporation [Member]
Current assets:
Cash and cash equivalents	349	137	$ 210	$ 361
Billed receivables, net	276	278
Contracts in process	925	872
Other current assets	279	$ 288
Assets of discontinued operations
Total current assets	1,829	$ 1,575
Goodwill	2,339	2,318
Other assets	784	798
Investment in and amounts due from consolidated subsidiaries	5,393	5,609
Total assets	10,345	10,300
Current portion of long-term debt	499	499
Current liabilities	$ 913	$ 911
Liabilities of discontinued operations
Amounts due to consolidated subsidiaries
Other long-term liabilities	$ 1,428	$ 1,410
Long-term debt	3,127	3,125
Total liabilities	5,967	5,945
L-3 shareholders' equity	$ 4,378	$ 4,355
Noncontrolling interests
Total equity	$ 4,378	$ 4,355
Total liabilities and equity	10,345	$ 10,300
Guarantor Subsidiaries [Member]
Current assets:
Cash and cash equivalents	3		2	1
Billed receivables, net	256	$ 297
Contracts in process	1,030	958
Other current assets	134	137
Assets of discontinued operations		664
Total current assets	1,423	2,056
Goodwill	2,974	2,973
Other assets	500	496
Investment in and amounts due from consolidated subsidiaries	4,312	3,739
Total assets	$ 9,209	$ 9,264
Current portion of long-term debt
Current liabilities	$ 818	$ 899
Liabilities of discontinued operations		220
Amounts due to consolidated subsidiaries
Other long-term liabilities	$ 195	$ 195
Long-term debt
Total liabilities	$ 1,013	$ 1,314
L-3 shareholders' equity	$ 8,196	$ 7,950
Noncontrolling interests
Total equity	$ 8,196	$ 7,950
Total liabilities and equity	9,209	9,264
Non-Guarantor Subsidiaries [Member]
Current assets:
Cash and cash equivalents	189	165	116	142
Billed receivables, net	247	171
Contracts in process	271	251
Other current assets	111	$ 109
Assets of discontinued operations
Total current assets	818	$ 696
Goodwill	993	990
Other assets	$ 258	260
Investment in and amounts due from consolidated subsidiaries		111
Total assets	$ 2,069	$ 2,057
Current portion of long-term debt
Current liabilities	$ 456	$ 445
Liabilities of discontinued operations
Amounts due to consolidated subsidiaries	247
Other long-term liabilities	$ 31	$ 29
Long-term debt
Total liabilities	$ 734	$ 474
L-3 shareholders' equity	$ 1,335	$ 1,583
Noncontrolling interests
Total equity	$ 1,335	$ 1,583
Total liabilities and equity	2,069	2,057
Eliminations [Member]
Current assets:
Cash and cash equivalents	$ (7)	$ (95)	$ (11)	$ (62)
Billed receivables, net
Contracts in process
Other current assets
Assets of discontinued operations
Total current assets	$ (7)	$ (95)
Goodwill
Other assets
Investment in and amounts due from consolidated subsidiaries	$ (14,083)	$ (13,814)
Total assets	$ (14,090)	$ (13,909)
Current portion of long-term debt
Current liabilities	$ (7)	$ (95)
Liabilities of discontinued operations
Amounts due to consolidated subsidiaries	$ (247)
Other long-term liabilities
Long-term debt
Total liabilities	$ (254)	$ (95)
L-3 shareholders' equity	(13,909)	(13,888)
Noncontrolling interests	73	74
Total equity	(13,836)	(13,814)
Total liabilities and equity	$ (14,090)	$ (13,909)

Condensed Combining Financial91

Condensed Combining Financial Information of L-3 Communications and Its Subsidiaries - Condensed Combining Statements of Operations (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 25, 2016	Mar. 27, 2015
Condensed Financial Statements, Captions [Line Items]
Total net sales	$ 2,353	$ 2,488
Total cost of sales	$ (2,101)	(2,279)
Loss related to business divestitures		(22)
Operating (loss) income	$ 252	187
Interest expense	(41)	(39)
Interest and other income, net	4	3
(Loss) income from continuing operations before income taxes	215	151
Benefit (provision) for income taxes	$ (48)	$ (46)
Equity in net income of consolidated subsidiaries
Income from continuing operations	$ 167	$ 105
Income from discontinued operations, net of income tax	63	4
Net income	230	109
Net income attributable to noncontrolling interests	(3)	(4)
Net income attributable to L-3	227	105
Comprehensive income (loss) attributable to L-3	$ 243	$ 26
L-3 Communications Holdings, Inc. [Member]
Condensed Financial Statements, Captions [Line Items]
Total net sales
Total cost of sales	$ (6)	$ (13)
Loss related to business divestitures
Operating (loss) income	$ (6)	$ (13)
Interest expense
Interest and other income, net
(Loss) income from continuing operations before income taxes	$ (6)	$ (13)
Benefit (provision) for income taxes	1	4
Equity in net income of consolidated subsidiaries	232	114
Income from continuing operations	$ 227	$ 105
Income from discontinued operations, net of income tax
Net income	$ 227	$ 105
Net income attributable to noncontrolling interests
Net income attributable to L-3	$ 227	$ 105
Comprehensive income (loss) attributable to L-3	243	26
L-3 Communications Corporation [Member]
Condensed Financial Statements, Captions [Line Items]
Total net sales	822	796
Total cost of sales	(739)	$ (729)
Loss related to business divestitures
Operating (loss) income	83	$ 67
Interest expense	(41)	(39)
Interest and other income, net	3	3
(Loss) income from continuing operations before income taxes	45	31
Benefit (provision) for income taxes	(10)	(10)
Equity in net income of consolidated subsidiaries	192	84
Income from continuing operations	$ 227	$ 105
Income from discontinued operations, net of income tax
Net income	$ 227	$ 105
Net income attributable to noncontrolling interests
Net income attributable to L-3	$ 227	$ 105
Comprehensive income (loss) attributable to L-3	243	26
Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Total net sales	1,185	1,272
Total cost of sales	(1,068)	(1,172)
Loss related to business divestitures		(3)
Operating (loss) income	$ 117	$ 97
Interest expense
Interest and other income, net
(Loss) income from continuing operations before income taxes	$ 117	$ 97
Benefit (provision) for income taxes	$ (26)	$ (29)
Equity in net income of consolidated subsidiaries
Income from continuing operations	$ 91	$ 68
Income from discontinued operations, net of income tax	63	4
Net income	$ 154	$ 72
Net income attributable to noncontrolling interests
Net income attributable to L-3	$ 154	$ 72
Comprehensive income (loss) attributable to L-3	162	69
Non-Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Total net sales	409	486
Total cost of sales	(357)	(444)
Loss related to business divestitures		(19)
Operating (loss) income	$ 52	$ 23
Interest expense
Interest and other income, net	$ 1
(Loss) income from continuing operations before income taxes	53	$ 23
Benefit (provision) for income taxes	$ (12)	$ (7)
Equity in net income of consolidated subsidiaries
Income from continuing operations	$ 41	$ 16
Income from discontinued operations, net of income tax
Net income	$ 41	$ 16
Net income attributable to noncontrolling interests
Net income attributable to L-3	$ 41	$ 16
Comprehensive income (loss) attributable to L-3	41	(73)
Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Total net sales	(63)	(66)
Total cost of sales	69	$ 79
Loss related to business divestitures
Operating (loss) income	$ 6	$ 13
Interest expense
Interest and other income, net
(Loss) income from continuing operations before income taxes	$ 6	$ 13
Benefit (provision) for income taxes	(1)	(4)
Equity in net income of consolidated subsidiaries	(424)	(198)
Income from continuing operations	$ (419)	$ (189)
Income from discontinued operations, net of income tax
Net income	$ (419)	$ (189)
Net income attributable to noncontrolling interests	(3)	(4)
Net income attributable to L-3	(422)	(193)
Comprehensive income (loss) attributable to L-3	$ (446)	$ (22)

Condensed Combining Financial92

Condensed Combining Financial Information of L-3 Communications and Its Subsidiaries - Condensed Combining Statements of Cash Flows (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 25, 2016	Mar. 27, 2015
Operating activities:
Net cash from (used in) operating activities	$ 112	$ 112
Investing activities:
Business acquisitions, net of cash acquired	(27)	$ (41)
Proceeds from sale of businesses, net of closing date cash balances	$ 576
Investments in L-3 Communications
Other investing activities	$ (19)	$ (33)
Net cash from (used in) investing activities from continuing operations	530	(74)
Financing activities:
Common stock repurchased	(198)	(100)
Dividends paid on L-3 Holdings common stock	$ (58)	$ (58)
Dividends paid to L-3 Holdings
Investments from L-3 Holdings
Other financing activities	$ (3)	$ 8
Net cash used in financing activities from continuing operations	$ (259)	(150)
Effect of foreign currency exchange rate changes on cash		(11)
Net decrease in cash and cash equivalents of discontinued operations	$ (56)	(3)
Change in cash balance in assets held for sale		1
Net increase (decrease) in cash	$ 327	(125)
Cash and cash equivalents, beginning of the period	207	442
Cash and cash equivalents, end of the period	534	317
L-3 Communications Holdings, Inc. [Member]
Operating activities:
Net cash from (used in) operating activities	$ 256	$ 158
Investing activities:
Business acquisitions, net of cash acquired
Proceeds from sale of businesses, net of closing date cash balances
Investments in L-3 Communications	$ (1)	$ (13)
Other investing activities
Net cash from (used in) investing activities from continuing operations	$ (1)	$ (13)
Financing activities:
Common stock repurchased	(198)	(100)
Dividends paid on L-3 Holdings common stock	$ (58)	$ (58)
Dividends paid to L-3 Holdings
Investments from L-3 Holdings
Other financing activities	$ 1	$ 13
Net cash used in financing activities from continuing operations	$ (255)	$ (145)
Effect of foreign currency exchange rate changes on cash
Net decrease in cash and cash equivalents of discontinued operations
Change in cash balance in assets held for sale
Net increase (decrease) in cash
Cash and cash equivalents, beginning of the period
Cash and cash equivalents, end of the period
L-3 Communications Corporation [Member]
Operating activities:
Net cash from (used in) operating activities	$ 46	$ 107
Investing activities:
Business acquisitions, net of cash acquired	(27)	$ (41)
Proceeds from sale of businesses, net of closing date cash balances	$ 576
Investments in L-3 Communications
Other investing activities	$ 3	$ (19)
Net cash from (used in) investing activities from continuing operations	$ 552	$ (60)
Financing activities:
Common stock repurchased
Dividends paid on L-3 Holdings common stock
Dividends paid to L-3 Holdings	$ (256)	$ (158)
Investments from L-3 Holdings	1	13
Other financing activities	(131)	(53)
Net cash used in financing activities from continuing operations	$ (386)	$ (198)
Effect of foreign currency exchange rate changes on cash
Net decrease in cash and cash equivalents of discontinued operations
Change in cash balance in assets held for sale
Net increase (decrease) in cash	$ 212	$ (151)
Cash and cash equivalents, beginning of the period	137	361
Cash and cash equivalents, end of the period	349	210
Guarantor Subsidiaries [Member]
Operating activities:
Net cash from (used in) operating activities	$ 117	$ 4
Investing activities:
Business acquisitions, net of cash acquired
Proceeds from sale of businesses, net of closing date cash balances
Investments in L-3 Communications
Other investing activities	$ (12)	$ (5)
Net cash from (used in) investing activities from continuing operations	$ (12)	$ (5)
Financing activities:
Common stock repurchased
Dividends paid on L-3 Holdings common stock
Dividends paid to L-3 Holdings
Investments from L-3 Holdings
Other financing activities	$ (46)	$ 4
Net cash used in financing activities from continuing operations	(46)	$ 4
Effect of foreign currency exchange rate changes on cash
Net decrease in cash and cash equivalents of discontinued operations	(56)	$ (3)
Change in cash balance in assets held for sale		1
Net increase (decrease) in cash	$ 3	1
Cash and cash equivalents, beginning of the period		1
Cash and cash equivalents, end of the period	$ 3	2
Non-Guarantor Subsidiaries [Member]
Operating activities:
Net cash from (used in) operating activities	$ (32)	$ 1
Investing activities:
Business acquisitions, net of cash acquired
Proceeds from sale of businesses, net of closing date cash balances
Investments in L-3 Communications
Other investing activities	$ (10)	$ (9)
Net cash from (used in) investing activities from continuing operations	$ (10)	$ (9)
Financing activities:
Common stock repurchased
Dividends paid on L-3 Holdings common stock
Dividends paid to L-3 Holdings
Investments from L-3 Holdings
Other financing activities	$ 66	$ (7)
Net cash used in financing activities from continuing operations	$ 66	(7)
Effect of foreign currency exchange rate changes on cash		$ (11)
Net decrease in cash and cash equivalents of discontinued operations
Change in cash balance in assets held for sale
Net increase (decrease) in cash	$ 24	$ (26)
Cash and cash equivalents, beginning of the period	165	142
Cash and cash equivalents, end of the period	189	116
Eliminations [Member]
Operating activities:
Net cash from (used in) operating activities	$ (275)	$ (158)
Investing activities:
Business acquisitions, net of cash acquired
Proceeds from sale of businesses, net of closing date cash balances
Investments in L-3 Communications	$ 1	$ 13
Other investing activities
Net cash from (used in) investing activities from continuing operations	$ 1	$ 13
Financing activities:
Common stock repurchased
Dividends paid on L-3 Holdings common stock
Dividends paid to L-3 Holdings	$ 256	$ 158
Investments from L-3 Holdings	(1)	(13)
Other financing activities	107	51
Net cash used in financing activities from continuing operations	$ 362	$ 196
Effect of foreign currency exchange rate changes on cash
Net decrease in cash and cash equivalents of discontinued operations
Change in cash balance in assets held for sale
Net increase (decrease) in cash	$ 88	$ 51
Cash and cash equivalents, beginning of the period	(95)	(62)
Cash and cash equivalents, end of the period	$ (7)	$ (11)