Leidos (LDOS) 10-Q 29 Jul 16 2016 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jul. 01, 2016	Jul. 19, 2016
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jul. 1, 2016
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	Q2
Trading Symbol	LDOS
Entity Registrant Name	Leidos Holdings, Inc.
Entity Central Index Key	1,336,920
Current Fiscal Year End Date	--12-30
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		72,800,585
Leidos, Inc.
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jul. 1, 2016
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	Q2
Entity Registrant Name	Leidos, Inc.
Entity Central Index Key	353,394
Current Fiscal Year End Date	--12-30
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding		5,000

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Jul. 01, 2016	Jan. 01, 2016
Current assets:
Cash and cash equivalents	$ 670	$ 656
Receivables, net	924	921
Inventory, prepaid expenses and other current assets	223	216
Total current assets	1,817	1,793
Property, plant and equipment (less accumulated depreciation and amortization of $266 million and $272 million at July 1, 2016, and January 1, 2016, respectively)	131	142
Goodwill and intangible assets, net	1,228	1,232
Deferred income taxes	7	8
Other assets	218	195
Total assets	3,401	3,370
Current liabilities:
Accounts payable and accrued liabilities	720	769
Accrued payroll and employee benefits	269	268
Notes payable and long-term debt, current portion	1	2
Liabilities of discontinued operations	0	1
Total current liabilities	990	1,040
Notes payable and long-term debt, net of current portion	1,092	1,079
Other long-term liabilities	195	183
Commitments and contingencies (Notes 11 and 12)
Stockholders' equity:
Preferred stock, $.0001 par value, 10 million shares authorized and no shares issued and outstanding at July 1, 2016 and January 1, 2016	0	0
Common stock	0	0
Additional paid-in capital	1,358	1,353
Accumulated deficit	(230)	(277)
Accumulated other comprehensive loss	(4)	(8)
Total stockholders’ equity	1,124	1,068
Total liabilities and stockholders' equity	3,401	3,370
Leidos, Inc.
Current assets:
Cash and cash equivalents	670	656
Receivables, net	924	921
Inventory, prepaid expenses and other current assets	223	216
Total current assets	1,817	1,793
Property, plant and equipment (less accumulated depreciation and amortization of $266 million and $272 million at July 1, 2016, and January 1, 2016, respectively)	131	142
Goodwill and intangible assets, net	1,228	1,232
Deferred income taxes	7	8
Other assets	218	195
Note receivable from Leidos Holdings, Inc.	1,638	1,593
Total assets	5,039	4,963
Current liabilities:
Accounts payable and accrued liabilities	720	769
Accrued payroll and employee benefits	269	268
Notes payable and long-term debt, current portion	1	2
Liabilities of discontinued operations	0	1
Total current liabilities	990	1,040
Notes payable and long-term debt, net of current portion	1,092	1,079
Other long-term liabilities	195	183
Commitments and contingencies (Notes 11 and 12)
Stockholders' equity:
Common stock	0	0
Additional paid-in capital	207	207
Accumulated deficit	2,559	2,462
Accumulated other comprehensive loss	(4)	(8)
Total stockholders’ equity	2,762	2,661
Total liabilities and stockholders' equity	$ 5,039	$ 4,963

Condensed Consolidated Balance3

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Jul. 01, 2016	Jan. 01, 2016
Property, plant and equipment, accumulated depreciation and amortization	$ 266	$ 272
Preferred Stock, Par or Stated Value Per Share (dollar per share)	$ 0.0001	$ 0.0001
Preferred Stock, Shares Authorized	10,000,000	10,000,000
Preferred Stock, Shares Issued	0	0
Preferred Stock, Shares Outstanding	0	0
Common stock, par value per share (dollar per share)	$ 0.0001	$ 0.0001
Common stock, shares authorized	500,000,000	500,000,000
Common stock, shares issued	73,000,000	72,000,000
Common stock, shares outstanding	73,000,000	72,000,000
Leidos, Inc.
Property, plant and equipment, accumulated depreciation and amortization	$ 266	$ 272
Common stock, par value per share (dollar per share)	$ 0.01	$ 0.01
Common stock, shares authorized	10,000	10,000
Common stock, shares issued	5,000	5,000
Common stock, shares outstanding	5,000	5,000

Condensed Consolidated Statemen

Condensed Consolidated Statements of Income - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jul. 01, 2016	Jul. 03, 2015	Jul. 01, 2016	Jul. 03, 2015
Revenues	$ 1,288	$ 1,257	$ 2,600	$ 2,503
Costs and expenses:
Cost of revenues	1,141	1,113	2,295	2,206
Selling, general and administrative expenses	57	51	117	126
Acquisition and integration costs	15	0	24	0
Asset impairment charges	0	29	0	69
Operating income	75	64	164	102
Non-operating expense:
Interest expense, net	(13)	(14)	(24)	(28)
Other (expense) income, net	(2)	2	(2)	1
Income from continuing operations before income taxes	60	52	138	75
Income tax expense	(19)	(15)	(44)	(15)
Income from continuing operations	41	37	94	60
Discontinued operations:
Income tax benefit	0	0	0	18
Income from discontinued operations	0	0	0	18
Net income	$ 41	$ 37	$ 94	$ 78
Basic:
Income from continuing operations (dollar per share)	$ 0.56	$ 0.51	$ 1.31	$ 0.82
Income from discontinued operations (dollar per share)	0	0	0	0.25
Basic earnings per share (dollar per share)	0.56	0.51	1.31	1.07
Diluted:
Income from continuing operations (dollar per share)	0.55	0.50	1.27	0.80
Income from discontinued operations (dollar per share)	0	0	0	0.24
Diluted earnings per share (dollar per share)	$ 0.55	$ 0.50	$ 1.27	$ 1.04
Basic weighted average number of shares outstanding (shares)	73	73	72	73
Diluted weighted average number of shares outstanding (shares)	74	74	74	75
Cash dividends declared per share (dollars per share)	$ 0.32	$ 0.32	$ 0.64	$ 0.64
Leidos, Inc.
Revenues	$ 1,288	$ 1,257	$ 2,600	$ 2,503
Costs and expenses:
Cost of revenues	1,141	1,113	2,295	2,206
Selling, general and administrative expenses	57	51	117	126
Acquisition and integration costs	15	0	24	0
Asset impairment charges	0	29	0	69
Operating income	75	64	164	102
Non-operating expense:
Interest expense, net	(10)	(10)	(19)	(21)
Other (expense) income, net	(2)	2	(2)	1
Income from continuing operations before income taxes	63	56	143	82
Income tax expense	(20)	(17)	(46)	(18)
Income from continuing operations	43	39	97	64
Discontinued operations:
Income tax benefit	0	0	0	18
Income from discontinued operations	0	0	0	18
Net income	$ 43	$ 39	$ 97	$ 82

Condensed Consolidated Stateme5

Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 01, 2016	Jul. 03, 2015	Jul. 01, 2016	Jul. 03, 2015
Net income	$ 41	$ 37	$ 94	$ 78
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	4	0	7	(2)
Deferred taxes	(2)	0	(3)	1
Foreign currency translation adjustments, net of tax	2	0	4	(1)
Pension liability adjustments	1	0	1	(1)
Deferred taxes	(1)	1	(1)	1
Pension liability adjustments, net of tax	0	1	0	0
Total other comprehensive income (loss), net of tax	2	1	4	(1)
Comprehensive income	43	38	98	77
Leidos, Inc.
Net income	43	39	97	82
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	4	0	7	(2)
Deferred taxes	(2)	0	(3)	1
Foreign currency translation adjustments, net of tax	2	0	4	(1)
Pension liability adjustments	1	0	1	(1)
Deferred taxes	(1)	1	(1)	1
Pension liability adjustments, net of tax	0	1	0	0
Total other comprehensive income (loss), net of tax	2	1	4	(1)
Comprehensive income	$ 45	$ 40	$ 101	$ 81

Condensed Consolidated Stateme6

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jul. 01, 2016	Jul. 03, 2015
Cash flows from operations:
Net income	$ 94	$ 78
Income from discontinued operations	0	(18)
Adjustments to reconcile net income to net cash provided by operations:
Depreciation and amortization	17	24
Stock-based compensation	16	14
Asset impairment charges	0	69
Other	(3)	(1)
Change in assets and liabilities, net of effects of acquisitions and dispositions:
Receivables	(76)	63
Inventory, prepaid expenses and other current assets	(7)	(10)
Accounts payable and accrued liabilities	7	14
Accrued payroll and employee benefits	2	(20)
Deferred income taxes and income taxes receivable/payable	7	(88)
Other long-term assets/liabilities	1	(16)
Total cash flows provided by operating activities of continuing operations	58	109
Cash flows from investing activities:
Expenditures for property, plant and equipment	(7)	(8)
Payments on accrued purchase price related to prior acquisition	0	(13)
Net proceeds from sale of assets	3	5
Proceeds from disposition of business	23	0
Other	(1)	0
Total cash flows provided by (used in) investing activities of continuing operations	18	(16)
Cash flows from financing activities:
Payments of notes payable and long-term debt	(2)	(47)
Sales of stock and exercises of stock options	6	3
Repurchases of stock and stock received for tax withholdings	(19)	(115)
Dividend payments	(46)	(48)
Other	0	1
Total cash flows used in financing activities of continuing operations	(61)	(206)
Increase (decrease) in cash and cash equivalents from continuing operations	15	(113)
Cash flows from discontinued operations:
Cash provided by operating activities of discontinued operations	0	13
Cash (used in) provided by investing activities of discontinued operations	(1)	6
(Decrease) increase in cash and cash equivalents from discontinued operations	(1)	19
(Decrease) increase in cash and cash equivalents from discontinued operations	14	(94)
Cash and cash equivalents at beginning of period	656	459
Cash and cash equivalents at end of period	670	365
Leidos, Inc.
Cash flows from operations:
Net income	97	82
Income from discontinued operations	0	(18)
Adjustments to reconcile net income to net cash provided by operations:
Depreciation and amortization	17	24
Stock-based compensation	16	14
Asset impairment charges	0	69
Other	(6)	(5)
Change in assets and liabilities, net of effects of acquisitions and dispositions:
Receivables	(76)	63
Inventory, prepaid expenses and other current assets	(7)	(10)
Accounts payable and accrued liabilities	7	14
Accrued payroll and employee benefits	2	(20)
Deferred income taxes and income taxes receivable/payable	7	(88)
Other long-term assets/liabilities	1	(16)
Total cash flows provided by operating activities of continuing operations	58	109
Cash flows from investing activities:
Proceeds on obligations of Leidos Holdings, Inc.	6	17
Payments on obligations of Leidos Holdings, Inc.	(65)	(176)
Expenditures for property, plant and equipment	(7)	(8)
Payments on accrued purchase price related to prior acquisition	0	(13)
Net proceeds from sale of assets	3	5
Proceeds from disposition of business	23	0
Other	(1)	0
Total cash flows provided by (used in) investing activities of continuing operations	(41)	(175)
Cash flows from financing activities:
Payments of notes payable and long-term debt	(2)	(47)
Total cash flows used in financing activities of continuing operations	(2)	(47)
Increase (decrease) in cash and cash equivalents from continuing operations	15	(113)
Cash flows from discontinued operations:
Cash provided by operating activities of discontinued operations	0	13
Cash (used in) provided by investing activities of discontinued operations	(1)	6
(Decrease) increase in cash and cash equivalents from discontinued operations	(1)	19
(Decrease) increase in cash and cash equivalents from discontinued operations	14	(94)
Cash and cash equivalents at beginning of period	656	459
Cash and cash equivalents at end of period	$ 670	$ 365

Summary of Significant Accounti

Summary of Significant Accounting Policies	6 Months Ended
	Jul. 01, 2016
Significant Accounting Policies [Line Items]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Nature of Operations and Basis of Presentation Leidos Holdings, Inc. ("Leidos") is a holding company whose direct 100% -owned subsidiary is Leidos, Inc., an applied technology company focused on delivering services and solutions that leverage expertise in the national security, health and infrastructure markets. Leidos, Inc. provides these services and solutions to government and commercial customers, both domestically and internationally. These customers include agencies of the U.S. Department of Defense ("DoD"), the intelligence community, the U.S. Department of Homeland Security ("DHS") and other U.S. Government civil agencies, state and local government agencies and foreign governments. Unless indicated otherwise, references to the "Company," "we," "us" and "our" refer collectively to Leidos Holdings, Inc., Leidos, Inc., and its consolidated subsidiaries. On January 26, 2016, Leidos Holdings, Inc. entered into a definitive agreement with Lockheed Martin Corporation whereby the Information Systems & Global Solutions business ("IS&GS") of Lockheed Martin will be merged with a wholly-owned subsidiary of Leidos. See "Note 2–Lockheed Martin Transaction" for further information. The unaudited condensed consolidated financial statements of Leidos and Leidos, Inc. include the balances of its majority-owned and 100% -owned subsidiaries. Leidos does not have separate operations, assets or liabilities independent of Leidos, Inc., except for a note receivable from Leidos to Leidos, Inc. (the “related party note”), on which interest is recognized. From time to time, Leidos issues stock to employees of Leidos, Inc. and its subsidiaries, which is reflected in stockholders' equity in Leidos’ condensed consolidated balance sheets and results in an increase to the related party note. All intercompany transactions and balances have been eliminated in consolidation. The accompanying unaudited condensed financial information has been prepared in accordance with the rules of the U.S. Securities and Exchange Commission ("SEC") and accounting principles generally accepted in the United States of America ("GAAP"). Certain disclosures normally included in financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules. The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingencies at the date of the financial statements, as well as the reported amounts of revenues and expenses during the reporting periods. Management evaluates these estimates and assumptions on an ongoing basis, including those relating to rate reserves, allowances for doubtful accounts, inventories, fair value and impairment of intangible assets and goodwill, income taxes, estimated profitability of long-term contracts, pension benefits, stock-based compensation expense, contingencies and litigation. Estimates have been prepared by management on the basis of the most current and best available information; however, actual results could differ materially from those estimates. During the Company's first quarter ended April 1, 2016, the company adopted ASU 2015-03, Interest - Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs , resulting in a reclassification of deferred financing costs related to the Company's notes of $7 million from "Other assets" to "Notes payable and long-term debt, net of current portion" in the Company's condensed consolidated balance sheets as of January 1, 2016 (see "Accounting Standards Updates Adopted" below). In the opinion of management, the accompanying unaudited condensed consolidated financial statements reflect all adjustments, which consist of normal recurring adjustments, necessary for a fair presentation thereof. The results reported in these unaudited condensed consolidated financial statements are not necessarily indicative of the results that may be expected for the entire year. These unaudited condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and combined notes thereto included in the Company’s Transition Report on Form 10-K filed on February 26, 2016. Fair Value Measurements The accounting standard for fair value measurements establishes a three-tier value hierarchy, which prioritizes the inputs used in measuring fair value as follows: observable inputs such as quoted prices in active markets (Level 1); inputs other than quoted prices in active markets that are observable either directly or indirectly (Level 2); and unobservable inputs in which there is little or no market data, which requires the Company to develop its own assumptions (Level 3). The fair value of financial instruments is determined based on quoted market prices, if available, or management’s best estimate. It is management’s belief that the carrying amounts of the Company’s financial instruments, other than derivatives, which include cash equivalents, are reasonable estimates of their related fair values. The carrying value of accounts receivable, accounts payable, and accrued expenses approximate their fair values. The carrying value of the Company's notes receivable as of July 1, 2016 of $95 million approximates fair value as the stated interest rates within the agreements are consistent with the current market rates used in notes with similar terms in the market (Level 2 inputs). The fair value of long-term debt is determined based on current interest rates available for debt with terms and maturities similar to the Company’s existing debt arrangements (Level 2 inputs). As of July 1, 2016, the fair value of notes payable and long-term debt was $1.06 billion with the carrying value reported in the condensed consolidated balance sheets at cost of $1.09 billion . The Company’s cash equivalents were primarily comprised of investments in several large institutional money market funds and bank deposits, with original maturity of three months or less. There are immaterial restrictions on the withdrawal of the Company’s cash and cash equivalents of foreign currency due to exchange control regulations. The Company's cash equivalents are recorded at historical cost, which equals fair value based on quoted market prices (Level 1 input). The Company's financial instruments measured at fair value on a recurring basis using Level 2 inputs consisted of the Company's interest rate swaps on its $450 million fixed rate 4.45% notes maturing in December 2020 (see "Note 4–Derivative Instruments and Hedging Activities"). At July 1, 2016, the Company did not have any financial assets or liabilities measured at fair value on a recurring basis using Level 3 inputs. The Company’s non-financial instruments measured at fair value on a non-recurring basis include goodwill, indefinite-lived intangible assets and long-lived tangible assets. The valuation methods used to determine fair value require a significant degree of management judgment to determine the key assumptions. As such, the Company generally classifies non-financial instruments as either Level 2 or Level 3 fair value measurements. At July 1, 2016, the Company did not have any non-financial instruments measured at fair value on a non-recurring basis. Changes in Estimates on Contracts Changes in estimates related to certain types of contracts accounted for using the percentage of completion method of accounting are recognized in the period in which such changes are made for the inception-to-date effect of the changes. Changes in these estimates can routinely occur over the contract performance period for a variety of reasons, including changes in contract scope, contract cost estimates and estimated incentive or award fees. Favorable contract performance resulted in a net increase to income from continuing operations of $5 million and an increase of $0.04 per diluted share for the quarter ended July 1, 2016, and an increase to income from continuing operations of $13 million and an increase of $0.11 per diluted share for the six months ended July 1, 2016. Favorable contract performance resulted in a net increase to income from continuing operations of $5 million and an increase of $0.04 per diluted share for the quarter ended July 3, 2015, and an increase to income from continuing operations of $10 million and an increase of $0.08 per diluted share for the six months ended July 3, 2015. Supplementary Cash Flow Information Supplementary cash flow information, including non-cash investing and financing activities, for the periods presented was as follows: Six Months Ended July 1, July 3, (in millions) Accrued dividends declared $ — $ 24 Cash paid for interest $ 43 $ 33 Cash paid for income taxes, net of refunds (including discontinued operations) $ 38 $ 87 Accounting Standards Updates Adopted In April 2015, the Financial Accounting Standards Board ("FASB") issued ASU 2015-03, Interest - Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs . This update eliminates separate presentation for debt issuance costs as an asset and requires issuance costs to be reported in the balance sheet as a direct reduction to the face amount of the associated debt. The Company adopted this ASU on a retrospective basis during the Company's first quarter ended April 1, 2016. This resulted in a reclassification of deferred financing costs related to the Company's notes of $7 million from "Other assets" to "Notes payable and long-term debt, net of current portion" in the Company's condensed consolidated balance sheets as of January 1, 2016. In March 2016, the FASB issued ASU 2016-09 Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting. This update is effective for annual periods beginning after December 15, 2016 and interim periods within those annual periods, with early adoption permitted. Among other requirements in the new standard, the ASU requires that an entity, (i) recognize excess tax benefits and deficiencies related to employee share-based payment transactions as an income tax expense or benefit in the income statement rather than in equity; (ii) present the excess tax benefits as an operating activity on the statement of cash flows versus current guidance to present them as financing activities; and, (iii) elect to either recognize stock forfeitures as they occur or estimate them. The Company elected to early adopt the provisions of the ASU prospectively from January 2, 2016, including continuation of estimating forfeitures instead of recording them as they occur. Consequently, the Company recognized a $3 million and $7 million of discrete tax benefit for the quarter and six months ended July 1, 2016, respectively, and operating cash flows for the six months ended July 1, 2016 increased $7 million with a corresponding decrease to financing cash flows. Accounting Standards Updates Issued But Not Yet Adopted In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606) . This ASU affects any entity that either enters into contracts with customers to transfer goods or services or enters into contracts for the transfer of non-financial assets unless those contracts are within the scope of other standards (e.g. insurance contracts). This ASU will supersede all revenue recognition requirements in Topic 605, Revenue Recognition, and industry-specific guidance throughout the industry topics of the codification. The guidance's core principle is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. In applying the revenue principles, an entity will identify the contract(s) with a customer, identify the performance obligations, determine the transaction price, allocate the transaction price to the performance obligations and recognize revenue when the performance obligation is satisfied (either over time or at a point in time). The ASU further states that an entity should disclose sufficient information to enable users of financial statements to understand the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. In August 2015, the FASB issued ASU 2015-14, Revenue from Contracts with Customers (Topic 606): Deferral of the Effective Date , which approved a one-year deferral of the effective date of the ASU from the original effective date of annual reporting periods beginning after December 15, 2016, to annual reporting periods (including interim reporting periods) beginning after December 15, 2017, with an option for early adoption of the standard on the original effective date. Additionally, in March 2016, the FASB issued ASU 2016-08, Revenue from Contracts with Customers (Topic 606): Principal versus Agent Considerations (Reporting Revenue Gross versus Net) , which clarified the implementation guidance on principal versus agent considerations. In April 2016, the FASB issued ASU 2016-10, Revenue from Contracts with Customers (Topic 606): Identifying Performance Obligations and Licensing , that amended the revenue guidance on identifying performance obligations and accounting for licenses of intellectual property. In May 2016, the FASB issued ASU 2016-11 Revenue Recognition (Topic 605) and Derivatives and Hedging (Topic 805): Rescission of SEC Guidance Because of Accounting Standards Updates 2014-09 and 2014-16 Pursuant to Staff Announcements at the March 3, 2016 EITF Meeting , which rescinded from the FASB Accounting Standards Codification ("ASC") certain SEC paragraphs as a result of two SEC Staff Announcements. The FASB also issued ASU 2016-12 Revenue from Contracts with Customers (Topic 606): Narrow-Scope Improvements and Practical Expedients , which clarified guidance on assessment of collectibility, presentation of sale taxes, measurement of noncash consideration, and certain transition matters. The Company is still evaluating the impact that the provisions of ASU 2014-09 and related subsequent updates will have on the Company's condensed consolidated financial position, results of operations and cash flows. In January 2016, the FASB issued ASU 2016-01, Financial Instruments (Subtopic 825-10) , Recognition and Measurement of Financial Assets and Financial Liabilities , which makes several targeted changes to current GAAP regarding measurement and disclosure. The guidance is effective for the fiscal year beginning after December 15, 2017. The Company currently does not maintain a material portfolio of financial assets and liabilities which would be impacted by the codification but will continue to monitor the impact of the ASU through its effective date. In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) . This ASU will supersede the current lease guidance under ASC 840 and makes several changes, such as requiring an entity to recognize a right-of-use asset and corresponding lease obligation in the balance sheet, classified as financing or operating, as appropriate. The standard requires adoption under the modified retrospective approach and is effective for annual reporting periods beginning after December 15, 2018, including interim periods within those fiscal years. Early adoption is permitted. The Company is still evaluating the provisions of ASU 2016-02 and its impact on the Company's condensed consolidated financial position, results of operations and cash flows. In June 2016, the FASB issued ASU 2016-13, Financial Instruments - Credit Losses (Topic 326) , which among other changes, eliminates the requirement that a credit loss on a financial instrument be probable prior to recognition. The ASU will be effective for the Company for fiscal years beginning after December 15, 2019, with early adoption allowed for the year beginning after December 15, 2018. Elements of the Update pertaining to acquired loans and debt securities with deteriorated credit quality must be adopted prospectively, while other elements in the guidance should be adopted using a modified retrospective approach. The Company is currently evaluating the adoption approach and its impact on the Company's condensed consolidated financial position, results of operations and cash flows.
Leidos, Inc.
Significant Accounting Policies [Line Items]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Nature of Operations and Basis of Presentation Leidos Holdings, Inc. ("Leidos") is a holding company whose direct 100% -owned subsidiary is Leidos, Inc., an applied technology company focused on delivering services and solutions that leverage expertise in the national security, health and infrastructure markets. Leidos, Inc. provides these services and solutions to government and commercial customers, both domestically and internationally. These customers include agencies of the U.S. Department of Defense ("DoD"), the intelligence community, the U.S. Department of Homeland Security ("DHS") and other U.S. Government civil agencies, state and local government agencies and foreign governments. Unless indicated otherwise, references to the "Company," "we," "us" and "our" refer collectively to Leidos Holdings, Inc., Leidos, Inc., and its consolidated subsidiaries. On January 26, 2016, Leidos Holdings, Inc. entered into a definitive agreement with Lockheed Martin Corporation whereby the Information Systems & Global Solutions business ("IS&GS") of Lockheed Martin will be merged with a wholly-owned subsidiary of Leidos. See "Note 2–Lockheed Martin Transaction" for further information. The unaudited condensed consolidated financial statements of Leidos and Leidos, Inc. include the balances of its majority-owned and 100% -owned subsidiaries. Leidos does not have separate operations, assets or liabilities independent of Leidos, Inc., except for a note receivable from Leidos to Leidos, Inc. (the “related party note”), on which interest is recognized. From time to time, Leidos issues stock to employees of Leidos, Inc. and its subsidiaries, which is reflected in stockholders' equity in Leidos’ condensed consolidated balance sheets and results in an increase to the related party note. All intercompany transactions and balances have been eliminated in consolidation. The accompanying unaudited condensed financial information has been prepared in accordance with the rules of the U.S. Securities and Exchange Commission ("SEC") and accounting principles generally accepted in the United States of America ("GAAP"). Certain disclosures normally included in financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules. The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingencies at the date of the financial statements, as well as the reported amounts of revenues and expenses during the reporting periods. Management evaluates these estimates and assumptions on an ongoing basis, including those relating to rate reserves, allowances for doubtful accounts, inventories, fair value and impairment of intangible assets and goodwill, income taxes, estimated profitability of long-term contracts, pension benefits, stock-based compensation expense, contingencies and litigation. Estimates have been prepared by management on the basis of the most current and best available information; however, actual results could differ materially from those estimates. During the Company's first quarter ended April 1, 2016, the company adopted ASU 2015-03, Interest - Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs , resulting in a reclassification of deferred financing costs related to the Company's notes of $7 million from "Other assets" to "Notes payable and long-term debt, net of current portion" in the Company's condensed consolidated balance sheets as of January 1, 2016 (see "Accounting Standards Updates Adopted" below). In the opinion of management, the accompanying unaudited condensed consolidated financial statements reflect all adjustments, which consist of normal recurring adjustments, necessary for a fair presentation thereof. The results reported in these unaudited condensed consolidated financial statements are not necessarily indicative of the results that may be expected for the entire year. These unaudited condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and combined notes thereto included in the Company’s Transition Report on Form 10-K filed on February 26, 2016. Fair Value Measurements The accounting standard for fair value measurements establishes a three-tier value hierarchy, which prioritizes the inputs used in measuring fair value as follows: observable inputs such as quoted prices in active markets (Level 1); inputs other than quoted prices in active markets that are observable either directly or indirectly (Level 2); and unobservable inputs in which there is little or no market data, which requires the Company to develop its own assumptions (Level 3). The fair value of financial instruments is determined based on quoted market prices, if available, or management’s best estimate. It is management’s belief that the carrying amounts of the Company’s financial instruments, other than derivatives, which include cash equivalents, are reasonable estimates of their related fair values. The carrying value of accounts receivable, accounts payable, and accrued expenses approximate their fair values. The carrying value of the Company's notes receivable as of July 1, 2016 of $95 million approximates fair value as the stated interest rates within the agreements are consistent with the current market rates used in notes with similar terms in the market (Level 2 inputs). The fair value of long-term debt is determined based on current interest rates available for debt with terms and maturities similar to the Company’s existing debt arrangements (Level 2 inputs). As of July 1, 2016, the fair value of notes payable and long-term debt was $1.06 billion with the carrying value reported in the condensed consolidated balance sheets at cost of $1.09 billion . The Company’s cash equivalents were primarily comprised of investments in several large institutional money market funds and bank deposits, with original maturity of three months or less. There are immaterial restrictions on the withdrawal of the Company’s cash and cash equivalents of foreign currency due to exchange control regulations. The Company's cash equivalents are recorded at historical cost, which equals fair value based on quoted market prices (Level 1 input). The Company's financial instruments measured at fair value on a recurring basis using Level 2 inputs consisted of the Company's interest rate swaps on its $450 million fixed rate 4.45% notes maturing in December 2020 (see "Note 4–Derivative Instruments and Hedging Activities"). At July 1, 2016, the Company did not have any financial assets or liabilities measured at fair value on a recurring basis using Level 3 inputs. The Company’s non-financial instruments measured at fair value on a non-recurring basis include goodwill, indefinite-lived intangible assets and long-lived tangible assets. The valuation methods used to determine fair value require a significant degree of management judgment to determine the key assumptions. As such, the Company generally classifies non-financial instruments as either Level 2 or Level 3 fair value measurements. At July 1, 2016, the Company did not have any non-financial instruments measured at fair value on a non-recurring basis. Changes in Estimates on Contracts Changes in estimates related to certain types of contracts accounted for using the percentage of completion method of accounting are recognized in the period in which such changes are made for the inception-to-date effect of the changes. Changes in these estimates can routinely occur over the contract performance period for a variety of reasons, including changes in contract scope, contract cost estimates and estimated incentive or award fees. Favorable contract performance resulted in a net increase to income from continuing operations of $5 million and an increase of $0.04 per diluted share for the quarter ended July 1, 2016, and an increase to income from continuing operations of $13 million and an increase of $0.11 per diluted share for the six months ended July 1, 2016. Favorable contract performance resulted in a net increase to income from continuing operations of $5 million and an increase of $0.04 per diluted share for the quarter ended July 3, 2015, and an increase to income from continuing operations of $10 million and an increase of $0.08 per diluted share for the six months ended July 3, 2015. Supplementary Cash Flow Information Supplementary cash flow information, including non-cash investing and financing activities, for the periods presented was as follows: Six Months Ended July 1, July 3, (in millions) Accrued dividends declared $ — $ 24 Cash paid for interest $ 43 $ 33 Cash paid for income taxes, net of refunds (including discontinued operations) $ 38 $ 87 Accounting Standards Updates Adopted In April 2015, the Financial Accounting Standards Board ("FASB") issued ASU 2015-03, Interest - Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs . This update eliminates separate presentation for debt issuance costs as an asset and requires issuance costs to be reported in the balance sheet as a direct reduction to the face amount of the associated debt. The Company adopted this ASU on a retrospective basis during the Company's first quarter ended April 1, 2016. This resulted in a reclassification of deferred financing costs related to the Company's notes of $7 million from "Other assets" to "Notes payable and long-term debt, net of current portion" in the Company's condensed consolidated balance sheets as of January 1, 2016. In March 2016, the FASB issued ASU 2016-09 Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting. This update is effective for annual periods beginning after December 15, 2016 and interim periods within those annual periods, with early adoption permitted. Among other requirements in the new standard, the ASU requires that an entity, (i) recognize excess tax benefits and deficiencies related to employee share-based payment transactions as an income tax expense or benefit in the income statement rather than in equity; (ii) present the excess tax benefits as an operating activity on the statement of cash flows versus current guidance to present them as financing activities; and, (iii) elect to either recognize stock forfeitures as they occur or estimate them. The Company elected to early adopt the provisions of the ASU prospectively from January 2, 2016, including continuation of estimating forfeitures instead of recording them as they occur. Consequently, the Company recognized a $3 million and $7 million of discrete tax benefit for the quarter and six months ended July 1, 2016, respectively, and operating cash flows for the six months ended July 1, 2016 increased $7 million with a corresponding decrease to financing cash flows. Accounting Standards Updates Issued But Not Yet Adopted In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606) . This ASU affects any entity that either enters into contracts with customers to transfer goods or services or enters into contracts for the transfer of non-financial assets unless those contracts are within the scope of other standards (e.g. insurance contracts). This ASU will supersede all revenue recognition requirements in Topic 605, Revenue Recognition, and industry-specific guidance throughout the industry topics of the codification. The guidance's core principle is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. In applying the revenue principles, an entity will identify the contract(s) with a customer, identify the performance obligations, determine the transaction price, allocate the transaction price to the performance obligations and recognize revenue when the performance obligation is satisfied (either over time or at a point in time). The ASU further states that an entity should disclose sufficient information to enable users of financial statements to understand the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. In August 2015, the FASB issued ASU 2015-14, Revenue from Contracts with Customers (Topic 606): Deferral of the Effective Date , which approved a one-year deferral of the effective date of the ASU from the original effective date of annual reporting periods beginning after December 15, 2016, to annual reporting periods (including interim reporting periods) beginning after December 15, 2017, with an option for early adoption of the standard on the original effective date. Additionally, in March 2016, the FASB issued ASU 2016-08, Revenue from Contracts with Customers (Topic 606): Principal versus Agent Considerations (Reporting Revenue Gross versus Net) , which clarified the implementation guidance on principal versus agent considerations. In April 2016, the FASB issued ASU 2016-10, Revenue from Contracts with Customers (Topic 606): Identifying Performance Obligations and Licensing , that amended the revenue guidance on identifying performance obligations and accounting for licenses of intellectual property. In May 2016, the FASB issued ASU 2016-11 Revenue Recognition (Topic 605) and Derivatives and Hedging (Topic 805): Rescission of SEC Guidance Because of Accounting Standards Updates 2014-09 and 2014-16 Pursuant to Staff Announcements at the March 3, 2016 EITF Meeting , which rescinded from the FASB Accounting Standards Codification ("ASC") certain SEC paragraphs as a result of two SEC Staff Announcements. The FASB also issued ASU 2016-12 Revenue from Contracts with Customers (Topic 606): Narrow-Scope Improvements and Practical Expedients , which clarified guidance on assessment of collectibility, presentation of sale taxes, measurement of noncash consideration, and certain transition matters. The Company is still evaluating the impact that the provisions of ASU 2014-09 and related subsequent updates will have on the Company's condensed consolidated financial position, results of operations and cash flows. In January 2016, the FASB issued ASU 2016-01, Financial Instruments (Subtopic 825-10) , Recognition and Measurement of Financial Assets and Financial Liabilities , which makes several targeted changes to current GAAP regarding measurement and disclosure. The guidance is effective for the fiscal year beginning after December 15, 2017. The Company currently does not maintain a material portfolio of financial assets and liabilities which would be impacted by the codification but will continue to monitor the impact of the ASU through its effective date. In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) . This ASU will supersede the current lease guidance under ASC 840 and makes several changes, such as requiring an entity to recognize a right-of-use asset and corresponding lease obligation in the balance sheet, classified as financing or operating, as appropriate. The standard requires adoption under the modified retrospective approach and is effective for annual reporting periods beginning after December 15, 2018, including interim periods within those fiscal years. Early adoption is permitted. The Company is still evaluating the provisions of ASU 2016-02 and its impact on the Company's condensed consolidated financial position, results of operations and cash flows. In June 2016, the FASB issued ASU 2016-13, Financial Instruments - Credit Losses (Topic 326) , which among other changes, eliminates the requirement that a credit loss on a financial instrument be probable prior to recognition. The ASU will be effective for the Company for fiscal years beginning after December 15, 2019, with early adoption allowed for the year beginning after December 15, 2018. Elements of the Update pertaining to acquired loans and debt securities with deteriorated credit quality must be adopted prospectively, while other elements in the guidance should be adopted using a modified retrospective approach. The Company is currently evaluating the adoption approach and its impact on the Company's condensed consolidated financial position, results of operations and cash flows.

Lockheed Martin Transaction

Lockheed Martin Transaction	6 Months Ended
	Jul. 01, 2016
Business Acquisition [Line Items]
Lockheed Martin Transaction	Lockheed Martin Transaction On January 26, 2016, Leidos announced that it had entered into a definitive agreement (as amended, the "Merger Agreement"), dated January 26, 2016, with Lockheed Martin Corporation ("Lockheed Martin"); Abacus Innovations Corporation, a Delaware corporation and a wholly owned subsidiary of Lockheed Martin ("Splitco"); and Lion Merger Co., a Delaware corporation and a wholly owned subsidiary of Leidos ("Merger Sub"), pursuant to which Leidos will combine with Lockheed Martin’s realigned Information Systems & Global Solutions business ("IS&GS") (collectively, the "ISGS Business") in a Reverse Morris Trust transaction. In connection with the Merger Agreement, Lockheed Martin and Splitco entered into a Separation Agreement dated January 26, 2016 (the "Separation Agreement"), pursuant to which Lockheed Martin will separate the ISGS Business from Lockheed Martin and transfer the ISGS Business to Splitco. The transactions contemplated by the Merger Agreement and the Separation Agreement are referred to herein as the “Transactions.” In the Transactions, among other steps, (i) Lockheed Martin will transfer the ISGS Business to Splitco; (ii) Lockheed Martin will offer to Lockheed Martin stockholders the right to exchange all or a portion of their shares of Lockheed Martin common stock for shares of Splitco common stock by way of an exchange offer and, with respect to any shares of Splitco common stock that are not subscribed for in the exchange offer, a pro rata dividend to the Lockheed Martin stockholders (the "Distribution"); and (iii) Merger Sub will merge with and into Splitco, with Splitco as the surviving corporation (the "Merger") and a wholly owned subsidiary of Leidos. Upon consummation of the Transactions, Lockheed Martin shareholders will receive approximately 77 million shares of Leidos common stock, which represent approximately 50.5% of the outstanding shares of Leidos common stock. Leidos’ existing stockholders will continue to hold the remaining approximately 49.5% of the outstanding shares of Leidos common stock. Prior to the Distribution, Splitco will incur third-party debt financing in an aggregate principal amount of approximately $1.8 billion (the “Splitco Debt”) and immediately thereafter, Lockheed Martin will transfer the Splitco Assets to Splitco and Splitco will make a special cash payment to Lockheed Martin of $1.8 billion , subject to adjustment based on Splitco’s cash and working capital at the time of the Distribution (the "Special Cash Payment"). The Merger Agreement also provides that, prior to the Merger and subject to applicable law, Leidos expects to declare a special dividend of $13.64 per share to its stockholders, conditioned on completion of the Merger. The special dividend will be funded by a combination of new borrowings and cash on hand. On January 26, 2016, the Company and certain financial institutions executed commitment letters pursuant to which the financial institutions have agreed to provide financing to Splitco to finance the amount of the Splitco Debt and to provide financing to Leidos to fund the special dividend to its stockholders. Following the consummation of the Transactions, Leidos and Splitco, which would then be a wholly-owned subsidiary of Leidos, will have incurred approximately $2.5 billion of new indebtedness in the form of term loans. In connection with the Transactions, the Company will enter into a new $750 million senior revolving credit facility, which will replace its existing revolving credit facility. The Company expects to incur significant integration and transaction costs in connection with the Transactions and related transactions during the remainder of fiscal 2016 and in fiscal 2017. Completion of the Transactions is expected in the latter half of 2016. Consummation of the Transactions is subject to customary closing conditions, including, among others, (1) the consummation of the Separation and the Distribution in accordance with the Separation Agreement; (2) the expiration or termination of any applicable waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended (which period has expired), and the receipt of any necessary regulatory approvals in other jurisdictions; (3) the effectiveness of registration statements initially filed with the SEC on April 18, 2016 (which registration statements became effective on July 11, 2016); (4) the approval by Leidos’ stockholders of the issuance of Leidos common stock in the Merger (the "Share Issuance"); (5) the receipt by Lockheed Martin of an opinion of tax counsel as to the tax-free nature of the Distribution to Lockheed Martin and its stockholders and the receipt by Leidos and Lockheed Martin of opinions of their respective tax counsel regarding the treatment of the Merger as a "reorganization" for U.S. federal income tax purposes; and (6) the receipt by Leidos, Lockheed Martin and Splitco of solvency opinions customary in transactions of this type. There can be no assurance the Transactions will be consummated. The Merger Agreement contains certain termination rights for both Lockheed Martin and Leidos and further provides that Leidos must pay to Lockheed Martin a termination fee of $150 million under certain circumstances. In addition, if the Merger Agreement is terminated because approval is not obtained at the Leidos stockholder meeting called for such purpose, Leidos has agreed to reimburse Lockheed Martin for its expenses up to a maximum amount of $37.5 million . In connection with the Transactions, certain additional agreements have been or will be entered into, including, among others an employee matters agreement, a tax matters agreement, transition services agreements, an intellectual property matters agreement, agreements relating to certain government contracts matters, supply agreements and certain real estate related agreements. During the quarter and six months ended July 1, 2016, the Company incurred the following acquisition and integration costs in connection with the Transactions: Three Months Ended Six Months Ended July 1, July 1, (in millions) Strategic acquisition and integration advisory services $ 7 $ 10 Legal and accounting services 5 10 Other integration costs 3 4 Total acquisition and integration costs $ 15 $ 24
Leidos, Inc.
Business Acquisition [Line Items]
Lockheed Martin Transaction	Lockheed Martin Transaction On January 26, 2016, Leidos announced that it had entered into a definitive agreement (as amended, the "Merger Agreement"), dated January 26, 2016, with Lockheed Martin Corporation ("Lockheed Martin"); Abacus Innovations Corporation, a Delaware corporation and a wholly owned subsidiary of Lockheed Martin ("Splitco"); and Lion Merger Co., a Delaware corporation and a wholly owned subsidiary of Leidos ("Merger Sub"), pursuant to which Leidos will combine with Lockheed Martin’s realigned Information Systems & Global Solutions business ("IS&GS") (collectively, the "ISGS Business") in a Reverse Morris Trust transaction. In connection with the Merger Agreement, Lockheed Martin and Splitco entered into a Separation Agreement dated January 26, 2016 (the "Separation Agreement"), pursuant to which Lockheed Martin will separate the ISGS Business from Lockheed Martin and transfer the ISGS Business to Splitco. The transactions contemplated by the Merger Agreement and the Separation Agreement are referred to herein as the “Transactions.” In the Transactions, among other steps, (i) Lockheed Martin will transfer the ISGS Business to Splitco; (ii) Lockheed Martin will offer to Lockheed Martin stockholders the right to exchange all or a portion of their shares of Lockheed Martin common stock for shares of Splitco common stock by way of an exchange offer and, with respect to any shares of Splitco common stock that are not subscribed for in the exchange offer, a pro rata dividend to the Lockheed Martin stockholders (the "Distribution"); and (iii) Merger Sub will merge with and into Splitco, with Splitco as the surviving corporation (the "Merger") and a wholly owned subsidiary of Leidos. Upon consummation of the Transactions, Lockheed Martin shareholders will receive approximately 77 million shares of Leidos common stock, which represent approximately 50.5% of the outstanding shares of Leidos common stock. Leidos’ existing stockholders will continue to hold the remaining approximately 49.5% of the outstanding shares of Leidos common stock. Prior to the Distribution, Splitco will incur third-party debt financing in an aggregate principal amount of approximately $1.8 billion (the “Splitco Debt”) and immediately thereafter, Lockheed Martin will transfer the Splitco Assets to Splitco and Splitco will make a special cash payment to Lockheed Martin of $1.8 billion , subject to adjustment based on Splitco’s cash and working capital at the time of the Distribution (the "Special Cash Payment"). The Merger Agreement also provides that, prior to the Merger and subject to applicable law, Leidos expects to declare a special dividend of $13.64 per share to its stockholders, conditioned on completion of the Merger. The special dividend will be funded by a combination of new borrowings and cash on hand. On January 26, 2016, the Company and certain financial institutions executed commitment letters pursuant to which the financial institutions have agreed to provide financing to Splitco to finance the amount of the Splitco Debt and to provide financing to Leidos to fund the special dividend to its stockholders. Following the consummation of the Transactions, Leidos and Splitco, which would then be a wholly-owned subsidiary of Leidos, will have incurred approximately $2.5 billion of new indebtedness in the form of term loans. In connection with the Transactions, the Company will enter into a new $750 million senior revolving credit facility, which will replace its existing revolving credit facility. The Company expects to incur significant integration and transaction costs in connection with the Transactions and related transactions during the remainder of fiscal 2016 and in fiscal 2017. Completion of the Transactions is expected in the latter half of 2016. Consummation of the Transactions is subject to customary closing conditions, including, among others, (1) the consummation of the Separation and the Distribution in accordance with the Separation Agreement; (2) the expiration or termination of any applicable waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended (which period has expired), and the receipt of any necessary regulatory approvals in other jurisdictions; (3) the effectiveness of registration statements initially filed with the SEC on April 18, 2016 (which registration statements became effective on July 11, 2016); (4) the approval by Leidos’ stockholders of the issuance of Leidos common stock in the Merger (the "Share Issuance"); (5) the receipt by Lockheed Martin of an opinion of tax counsel as to the tax-free nature of the Distribution to Lockheed Martin and its stockholders and the receipt by Leidos and Lockheed Martin of opinions of their respective tax counsel regarding the treatment of the Merger as a "reorganization" for U.S. federal income tax purposes; and (6) the receipt by Leidos, Lockheed Martin and Splitco of solvency opinions customary in transactions of this type. There can be no assurance the Transactions will be consummated. The Merger Agreement contains certain termination rights for both Lockheed Martin and Leidos and further provides that Leidos must pay to Lockheed Martin a termination fee of $150 million under certain circumstances. In addition, if the Merger Agreement is terminated because approval is not obtained at the Leidos stockholder meeting called for such purpose, Leidos has agreed to reimburse Lockheed Martin for its expenses up to a maximum amount of $37.5 million . In connection with the Transactions, certain additional agreements have been or will be entered into, including, among others an employee matters agreement, a tax matters agreement, transition services agreements, an intellectual property matters agreement, agreements relating to certain government contracts matters, supply agreements and certain real estate related agreements. During the quarter and six months ended July 1, 2016, the Company incurred the following acquisition and integration costs in connection with the Transactions: Three Months Ended Six Months Ended July 1, July 1, (in millions) Strategic acquisition and integration advisory services $ 7 $ 10 Legal and accounting services 5 10 Other integration costs 3 4 Total acquisition and integration costs $ 15 $ 24

Divestitures

Divestitures	6 Months Ended
	Jul. 01, 2016
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Divestitures	Divestitures Dispositions In February 2015, the Company committed to a plan to dispose of a business, historically included within the Company’s Health and Infrastructure Sector segment, that is primarily focused on providing design, build and heavy construction engineering services. The sale was completed on April 15, 2016, with net cash proceeds received of $23 million , resulting in a preliminary gain on sale of $3 million , subject to certain customary working capital adjustments. The Company incurred and paid $1 million of selling costs related to the transaction. The major classes of assets and liabilities sold include $73 million of accounts receivable, net, $3 million of other non current assets, and $63 million of accounts payable and accrued liabilities. The Company has issued certain guarantees to the buyer related to the performance on a contract sold and the collectibility of accounts receivable transferred and accordingly has recorded a $6 million liability which reduced the gain on sale. In addition, the Company is eligible to receive contingent earn-out payments not to exceed $2 million , subject to the achievement of certain income targets. The Company will recognize any consideration for the contingent earn-out payments when received. The Company recorded the preliminary gain on sale in "Other (expense) income, net" in the Company's condensed consolidated statements of income. Plainfield Renewable Energy Holdings LLC In March 2015, the Company entered into a definitive Membership Interest Purchase Agreement (the "Agreement") to sell 100% of the equity membership interest in Plainfield Renewable Energy Holdings, LLC ("Plainfield") resulting in an approximate $40 million impairment charge in the Company's Health and Infrastructure Sector segment in January 2015 to adjust the carrying values of Plainfield's assets to their fair values based on the estimated selling price of the business (Level 1). During the quarter ended July 3, 2015, further negotiations occurred related to the sale of Plainfield resulting in an approximate $29 million impairment charge. The Company adjusted the carrying values of Plainfield's assets to their fair values based on the estimated selling price of the business pursuant to the terms of the Agreement that was amended on July 17, 2015 (Level 1). The Company recorded these tangible asset impairment charges in "Asset impairment charges" in the Company’s condensed consolidated statements of income. On July 24, 2015, the Company completed the sale of its equity interests in Plainfield for an aggregate consideration of $102 million , subject to certain adjustments, and contingent earn-out payments. The consideration received by the Company at closing consisted of a cash payment of approximately $29 million and a secured promissory note for approximately $73 million , net of discount (the “Note”). The Note allows for a six-month deferral of certain payments due on January 2016 and July 2016. In January 2016 and July 2016, the buyer elected to defer the interest payment due to the next payment due date in July 2016 and January 2017, respectively. As of July 1, 2016, the Company expects the Note to be collectible in full. Discontinued Operations Separation of New SAIC The Company completed the spin-off of New SAIC on September 27, 2013. New SAIC was a subsidiary of Leidos prior to the separation date. The spin-off was consummated pursuant to the terms of a Distribution Agreement and several other agreements entered into between the Company and New SAIC on September 25, 2013. These agreements govern the treatment of existing contracts, proposals and teaming arrangements where New SAIC will jointly perform work after separation on Leidos contracts. The operating results of the Company's discontinued operations for the periods presented were as follows: Three Months Ended Six Months Ended July 1, July 3, July 1, July 3, (in millions) Revenues $ 4 $ 6 $ 7 $ 14 Costs and expenses: — Cost of revenues 4 6 7 12 Selling, general and administrative expenses — — — 4 Operating loss $ — $ — $ — $ (2 ) Non-operating income $ — $ — $ — $ 2
Leidos, Inc.
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Divestitures	Divestitures Dispositions In February 2015, the Company committed to a plan to dispose of a business, historically included within the Company’s Health and Infrastructure Sector segment, that is primarily focused on providing design, build and heavy construction engineering services. The sale was completed on April 15, 2016, with net cash proceeds received of $23 million , resulting in a preliminary gain on sale of $3 million , subject to certain customary working capital adjustments. The Company incurred and paid $1 million of selling costs related to the transaction. The major classes of assets and liabilities sold include $73 million of accounts receivable, net, $3 million of other non current assets, and $63 million of accounts payable and accrued liabilities. The Company has issued certain guarantees to the buyer related to the performance on a contract sold and the collectibility of accounts receivable transferred and accordingly has recorded a $6 million liability which reduced the gain on sale. In addition, the Company is eligible to receive contingent earn-out payments not to exceed $2 million , subject to the achievement of certain income targets. The Company will recognize any consideration for the contingent earn-out payments when received. The Company recorded the preliminary gain on sale in "Other (expense) income, net" in the Company's condensed consolidated statements of income. Plainfield Renewable Energy Holdings LLC In March 2015, the Company entered into a definitive Membership Interest Purchase Agreement (the "Agreement") to sell 100% of the equity membership interest in Plainfield Renewable Energy Holdings, LLC ("Plainfield") resulting in an approximate $40 million impairment charge in the Company's Health and Infrastructure Sector segment in January 2015 to adjust the carrying values of Plainfield's assets to their fair values based on the estimated selling price of the business (Level 1). During the quarter ended July 3, 2015, further negotiations occurred related to the sale of Plainfield resulting in an approximate $29 million impairment charge. The Company adjusted the carrying values of Plainfield's assets to their fair values based on the estimated selling price of the business pursuant to the terms of the Agreement that was amended on July 17, 2015 (Level 1). The Company recorded these tangible asset impairment charges in "Asset impairment charges" in the Company’s condensed consolidated statements of income. On July 24, 2015, the Company completed the sale of its equity interests in Plainfield for an aggregate consideration of $102 million , subject to certain adjustments, and contingent earn-out payments. The consideration received by the Company at closing consisted of a cash payment of approximately $29 million and a secured promissory note for approximately $73 million , net of discount (the “Note”). The Note allows for a six-month deferral of certain payments due on January 2016 and July 2016. In January 2016 and July 2016, the buyer elected to defer the interest payment due to the next payment due date in July 2016 and January 2017, respectively. As of July 1, 2016, the Company expects the Note to be collectible in full. Discontinued Operations Separation of New SAIC The Company completed the spin-off of New SAIC on September 27, 2013. New SAIC was a subsidiary of Leidos prior to the separation date. The spin-off was consummated pursuant to the terms of a Distribution Agreement and several other agreements entered into between the Company and New SAIC on September 25, 2013. These agreements govern the treatment of existing contracts, proposals and teaming arrangements where New SAIC will jointly perform work after separation on Leidos contracts. The operating results of the Company's discontinued operations for the periods presented were as follows: Three Months Ended Six Months Ended July 1, July 3, July 1, July 3, (in millions) Revenues $ 4 $ 6 $ 7 $ 14 Costs and expenses: — Cost of revenues 4 6 7 12 Selling, general and administrative expenses — — — 4 Operating loss $ — $ — $ — $ (2 ) Non-operating income $ — $ — $ — $ 2

Derivative Instruments and Hedg

Derivative Instruments and Hedging Activities	6 Months Ended
	Jul. 01, 2016
Derivative [Line Items]
Derivative Instruments and Hedging Activities	Derivative Instruments and Hedging Activities The Company uses a risk management policy to assess and manage cash flow and fair value exposure through the use of derivative instruments. The Company uses interest rate swaps to hedge its fixed rate debt against changes in fair value due to variability in interest rates. The Company does not hold derivative instruments for trading or speculative purposes. In September 2014, the Company entered into interest rate swap agreements to hedge the fair value with respect to all of the $450 million aggregate principal outstanding on the Company's fixed rate 4.45% notes maturing in December 2020 (the “Notes”). The objective of these instruments is to hedge the Notes against changes in fair value due to the variability in the six-month LIBOR rate (the benchmark interest rate), which effectively converted the debt into floating interest rate debt. Under the terms of the interest rate swap agreements, the Company will receive semi-annual interest payments at the coupon rate of 4.45% and will pay variable interest based on the six-month LIBOR rate. The counterparties to these agreements are financial institutions. The interest rate swaps were accounted for as a fair value hedge of the Notes and qualified for the shortcut method of hedge accounting, which allows for the assumption of no ineffectiveness reported in earnings. The resulting changes in the fair value of the interest rate swaps are fully offset by the changes in the fair value of the underlying debt (the hedged item). The fair value of the interest rate swaps is determined based on observed values for underlying interest rates on the LIBOR yield curve (Level 2). The fair value of the Notes is stated at an amount that reflects changes in the benchmark interest rate, the six-month LIBOR rate, subsequent to the inception of the interest rate swaps through the reporting date. The fair value adjustment to the interest rate swap and the underlying debt was $4 million and $15 million for the quarter and six months ended July 1, 2016, respectively. The cash flows associated with the interest rate swaps are classified as operating activities in the condensed consolidated statements of cash flows. The fair value of the interest rate swaps and their impact on the related fair value of the debt in the condensed consolidated balance sheets is as follows: Interest rate swaps Hedged items Balance sheet line item July 1, January 1, Balance sheet line item July 1, January 1, (in millions) Other assets $ 23 $ 8 Notes payable and long-term debt, net of current portion $ 23 $ 8
Leidos, Inc.
Derivative [Line Items]
Derivative Instruments and Hedging Activities	Derivative Instruments and Hedging Activities The Company uses a risk management policy to assess and manage cash flow and fair value exposure through the use of derivative instruments. The Company uses interest rate swaps to hedge its fixed rate debt against changes in fair value due to variability in interest rates. The Company does not hold derivative instruments for trading or speculative purposes. In September 2014, the Company entered into interest rate swap agreements to hedge the fair value with respect to all of the $450 million aggregate principal outstanding on the Company's fixed rate 4.45% notes maturing in December 2020 (the “Notes”). The objective of these instruments is to hedge the Notes against changes in fair value due to the variability in the six-month LIBOR rate (the benchmark interest rate), which effectively converted the debt into floating interest rate debt. Under the terms of the interest rate swap agreements, the Company will receive semi-annual interest payments at the coupon rate of 4.45% and will pay variable interest based on the six-month LIBOR rate. The counterparties to these agreements are financial institutions. The interest rate swaps were accounted for as a fair value hedge of the Notes and qualified for the shortcut method of hedge accounting, which allows for the assumption of no ineffectiveness reported in earnings. The resulting changes in the fair value of the interest rate swaps are fully offset by the changes in the fair value of the underlying debt (the hedged item). The fair value of the interest rate swaps is determined based on observed values for underlying interest rates on the LIBOR yield curve (Level 2). The fair value of the Notes is stated at an amount that reflects changes in the benchmark interest rate, the six-month LIBOR rate, subsequent to the inception of the interest rate swaps through the reporting date. The fair value adjustment to the interest rate swap and the underlying debt was $4 million and $15 million for the quarter and six months ended July 1, 2016, respectively. The cash flows associated with the interest rate swaps are classified as operating activities in the condensed consolidated statements of cash flows. The fair value of the interest rate swaps and their impact on the related fair value of the debt in the condensed consolidated balance sheets is as follows: Interest rate swaps Hedged items Balance sheet line item July 1, January 1, Balance sheet line item July 1, January 1, (in millions) Other assets $ 23 $ 8 Notes payable and long-term debt, net of current portion $ 23 $ 8

Related Party Transactions

Related Party Transactions	6 Months Ended
	Jul. 01, 2016
Related Party Transaction [Line Items]
Related Party Transactions	Related Party Transactions Leidos, Inc. has fully and unconditionally guaranteed the obligations of Leidos under its $450 million 4.45% notes and $300 million 5.95% notes. These notes have been reflected as debt of Leidos, Inc. in these condensed consolidated financial statements. Leidos, Inc. has fully and unconditionally guaranteed any borrowings under Leidos’ amended and restated revolving credit facility maturing in 2018 . Leidos has fully and unconditionally guaranteed the obligations of Leidos, Inc. under its $300 million 5.50% notes and $250 million 7.13% notes. Leidos and Leidos, Inc. have a related party note in connection with a loan of cash between the entities, which is adjusted to reflect issuances of stock by Leidos to employees of Leidos, Inc. and its subsidiaries and Leidos, Inc.’s payment of certain obligations on behalf of Leidos, including dividends. The related party note bears interest based on LIBOR plus a market-based premium. Portions of the related party note may be repaid at any time. The note automatically extends for successive one -year periods unless either Leidos or Leidos, Inc. provides prior notice to the other party. The note receivable also includes the distribution of the assets and liabilities of New SAIC that occurred at the time of the separation in September 2013. As of July 1, 2016, the note receivable from Leidos Holdings, Inc. to Leidos, Inc. was $1.6 billion .
Leidos, Inc.
Related Party Transaction [Line Items]
Related Party Transactions	Related Party Transactions Leidos, Inc. has fully and unconditionally guaranteed the obligations of Leidos under its $450 million 4.45% notes and $300 million 5.95% notes. These notes have been reflected as debt of Leidos, Inc. in these condensed consolidated financial statements. Leidos, Inc. has fully and unconditionally guaranteed any borrowings under Leidos’ amended and restated revolving credit facility maturing in 2018 . Leidos has fully and unconditionally guaranteed the obligations of Leidos, Inc. under its $300 million 5.50% notes and $250 million 7.13% notes. Leidos and Leidos, Inc. have a related party note in connection with a loan of cash between the entities, which is adjusted to reflect issuances of stock by Leidos to employees of Leidos, Inc. and its subsidiaries and Leidos, Inc.’s payment of certain obligations on behalf of Leidos, including dividends. The related party note bears interest based on LIBOR plus a market-based premium. Portions of the related party note may be repaid at any time. The note automatically extends for successive one -year periods unless either Leidos or Leidos, Inc. provides prior notice to the other party. The note receivable also includes the distribution of the assets and liabilities of New SAIC that occurred at the time of the separation in September 2013. As of July 1, 2016, the note receivable from Leidos Holdings, Inc. to Leidos, Inc. was $1.6 billion .

Accumulated Other Comprehensive

Accumulated Other Comprehensive Loss	6 Months Ended
	Jul. 01, 2016
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Loss	Accumulated Other Comprehensive Loss The components of accumulated other comprehensive loss were as follows: July 1, January 1, (in millions) Foreign currency translation adjustments, net of taxes of $(3) million as of July 1, 2016 $ 4 $ — Unrecognized net loss on settled derivative instruments associated with outstanding debt, net of taxes of $3 million as of July 1, 2016, and January 1, 2016 (4 ) (4 ) Unrecognized net loss on defined benefit plan, net of taxes of $2 million and $3 million as of July 1, 2016, and January 1, 2016, respectively (4 ) (4 ) Total accumulated other comprehensive loss, net of taxes of $2 million and $6 million as of July 1, 2016, and January 1, 2016, respectively $ (4 ) $ (8 ) Reclassifications from other comprehensive income to net income relating to unrecognized net gain (loss) on settled derivative instruments associated with outstanding debt for the quarter and six months ended July 1, 2016, and July 3, 2015, were not material. There were no reclassifications from other comprehensive income to net income relating to foreign currency translation adjustments or unrecognized net gain (loss) on defined benefit plan during the quarter and six months ended July 1, 2016, and July 3, 2015. Reclassifications for unrecognized net gain (loss) on settled derivative instruments associated with outstanding debt are recorded in "Interest expense, net" in the Company's condensed consolidated statements of income.
Leidos, Inc.
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Loss	Accumulated Other Comprehensive Loss The components of accumulated other comprehensive loss were as follows: July 1, January 1, (in millions) Foreign currency translation adjustments, net of taxes of $(3) million as of July 1, 2016 $ 4 $ — Unrecognized net loss on settled derivative instruments associated with outstanding debt, net of taxes of $3 million as of July 1, 2016, and January 1, 2016 (4 ) (4 ) Unrecognized net loss on defined benefit plan, net of taxes of $2 million and $3 million as of July 1, 2016, and January 1, 2016, respectively (4 ) (4 ) Total accumulated other comprehensive loss, net of taxes of $2 million and $6 million as of July 1, 2016, and January 1, 2016, respectively $ (4 ) $ (8 ) Reclassifications from other comprehensive income to net income relating to unrecognized net gain (loss) on settled derivative instruments associated with outstanding debt for the quarter and six months ended July 1, 2016, and July 3, 2015, were not material. There were no reclassifications from other comprehensive income to net income relating to foreign currency translation adjustments or unrecognized net gain (loss) on defined benefit plan during the quarter and six months ended July 1, 2016, and July 3, 2015. Reclassifications for unrecognized net gain (loss) on settled derivative instruments associated with outstanding debt are recorded in "Interest expense, net" in the Company's condensed consolidated statements of income.

Restructuring Expenses

Restructuring Expenses	6 Months Ended
	Jul. 01, 2016
Restructuring Cost and Reserve [Line Items]
Restructuring Expenses	Restructuring Expenses In fiscal 2014, in anticipation of the spin-off of New SAIC from the Company, the Company initiated an overall spin-off program to align the Company’s cost structure for post spin-off. The Company reduced headcount and reduced its real estate footprint by vacating facilities that are not necessary for its future requirements. The Company has continued its real estate optimization initiatives post separation to improve its cost profile and has exited real estate leases and incurred restructuring charges consisting of various expenses such as lease termination fees, asset impairment charges and lease vacancy reserves. The Company incurred lease termination expenses in its Corporate and Other segment of $1 million for the six months ended July 1, 2016 for lease losses and $2 million in the corresponding prior period ending July 3, 2015 related to an adjustment to reserves for lease losses from the spin-off due to revised sublease income assumptions. The Company incurred $1 million of lease termination expenses for the quarter ended July 1, 2016, and incurred no lease termination expenses for the quarter ended July 3, 2015. The restructuring liability for lease termination expenses as of July 1, 2016, decreased by $2 million to $5 million from January 1, 2016 due to the relief of the liability of $3 million from the related rent cash payments, offset by additional lease termination expenses of $1 million . The Company expects the restructuring liability to be fully settled beyond one year and expects to incur additional facility restructuring costs in connection with the Transactions (see "Note 2–Lockheed Martin Transaction").
Leidos, Inc.
Restructuring Cost and Reserve [Line Items]
Restructuring Expenses	Restructuring Expenses In fiscal 2014, in anticipation of the spin-off of New SAIC from the Company, the Company initiated an overall spin-off program to align the Company’s cost structure for post spin-off. The Company reduced headcount and reduced its real estate footprint by vacating facilities that are not necessary for its future requirements. The Company has continued its real estate optimization initiatives post separation to improve its cost profile and has exited real estate leases and incurred restructuring charges consisting of various expenses such as lease termination fees, asset impairment charges and lease vacancy reserves. The Company incurred lease termination expenses in its Corporate and Other segment of $1 million for the six months ended July 1, 2016 for lease losses and $2 million in the corresponding prior period ending July 3, 2015 related to an adjustment to reserves for lease losses from the spin-off due to revised sublease income assumptions. The Company incurred $1 million of lease termination expenses for the quarter ended July 1, 2016, and incurred no lease termination expenses for the quarter ended July 3, 2015. The restructuring liability for lease termination expenses as of July 1, 2016, decreased by $2 million to $5 million from January 1, 2016 due to the relief of the liability of $3 million from the related rent cash payments, offset by additional lease termination expenses of $1 million . The Company expects the restructuring liability to be fully settled beyond one year and expects to incur additional facility restructuring costs in connection with the Transactions (see "Note 2–Lockheed Martin Transaction").

Earnings Per Share (EPS)

Earnings Per Share (EPS)	6 Months Ended
	Jul. 01, 2016
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Earnings Per Share (EPS)	Earnings Per Share (EPS) Basic EPS is computed by dividing income less earnings allocable to participating securities by the basic weighted average number of shares outstanding. Diluted EPS is computed similar to basic EPS, except the weighted average number of shares outstanding is increased to include the dilutive effect of outstanding stock options and other stock-based awards. The Company is required to allocate a portion of its earnings to its unvested stock awards containing nonforfeitable rights to dividends or dividend equivalents (participating securities) in calculating EPS using the two-class method. The following table provides a reconciliation of the weighted average number of shares outstanding used to compute basic and diluted EPS for the periods presented: Three Months Ended Six Months Ended July 1, July 3, July 1, July 3, (in millions) Basic weighted average number of shares outstanding 73 73 72 73 Dilutive common share equivalents—stock options and other stock awards 1 1 2 2 Diluted weighted average number of shares outstanding 74 74 74 75 Anti-dilutive stock-based awards are excluded from the weighted average number of shares outstanding used to compute basic and diluted EPS. For the quarter and six months ended July 1, 2016, there were a total of 1 million outstanding stock options and vesting stock awards that were antidilutive. For both the quarter and six months ended July 3, 2015, there were 2 million and 1 million of outstanding stock options and vesting stock awards, respectively, that were antidilutive. As a result of the adoption of ASU 2016-09 during the quarter ended July 1, 2016, the excess tax benefit was removed from the assumed proceeds under the treasury stock method used to calculate the dilutive effect of outstanding stock options and other stock-based awards (see "Note 1–Summary of Significant Accounting Policies"). This resulted in an immaterial increase in diluted weighted average shares outstanding. In May 2015, the Company entered into an Accelerated Share Repurchase ("ASR") agreement with a financial institution to repurchase shares of the Company's outstanding common stock for an aggregate purchase price of $100 million . During the second quarter ended July 3, 2015, the Company paid $100 million to the financial institution and received a total delivery of 2.4 million shares of its outstanding shares of common stock. All shares delivered were immediately retired. The final value of the total shares delivered of $100 million was allocated to additional paid in capital for the second quarter ended July 3, 2015. The total amount of shares delivered by the financial institution was adjusted by the volume weighted average price of the Company's stock over the valuation period specified in the ASR. The delivery of Leidos common stock for the ASR purchase reduced the Company's outstanding shares used to determine the weighted average shares outstanding for purposes of calculating basic and diluted EPS for the periods presented.
Leidos, Inc.
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Earnings Per Share (EPS)	Earnings Per Share (EPS) Basic EPS is computed by dividing income less earnings allocable to participating securities by the basic weighted average number of shares outstanding. Diluted EPS is computed similar to basic EPS, except the weighted average number of shares outstanding is increased to include the dilutive effect of outstanding stock options and other stock-based awards. The Company is required to allocate a portion of its earnings to its unvested stock awards containing nonforfeitable rights to dividends or dividend equivalents (participating securities) in calculating EPS using the two-class method. The following table provides a reconciliation of the weighted average number of shares outstanding used to compute basic and diluted EPS for the periods presented: Three Months Ended Six Months Ended July 1, July 3, July 1, July 3, (in millions) Basic weighted average number of shares outstanding 73 73 72 73 Dilutive common share equivalents—stock options and other stock awards 1 1 2 2 Diluted weighted average number of shares outstanding 74 74 74 75 Anti-dilutive stock-based awards are excluded from the weighted average number of shares outstanding used to compute basic and diluted EPS. For the quarter and six months ended July 1, 2016, there were a total of 1 million outstanding stock options and vesting stock awards that were antidilutive. For both the quarter and six months ended July 3, 2015, there were 2 million and 1 million of outstanding stock options and vesting stock awards, respectively, that were antidilutive. As a result of the adoption of ASU 2016-09 during the quarter ended July 1, 2016, the excess tax benefit was removed from the assumed proceeds under the treasury stock method used to calculate the dilutive effect of outstanding stock options and other stock-based awards (see "Note 1–Summary of Significant Accounting Policies"). This resulted in an immaterial increase in diluted weighted average shares outstanding. In May 2015, the Company entered into an Accelerated Share Repurchase ("ASR") agreement with a financial institution to repurchase shares of the Company's outstanding common stock for an aggregate purchase price of $100 million . During the second quarter ended July 3, 2015, the Company paid $100 million to the financial institution and received a total delivery of 2.4 million shares of its outstanding shares of common stock. All shares delivered were immediately retired. The final value of the total shares delivered of $100 million was allocated to additional paid in capital for the second quarter ended July 3, 2015. The total amount of shares delivered by the financial institution was adjusted by the volume weighted average price of the Company's stock over the valuation period specified in the ASR. The delivery of Leidos common stock for the ASR purchase reduced the Company's outstanding shares used to determine the weighted average shares outstanding for purposes of calculating basic and diluted EPS for the periods presented.

Income Taxes

Income Taxes	6 Months Ended
	Jul. 01, 2016
Operating Loss Carryforwards [Line Items]
Income Taxes	Income Taxes For the quarter ended July 1, 2016, the Company's effective tax rate ("ETR") was 31.7% compared to 28.8% for the three months ended July 3, 2015. The increase in ETR was primarily due to a tax benefit from the release of a valuation allowance in the second quarter of the prior year that did not recur, partially offset by the tax benefit recognized in the current quarter upon settlement of stock-based awards due to the adoption of the new accounting standard for stock-based compensation discussed below. For the six months ended July 1, 2016, the Company's ETR was 31.9% compared to 20.0% for the six months ended July 3, 2015. The increase in ETR was primarily due to tax benefits from the utilization of capital losses to offset historical capital gains in the first six months of the prior year that did not recur, partially offset by the tax benefit recognized in the current quarter upon settlement of stock-based awards due to the adoption of the new accounting standard for stock-based compensation discussed below. As a result of the adoption of ASU 2016-09 during the quarter ended July 1, 2016, the Company recognized excess tax benefits and deficiencies related to employee share-based payment transactions as income tax expense or benefit in the Company's condensed consolidated statements of income, which resulted in a $3 million and $7 million tax benefit as a discrete item for the second quarter and six months ended July 1, 2016, respectively (see "Note 1–Summary of Significant Accounting Policies"). The adoption of the new accounting standard could result in fluctuations in the ETR period over period depending on the amount of excess tax benefits or deficiencies recognized. The Company files income tax returns in the United States and various state and foreign jurisdictions. The Company participates in the Internal Revenue Service ("IRS") Compliance Assurance Process, a real-time audit of the Company's consolidated federal corporate income tax return. The IRS has examined the Company's consolidated federal income tax returns through fiscal 2015. With a few exceptions, as of July 1, 2016, the Company is no longer subject to state, local or foreign examinations by the tax authorities for years before fiscal 2013. As of July 1, 2016, the balance of unrecognized tax benefits included liabilities for uncertain tax positions of $11 million , of which $5 million were classified as other long-term liabilities in the condensed consolidated balance sheets. During the next 12 months, it is reasonably possible that resolution of reviews by taxing authorities, both domestic and international, could be reached with respect to $7 million of the Company’s unrecognized tax benefits either because the Company’s tax positions are sustained or because the Company agrees to their disallowance and pays the related income tax. This is dependent on the timing of ongoing examinations as well as any potential litigation and expiration of statute of limitations. While the Company believes it has adequate accruals for uncertain tax positions, the tax authorities may determine that the Company owes taxes in excess of recorded accruals or the recorded accruals may be in excess of the final settlement amounts agreed to by the tax authorities.
Leidos, Inc.
Operating Loss Carryforwards [Line Items]
Income Taxes	Income Taxes For the quarter ended July 1, 2016, the Company's effective tax rate ("ETR") was 31.7% compared to 28.8% for the three months ended July 3, 2015. The increase in ETR was primarily due to a tax benefit from the release of a valuation allowance in the second quarter of the prior year that did not recur, partially offset by the tax benefit recognized in the current quarter upon settlement of stock-based awards due to the adoption of the new accounting standard for stock-based compensation discussed below. For the six months ended July 1, 2016, the Company's ETR was 31.9% compared to 20.0% for the six months ended July 3, 2015. The increase in ETR was primarily due to tax benefits from the utilization of capital losses to offset historical capital gains in the first six months of the prior year that did not recur, partially offset by the tax benefit recognized in the current quarter upon settlement of stock-based awards due to the adoption of the new accounting standard for stock-based compensation discussed below. As a result of the adoption of ASU 2016-09 during the quarter ended July 1, 2016, the Company recognized excess tax benefits and deficiencies related to employee share-based payment transactions as income tax expense or benefit in the Company's condensed consolidated statements of income, which resulted in a $3 million and $7 million tax benefit as a discrete item for the second quarter and six months ended July 1, 2016, respectively (see "Note 1–Summary of Significant Accounting Policies"). The adoption of the new accounting standard could result in fluctuations in the ETR period over period depending on the amount of excess tax benefits or deficiencies recognized. The Company files income tax returns in the United States and various state and foreign jurisdictions. The Company participates in the Internal Revenue Service ("IRS") Compliance Assurance Process, a real-time audit of the Company's consolidated federal corporate income tax return. The IRS has examined the Company's consolidated federal income tax returns through fiscal 2015. With a few exceptions, as of July 1, 2016, the Company is no longer subject to state, local or foreign examinations by the tax authorities for years before fiscal 2013. As of July 1, 2016, the balance of unrecognized tax benefits included liabilities for uncertain tax positions of $11 million , of which $5 million were classified as other long-term liabilities in the condensed consolidated balance sheets. During the next 12 months, it is reasonably possible that resolution of reviews by taxing authorities, both domestic and international, could be reached with respect to $7 million of the Company’s unrecognized tax benefits either because the Company’s tax positions are sustained or because the Company agrees to their disallowance and pays the related income tax. This is dependent on the timing of ongoing examinations as well as any potential litigation and expiration of statute of limitations. While the Company believes it has adequate accruals for uncertain tax positions, the tax authorities may determine that the Company owes taxes in excess of recorded accruals or the recorded accruals may be in excess of the final settlement amounts agreed to by the tax authorities.

Business Segments

Business Segments	6 Months Ended
	Jul. 01, 2016
Segment Reporting Information [Line Items]
Business Segments	Business Segments The Company defines its reportable segments based on the way the chief operating decision maker ("CODM"), currently its chief executive officer, manages the operations of the Company for purposes of allocating resources and assessing performance. During the first quarter of fiscal 2016, the Company entered into an agreement to sell its design, build and heavy construction engineering business (see "Note 3–Divestitures"). This transaction allows the Company to better focus its engineering efforts in the utility and broader infrastructure markets. Accordingly, the reportable segment of Health and Engineering was renamed as Health and Infrastructure Sector ("HIS"). The Company has the following reportable segments: National Security Solutions, Health and Infrastructure Sector, and Corporate and Other. The segment information for the periods presented was as follows: Three Months Ended Six Months Ended July 1, July 3, July 1, July 3, (in millions) Revenues: National Security Solutions $ 915 $ 879 $ 1,813 $ 1,741 Health and Infrastructure Sector 373 379 787 764 Corporate and Other — (1 ) — (2 ) Total revenues $ 1,288 $ 1,257 $ 2,600 $ 2,503 Operating income (loss): National Security Solutions $ 61 $ 74 $ 133 $ 136 Operating income margin 6.7 % 8.4 % 7.3 % 7.8 % Health and Infrastructure Sector 39 (7 ) 75 (14 ) Operating income (negative) margin 10.5 % (1.8 )% 9.5 % (1.8 )% Corporate and Other (25 ) (3 ) (44 ) (20 ) Total operating income $ 75 $ 64 $ 164 $ 102 Operating income margin 5.8 % 5.1 % 6.3 % 4.1 % Asset information by segment is not a key measure of performance used by the CODM. Interest income, interest expense and provision for income taxes, as reported in the condensed consolidated financial statements, are not part of operating income and are primarily recorded at the corporate level. Under U.S. Government Cost Accounting Standards, indirect costs including depreciation expense are collected in numerous indirect cost pools, which are then collectively allocated out to the Company’s reportable segments based on a representative causal or beneficial relationship of the costs in the pool to the costs in the base.
Leidos, Inc.
Segment Reporting Information [Line Items]
Business Segments	Business Segments The Company defines its reportable segments based on the way the chief operating decision maker ("CODM"), currently its chief executive officer, manages the operations of the Company for purposes of allocating resources and assessing performance. During the first quarter of fiscal 2016, the Company entered into an agreement to sell its design, build and heavy construction engineering business (see "Note 3–Divestitures"). This transaction allows the Company to better focus its engineering efforts in the utility and broader infrastructure markets. Accordingly, the reportable segment of Health and Engineering was renamed as Health and Infrastructure Sector ("HIS"). The Company has the following reportable segments: National Security Solutions, Health and Infrastructure Sector, and Corporate and Other. The segment information for the periods presented was as follows: Three Months Ended Six Months Ended July 1, July 3, July 1, July 3, (in millions) Revenues: National Security Solutions $ 915 $ 879 $ 1,813 $ 1,741 Health and Infrastructure Sector 373 379 787 764 Corporate and Other — (1 ) — (2 ) Total revenues $ 1,288 $ 1,257 $ 2,600 $ 2,503 Operating income (loss): National Security Solutions $ 61 $ 74 $ 133 $ 136 Operating income margin 6.7 % 8.4 % 7.3 % 7.8 % Health and Infrastructure Sector 39 (7 ) 75 (14 ) Operating income (negative) margin 10.5 % (1.8 )% 9.5 % (1.8 )% Corporate and Other (25 ) (3 ) (44 ) (20 ) Total operating income $ 75 $ 64 $ 164 $ 102 Operating income margin 5.8 % 5.1 % 6.3 % 4.1 % Asset information by segment is not a key measure of performance used by the CODM. Interest income, interest expense and provision for income taxes, as reported in the condensed consolidated financial statements, are not part of operating income and are primarily recorded at the corporate level. Under U.S. Government Cost Accounting Standards, indirect costs including depreciation expense are collected in numerous indirect cost pools, which are then collectively allocated out to the Company’s reportable segments based on a representative causal or beneficial relationship of the costs in the pool to the costs in the base.

Legal Proceedings

Legal Proceedings	6 Months Ended
	Jul. 01, 2016
Loss Contingencies [Line Items]
Legal Proceedings	Legal Proceedings Data Privacy Litigation The Company was previously a defendant in a putative class action, In Re: Science Applications International Corporation ("SAIC") Backup Tape Data Theft Litigation , which was a Multidistrict Litigation ("MDL") action in the U.S. District Court for the District of Columbia relating to the theft of computer backup tapes from a vehicle of a company employee. In May 2014, the District Court dismissed all but two plaintiffs from the MDL action. In June 2014, Leidos and its co-defendant, TRICARE, entered into settlement agreements with the remaining two plaintiffs who subsequently dismissed their claims with prejudice. On September 20, 2014, the Company was named as a defendant in a putative class action, Martin Fernandez, on Behalf Of Himself And All Other Similarly Situated v. Leidos, Inc. in the Eastern District Court of California, related to the same theft of computer backup tapes. The recent complaint includes allegations of violations of the California Confidentiality of Medical Information Act, the California Unfair Competition Law, and other claims. On August 28, 2015, the Court dismissed all claims brought by the Plaintiff against the Company. Plaintiff filed a notice of appeal of this dismissal on November 17, 2015, to the United States Court of Appeals for the Ninth Circuit where the appeal remains pending. Plaintiff filed his appellate brief on May 5, 2016 and Leidos filed its response on July 6, 2016. Plaintiff now has the option to file a reply to the Company's brief by August 19, 2016, after which, the Court will consider the parties’ arguments and render a decision. Securities Litigation Between February and April 2012, alleged stockholders filed three putative securities class actions. One case was withdrawn and two cases were consolidated in the U.S. District Court for the Southern District of New York in In Re: SAIC, Inc. Securities Litigation . The consolidated securities complaint named as defendants the Company, a former chief financial officer, two former chief executive officers, a former group president and the former program manager on the Company's contract to develop and implement an automated time and attendance and workforce management system for certain agencies of the City of New York ("CityTime"), and was filed purportedly on behalf of all purchasers of the Company's common stock from April 11, 2007, through September 1, 2011. The consolidated securities complaint asserted claims under Sections 10(b) and 20(a) of the Securities Exchange Act of 1934 based on allegations that the Company and individual defendants made misleading statements or omissions about the Company’s revenues, operating income and internal controls in connection with disclosures relating to the CityTime project. The plaintiffs sought to recover from the Company and the individual defendants an unspecified amount of damages class members allegedly incurred by buying Leidos' stock at an inflated price. On October 1, 2013, the District Court dismissed many claims in the complaint with prejudice and on January 30, 2014, the District Court entered an order dismissing all remaining claims with prejudice and without leave to replead. The plaintiffs moved to vacate the District Court's judgment or obtain relief from the judgment and for leave to file an amended complaint. On September 30, 2014, the District Court denied plaintiffs' motions. The plaintiffs then appealed to the United States Court of Appeals for the Second Circuit. On March 29, 2016, the Second Circuit issued an opinion affirming in part, and vacating in part, the District Court's ruling. In particular, the Second Circuit held that the plaintiffs should be permitted to pursue omissions claims against the Company with respect to the annual report the Company filed on Form 10-K on March 25, 2011; the Second Circuit affirmed dismissal of all other claims, including all the claims against the individual defendants. The Company has petitioned the Second Circuit to rehear the appeal, and the petition is pending. Greek Government Contract Background and Arbitration. In May 2003, the Company entered into a firm-fixed-price contract with the Hellenic Republic of Greece (the "Customer") to provide a Command, Control, Communications, Coordination and Integration System (the "System") to support the 2004 Athens Summer Olympic Games (the "Olympics") and to serve as the security system for the Customer’s public order departments following completion of the Olympics. In November 2008, the Customer accepted the System in writing pursuant to the requirements of the contract. At the time, the Customer determined that the System substantially complied with the terms of the contract and accepted the System with certain alleged minor omissions and deviations. Upon System acceptance, the Company invoiced the Customer for approximately $15 million , representing the undisputed portion of the contract balance owed to the Company. The Customer has not paid this final invoice. In June 2009, the Company initiated arbitration before the International Chamber of Commerce against the Customer seeking damages for breaches of contract by the Customer. In July 2013, the Company received an arbitral award for approximately $43 million . The Customer has yet to satisfy the arbitral award. The Company is pursuing an enforcement action in U.S. District Court for the District of Columbia. In September 2013, the Customer filed a petition in a Greek court seeking to nullify the arbitral award and to stay enforcement of the award in Greece. A hearing on the Customer's nullification request was held in Greece in April 2014. The parties agreed to a stay of the Company's enforcement action in U.S. District Court until the Greek court issued a ruling on the Customer's nullification request. In June 2014, the Athens Court of Appeals annulled the arbitral award. The Company appealed the annulment decision to the Supreme Court of Greece in January 2015 to have the arbitral award reinstated. The Company is continuing to pursue enforcement of the award in the U.S. District Court as is still its right under U.S. and international law. The outcomes of the appeal in Greece and the Company's pending enforcement action are uncertain. Financial Status and Contingencies. As a result of the significant uncertainties on this contract, the Company converted to the completed-contract method of accounting and ceased recognizing revenues for the System development portion of this contract in fiscal 2006. No profits or losses were recorded on the Greek contract for the quarter and six months ended July 1, 2016, and July 3, 2015. As of July 1, 2016, the Company has recorded $123 million of losses under the Greek contract, reflecting the Company’s estimated total cost to complete the System, assuming the Greek contract value was limited to the cash received to date. Based on the complex nature of this contractual situation and the difficulties encountered to date, significant uncertainties exist and the Company is unable to reliably estimate the ultimate outcome. The Company may reverse a portion of the losses from the Greek contract if it receives payments as provided in the arbitral award. As of July 1, 2016, the Company's net balance sheet exposure for the Greek contract was $2 million . The Company has $28 million for value added tax ("VAT") included in the arbitration claim of which this amount was substantially awarded in the arbitral award. The Company has paid a certain amount of VAT and believes it is entitled to recover either as a payment from the arbitral award or as a refund from the taxing authorities. This amount paid is recorded as a receivable as of July 1, 2016, and is part of the net balance sheet exposure. If the Customer fails to pay the outstanding VAT amounts through the arbitral award or the Company is unable to recover these amounts as a refund from the taxing authorities, the Company’s total losses on the Greek contract could increase. The Company has met certain advance payment and performance bonding requirements through the issuance of euro-denominated standby letters of credit. As of July 1, 2016, there were $4 million in standby letters of credit outstanding relating to the support and maintenance of the System. In the arbitration, the Company was awarded but has not received $21 million representing the amounts drawn by the Customer in fiscal 2011 on certain standby letters of credit as well as damages. The principal subcontractor has provided to the Company euro-denominated standby letters of credit in the amount of $18 million as of July 1, 2016, of which $16 million relates to the delivery of the System. The Company may draw on the subcontractor’s standby letters of credit under certain circumstances by providing a statement to the responsible bank that the subcontractor has not fulfilled its obligations under the subcontract. Other The Company is also involved in various claims and lawsuits arising in the normal conduct of its business, none of which, in the opinion of the Company’s management, based upon current information, will likely have a material adverse effect on the Company’s condensed consolidated financial position, results of operations, or cash flows.
Leidos, Inc.
Loss Contingencies [Line Items]
Legal Proceedings	Legal Proceedings Data Privacy Litigation The Company was previously a defendant in a putative class action, In Re: Science Applications International Corporation ("SAIC") Backup Tape Data Theft Litigation , which was a Multidistrict Litigation ("MDL") action in the U.S. District Court for the District of Columbia relating to the theft of computer backup tapes from a vehicle of a company employee. In May 2014, the District Court dismissed all but two plaintiffs from the MDL action. In June 2014, Leidos and its co-defendant, TRICARE, entered into settlement agreements with the remaining two plaintiffs who subsequently dismissed their claims with prejudice. On September 20, 2014, the Company was named as a defendant in a putative class action, Martin Fernandez, on Behalf Of Himself And All Other Similarly Situated v. Leidos, Inc. in the Eastern District Court of California, related to the same theft of computer backup tapes. The recent complaint includes allegations of violations of the California Confidentiality of Medical Information Act, the California Unfair Competition Law, and other claims. On August 28, 2015, the Court dismissed all claims brought by the Plaintiff against the Company. Plaintiff filed a notice of appeal of this dismissal on November 17, 2015, to the United States Court of Appeals for the Ninth Circuit where the appeal remains pending. Plaintiff filed his appellate brief on May 5, 2016 and Leidos filed its response on July 6, 2016. Plaintiff now has the option to file a reply to the Company's brief by August 19, 2016, after which, the Court will consider the parties’ arguments and render a decision. Securities Litigation Between February and April 2012, alleged stockholders filed three putative securities class actions. One case was withdrawn and two cases were consolidated in the U.S. District Court for the Southern District of New York in In Re: SAIC, Inc. Securities Litigation . The consolidated securities complaint named as defendants the Company, a former chief financial officer, two former chief executive officers, a former group president and the former program manager on the Company's contract to develop and implement an automated time and attendance and workforce management system for certain agencies of the City of New York ("CityTime"), and was filed purportedly on behalf of all purchasers of the Company's common stock from April 11, 2007, through September 1, 2011. The consolidated securities complaint asserted claims under Sections 10(b) and 20(a) of the Securities Exchange Act of 1934 based on allegations that the Company and individual defendants made misleading statements or omissions about the Company’s revenues, operating income and internal controls in connection with disclosures relating to the CityTime project. The plaintiffs sought to recover from the Company and the individual defendants an unspecified amount of damages class members allegedly incurred by buying Leidos' stock at an inflated price. On October 1, 2013, the District Court dismissed many claims in the complaint with prejudice and on January 30, 2014, the District Court entered an order dismissing all remaining claims with prejudice and without leave to replead. The plaintiffs moved to vacate the District Court's judgment or obtain relief from the judgment and for leave to file an amended complaint. On September 30, 2014, the District Court denied plaintiffs' motions. The plaintiffs then appealed to the United States Court of Appeals for the Second Circuit. On March 29, 2016, the Second Circuit issued an opinion affirming in part, and vacating in part, the District Court's ruling. In particular, the Second Circuit held that the plaintiffs should be permitted to pursue omissions claims against the Company with respect to the annual report the Company filed on Form 10-K on March 25, 2011; the Second Circuit affirmed dismissal of all other claims, including all the claims against the individual defendants. The Company has petitioned the Second Circuit to rehear the appeal, and the petition is pending. Greek Government Contract Background and Arbitration. In May 2003, the Company entered into a firm-fixed-price contract with the Hellenic Republic of Greece (the "Customer") to provide a Command, Control, Communications, Coordination and Integration System (the "System") to support the 2004 Athens Summer Olympic Games (the "Olympics") and to serve as the security system for the Customer’s public order departments following completion of the Olympics. In November 2008, the Customer accepted the System in writing pursuant to the requirements of the contract. At the time, the Customer determined that the System substantially complied with the terms of the contract and accepted the System with certain alleged minor omissions and deviations. Upon System acceptance, the Company invoiced the Customer for approximately $15 million , representing the undisputed portion of the contract balance owed to the Company. The Customer has not paid this final invoice. In June 2009, the Company initiated arbitration before the International Chamber of Commerce against the Customer seeking damages for breaches of contract by the Customer. In July 2013, the Company received an arbitral award for approximately $43 million . The Customer has yet to satisfy the arbitral award. The Company is pursuing an enforcement action in U.S. District Court for the District of Columbia. In September 2013, the Customer filed a petition in a Greek court seeking to nullify the arbitral award and to stay enforcement of the award in Greece. A hearing on the Customer's nullification request was held in Greece in April 2014. The parties agreed to a stay of the Company's enforcement action in U.S. District Court until the Greek court issued a ruling on the Customer's nullification request. In June 2014, the Athens Court of Appeals annulled the arbitral award. The Company appealed the annulment decision to the Supreme Court of Greece in January 2015 to have the arbitral award reinstated. The Company is continuing to pursue enforcement of the award in the U.S. District Court as is still its right under U.S. and international law. The outcomes of the appeal in Greece and the Company's pending enforcement action are uncertain. Financial Status and Contingencies. As a result of the significant uncertainties on this contract, the Company converted to the completed-contract method of accounting and ceased recognizing revenues for the System development portion of this contract in fiscal 2006. No profits or losses were recorded on the Greek contract for the quarter and six months ended July 1, 2016, and July 3, 2015. As of July 1, 2016, the Company has recorded $123 million of losses under the Greek contract, reflecting the Company’s estimated total cost to complete the System, assuming the Greek contract value was limited to the cash received to date. Based on the complex nature of this contractual situation and the difficulties encountered to date, significant uncertainties exist and the Company is unable to reliably estimate the ultimate outcome. The Company may reverse a portion of the losses from the Greek contract if it receives payments as provided in the arbitral award. As of July 1, 2016, the Company's net balance sheet exposure for the Greek contract was $2 million . The Company has $28 million for value added tax ("VAT") included in the arbitration claim of which this amount was substantially awarded in the arbitral award. The Company has paid a certain amount of VAT and believes it is entitled to recover either as a payment from the arbitral award or as a refund from the taxing authorities. This amount paid is recorded as a receivable as of July 1, 2016, and is part of the net balance sheet exposure. If the Customer fails to pay the outstanding VAT amounts through the arbitral award or the Company is unable to recover these amounts as a refund from the taxing authorities, the Company’s total losses on the Greek contract could increase. The Company has met certain advance payment and performance bonding requirements through the issuance of euro-denominated standby letters of credit. As of July 1, 2016, there were $4 million in standby letters of credit outstanding relating to the support and maintenance of the System. In the arbitration, the Company was awarded but has not received $21 million representing the amounts drawn by the Customer in fiscal 2011 on certain standby letters of credit as well as damages. The principal subcontractor has provided to the Company euro-denominated standby letters of credit in the amount of $18 million as of July 1, 2016, of which $16 million relates to the delivery of the System. The Company may draw on the subcontractor’s standby letters of credit under certain circumstances by providing a statement to the responsible bank that the subcontractor has not fulfilled its obligations under the subcontract. Other The Company is also involved in various claims and lawsuits arising in the normal conduct of its business, none of which, in the opinion of the Company’s management, based upon current information, will likely have a material adverse effect on the Company’s condensed consolidated financial position, results of operations, or cash flows.

Other Commitments and Contingen

Other Commitments and Contingencies	6 Months Ended
	Jul. 01, 2016
Other Commitments and Contingencies	Other Commitments and Contingencies VirnetX, Inc. In fiscal 2007, the Company transferred several patents to VirnetX Inc., a subsidiary of VirnetX Holding Corp. In consideration of this transfer, the Company received certain license rights and the right to receive a percentage of the consideration received in patent infringement or enforcement claims against third parties. In November 2012, a jury found that Apple Corporation infringed two of the patents that the Company previously transferred to VirnetX and awarded approximately $368 million to VirnetX, but the United States Court of Appeals for the Federal Circuit vacated this award. Although VirnetX petitioned the appeals court for an en banc review, this request was denied and the case was remanded to the Federal District Court for further proceedings, including a new jury trial which began on January 25, 2016. On February 3, 2016, the jury in the United States Court for the Eastern District of Texas, Tyler Division, awarded VirnetX $626 million in a verdict against Apple for willful infringement of four VirnetX patents. Under its agreements with VirnetX, Leidos would receive 25% of the proceeds obtained by VirnetX after reduction for attorneys' fees and costs. However, it is expected that Apple will appeal the verdict and no assurances can be given when or if the Company will receive any proceeds in connection with this jury award. In addition, if the Company receives any proceeds, the Company is required to pay a royalty to the customer who paid for the development of the technology. The Company does not have any assets or liabilities recorded in connection with this matter as of July 1, 2016. Government Investigations and Reviews The Company is routinely subject to investigations and reviews relating to compliance with various laws and regulations with respect to its role as a contractor to federal, state, and local government customers and in connection with performing services in countries outside of the United States. Adverse findings could have a material adverse effect on the Company’s business, financial position, results of operations and cash flows due to its reliance on government contracts. As of July 1, 2016, the Company believes it has adequately reserved for potential adjustments from audits or reviews of contract costs. The Company’s indirect cost audits by the DCAA remain open for fiscal 2011 and subsequent fiscal years. Although the Company has recorded contract revenues subsequent to and including fiscal 2011 based upon an estimate of costs that the Company believes will be approved upon final audit or review, the Company does not know the outcome of any ongoing or future audits or reviews and adjustments, and if future adjustments exceed the Company’s estimates, its profitability would be adversely affected. Letters of Credit and Surety Bonds The Company has outstanding letters of credit of $60 million as of July 1, 2016, principally related to guarantees on contracts. The Company also has outstanding surety bonds in the amount of $136 million , principally related to performance and subcontractor payment bonds on the Company’s contracts. The outstanding letters of credit and surety bonds have various terms with the majority of the letters of credit and bonds expiring over the next five fiscal years.
Leidos, Inc.
Other Commitments and Contingencies	Other Commitments and Contingencies VirnetX, Inc. In fiscal 2007, the Company transferred several patents to VirnetX Inc., a subsidiary of VirnetX Holding Corp. In consideration of this transfer, the Company received certain license rights and the right to receive a percentage of the consideration received in patent infringement or enforcement claims against third parties. In November 2012, a jury found that Apple Corporation infringed two of the patents that the Company previously transferred to VirnetX and awarded approximately $368 million to VirnetX, but the United States Court of Appeals for the Federal Circuit vacated this award. Although VirnetX petitioned the appeals court for an en banc review, this request was denied and the case was remanded to the Federal District Court for further proceedings, including a new jury trial which began on January 25, 2016. On February 3, 2016, the jury in the United States Court for the Eastern District of Texas, Tyler Division, awarded VirnetX $626 million in a verdict against Apple for willful infringement of four VirnetX patents. Under its agreements with VirnetX, Leidos would receive 25% of the proceeds obtained by VirnetX after reduction for attorneys' fees and costs. However, it is expected that Apple will appeal the verdict and no assurances can be given when or if the Company will receive any proceeds in connection with this jury award. In addition, if the Company receives any proceeds, the Company is required to pay a royalty to the customer who paid for the development of the technology. The Company does not have any assets or liabilities recorded in connection with this matter as of July 1, 2016. Government Investigations and Reviews The Company is routinely subject to investigations and reviews relating to compliance with various laws and regulations with respect to its role as a contractor to federal, state, and local government customers and in connection with performing services in countries outside of the United States. Adverse findings could have a material adverse effect on the Company’s business, financial position, results of operations and cash flows due to its reliance on government contracts. As of July 1, 2016, the Company believes it has adequately reserved for potential adjustments from audits or reviews of contract costs. The Company’s indirect cost audits by the DCAA remain open for fiscal 2011 and subsequent fiscal years. Although the Company has recorded contract revenues subsequent to and including fiscal 2011 based upon an estimate of costs that the Company believes will be approved upon final audit or review, the Company does not know the outcome of any ongoing or future audits or reviews and adjustments, and if future adjustments exceed the Company’s estimates, its profitability would be adversely affected. Letters of Credit and Surety Bonds The Company has outstanding letters of credit of $60 million as of July 1, 2016, principally related to guarantees on contracts. The Company also has outstanding surety bonds in the amount of $136 million , principally related to performance and subcontractor payment bonds on the Company’s contracts. The outstanding letters of credit and surety bonds have various terms with the majority of the letters of credit and bonds expiring over the next five fiscal years.

Summary of Significant Accoun19

Summary of Significant Accounting Policies (Policies)	6 Months Ended
	Jul. 01, 2016
Accounting Policies [Abstract]
Nature of Operations and Basis of Presentation	Nature of Operations and Basis of Presentation Leidos Holdings, Inc. ("Leidos") is a holding company whose direct 100% -owned subsidiary is Leidos, Inc., an applied technology company focused on delivering services and solutions that leverage expertise in the national security, health and infrastructure markets. Leidos, Inc. provides these services and solutions to government and commercial customers, both domestically and internationally. These customers include agencies of the U.S. Department of Defense ("DoD"), the intelligence community, the U.S. Department of Homeland Security ("DHS") and other U.S. Government civil agencies, state and local government agencies and foreign governments. Unless indicated otherwise, references to the "Company," "we," "us" and "our" refer collectively to Leidos Holdings, Inc., Leidos, Inc., and its consolidated subsidiaries. On January 26, 2016, Leidos Holdings, Inc. entered into a definitive agreement with Lockheed Martin Corporation whereby the Information Systems & Global Solutions business ("IS&GS") of Lockheed Martin will be merged with a wholly-owned subsidiary of Leidos. See "Note 2–Lockheed Martin Transaction" for further information. The unaudited condensed consolidated financial statements of Leidos and Leidos, Inc. include the balances of its majority-owned and 100% -owned subsidiaries. Leidos does not have separate operations, assets or liabilities independent of Leidos, Inc., except for a note receivable from Leidos to Leidos, Inc. (the “related party note”), on which interest is recognized. From time to time, Leidos issues stock to employees of Leidos, Inc. and its subsidiaries, which is reflected in stockholders' equity in Leidos’ condensed consolidated balance sheets and results in an increase to the related party note. All intercompany transactions and balances have been eliminated in consolidation. The accompanying unaudited condensed financial information has been prepared in accordance with the rules of the U.S. Securities and Exchange Commission ("SEC") and accounting principles generally accepted in the United States of America ("GAAP"). Certain disclosures normally included in financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules. The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingencies at the date of the financial statements, as well as the reported amounts of revenues and expenses during the reporting periods. Management evaluates these estimates and assumptions on an ongoing basis, including those relating to rate reserves, allowances for doubtful accounts, inventories, fair value and impairment of intangible assets and goodwill, income taxes, estimated profitability of long-term contracts, pension benefits, stock-based compensation expense, contingencies and litigation. Estimates have been prepared by management on the basis of the most current and best available information; however, actual results could differ materially from those estimates. During the Company's first quarter ended April 1, 2016, the company adopted ASU 2015-03, Interest - Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs , resulting in a reclassification of deferred financing costs related to the Company's notes of $7 million from "Other assets" to "Notes payable and long-term debt, net of current portion" in the Company's condensed consolidated balance sheets as of January 1, 2016 (see "Accounting Standards Updates Adopted" below). In the opinion of management, the accompanying unaudited condensed consolidated financial statements reflect all adjustments, which consist of normal recurring adjustments, necessary for a fair presentation thereof. The results reported in these unaudited condensed consolidated financial statements are not necessarily indicative of the results that may be expected for the entire year. These unaudited condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and combined notes thereto included in the Company’s Transition Report on Form 10-K filed on February 26, 2016.
Fair Value Measurements	Fair Value Measurements The accounting standard for fair value measurements establishes a three-tier value hierarchy, which prioritizes the inputs used in measuring fair value as follows: observable inputs such as quoted prices in active markets (Level 1); inputs other than quoted prices in active markets that are observable either directly or indirectly (Level 2); and unobservable inputs in which there is little or no market data, which requires the Company to develop its own assumptions (Level 3). The fair value of financial instruments is determined based on quoted market prices, if available, or management’s best estimate. It is management’s belief that the carrying amounts of the Company’s financial instruments, other than derivatives, which include cash equivalents, are reasonable estimates of their related fair values. The carrying value of accounts receivable, accounts payable, and accrued expenses approximate their fair values. The carrying value of the Company's notes receivable as of July 1, 2016 of $95 million approximates fair value as the stated interest rates within the agreements are consistent with the current market rates used in notes with similar terms in the market (Level 2 inputs). The fair value of long-term debt is determined based on current interest rates available for debt with terms and maturities similar to the Company’s existing debt arrangements (Level 2 inputs). As of July 1, 2016, the fair value of notes payable and long-term debt was $1.06 billion with the carrying value reported in the condensed consolidated balance sheets at cost of $1.09 billion . The Company’s cash equivalents were primarily comprised of investments in several large institutional money market funds and bank deposits, with original maturity of three months or less. There are immaterial restrictions on the withdrawal of the Company’s cash and cash equivalents of foreign currency due to exchange control regulations. The Company's cash equivalents are recorded at historical cost, which equals fair value based on quoted market prices (Level 1 input). The Company's financial instruments measured at fair value on a recurring basis using Level 2 inputs consisted of the Company's interest rate swaps on its $450 million fixed rate 4.45% notes maturing in December 2020 (see "Note 4–Derivative Instruments and Hedging Activities"). At July 1, 2016, the Company did not have any financial assets or liabilities measured at fair value on a recurring basis using Level 3 inputs. The Company’s non-financial instruments measured at fair value on a non-recurring basis include goodwill, indefinite-lived intangible assets and long-lived tangible assets. The valuation methods used to determine fair value require a significant degree of management judgment to determine the key assumptions. As such, the Company generally classifies non-financial instruments as either Level 2 or Level 3 fair value measurements
Changes in Estimates on Contracts	Changes in Estimates on Contracts Changes in estimates related to certain types of contracts accounted for using the percentage of completion method of accounting are recognized in the period in which such changes are made for the inception-to-date effect of the changes. Changes in these estimates can routinely occur over the contract performance period for a variety of reasons, including changes in contract scope, contract cost estimates and estimated incentive or award fees.
Accounting Standards Updates Adopted	Accounting Standards Updates Adopted In April 2015, the Financial Accounting Standards Board ("FASB") issued ASU 2015-03, Interest - Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs . This update eliminates separate presentation for debt issuance costs as an asset and requires issuance costs to be reported in the balance sheet as a direct reduction to the face amount of the associated debt. The Company adopted this ASU on a retrospective basis during the Company's first quarter ended April 1, 2016. This resulted in a reclassification of deferred financing costs related to the Company's notes of $7 million from "Other assets" to "Notes payable and long-term debt, net of current portion" in the Company's condensed consolidated balance sheets as of January 1, 2016. In March 2016, the FASB issued ASU 2016-09 Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting. This update is effective for annual periods beginning after December 15, 2016 and interim periods within those annual periods, with early adoption permitted. Among other requirements in the new standard, the ASU requires that an entity, (i) recognize excess tax benefits and deficiencies related to employee share-based payment transactions as an income tax expense or benefit in the income statement rather than in equity; (ii) present the excess tax benefits as an operating activity on the statement of cash flows versus current guidance to present them as financing activities; and, (iii) elect to either recognize stock forfeitures as they occur or estimate them. The Company elected to early adopt the provisions of the ASU prospectively from January 2, 2016, including continuation of estimating forfeitures instead of recording them as they occur. Consequently, the Company recognized a $3 million and $7 million of discrete tax benefit for the quarter and six months ended July 1, 2016, respectively, and operating cash flows for the six months ended July 1, 2016 increased $7 million with a corresponding decrease to financing cash flows.
Accounting Standards Updates Issued But Not Yet Adopted	Accounting Standards Updates Issued But Not Yet Adopted In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606) . This ASU affects any entity that either enters into contracts with customers to transfer goods or services or enters into contracts for the transfer of non-financial assets unless those contracts are within the scope of other standards (e.g. insurance contracts). This ASU will supersede all revenue recognition requirements in Topic 605, Revenue Recognition, and industry-specific guidance throughout the industry topics of the codification. The guidance's core principle is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. In applying the revenue principles, an entity will identify the contract(s) with a customer, identify the performance obligations, determine the transaction price, allocate the transaction price to the performance obligations and recognize revenue when the performance obligation is satisfied (either over time or at a point in time). The ASU further states that an entity should disclose sufficient information to enable users of financial statements to understand the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. In August 2015, the FASB issued ASU 2015-14, Revenue from Contracts with Customers (Topic 606): Deferral of the Effective Date , which approved a one-year deferral of the effective date of the ASU from the original effective date of annual reporting periods beginning after December 15, 2016, to annual reporting periods (including interim reporting periods) beginning after December 15, 2017, with an option for early adoption of the standard on the original effective date. Additionally, in March 2016, the FASB issued ASU 2016-08, Revenue from Contracts with Customers (Topic 606): Principal versus Agent Considerations (Reporting Revenue Gross versus Net) , which clarified the implementation guidance on principal versus agent considerations. In April 2016, the FASB issued ASU 2016-10, Revenue from Contracts with Customers (Topic 606): Identifying Performance Obligations and Licensing , that amended the revenue guidance on identifying performance obligations and accounting for licenses of intellectual property. In May 2016, the FASB issued ASU 2016-11 Revenue Recognition (Topic 605) and Derivatives and Hedging (Topic 805): Rescission of SEC Guidance Because of Accounting Standards Updates 2014-09 and 2014-16 Pursuant to Staff Announcements at the March 3, 2016 EITF Meeting , which rescinded from the FASB Accounting Standards Codification ("ASC") certain SEC paragraphs as a result of two SEC Staff Announcements. The FASB also issued ASU 2016-12 Revenue from Contracts with Customers (Topic 606): Narrow-Scope Improvements and Practical Expedients , which clarified guidance on assessment of collectibility, presentation of sale taxes, measurement of noncash consideration, and certain transition matters. The Company is still evaluating the impact that the provisions of ASU 2014-09 and related subsequent updates will have on the Company's condensed consolidated financial position, results of operations and cash flows. In January 2016, the FASB issued ASU 2016-01, Financial Instruments (Subtopic 825-10) , Recognition and Measurement of Financial Assets and Financial Liabilities , which makes several targeted changes to current GAAP regarding measurement and disclosure. The guidance is effective for the fiscal year beginning after December 15, 2017. The Company currently does not maintain a material portfolio of financial assets and liabilities which would be impacted by the codification but will continue to monitor the impact of the ASU through its effective date. In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) . This ASU will supersede the current lease guidance under ASC 840 and makes several changes, such as requiring an entity to recognize a right-of-use asset and corresponding lease obligation in the balance sheet, classified as financing or operating, as appropriate. The standard requires adoption under the modified retrospective approach and is effective for annual reporting periods beginning after December 15, 2018, including interim periods within those fiscal years. Early adoption is permitted. The Company is still evaluating the provisions of ASU 2016-02 and its impact on the Company's condensed consolidated financial position, results of operations and cash flows. In June 2016, the FASB issued ASU 2016-13, Financial Instruments - Credit Losses (Topic 326) , which among other changes, eliminates the requirement that a credit loss on a financial instrument be probable prior to recognition. The ASU will be effective for the Company for fiscal years beginning after December 15, 2019, with early adoption allowed for the year beginning after December 15, 2018. Elements of the Update pertaining to acquired loans and debt securities with deteriorated credit quality must be adopted prospectively, while other elements in the guidance should be adopted using a modified retrospective approach. The Company is currently evaluating the adoption approach and its impact on the Company's condensed consolidated financial position, results of operations and cash flows.

Summary of Significant Accoun20

Summary of Significant Accounting Policies (Tables)	6 Months Ended
	Jul. 01, 2016
Accounting Policies [Abstract]
Schedule of Supplementary Cash Flow Information	Supplementary cash flow information, including non-cash investing and financing activities, for the periods presented was as follows: Six Months Ended July 1, July 3, (in millions) Accrued dividends declared $ — $ 24 Cash paid for interest $ 43 $ 33 Cash paid for income taxes, net of refunds (including discontinued operations) $ 38 $ 87

Lockheed Martin Transaction (Ta

Lockheed Martin Transaction (Tables)	6 Months Ended
	Jul. 01, 2016
Business Combinations [Abstract]
Schedule of Integration Costs	During the quarter and six months ended July 1, 2016, the Company incurred the following acquisition and integration costs in connection with the Transactions: Three Months Ended Six Months Ended July 1, July 1, (in millions) Strategic acquisition and integration advisory services $ 7 $ 10 Legal and accounting services 5 10 Other integration costs 3 4 Total acquisition and integration costs $ 15 $ 24

Divestitures (Tables)

Divestitures (Tables)	6 Months Ended
	Jul. 01, 2016
SAIC
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Schedule of Income Statement, Balance Sheet for Discontinued Operation	The operating results of the Company's discontinued operations for the periods presented were as follows: Three Months Ended Six Months Ended July 1, July 3, July 1, July 3, (in millions) Revenues $ 4 $ 6 $ 7 $ 14 Costs and expenses: — Cost of revenues 4 6 7 12 Selling, general and administrative expenses — — — 4 Operating loss $ — $ — $ — $ (2 ) Non-operating income $ — $ — $ — $ 2

Derivative Instruments and He23

Derivative Instruments and Hedging Activities (Tables)	6 Months Ended
	Jul. 01, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Interest Rate Derivative	The fair value of the interest rate swaps and their impact on the related fair value of the debt in the condensed consolidated balance sheets is as follows: Interest rate swaps Hedged items Balance sheet line item July 1, January 1, Balance sheet line item July 1, January 1, (in millions) Other assets $ 23 $ 8 Notes payable and long-term debt, net of current portion $ 23 $ 8

Accumulated Other Comprehensi24

Accumulated Other Comprehensive Loss (Tables)	6 Months Ended
	Jul. 01, 2016
Equity [Abstract]
Schedule of Accumulated Other Comprehensive Loss	The components of accumulated other comprehensive loss were as follows: July 1, January 1, (in millions) Foreign currency translation adjustments, net of taxes of $(3) million as of July 1, 2016 $ 4 $ — Unrecognized net loss on settled derivative instruments associated with outstanding debt, net of taxes of $3 million as of July 1, 2016, and January 1, 2016 (4 ) (4 ) Unrecognized net loss on defined benefit plan, net of taxes of $2 million and $3 million as of July 1, 2016, and January 1, 2016, respectively (4 ) (4 ) Total accumulated other comprehensive loss, net of taxes of $2 million and $6 million as of July 1, 2016, and January 1, 2016, respectively $ (4 ) $ (8 )

Earnings Per Share (EPS) (Table

Earnings Per Share (EPS) (Tables)	6 Months Ended
	Jul. 01, 2016
Earnings Per Share [Abstract]
Reconciliation of Weighted Average Number of Shares Outstanding	The following table provides a reconciliation of the weighted average number of shares outstanding used to compute basic and diluted EPS for the periods presented: Three Months Ended Six Months Ended July 1, July 3, July 1, July 3, (in millions) Basic weighted average number of shares outstanding 73 73 72 73 Dilutive common share equivalents—stock options and other stock awards 1 1 2 2 Diluted weighted average number of shares outstanding 74 74 74 75

Business Segments (Tables)

Business Segments (Tables)	6 Months Ended
	Jul. 01, 2016
Segment Reporting [Abstract]
Schedule of Segment Reporting Information by Segment	The segment information for the periods presented was as follows: Three Months Ended Six Months Ended July 1, July 3, July 1, July 3, (in millions) Revenues: National Security Solutions $ 915 $ 879 $ 1,813 $ 1,741 Health and Infrastructure Sector 373 379 787 764 Corporate and Other — (1 ) — (2 ) Total revenues $ 1,288 $ 1,257 $ 2,600 $ 2,503 Operating income (loss): National Security Solutions $ 61 $ 74 $ 133 $ 136 Operating income margin 6.7 % 8.4 % 7.3 % 7.8 % Health and Infrastructure Sector 39 (7 ) 75 (14 ) Operating income (negative) margin 10.5 % (1.8 )% 9.5 % (1.8 )% Corporate and Other (25 ) (3 ) (44 ) (20 ) Total operating income $ 75 $ 64 $ 164 $ 102 Operating income margin 5.8 % 5.1 % 6.3 % 4.1 %

Summary of Significant Accoun27

Summary of Significant Accounting Policies (Additional Information) (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Jul. 01, 2016	Jul. 03, 2015	Jul. 01, 2016	Jul. 03, 2015	Jan. 01, 2016
Significant Accounting Policies [Line Items]
Increase (decrease) in income due to contract estimates	$ 5,000,000	$ 5,000,000	$ 13,000,000	$ 10,000,000
Increase (decrease) in income due to contract estimates per diluted share	$ 0.04	$ 0.04	$ 0.11	$ 0.08
Income tax expense	$ 19,000,000	$ 15,000,000	$ 44,000,000	$ 15,000,000
Cash flows provided by operating activities of continuing operations			58,000,000	109,000,000
Cash flows used in financing activities of continuing operations			$ (61,000,000)	(206,000,000)
Leidos, Inc.
Significant Accounting Policies [Line Items]
Ownership interest (in percentage)	100.00%		100.00%
Income tax expense	$ 20,000,000	$ 17,000,000	$ 46,000,000	18,000,000
Cash flows provided by operating activities of continuing operations			58,000,000	109,000,000
Cash flows used in financing activities of continuing operations			(2,000,000)	$ (47,000,000)
Notes payable and long-term debt, net of current portion | Designated as Hedging Instrument | Interest rate swaps
Significant Accounting Policies [Line Items]
Fair value of long term debt	23,000,000		23,000,000		$ 8,000,000
Notes payable and long-term debt, net of current portion | Notes Which Mature In December 2020 | Designated as Hedging Instrument | Interest rate swaps
Significant Accounting Policies [Line Items]
Hedged instrument, face amount	$ 450,000,000		$ 450,000,000
Stated interest rate (in percentage)	4.45%		4.45%
Fair value
Significant Accounting Policies [Line Items]
Fair value of long term debt	$ 1,060,000,000		$ 1,060,000,000
Carrying value
Significant Accounting Policies [Line Items]
Fair value of note receivable	95,000,000		95,000,000
Fair value of long term debt	1,090,000,000		1,090,000,000
Accounting Standards Update 2015-03 | Notes payable and long-term debt, net of current portion
Significant Accounting Policies [Line Items]
Debt issuance costs					$ 7,000,000
Accounting Standards Update 2016-09, Excess Tax Benefit Component | New Accounting Pronouncement, Early Adoption, Effect
Significant Accounting Policies [Line Items]
Effective income tax rate reconciliation, share-based compensation, excess tax benefit, amount	$ 3,000,000		7,000,000
Cash flows provided by operating activities of continuing operations			7,000,000
Cash flows used in financing activities of continuing operations			$ (7,000,000)

Summary of Significant Accoun28

Summary of Significant Accounting Policies (Schedule of Supplementary Cash Flow Information) (Detail) - USD ($) $ in Millions	6 Months Ended
	Jul. 01, 2016	Jul. 03, 2015
Accounting Policies [Abstract]
Accrued dividends declared	$ 0	$ 24
Interest Paid	43	33
Cash paid for interest	$ 38	$ 87

Lockheed Martin Transaction (De

Lockheed Martin Transaction (Details) - Lockheed Martin Merger $ / shares in Units, shares in Millions, $ in Millions	Jan. 26, 2016USD ($)$ / sharesshares
Business Acquisition [Line Items]
Number of shares Lockheed Martin shareholders will receive from Leidos, as a percentage of Leidos common stock (in percentage)	50.50%
Percentage of common stock retained by the Leidos ( in percentage)	49.50%
Dividend Payable, Expected, Per Share | $ / shares	$ 13.64
Termination fees	$ 150
Reimbursement of expense, if termination of merger is due to rejection from shareholders'	37.5
Splitco
Business Acquisition [Line Items]
Debt financing	1,800
Payments to parent, special payment	$ 1,800
Lockheed Martin Shareholders'
Business Acquisition [Line Items]
Number of shares Lockheed Martin shareholders will receive from Leidos (in shares) | shares	77
Term Loan
Business Acquisition [Line Items]
Long-term debt, expected	$ 2,500
Line of Credit | Revolving Credit Facility
Business Acquisition [Line Items]
Maximum borrowing capacity	$ 750

Lockheed Martin Transaction (In

Lockheed Martin Transaction (Integration Costs) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 01, 2016	Jul. 03, 2015	Jul. 01, 2016	Jul. 03, 2015
Business Acquisition [Line Items]
Total acquisition and integration costs	$ 15	$ 0	$ 24	$ 0
Lockheed Martin Merger
Business Acquisition [Line Items]
Strategic acquisition and integration advisory services	7		10
Legal and accounting services	5		10
Other integration costs	3		4
Total acquisition and integration costs	$ 15		$ 24

Divestitures (Spin-off) (Detail

Divestitures (Spin-off) (Details) - Discontinued Operations, Disposed of by Means Other than Sale, Spinoff [Member] - SAIC - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 01, 2016	Jul. 03, 2015	Jul. 01, 2016	Jul. 03, 2015
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Revenues	$ 4	$ 6	$ 7	$ 14
Cost of revenues	4	6	7	12
Selling, general and administrative expenses	0	0	0	4
Operating loss	0	0	0	(2)
Non-operating income	$ 0	$ 0	$ 0	$ 2

Divestitures (Narrative) (Detai

Divestitures (Narrative) (Details) - USD ($) $ in Millions	Apr. 15, 2016	Jul. 24, 2015	Jan. 30, 2015	Jul. 03, 2015	Jul. 01, 2016	Jan. 01, 2016	Mar. 31, 2015
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Accounts payable and accrued liabilities					$ 720	$ 769
Disposal Group, Disposed of by Sale, Not Discontinued Operations | Plainfield
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash consideration received		$ 29
Aggregate consideration		102
Note receivable		$ 73
Disposal Group, Disposed of by Sale, Not Discontinued Operations | Plainfield
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Percentage of ownership (in percentage)							100.00%
Health and Infrastructure Sector | Disposal Group, Disposed of by Sale, Not Discontinued Operations | One Business
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from Divestiture of Businesses, Net of Cash Divested	$ 23
Receivable, net	73
Other assets	3
Accounts payable and accrued liabilities	63
Maximum earn-out payment	2
Accounts payable and accrued liabilities	6
Health and Infrastructure Sector | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Plainfield
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Impairment of assets			$ 40	$ 29
Other Operating Income (Expense) | Health and Infrastructure Sector | Disposal Group, Disposed of by Sale, Not Discontinued Operations | One Business
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain on sale of business	3
Selling Expense	$ 1

Derivative Instruments and He33

Derivative Instruments and Hedging Activities (Details) - Interest rate swaps - Designated as Hedging Instrument - USD ($)	3 Months Ended	6 Months Ended
	Jul. 01, 2016	Jul. 01, 2016	Jan. 01, 2016
Notes payable and long-term debt, net of current portion
Derivative [Line Items]
Derivative liability	$ 23,000,000	$ 23,000,000	$ 8,000,000
Notes payable and long-term debt, net of current portion | Notes Which Mature In December 2020
Derivative [Line Items]
Hedged instrument, face amount	450,000,000	450,000,000
Fair value adjustment	$ 4,000,000	$ 15,000,000
Stated interest rate (in percentage)	4.45%	4.45%
Other assets
Derivative [Line Items]
Derivative asset	$ 23,000,000	$ 23,000,000	$ 8,000,000

Related Party Transactions (Add

Related Party Transactions (Additional Information) (Detail)	6 Months Ended
	Jul. 01, 2016USD ($)
Leidos
Related Party Transaction [Line Items]
Renewal term ( in years)	1 year
Leidos, Inc.
Related Party Transaction [Line Items]
Credit facility, maturity date	2,018
Notes receivable	$ 1,600,000,000
Notes Which Mature In December 2020 | Leidos, Inc.
Related Party Transaction [Line Items]
Notes payable	$ 450,000,000
Stated interest rate (in percentage)	4.45%
Notes Which Mature In December 2040 | Leidos, Inc.
Related Party Transaction [Line Items]
Notes payable	$ 300,000,000
Stated interest rate (in percentage)	5.95%
Notes Which Mature In July 2033 | Leidos
Related Party Transaction [Line Items]
Notes payable	$ 300,000,000
Stated interest rate (in percentage)	5.50%
Notes Which Mature In July 2032 | Leidos
Related Party Transaction [Line Items]
Notes payable	$ 250,000,000
Stated interest rate (in percentage)	7.13%

Accumulated Other Comprehensi35

Accumulated Other Comprehensive Loss (Schedule of Accumulated Other Comprehensive Loss) (Detail) - USD ($) $ in Millions	Jul. 01, 2016	Jan. 01, 2016
Accumulated Other Comprehensive Loss [Abstract]
Foreign currency translation adjustments, net of taxes of $(3) million as of July 1, 2016	$ 4	$ 0
Unrecognized net loss on settled derivative instruments associated with outstanding debt, net of taxes of $3 million as of July 1, 2016, and January 1, 2016	(4)	(4)
Unrecognized net loss on defined benefit plan, net of taxes of $2 million and $3 million as of July 1, 2016, and January 1, 2016, respectively	(4)	(4)
Total accumulated other comprehensive loss, net of taxes of $2 million and $6 million as of July 1, 2016, and January 1, 2016, respectively	$ (4)	$ (8)

Accumulated Other Comprehensi36

Accumulated Other Comprehensive Loss (Schedule of Accumulated Other Comprehensive Loss) (Intext) (Detail) - USD ($) $ in Millions	Jul. 01, 2016	Jan. 01, 2016
Equity [Abstract]
Foreign currency translation adjustments, net of taxes of $(3) million as of July 1, 2016, tax	$ (3)	$ 0
Unrecognized net loss on settled derivative instruments associated with outstanding debt, net of taxes of $3 million as of July 1, 2016, and January 1, 2016, tax	3	3
Unrecognized net loss on defined benefit plan, net of taxes of $2 million and $3 million as of July 1, 2016, and January 1, 2016, tax	2	3
Total accumulated other comprehensive loss, net of taxes of $2 million and $6 million as of July 1, 2016, and January 1, 2016, respectively, tax	$ 2	$ 6

Restructuring Expenses (Details

Restructuring Expenses (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 01, 2016	Jul. 03, 2015	Jul. 01, 2016	Jul. 03, 2015
Facility Closing
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 1	$ 0	$ 1	$ 2
Restructuring reserve	$ 5		5
Rent paid			(3)
Decrease in restructuring reserve			$ (2)
Minimum [Member]
Restructuring Cost and Reserve [Line Items]
Period to settle restructuring liability (in years)			1 year

Earnings Per Share (EPS) (Recon

Earnings Per Share (EPS) (Reconciliation of Weighted Average Number of Shares Outstanding) (Detail) - shares shares in Millions	3 Months Ended		6 Months Ended
	Jul. 01, 2016	Jul. 03, 2015	Jul. 01, 2016	Jul. 03, 2015
Earnings Per Share [Abstract]
Basic weighted average number of shares outstanding (shares)	73	73	72	73
Dilutive common share equivalents-stock options and other stock awards	1	1	2	2
Diluted weighted average number of shares outstanding	74	74	74	75

Earnings Per Share (EPS) (Sched

Earnings Per Share (EPS) (Schedule of Stock-Based Awards Excluded from Weighted Average Shares Outstanding) (Detail) - shares shares in Millions	3 Months Ended		6 Months Ended
	Jul. 01, 2016	Jul. 03, 2015	Jul. 01, 2016	Jul. 03, 2015
Stock options and Vesting Stock Awards
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive stock based awards	1		1
Stock Options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive stock based awards		2		2
Vesting Stock Awards [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive stock based awards		1		1

Earnings Per Share (EPS) (Share

Earnings Per Share (EPS) (Shares Repurchased) (Details) - USD ($) shares in Millions	3 Months Ended	6 Months Ended
	Jul. 03, 2015	Jul. 01, 2016	Jul. 03, 2015
Equity, Class of Treasury Stock [Line Items]
Amount paid to repurchase outstanding shares		$ 19,000,000	$ 115,000,000
Accelerated Share Repurchase (ASR)
Equity, Class of Treasury Stock [Line Items]
Agreement to repurchase shares, amount	$ 100,000,000		$ 100,000,000
Number of shares repurchased and retired	2.4
Amount paid to repurchase outstanding shares	$ 100,000,000

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 01, 2016	Jul. 03, 2015	Jul. 01, 2016	Jul. 03, 2015
Operating Loss Carryforwards [Line Items]
Effective tax rate (percentage)	31.70%	28.80%	31.90%	20.00%
Tax Audits And Reviews
Operating Loss Carryforwards [Line Items]
Liabilities for uncertain tax positions	$ 11		$ 11
Other long-term liabilities	5		5
Unrecognized tax benefits	7		7
Accounting Standards Update 2016-09, Excess Tax Benefit Component | New Accounting Pronouncement, Early Adoption, Effect
Operating Loss Carryforwards [Line Items]
Effective income tax rate reconciliation, share-based compensation, excess tax benefit, amount	$ 3		$ 7

Business Segments (Schedule of

Business Segments (Schedule of Segment Reporting Information by Segment) (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 01, 2016	Jul. 03, 2015	Jul. 01, 2016	Jul. 03, 2015
Segment Reporting Information [Line Items]
Revenues	$ 1,288	$ 1,257	$ 2,600	$ 2,503
Operating income (loss)	$ 75	$ 64	$ 164	$ 102
Operating income margin (in percentage)	5.80%	5.10%	6.30%	4.10%
Segments | National Security Solutions
Segment Reporting Information [Line Items]
Revenues	$ 915	$ 879	$ 1,813	$ 1,741
Operating income (loss)	$ 61	$ 74	$ 133	$ 136
Operating income margin (in percentage)	6.70%	8.40%	7.30%	7.80%
Segments | Health and Infrastructure Sector
Segment Reporting Information [Line Items]
Revenues	$ 373	$ 379	$ 787	$ 764
Operating income (loss)	$ 39	$ (7)	$ 75	$ (14)
Operating income margin (in percentage)	10.50%	(1.80%)	9.50%	(1.80%)
Segments | Corporate and Other
Segment Reporting Information [Line Items]
Revenues	$ 0	$ (1)	$ 0	$ (2)
Operating income (loss)	$ (25)	$ (3)	$ (44)	$ (20)

Legal Proceedings - Additional

Legal Proceedings - Additional Information (Detail) $ in Millions	1 Months Ended		3 Months Ended	6 Months Ended
	Jun. 30, 2014plaintiff	May 31, 2014plaintiff	Apr. 30, 2012LegalMatterexecutive	Jul. 01, 2016USD ($)	Jul. 31, 2013USD ($)	Nov. 30, 2008USD ($)
Securities Class Actions
Legal Proceedings [Line Items]
Number of lawsuits | LegalMatter			3
Number of lawsuits, withdrawn | LegalMatter			1
Number of lawsuits, consolidated | LegalMatter			2
Number of former Chief Executive Officers | executive			2
Greek Government Contract
Legal Proceedings [Line Items]
Arbitral award				$ 21	$ 43
Recorded losses				123
Receivable				2
Greek Government Contract | Invoice for Undisputed Portion of Contract
Legal Proceedings [Line Items]
Contracts receivable						$ 15
Greek Government Contract | Value Added Taxes
Legal Proceedings [Line Items]
Contracts receivable				28
Greek Government Contract | Letters of Credit Relating to Delivery
Legal Proceedings [Line Items]
Letter of credit available to the company				16
Greek Government Contract | Standby Letters of Credit
Legal Proceedings [Line Items]
Letter of credit available to the company				18
Greek Government Contract | Letters Of Credit Related System Support And Maintenance | Letters of Credit Relating to Delivery
Legal Proceedings [Line Items]
Amount outstanding				$ 4
Data Privacy Litigation
Legal Proceedings [Line Items]
Number of plaintiffs | plaintiff	2	2

Other Commitments and Conting44

Other Commitments and Contingencies - Additional Information (Detail) $ in Millions	Feb. 03, 2016USD ($)patent	Nov. 30, 2012USD ($)patent	Jul. 01, 2016USD ($)
Tax Audits And Reviews
Other Commitments And Contingencies [Line Items]
Liabilities for uncertain tax positions			$ 11
Other long-term liabilities			5
Unrecognized tax benefits			7
Standby Letters of Credit
Other Commitments And Contingencies [Line Items]
Amount outstanding			60
Performance Guarantee
Other Commitments And Contingencies [Line Items]
Surety bonds			$ 136
Virnet X Inc
Other Commitments And Contingencies [Line Items]
Patents transferred and awarded	$ 626	$ 368
Number of patents found infringed upon | patent	4	2
Leidos
Other Commitments And Contingencies [Line Items]
Litigation settlement, percentage of total litigation (in percentage)	25.00%