Leidos (LDOS) 10-Q 4 May 21 2021 Q1 Quarterly report Financial data

Cover Page

Cover Page - shares	3 Months Ended
	Apr. 02, 2021	Apr. 26, 2021
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Apr. 2, 2021
Document Transition Report	false
Entity File Number	001-33072
Entity Registrant Name	Leidos Holdings, Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	20-3562868
Entity Address, Address Line One	1750 Presidents Street,
Entity Address, City or Town	Reston,
Entity Address, State or Province	VA
Entity Address, Postal Zip Code	20190
City Area Code	571
Local Phone Number	526-6000
Title of 12(b) Security	Common stock, par value $.0001 per share
Trading Symbol	LDOS
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		141,420,159
Amendment Flag	false
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q1
Entity Central Index Key	0001336920
Current Fiscal Year End Date	--12-31

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) - USD ($) $ in Millions	Apr. 02, 2021	Jan. 01, 2021
Assets:
Cash and cash equivalents	$ 377	$ 524
Receivables, net	2,160	2,137
Inventory, net	268	276
Other current assets	452	402
Total current assets	3,257	3,339
Property, plant and equipment, net	655	604
Intangible assets, net	1,234	1,216
Goodwill	6,456	6,313
Operating lease right-of-use assets, net	584	581
Other assets	452	458
Total assets	12,638	12,511
Liabilities:
Accounts payable and accrued liabilities	2,133	2,175
Accrued payroll and employee benefits	684	632
Long-term debt, current portion	103	100
Total current liabilities	2,920	2,907
Long-term debt, net of current portion	4,663	4,644
Operating lease liabilities	557	564
Deferred tax liabilities	243	234
Other long-term liabilities	275	291
Total liabilities	8,658	8,640
Commitments and contingencies (Note 11)
Stockholders’ equity:
Common stock, $0.0001 par value, 500 million shares authorized, 141 million and 142 million shares issued and outstanding at April 2, 2021 and January 1, 2021, respectively	0	0
Additional paid-in capital	2,486	2,580
Retained earnings	1,484	1,328
Accumulated other comprehensive loss	(37)	(46)
Total Leidos stockholders’ equity	3,933	3,862
Non-controlling interest	47	9
Total stockholders' equity	3,980	3,871
Total liabilities and stockholders' equity	$ 12,638	$ 12,511

CONDENSED CONSOLIDATED BALANC_2

CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) (Parenthetical) - $ / shares	Apr. 02, 2021	Jan. 01, 2021
Statement of Financial Position [Abstract]
Common stock, par value (dollars per share)	$ 0.0001	$ 0.0001
Common stock, shares authorized (in shares)	500,000,000	500,000,000
Common stock, shares issued (in shares)	141,000,000	142,000,000
Common stock, shares outstanding (in shares)	141,000,000	142,000,000

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED) - USD ($) $ in Millions	3 Months Ended
	Apr. 02, 2021	Apr. 03, 2020
Income Statement [Abstract]
Revenues	$ 3,315	$ 2,889
Cost of revenues	2,848	2,494
Selling, general and administrative expenses	159	197
Acquisition, integration and restructuring costs	5	12
Equity earnings of non-consolidated subsidiaries	(5)	(6)
Operating income	308	192
Non-operating expense:
Interest expense, net	(45)	(48)
Other expense, net	(1)	(14)
Income before income taxes	262	130
Income tax expense	(57)	(15)
Net income attributable to Leidos common stockholders	$ 205	$ 115
Earnings per share:
Basic (dollars per share)	$ 1.44	$ 0.81
Diluted (dollars per share)	$ 1.42	$ 0.80

CONDENSED CONSOLIDATED STATEM_2

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($) $ in Millions	3 Months Ended
	Apr. 02, 2021	Apr. 03, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 205	$ 115
Foreign currency translation adjustments	(4)	(74)
Unrecognized gain (loss) on derivative instruments	13	(42)
Pension adjustments	0	1
Total other comprehensive income (loss), net of taxes	9	(115)
Comprehensive income attributable to Leidos common stockholders	$ 214	$ 0

CONDENSED CONSOLIDATED STATEM_3

CONDENSED CONSOLIDATED STATEMENTS OF EQUITY (UNAUDITED) - USD ($) shares in Millions, $ in Millions	Total	Cumulative Effect, Period of Adoption, Adjustment	Cumulative Effect, Period of Adoption, Adjusted Balance	Shares of common stock	Additional paid-in capital	Additional paid-in capitalCumulative Effect, Period of Adoption, Adjusted Balance	Retained earnings	Retained earningsCumulative Effect, Period of Adoption, Adjustment	Retained earningsCumulative Effect, Period of Adoption, Adjusted Balance	Accumulated other comprehensive loss	Accumulated other comprehensive lossCumulative Effect, Period of Adoption, Adjusted Balance	Leidos Holdings, Inc. stockholders' equity	Leidos Holdings, Inc. stockholders' equityCumulative Effect, Period of Adoption, Adjustment	Leidos Holdings, Inc. stockholders' equityCumulative Effect, Period of Adoption, Adjusted Balance	Non-controlling interest	Non-controlling interestCumulative Effect, Period of Adoption, Adjusted Balance
Beginning balance (shares) at Jan. 03, 2020				141
Beginning Balance at Jan. 03, 2020	$ 3,417	$ (1)	$ 3,416		$ 2,587	$ 2,587	$ 896	$ (1)	$ 895	$ (70)	$ (70)	$ 3,413	$ (1)	$ 3,412	$ 4	$ 4
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	115						115					115
Other comprehensive income (loss), net of taxes	(115)									(115)		(115)
Issuances of stock (shares)				1
Issuances of stock	9				9							9
Repurchases of stock and other	(32)				(32)							(32)
Dividends	(49)						(49)					(49)
Stock-based compensation	15				15							15
Ending balance (shares) at Apr. 03, 2020				142
Ending Balance at Apr. 03, 2020	3,359				2,579		961			(185)		3,355			4
Beginning balance (shares) at Jan. 01, 2021				142
Beginning Balance at Jan. 01, 2021	3,871				2,580		1,328			(46)		3,862			9
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	205						205					205
Other comprehensive income (loss), net of taxes	9									9		9
Issuances of stock	14				14							14
Repurchases of stock and other (in shares)				(1)
Repurchases of stock and other	(123)				(123)							(123)
Dividends	(49)						(49)					(49)
Stock-based compensation	15				15							15
Capital contributions from non-controlling interests	38														38
Ending balance (shares) at Apr. 02, 2021				141
Ending Balance at Apr. 02, 2021	$ 3,980				$ 2,486		$ 1,484			$ (37)		$ 3,933			$ 47

CONDENSED CONSOLIDATED STATEM_4

CONDENSED CONSOLIDATED STATEMENTS OF EQUITY (UNAUDITED) (Parenthetical) - $ / shares	3 Months Ended
	Apr. 02, 2021	Apr. 03, 2020
Statement of Stockholders' Equity [Abstract]
Dividends (in dollars per share)	$ 0.34	$ 0.34

CONDENSED CONSOLIDATED STATEM_5

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Millions	3 Months Ended
	Apr. 02, 2021	Apr. 03, 2020
Cash flows from operations:
Net income	$ 205	$ 115
Adjustments to reconcile net income to net cash provided by operations:
Depreciation and amortization	77	61
Stock-based compensation	15	15
Deferred income taxes	0	2
Other	(8)	28
Change in assets and liabilities, net of effects of acquisitions:
Receivables	(10)	89
Other current assets and other long-term assets	5	(43)
Accounts payable and accrued liabilities and other long-term liabilities	(148)	25
Accrued payroll and employee benefits	50	68
Income taxes receivable/payable	53	12
Net cash provided by operating activities	239	372
Cash flows from investing activities:
Acquisition of businesses, net of cash acquired	(218)	(1,642)
Payments for property, equipment and software	(26)	(44)
Other	0	1
Net cash used in investing activities	(244)	(1,685)
Cash flows from financing activities:
Proceeds from debt issuance	0	3,175
Payments of long-term debt	(26)	(1,927)
Payments for debt issuance costs	0	(12)
Dividend payments	(50)	(51)
Repurchases of stock and other	(123)	(32)
Capital contributions from non-controlling interests	38	0
Proceeds from issuances of stock	13	8
Net cash (used in) provided by financing activities	(148)	1,161
Net decrease in cash, cash equivalents and restricted cash	(153)	(152)
Cash, cash equivalents and restricted cash at beginning of period	687	717
Cash, cash equivalents and restricted cash at end of period	534	565
Cash and cash equivalents at end of period	377	445
Supplementary cash flow information:
Cash paid for income taxes, net of refunds	8	0
Cash paid for interest	35	27
Property, plant and equipment additions	0	13
Finance lease obligations	$ 45	$ 6

Basis of Presentation and Summa

Basis of Presentation and Summary of Significant Accounting Policies	3 Months Ended
	Apr. 02, 2021
Accounting Policies [Abstract]
Basis of Presentation and Summary of Significant Accounting Policies	Note 1–Basis of Presentation and Summary of Significant Accounting Policies Nature of Operations and Basis of Presentation Leidos Holdings, Inc. ("Leidos"), a Delaware corporation, is a holding company whose direct 100%-owned subsidiary and principal operating company is Leidos, Inc. Leidos is a FORTUNE 500 ® science, engineering and information technology company that provides services and solutions in the defense, intelligence, civil and health markets, both domestically and internationally. Leidos' customers include the U.S. Department of Defense ("DoD"), the U.S. Intelligence Community, the U.S. Department of Homeland Security, the Federal Aviation Administration, the Department of Veterans Affairs and many other U.S. civilian, state and local government agencies as well as foreign government agencies. Unless indicated otherwise, references to "we," "us" and "our" refer collectively to Leidos Holdings, Inc. and its consolidated subsidiaries. We operate in three reportable segments: Defense Solutions, Civil and Health. Additionally, we separately present the unallocable costs associated with corporate functions as Corporate. We have a controlling interest in Mission Support Alliance, LLC ("MSA"), a joint venture with Centerra Group, LLC. We also have a controlling interest in Hanford Mission Integration Solutions, LLC ("HMIS"), the legal entity for the follow-on contract to MSA's contract and a joint venture with Centerra Group, LLC and Parsons Government Services, Inc. The financial results for MSA and HMIS are consolidated into our unaudited condensed consolidated financial statements. The unaudited condensed consolidated financial statements also include the balances of all voting interest entities in which Leidos has a controlling voting interest ("subsidiaries") and a variable interest entity ("VIE") in which Leidos is the primary beneficiary. The consolidated balances of the VIE are not material to the unaudited condensed consolidated financial statements for the periods presented. Intercompany accounts and transactions between consolidated companies 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 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 estimated profitability of long-term contracts, indirect billing rates, allowances for doubtful accounts, inventories, right-of-use assets and lease liabilities, fair value and impairment of intangible assets and goodwill, income taxes, stock-based compensation expense and contingencies. These 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. 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 notes thereto included in the Annual Report on Form 10-K filed on February 23, 2021. Accounting Standards Updates ("ASU") Adopted ASU 2020-06, Debt – Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging – Contracts in Entity's Own Equity (Subtopic 815-40) In August 2020, the Financial Accounting Standards Board ("FASB") issued ASU 2020-06 which simplifies the accounting for convertible debt and convertible preferred stock by removing the requirements to separate embedded conversion features from the host convertible instruments. Additionally, the amendments in this update simplify the guidance in Subtopic 815-40 by removing certain criteria that must be satisfied in order to classify a contract as equity. This update also improves the consistency of earnings per share calculations by requiring an entity to use the if-converted method of calculating diluted earnings per share rather than the treasury stock method for convertible instruments and also by requiring the inclusion of the potential effect of shares settled in cash or shares in the diluted earnings per share calculation. The amendments in this update are effective for public entities for fiscal years beginning after December 15, 2021, and adopted using either a fully or modified retrospective approach. Early adoption is permitted, but no earlier than fiscal years beginning after December 15, 2020. Entities should adopt the guidance as of the beginning of the fiscal year of adoption and cannot adopt the guidance in an interim reporting period. Effective January 2, 2021, we adopted the requirements of ASU 2020-06 using the modified retrospective method. The adoption did not have an impact to our financial position, results of operations and earnings per share. Accounting Standards Updates Issued But Not Yet Adopted ASU 2020-04 and ASU 2021-01, Reference Rate Reform (Topic 848) In March 2020, the FASB issued ASU 2020-04 which provides companies with optional expedients and exceptions to ease the potential accounting burden associated with transitioning away from reference rates that are expected to be discontinued. This update provides optional expedients for applying accounting guidance to contracts, hedging relationships and other transactions that reference the London Interbank Offered Rate ("LIBOR") or another reference rate expected to be discontinued because of the reference rate reform. The amendments in this update are effective for all entities as of March 2020 and can be adopted using a prospective approach no later than December 31, 2022. In January 2021, the FASB issued ASU 2021-01 which amends the scope of ASU 2020-04. The amendments in this update are elective and provide optional relief for entities with hedge accounting and contract modifications affected by the discounting transition through December 31, 2022. Under this relief, entities may continue to account for contract modifications as a continuation of the existing contract and the continuation of the hedge accounting arrangement. We are currently evaluating the impacts of reference rate reform. We currently use the one-month LIBOR for which the rate publication will cease in June 2023. Changes in Estimates on Contracts Changes in estimates related to contracts accounted for using the cost-to-cost method of accounting are recognized in the period in which such changes are made for the inception-to-date effect of the changes, with the exception of contracts acquired through a business combination, where the adjustment is made for the period commencing from the date of acquisition. Changes in estimates on contracts were as follows: Three Months Ended April 2, April 3, (in millions, except per share amounts) Favorable impact $ 31 $ 24 Unfavorable impact (19) (7) Net impact to income before income taxes $ 12 $ 17 Impact on diluted EPS attributable to Leidos common stockholders $ 0.06 $ 0.09 The impact on diluted earnings per share ("EPS") attributable to Leidos common stockholders is calculated using the statutory tax rate. Revenue Recognized from Prior Obligations Revenue recognized from performance obligations satisfied in previous periods was $9 million and $20 million for the three months ended April 2, 2021 and April 3, 2020, respectively. The changes primarily relate to revisions of variable consideration including award and incentive fees, and revisions to estimates at completion resulting from changes in contract scope, mitigation of contract risks or true-ups of contract estimates at the end of contract performance. Cash and Cash Equivalents Our cash equivalents are primarily comprised of investments in several large institutional money market accounts, with original maturity of three months or less. Outstanding payments are included within "Cash and cash equivalents" and "Accounts payable and accrued liabilities" correspondingly on the condensed consolidated balance sheets. At April 2, 2021 and January 1, 2021, $193 million and $237 million, respectively, of outstanding payments were included within "Cash and cash equivalents." Restricted Cash We have restricted cash balances, primarily representing advances from customers that are restricted as to use for certain expenditures related to that customer's contract and cash collected from the sale of accounts receivable but not yet remitted to the financial institution (see "Note 9–Sale of Accounts Receivable"). Restricted cash balances are included as "Other current assets" in the condensed consolidated balance sheets. Our restricted cash balances were $157 million and $163 million at April 2, 2021 and January 1, 2021, respectively.

Revenues from Contracts with Cu

Revenues from Contracts with Customers	3 Months Ended
	Apr. 02, 2021
Revenue from Contract with Customer [Abstract]
Revenues from Contracts with Customers	Note 2–Revenues from Contracts with Customers Remaining Performance Obligations Remaining performance obligations ("RPO") represent the expected value of exercised contracts, both funded and unfunded, less revenue recognized to date. Remaining performance obligations do not include unexercised option periods and future potential task orders expected to be awarded under indefinite delivery/indefinite quantity ("IDIQ") contracts, General Services Administration Schedule or other master agreement contract vehicles, with the exception of certain IDIQ contracts where task orders are not competitively awarded and separately priced but instead are used as a funding mechanism, and where there is a basis for estimating future revenues and funding on future anticipated task orders. As of April 2, 2021, we had $16.0 billion of RPO and expect to recognize approximately 51% and 82% over the next 12 months and 24 months, respectively, with the remainder to be recognized thereafter. Disaggregation of Revenues We disaggregate revenues by customer-type, contract-type and geographic location for each of our reportable segments. These categories represent how the nature, timing and uncertainty of revenues and cash flows are affected. Disaggregated revenues by customer-type were as follows: Three Months Ended April 2, 2021 Defense Solutions Civil Health Total (in millions) DoD and U.S. Intelligence Community $ 1,407 $ 13 $ 158 $ 1,578 Other government agencies (1) 272 605 407 1,284 Commercial and non-U.S. customers 278 125 26 429 Total $ 1,957 $ 743 $ 591 $ 3,291 Three Months Ended April 3, 2020 Defense Solutions Civil Health Total (in millions) DoD and U.S. Intelligence Community $ 1,285 $ 17 $ 124 $ 1,426 Other government agencies (1) 208 544 375 1,127 Commercial and non-U.S. customers 212 71 28 311 Total $ 1,705 $ 632 $ 527 $ 2,864 (1) Includes federal government agencies other than the DoD and U.S. Intelligence Community, as well as state and local government agencies. Disaggregated revenues by contract-type were as follows: Three Months Ended April 2, 2021 Defense Solutions Civil Health Total (in millions) Cost-reimbursement and fixed-price-incentive-fee $ 1,163 $ 374 $ 99 $ 1,636 Firm-fixed-price 553 262 392 1,207 Time-and-materials and fixed-price-level-of-effort 241 107 100 448 Total $ 1,957 $ 743 $ 591 $ 3,291 Three Months Ended April 3, 2020 Defense Solutions Civil Health Total (in millions) Cost-reimbursement and fixed-price-incentive-fee $ 1,094 $ 346 $ 65 $ 1,505 Firm-fixed-price 440 173 373 986 Time-and-materials and fixed-price-level-of-effort 171 113 89 373 Total $ 1,705 $ 632 $ 527 $ 2,864 Disaggregated revenues by geographic location were as follows: Three Months Ended April 2, 2021 Defense Solutions Civil Health Total (in millions) United States $ 1,713 $ 704 $ 591 $ 3,008 International 244 39 — 283 Total $ 1,957 $ 743 $ 591 $ 3,291 Three Months Ended April 3, 2020 Defense Solutions Civil Health Total (in millions) United States $ 1,513 $ 619 $ 527 $ 2,659 International 192 13 — 205 Total $ 1,705 $ 632 $ 527 $ 2,864 Revenues by customer-type, contract-type and geographic location exclude lease income of $24 million and $25 million for the three months ended April 2, 2021 and April 3, 2020, respectively. Contract Assets and Liabilities Performance obligations are satisfied either over time as work progresses or at a point in time. FFP contracts are typically billed to the customer using milestone payments while cost-reimbursable and T&M contracts are typically billed to the customer on a monthly or bi-weekly basis as indicated by the negotiated billing terms and conditions of the contract. As a result, the timing of revenue recognition, customer billings and cash collections for each contract results in a net contract asset or liability at the end of each reporting period. Contract assets consist of unbilled receivables, which is the amount of revenue recognized that exceeds the amount billed to the customer, where right to payment is not solely subject to the passage of time. Unbilled receivables exclude amounts billable where the right to consideration is unconditional. Contract liabilities consist of deferred revenue. The components of contract assets and contract liabilities consisted of the following: Balance sheet line item April 2, January 1, (in millions) Contract assets - current: Unbilled receivables Receivables, net $ 943 $ 906 Contract liabilities - current: Deferred revenue Accounts payable and accrued liabilities $ 433 $ 481 Contract liabilities - non-current: Deferred revenue Other long-term liabilities $ 18 $ 20 The decrease in deferred revenue was primarily due to revenue recognized during the period, partially offset by new milestone billings on certain contracts. Revenue recognized for the three months ended April 2, 2021 of $144 million was included as a contract liability at January 1, 2021. Revenue recognized for the three months ended April 3, 2020 of $145 million was included as a contract liability at January 3, 2020.

Acquisitions, Goodwill, and Int

Acquisitions, Goodwill, and Intangible Assets	3 Months Ended
	Apr. 02, 2021
Business Combinations [Abstract]
Acquisitions, Goodwill, and Intangible Assets	Note 3–Acquisitions, Goodwill and Intangible Assets 1901 Group, LLC ("1901 Group") Acquisition On January 14, 2021 (the "Closing Date"), we completed the acquisition of 1901 Group, LLC (the "1901 Group") for preliminary purchase consideration of $214 million, net of $2 million of cash acquired. The preliminary goodwill recognized of $140 million represents intellectual capital and the acquired assembled workforce, none of which qualify for recognition as separate intangible assets. Of the goodwill recognized, $118 million is tax deductible. The following table summarizes the preliminary fair value of intangible assets acquired at the Closing Date and the related weighted average amortization period: Weighted average amortization period Fair value (in years) (in millions) Programs 11 $ 40 Backlog 1 1 Technology 7 28 Total 9 $ 69 The preliminary fair value and related weighted average amortization period of the intangible assets acquired were based on an industry benchmarking analysis surrounding recent and relevant industry transactions. The difference between the benchmark estimate and ultimate fair value of intangible assets identified may be material. As of April 2, 2021, we had not finalized the determination of fair values allocated to assets and liabilities, including, but not limited to intangible assets, accounts receivables, accounts payable and accrued liabilities. For the three months ended April 2, 2021, $13 million of revenue related to the 1901 Group was recognized within the Defense Solutions reportable segment. SD&A Businesses Acquisition On May 4, 2020 (the "Transaction Date"), we completed the acquisition of L3Harris Technologies' security detection and automation businesses (the "SD&A Businesses"). The SD&A Businesses were acquired for cash consideration of $1,020 million, net of $26 million of cash acquired. The purchase consideration includes the initial cash payment of $1,015 million, plus a $31 million payment for contractual net working capital acquired. The SD&A Businesses provide airport and critical infrastructure screening products, automated tray return systems and other industrial automation products. The addition of the SD&A Businesses expands the scope and scale of our global security detection and automation offerings. The fair values of the assets acquired and liabilities assumed at the Transaction Date were as follows (in millions): Cash $ 26 Receivables 130 Inventory 106 Other current assets 29 Operating lease right-of-use assets 35 Property, plant and equipment 32 Intangible assets 355 Accounts payable and accrued liabilities (135) Accrued payroll and employee benefits (8) Operating lease liabilities (32) Deferred tax liabilities (52) Other long-term liabilities (13) Total identifiable net assets acquired 473 Goodwill 573 Purchase price $ 1,046 As of April 2, 2021, we had substantially completed the determination of fair values of the acquired assets and liabilities assumed. The fair values not yet finalized primarily related to inventory and deferred taxes. The goodwill represents intellectual capital and the acquired assembled workforce. Of the goodwill recognized, $420 million is deductible for tax purposes. The following table summarizes the fair value of intangible assets acquired at the Transaction Date and the related weighted average amortization period: Weighted average amortization period Fair value (in years) (in millions) Programs 13 $ 141 Customer relationships 10 49 Technology 10 73 In-process research and development ("IPR&D") (1) 92 Total 11 $ 355 (1) IPR&D assets are indefinite-lived at the acquisition date until placed into service, at which time such assets will be reclassified to a finite-lived amortizable intangible asset. For the three months ended April 2, 2021, $72 million of revenues related to the SD&A Businesses were recognized within the Civil reportable segment. Dynetics Acquisition On January 31, 2020 (the "Acquisition Date"), we completed our acquisition of Dynetics, an industry-leading applied research and national security solutions company. The addition of Dynetics will accelerate opportunities within our innovation engine that researches and develops new technologies and solutions to address the most challenging needs of our customers. All of the issued and outstanding shares of common stock of Dynetics were purchased for $1.64 billion, net of cash acquired. The final fair values of the assets acquired and liabilities assumed at the Acquisition Date were as follows (in millions): Cash $ 18 Receivables 158 Inventory 47 Other current assets 18 Operating lease right-of-use assets 25 Property, plant and equipment 172 Intangible assets 528 Other assets 8 Accounts payable and accrued liabilities (50) Accrued payroll and employee benefits (29) Operating lease liabilities (20) Other long-term liabilities (4) Total identifiable net assets acquired 871 Goodwill 789 Purchase price $ 1,660 As of January 31, 2021, we had completed the determination of fair values of the acquired assets and liabilities assumed. The goodwill represents intellectual capital and the acquired assembled workforce. All of the goodwill recognized is deductible for tax purposes. The following table summarizes the final fair value of intangible assets acquired at the Acquisition Date and the related weighted average amortization period: Weighted average amortization period Fair value (in years) (in millions) Programs 13 $ 485 Backlog 1 32 Technology 11 11 Total 12 $ 528 For the three months ended April 2, 2021 and April 3, 2020, $298 million and $129 million, respectively, of revenues related to Dynetics were recognized within the Defense Solutions reportable segment. Acquisition and Integration Costs The following expenses were incurred related to the acquisitions of Dynetics, the SD&A Businesses, and 1901 Group: Three Months Ended April 2, April 3, (in millions) Acquisition costs $ — $ 8 Integration costs 5 1 Total acquisition and integration costs $ 5 $ 9 These acquisition and integration costs are recorded within Corporate and presented in "Acquisition, integration and restructuring costs" on the condensed consolidated statements of income. Pro Forma Financial Information The following unaudited pro forma financial information presents consolidated results of operations as if the acquisitions of Dynetics and the SD&A Businesses had occurred on December 29, 2018. The pro forma financial information was prepared based on historical financial information and has been adjusted to give effect to the events that are directly attributable to the acquisitions of Dynetics and the SD&A Businesses and are factually supportable. The unaudited pro forma results below do not reflect future events that have occurred or may occur after the acquisitions, including anticipated synergies or other expected benefits that may be realized from the acquisitions. The pro forma information is not intended to reflect the actual results of operations that would have occurred if the acquisitions had been completed on December 29, 2018, nor is it intended to be an indication of future operating results. Three Months Ended April 3, (in millions, except per share amounts) Revenues $ 3,080 Net income attributable to Leidos common stockholders 121 Earnings per share: Basic $ 0.85 Diluted 0.84 The unaudited pro forma financial information above includes the following nonrecurring significant adjustment made to account for certain costs incurred as if the acquisitions had been completed on December 29, 2018: • Acquisition-related costs of $8 million for the three months ended April 3, 2020 were excluded within the pro forma financial information for fiscal 2020 and were included within the supplemental pro forma earnings for fiscal 2019. Goodwill The following table presents changes in the carrying amount of goodwill by reportable segment: Defense Solutions Civil Health Total (in millions) Goodwill at January 3, 2020 $ 2,039 $ 1,907 $ 966 $ 4,912 Goodwill re-allocation 429 (429) — — Acquisition of Dynetics and the SD&A Businesses 788 569 — 1,357 Foreign currency translation adjustments 44 — — 44 Goodwill at January 1, 2021 3,300 2,047 966 6,313 Acquisition of Dynetics, the SD&A Businesses and 1901 Group 141 4 — 145 Foreign currency translation adjustments (2) — — (2) Goodwill at April 2, 2021 $ 3,439 $ 2,051 $ 966 $ 6,456 There were no goodwill impairments during the three months ended April 2, 2021 and April 3, 2020. Intangible Assets Intangible assets, net consisted of the following: April 2, 2021 January 1, 2021 Gross carrying value Accumulated amortization Net carrying value Gross carrying value Accumulated amortization Net carrying value (in millions) Finite-lived intangible assets: Programs $ 1,673 $ (731) $ 942 $ 1,632 $ (687) $ 945 Software and technology 218 (106) 112 188 (100) 88 Customer relationships 94 (12) 82 93 (10) 83 Backlog 33 (32) 1 32 (29) 3 Trade names 1 — 1 1 — 1 Total finite-lived intangible assets 2,019 (881) 1,138 1,946 (826) 1,120 Indefinite-lived intangible assets: In-process research and development 92 — 92 92 — 92 Trade names 4 — 4 4 — 4 Total indefinite-lived intangible assets 96 — 96 96 — 96 Total intangible assets $ 2,115 $ (881) $ 1,234 $ 2,042 $ (826) $ 1,216 Amortization expense was $55 million and $43 million for the three months ended April 2, 2021 and April 3, 2020, respectively. Program intangible assets are amortized over their respective estimated useful lives in proportion to the pattern of economic benefit based on expected future discounted cash flows. Backlog and trade name intangible assets are amortized on a straight-line basis over their estimated useful lives. Customer relationships and software and technology intangible assets are amortized either on a straight-line basis over their estimated useful lives or over their respective estimated useful lives in proportion to the pattern of economic benefit based on expected future discounted cash flows, as deemed appropriate. The estimated annual amortization expense as of April 2, 2021, was as follows: Fiscal year ending (in millions) 2021 (remainder of year) $ 157 2022 207 2023 182 2024 134 2025 110 2026 and thereafter 348 $ 1,138

Fair Value Measurements

Fair Value Measurements	3 Months Ended
	Apr. 02, 2021
Fair Value Disclosures [Abstract]
Fair Value Measurements	Note 4–Fair Value Measurements The accounting standard for fair value measurements establishes a three-level fair 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 for identical assets or liabilities that are observable either directly or indirectly or quoted prices that are not active (Level 2); and unobservable inputs in which there is little or no market data (e.g., discounted cash flow and other similar pricing models), which requires us to develop our own assumptions about the assumptions that market participants would use in pricing the asset or liability (Level 3). The financial instruments measured at fair value on a recurring basis primarily consisted of the following: April 2, 2021 January 1, 2021 Carrying value Fair value Carrying value Fair value (in millions) Financial liabilities: Derivatives $ 82 $ 82 $ 103 $ 103 As of April 2, 2021, our derivatives primarily consisted of the cash flow interest rate swaps on $1.1 billion of the variable rate senior unsecured term loan (see "Note 5–Derivative Instruments"). The fair value of the cash flow interest rate swaps is determined based on observed values for underlying interest rates on the LIBOR yield curve and the underlying interest rate (Level 2 inputs). The carrying amounts of our financial instruments, other than derivatives, which include cash equivalents, accounts receivable, accounts payable and accrued expenses, are reasonable estimates of their related fair values. The carrying value of our notes receivable of $15 million as of April 2, 2021, and January 1, 2021, approximates fair value as the stated interest rates within the agreements are consistent with current market rates used in notes with similar terms in the market (Level 2 inputs). As of April 2, 2021, and January 1, 2021, the fair value of debt was $5.1 billion and $5.2 billion, respectively, and the carrying amount was $4.8 billion and $4.7 billion, respectively (see "Note 6–Debt"). The fair value of long-term debt is determined based on current interest rates available for debt with terms and maturities similar to our existing debt arrangements (Level 2 inputs). On January 14, 2021, May 4, 2020 and January 31, 2020, non-financial instruments measured at fair value on a non-recurring basis were recorded in connection with the acquisitions of 1901 Group, SD&A Businesses and Dynetics, respectively (see "Note 3–Acquisitions, Goodwill and Intangible Assets"). The fair values of the assets acquired and liabilities assumed were determined using Level 3 inputs. As of April 2, 2021, we did not have any assets or liabilities measured at fair value on a non-recurring basis.

Derivative Instruments

Derivative Instruments	3 Months Ended
	Apr. 02, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments	Note 5–Derivative Instruments We manage our risk to changes in interest rates through the use of derivative instruments. We do not hold derivative instruments for trading or speculative purposes. For variable rate borrowings, we use fixed interest rate swaps, effectively converting a portion of the variable interest rate payments to fixed interest rate payments. These swaps are designated as cash flow hedges. The fair value of the interest rate swaps was as follows: Liability derivatives Balance sheet line item April 2, January 1, (in millions) Cash flow interest rate swaps Other long-term liabilities $ 82 $ 103 The cash flows associated with the interest rate swaps are classified as operating activities in the condensed consolidated statements of cash flows. Cash Flow Hedges We have interest rate swap agreements to hedge the cash flows of $1.1 billion of the variable rate senior unsecured term loan (the "Variable Rate Loan"). These interest rate swap agreements have a maturity date of August 2025 and a fixed interest rate of 3.00%. The objective of these instruments is to reduce variability in the forecasted interest payments of the Variable Rate Loan, which are based on the LIBOR rate. Under the terms of the interest rate swap agreements, we will receive monthly variable interest payments based on the one-month LIBOR rate and will pay interest at a fixed rate. The interest rate swap transactions were accounted for as cash flow hedges. The gain/loss on the swaps is reported as a component of other comprehensive loss and is reclassified into earnings when the interest payments on the underlying hedged items impact earnings. A qualitative assessment of hedge effectiveness is performed on a quarterly basis, unless facts and circumstances indicate the hedge may no longer be highly effective. The effect of the cash flow hedges on other comprehensive loss and earnings for the periods presented was as follows: Three Months Ended April 2, April 3, (in millions) Total interest expense, net presented in the condensed consolidated statements of income in which the effects of cash flow hedges are recorded $ 45 $ 48 Amount recognized in other comprehensive income (loss) $ 12 $ (55) Amount reclassified from accumulated other comprehensive loss to interest expense, net $ 5 $ — We expect to reclassify net losses of $18 million from accumulated other comprehensive loss into earnings during the next 12 months.

Debt

Debt	3 Months Ended
	Apr. 02, 2021
Debt Disclosure [Abstract]
Debt	Note 6–Debt Our debt consisted of the following: Stated interest rate Effective interest rate April 2, 2021 (1) January 1, 2021 (1) (in millions) Senior unsecured term loans: $1,925 million Term Loan, due January 2025 1.49% 1.75% 1,368 1,391 Senior unsecured notes: $500 million notes, due May 2023 2.95% 3.17% 497 497 $500 million notes, due May 2025 3.63% 3.76% 496 496 $750 million notes due May 2030 4.38% 4.50% 737 737 $1,000 million notes, due February 2031 2.30% 2.38% 989 989 $250 million notes, due July 2032 7.13% 7.43% 247 247 $300 million notes, due July 2033 5.50% 5.88% 158 158 $300 million notes, due December 2040 5.95% 6.03% 216 216 Notes payable and finance leases due on various dates through fiscal 2032 1.84%-5.49% Various 58 13 Total long-term debt 4,766 4,744 Less: current portion (103) (100) Total long-term debt, net of current portion $ 4,663 $ 4,644 (1) The carrying amounts of the senior term loans and notes as of April 2, 2021, and January 1, 2021, include the remaining principal outstanding of $4,758 million and $4,782 million, respectively, less total unamortized debt discounts and deferred debt issuances costs of $50 million and $51 million, respectively. Term Loans and Revolving Credit Facility We have a Credit Agreement (the "Credit Agreement") with certain financial institutions, which provided for a senior unsecured term loan facility in an aggregate principal amount of $1.9 billion (the "Term Loan Facility") and a $750 million senior unsecured revolving facility (the "Revolving Facility"). Borrowings under the Credit Agreement bear interest at a rate determined, at our option, based on either an alternate base rate or a LIBOR rate plus, in each case, an applicable margin that varies depending on our credit rating. The applicable margin range for LIBOR-denominated borrowings is from 1.13% to 1.75%. Based on our current ratings, the applicable margin for LIBOR-denominated borrowings is 1.38%. Principal payments are made quarterly on the Term Loan Facility, with the majority of the principal due at maturity. Interest on the Term Loan Facility for LIBOR-denominated borrowings is payable on a periodic basis, which must be at least quarterly. The financial covenants in the Credit Agreement require that we maintain, as of the last day of each fiscal quarter, a ratio of adjusted consolidated total debt to consolidated EBITDA of not more than 3.75 to 1.00, subject to two increases to 4.50 to 1.00 following a material acquisition, and a ratio of EBITDA to consolidated interest expense of not less than 3.50 to 1.00. Principal Payments and Debt Issuance Costs Excluding our prior year refinancing activity, we made principal payments on our long-term debt of $26 million and $2 million during the three months ended April 2, 2021 and April 3, 2020, respectively. This activity included required principal payments on our term loans of $24 million during the three months ended April 2, 2021. As of April 2, 2021 and January 1, 2021, there were no borrowings outstanding under the Revolving Facility. For the three months ended April 3, 2020, $19 million of debt discount and debt issuance costs were written off related to the prior year refinancing activity. Amortization of debt discount and debt issuance costs was $2 million and $4 million for the three months ended April 2, 2021 and April 3, 2020, respectively. The senior unsecured term loans, notes and revolving credit facility are fully and unconditionally guaranteed and contain certain customary restrictive covenants, including among other things, restrictions on our ability to create liens and enter into sale and leaseback transactions under certain circumstances. We were in compliance with all covenants as of April 2, 2021.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Loss	3 Months Ended
	Apr. 02, 2021
Equity [Abstract]
Accumulated Other Comprehensive Loss	Note 7–Accumulated Other Comprehensive Loss Changes in the components of accumulated other comprehensive loss were as follows: Foreign currency translation adjustments Unrecognized gain (loss) on derivative instruments Pension adjustments Total accumulated other comprehensive loss (in millions) Balance at January 3, 2020 $ (33) $ (33) $ (4) $ (70) Other comprehensive income (loss) 70 (61) (3) 6 Taxes (7) 10 1 4 Reclassification from accumulated other comprehensive loss — 14 — 14 Balance at January 1, 2021 30 (70) (6) (46) Other comprehensive income (loss) (5) 12 — 7 Taxes 1 (4) — (3) Reclassification from accumulated other comprehensive loss — 5 — 5 Balance at April 2, 2021 $ 26 $ (57) $ (6) $ (37) Reclassifications from unrecognized loss on derivative instruments are recorded in "Interest expense, net" in the condensed consolidated statements of income.

Earnings Per Share

Earnings Per Share	3 Months Ended
	Apr. 02, 2021
Earnings Per Share [Abstract]
Earnings Per Share	Note 8–Earnings Per Share 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 April 2, April 3, (in millions) Basic weighted average number of shares outstanding 142 142 Dilutive common share equivalents—stock options and other stock awards 2 2 Diluted weighted average number of shares outstanding 144 144 Anti-dilutive stock-based awards are excluded from the weighted average number of shares outstanding used to compute diluted EPS. The total outstanding stock options and vesting stock awards that were anti-dilutive were 1 million for both the three months ended April 2, 2021 and April 3, 2020. During the three months ended April 2, 2021, we made open market repurchases of our common stock for an aggregate purchase price of $100 million. All shares repurchased were immediately retired.

Sale of Accounts Receivable

Sale of Accounts Receivable	3 Months Ended
	Apr. 02, 2021
Receivables [Abstract]
Sale of Accounts Receivable	Note 9–Sale of Accounts Receivable We have entered into purchase agreements with a financial institution which provide us the election to sell accounts receivable at a discount. The receivables sold are typically collectable from our customers within 30 days of the sale date. During the three months ended April 2, 2021 and April 3, 2020, we sold $465 million and $564 million, respectively, of accounts receivable under the agreements and received proceeds of $464 million and $563 million, respectively, which were classified as operating activities in the condensed consolidated statements of cash flows. These transfers have been recognized as a sale, as the receivables have been legally isolated from Leidos, the financial institution has the right to pledge or exchange the assets received and we do not maintain effective control over the transferred accounts receivable. Our only continuing involvement with the transferred financial assets is as the collection and servicing agent. As a result, the accounts receivable balance on the condensed consolidated balance sheets is presented net of the transferred amounts. No servicing asset or liability was recognized for continued servicing of the sold receivables, as the servicing fee approximates fair value. The difference between the carrying amount of the receivables sold and the net cash received was recognized as a loss on sale and was recorded within "Selling, general and administrative expenses" on the condensed consolidated statements of income. Sold receivables activity for the periods presented was as follows: Three Months Ended April 2, April 3, (in millions) Sales of accounts receivable $ 465 $ 564 Cash collections on sold receivables remitted to financial institution (371) (367) Outstanding balance sold to financial institution 94 197 Cash collected but not yet remitted to financial institution (19) (60) Sold receivables due from customers $ 75 $ 137

Business Segments

Business Segments	3 Months Ended
	Apr. 02, 2021
Segment Reporting [Abstract]
Business Segments	Note 10–Business Segments Our operations and reportable segments are organized around the customers and markets we serve. We define our reportable segments based on the way the chief operating decision maker ("CODM"), currently our Chairman and Chief Executive Officer, manages operations for the purposes of allocating resources and assessing performance. The segment information for the periods presented was as follows: Three Months Ended April 2, April 3, (in millions) Revenues: Defense Solutions $ 1,958 $ 1,705 Civil 766 654 Health 591 530 Total revenues $ 3,315 $ 2,889 Operating income (loss): Defense Solutions $ 152 $ 95 Civil 74 59 Health 102 73 Corporate (20) (35) Total operating income $ 308 $ 192

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Apr. 02, 2021
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Note 11–Commitments and Contingencies Legal Proceedings MSA Joint Venture On November 10, 2015, MSA received a final decision by the Department of Energy ("DoE") contracting officer for the Mission Support Contract concluding that certain payments to MSA by the DoE for the performance of IT services by Lockheed Martin Services, Inc. ("LMSI") under a subcontract to MSA constituted alleged affiliate fees in violation of Federal Acquisition Regulations ("FAR"). Lockheed Martin Integrated Technology LLC (now known as Leidos Integrated Technology LLC) is a member entity of MSA. Subsequent to the contracting officer's final decision, MSA, LMSI, and Lockheed Martin Corporation received notice from the U.S. Attorney's Office for the Eastern District of Washington that the U.S. government had initiated a False Claims Act investigation into the facts surrounding this dispute. On February 8, 2019, the Department of Justice filed a complaint in the United States District Court for the Eastern District of Washington against MSA, Lockheed Martin Corporation, Lockheed Martin Services, Inc. and a Lockheed Martin employee ("Defendants"). The complaint alleges violations of the False Claims Act, the Anti-Kickback Act and breach of contract with the DoE, among other things. On January 13, 2020, the Defendants' motions to dismiss were granted in part and denied in part. Litigation will proceed for the False Claims Act and other common law claims, although the Anti-Kickback Act claim has been dismissed with prejudice. The U.S. Attorney's office had previously advised that a parallel criminal investigation was open, although no subjects or targets of the investigation had been identified. The U.S. Attorney's office has informed MSA that it has closed the criminal investigation. Since this issue first was raised by the DoE, MSA has asserted that the IT services performed by LMSI under a fixed-price/fixed-unit rate subcontract approved by the DoE meet the definition of a "commercial item" under the FAR and any profits earned on that subcontract are permissible. MSA filed an appeal of the contracting officer's decision with the Civilian Board of Contract Appeals ("CBCA"), which was stayed pending resolution of the False Claims Act matter. Subsequent to the filing of MSA's appeal, the contracting officer demanded that MSA reimburse the DoE in the amount of $64 million, which was his estimate of the profits earned during the period from 2010 to 2014 by LMSI. The DoE has deferred collection of $32 million of that demand, pending resolution of the appeal and without prejudice to MSA's position that it is not liable for any of the DoE's $64 million reimbursement claim. On December 10, 2019, MSA received a second final decision by the DoE contracting officer, estimating approximately $29 million in alleged unallowable profit and associated general and administrative costs during the period from 2015 to 2016 by LMSI. MSA filed an appeal of the second contracting officer's decision, which has been consolidated with the prior proceeding before the CBCA and stayed pending resolution of the False Claims Act matter. The DoE and MSA also executed an agreement to defer the entire amount of the disallowed costs from the second contracting officer's final decision until the CBCA proceedings are finally resolved. Leidos has agreed to indemnify Jacobs Group, LLC and Centerra Group, LLC for any liability MSA incurs in this matter. Under the terms of the Separation Agreement, Lockheed Martin agreed to indemnify Leidos for 100% of any damages in excess of $38 million up to $64 million, and 50% of any damages in excess of $64 million, with respect to claims asserted against MSA related to this matter. On April 5, 2021, MSA finalized the settlement of the False Claims Act litigation in the Eastern District of Washington and the related contract claim at the Civilian Board of Contract Appeals. Under the settlement of the False Claims Act litigation, MSA and Lockheed Martin will each pay $3 million to the government. Under the settlement of the contract claim, DoE will pay MSA approximately $37 million. Both agreements contain customary terms and conditions including appropriate waivers and releases (except for criminal liability) and no admission of wrongdoing. There remain other outstanding matters in dispute between DoE and MSA as the two parties work to close out the Mission Support Contract. As of April 2, 2021, we believe we have adequately reserved for any potential liabilities related to these disputes. Class Action Lawsuit On March 2, 2021, Leidos and certain current officers of Leidos were named as defendants in a putative class action securities lawsuit filed in the U.S. District Court for the Southern District of New York. The complaint alleges violations of Sections 10(b) and 20(a) of the Securities Exchange Act of 1934, as amended, and Rule 10b-5 promulgated thereunder relating to alleged misstatements or omissions in Leidos' public filings with the SEC and other public statements during the period from May 4, 2020 to February 23, 2021 relating, among other things, to Leidos' acquisition of the SD&A Businesses. The plaintiff seeks to recover from the Company and the individual defendants an unspecified amount of damages at this time. We believe the suit lacks merit and we intend to vigorously defend against it. Other Contingencies VirnetX, Inc. ("VirnetX") On April 10, 2018, a jury trial concluded in an additional patent infringement case brought by VirnetX against Apple, referred to as the Apple II case, in which the jury returned a verdict against Apple for infringement and awarded VirnetX damages in the amount of over $502 million. On April 11, 2018, in a second phase of the Apple II trial, the jury found Apple's infringement to be willful. On August 30, 2018, the federal trial court in the Eastern District of Texas entered a final judgment and rulings on post-trial motions in the Apple II case. The court affirmed the jury’s verdict of over $502 million and granted VirnetX’s motions for supplemental damages, a sunset royalty and royalty rate of $1.20 per infringing device, along with pre-judgment and post-judgment interest and costs. The court denied VirnetX’s motions for enhanced damages, attorneys’ fees and an injunction. The court also denied Apple’s motions for judgment as a matter of law and for a new trial. An additional sum of over $93 million for costs and pre-judgment interest was subsequently agreed upon pursuant to a court order, bringing the total award to VirnetX in the Apple II case to over $595 million. Apple filed an appeal of the judgment in the Apple II case with the U.S. Court of Appeals for the Federal Circuit, and on November 22, 2019, the Federal Circuit affirmed in part, reversed in part and remanded the Apple II case back to the District Court. The Federal Circuit affirmed that Apple infringed two of the patents at issue in the case, and ruled that Apple is precluded from making certain patent invalidity arguments. However, the Federal Circuit reversed the judgment that Apple infringed two other patents at issue, vacated the prior damages awarded in the Apple II case, and remanded the Apple II case back to the District Court for further proceedings regarding damages. On April 23, 2020, the District Court ordered a new trial on damages in the Apple II case, which was delayed by the coronavirus pandemic and started on October 26, 2020. On October 30, 2020, the jury awarded VirnetX $503 million in damages and specified a royalty rate of $0.84 per infringing device. Apple is expected to appeal this decision. In January 2021, the District Court entered final judgment affirming the jury award and the parties separately agreed on additional costs and interest of over $75 million, subject to Apple's appeal. On February 4, 2021, Apple filed a notice of appeal with the U.S. Court of Appeals for the Federal Circuit in the Apple II case. Under our agreements with VirnetX, Leidos would receive 25% of the proceeds obtained by VirnetX after reduction for attorneys' fees and costs. However, the verdict in the Apple II case remains subject to the ongoing and potential future proceedings and appeals. In addition, the patents at issue in these cases are subject to U.S. Patent and Trademark Office post-grant inter partes review and/or reexamination proceedings and related appeals, which may result in all or part of these patents being invalidated or the claims of the patents being limited. Thus, no assurances can be given when or if we will receive any proceeds in connection with these jury awards. In addition, if Leidos receives any proceeds, we are required to pay a royalty to the customer who paid for the development of the technology. Government Investigations and Reviews We are routinely subject to investigations and reviews relating to compliance with various laws and regulations with respect to our 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 effect on our business, financial position, results of operations and cash flows due to our reliance on government contracts. As of April 2, 2021, indirect cost audits by the Defense Contract Audit Agency remain open for fiscal 2016 and subsequent fiscal years. Although we have recorded contract revenues based upon an estimate of costs that we believe will be approved upon final audit or review, we cannot predict the outcome of any ongoing or future audits or reviews and adjustments, and if future adjustments exceed estimates, our profitability may be adversely affected. As of April 2, 2021, we believe we have adequately reserved for potential adjustments from audits or reviews of contract costs. Commitments We have outstanding letters of credit of $84 million as of April 2, 2021, principally related to performance guarantees on contracts. We also have outstanding surety bonds with a notional amount of $138 million, principally related to performance and subcontractor payment bonds on contracts. The value of the surety bonds may vary due to changes in the underlying project status and/or contractual modifications. As of April 2, 2021, the future expirations of the outstanding letters of credit and surety bonds were as follows: Fiscal year ending (in millions) 2021 (remainder of year) $ 104 2022 98 2023 2 2024 2 2025 2 2026 and thereafter 14 $ 222

Basis of Presentation and Sum_2

Basis of Presentation and Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Apr. 02, 2021
Accounting Policies [Abstract]
Consolidation	We have a controlling interest in Mission Support Alliance, LLC ("MSA"), a joint venture with Centerra Group, LLC. We also have a controlling interest in Hanford Mission Integration Solutions, LLC ("HMIS"), the legal entity for the follow-on contract to MSA's contract and a joint venture with Centerra Group, LLC and Parsons Government Services, Inc. The financial results for MSA and HMIS are consolidated into our unaudited condensed consolidated financial statements. The unaudited condensed consolidated financial statements also include the balances of all voting interest entities in which Leidos has a controlling voting interest ("subsidiaries") and a variable interest entity ("VIE") in which Leidos is the primary beneficiary. The consolidated balances of the VIE are not material to the unaudited condensed consolidated financial statements for the periods presented. Intercompany accounts and transactions between consolidated companies have been eliminated in consolidation.
Basis of Accounting	The accompanying unaudited condensed financial information has been prepared in accordance with the rules of the U.S. Securities and Exchange Commission 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.
Estimates	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 estimated profitability of long-term contracts, indirect billing rates, allowances for doubtful accounts, inventories, right-of-use assets and lease liabilities, fair value and impairment of intangible assets and goodwill, income taxes, stock-based compensation expense and contingencies. These 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.
Accounting Standards Updates Adopted and Updates Issued But Not Yet Adopted	ASU 2020-06, Debt – Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging – Contracts in Entity's Own Equity (Subtopic 815-40) In August 2020, the Financial Accounting Standards Board ("FASB") issued ASU 2020-06 which simplifies the accounting for convertible debt and convertible preferred stock by removing the requirements to separate embedded conversion features from the host convertible instruments. Additionally, the amendments in this update simplify the guidance in Subtopic 815-40 by removing certain criteria that must be satisfied in order to classify a contract as equity. This update also improves the consistency of earnings per share calculations by requiring an entity to use the if-converted method of calculating diluted earnings per share rather than the treasury stock method for convertible instruments and also by requiring the inclusion of the potential effect of shares settled in cash or shares in the diluted earnings per share calculation. The amendments in this update are effective for public entities for fiscal years beginning after December 15, 2021, and adopted using either a fully or modified retrospective approach. Early adoption is permitted, but no earlier than fiscal years beginning after December 15, 2020. Entities should adopt the guidance as of the beginning of the fiscal year of adoption and cannot adopt the guidance in an interim reporting period. Effective January 2, 2021, we adopted the requirements of ASU 2020-06 using the modified retrospective method. The adoption did not have an impact to our financial position, results of operations and earnings per share. Accounting Standards Updates Issued But Not Yet Adopted ASU 2020-04 and ASU 2021-01, Reference Rate Reform (Topic 848) In March 2020, the FASB issued ASU 2020-04 which provides companies with optional expedients and exceptions to ease the potential accounting burden associated with transitioning away from reference rates that are expected to be discontinued. This update provides optional expedients for applying accounting guidance to contracts, hedging relationships and other transactions that reference the London Interbank Offered Rate ("LIBOR") or another reference rate expected to be discontinued because of the reference rate reform. The amendments in this update are effective for all entities as of March 2020 and can be adopted using a prospective approach no later than December 31, 2022. In January 2021, the FASB issued ASU 2021-01 which amends the scope of ASU 2020-04. The amendments in this update are elective and provide optional relief for entities with hedge accounting and contract modifications affected by the discounting transition through December 31, 2022. Under this relief, entities may continue to account for contract modifications as a continuation of the existing contract and the continuation of the hedge accounting arrangement. We are currently evaluating the impacts of reference rate reform. We currently use the one-month LIBOR for which the rate publication will cease in June 2023.
Changes in Estimates on Contracts	Changes in estimates related to contracts accounted for using the cost-to-cost method of accounting are recognized in the period in which such changes are made for the inception-to-date effect of the changes, with the exception of contracts acquired through a business combination, where the adjustment is made for the period commencing from the date of acquisition.The impact on diluted earnings per share ("EPS") attributable to Leidos common stockholders is calculated using the statutory tax rate.
Cash and Cash Equivalents	Our cash equivalents are primarily comprised of investments in several large institutional money market accounts, with original maturity of three months or less. Outstanding payments are included within "Cash and cash equivalents" and "Accounts payable and accrued liabilities" correspondingly on the condensed consolidated balance sheets.
Restricted Cash	We have restricted cash balances, primarily representing advances from customers that are restricted as to use for certain expenditures related to that customer's contract and cash collected from the sale of accounts receivable but not yet remitted to the financial institution (see "Note 9–Sale of Accounts Receivable"). Restricted cash balances are included as "Other current assets" in the condensed consolidated balance sheets.

Basis of Presentation and Sum_3

Basis of Presentation and Summary of Significant Accounting Policies (Tables)	3 Months Ended
	Apr. 02, 2021
Accounting Policies [Abstract]
Schedule of changes In estimates on contracts	Changes in estimates on contracts were as follows: Three Months Ended April 2, April 3, (in millions, except per share amounts) Favorable impact $ 31 $ 24 Unfavorable impact (19) (7) Net impact to income before income taxes $ 12 $ 17 Impact on diluted EPS attributable to Leidos common stockholders $ 0.06 $ 0.09

Revenues from Contracts with _2

Revenues from Contracts with Customers (Tables)	3 Months Ended
	Apr. 02, 2021
Revenue from Contract with Customer [Abstract]
Schedule of disaggregated revenues	Disaggregated revenues by customer-type were as follows: Three Months Ended April 2, 2021 Defense Solutions Civil Health Total (in millions) DoD and U.S. Intelligence Community $ 1,407 $ 13 $ 158 $ 1,578 Other government agencies (1) 272 605 407 1,284 Commercial and non-U.S. customers 278 125 26 429 Total $ 1,957 $ 743 $ 591 $ 3,291 Three Months Ended April 3, 2020 Defense Solutions Civil Health Total (in millions) DoD and U.S. Intelligence Community $ 1,285 $ 17 $ 124 $ 1,426 Other government agencies (1) 208 544 375 1,127 Commercial and non-U.S. customers 212 71 28 311 Total $ 1,705 $ 632 $ 527 $ 2,864 (1) Includes federal government agencies other than the DoD and U.S. Intelligence Community, as well as state and local government agencies. Disaggregated revenues by contract-type were as follows: Three Months Ended April 2, 2021 Defense Solutions Civil Health Total (in millions) Cost-reimbursement and fixed-price-incentive-fee $ 1,163 $ 374 $ 99 $ 1,636 Firm-fixed-price 553 262 392 1,207 Time-and-materials and fixed-price-level-of-effort 241 107 100 448 Total $ 1,957 $ 743 $ 591 $ 3,291 Three Months Ended April 3, 2020 Defense Solutions Civil Health Total (in millions) Cost-reimbursement and fixed-price-incentive-fee $ 1,094 $ 346 $ 65 $ 1,505 Firm-fixed-price 440 173 373 986 Time-and-materials and fixed-price-level-of-effort 171 113 89 373 Total $ 1,705 $ 632 $ 527 $ 2,864 Disaggregated revenues by geographic location were as follows: Three Months Ended April 2, 2021 Defense Solutions Civil Health Total (in millions) United States $ 1,713 $ 704 $ 591 $ 3,008 International 244 39 — 283 Total $ 1,957 $ 743 $ 591 $ 3,291 Three Months Ended April 3, 2020 Defense Solutions Civil Health Total (in millions) United States $ 1,513 $ 619 $ 527 $ 2,659 International 192 13 — 205 Total $ 1,705 $ 632 $ 527 $ 2,864
Components of contract assets and contract liabilities	The components of contract assets and contract liabilities consisted of the following: Balance sheet line item April 2, January 1, (in millions) Contract assets - current: Unbilled receivables Receivables, net $ 943 $ 906 Contract liabilities - current: Deferred revenue Accounts payable and accrued liabilities $ 433 $ 481 Contract liabilities - non-current: Deferred revenue Other long-term liabilities $ 18 $ 20

Acquisitions, Goodwill, and I_2

Acquisitions, Goodwill, and Intangible Assets (Tables)	3 Months Ended
	Apr. 02, 2021
Business Combinations [Abstract]
Schedule of preliminary fair values of intangible assets acquired and related weighted average amortization periods	The following table summarizes the preliminary fair value of intangible assets acquired at the Closing Date and the related weighted average amortization period: Weighted average amortization period Fair value (in years) (in millions) Programs 11 $ 40 Backlog 1 1 Technology 7 28 Total 9 $ 69 The following table summarizes the final fair value of intangible assets acquired at the Acquisition Date and the related weighted average amortization period: Weighted average amortization period Fair value (in years) (in millions) Programs 13 $ 485 Backlog 1 32 Technology 11 11 Total 12 $ 528
Schedule of preliminary fair values of the assets acquired and liabilities assumed	The fair values of the assets acquired and liabilities assumed at the Transaction Date were as follows (in millions): Cash $ 26 Receivables 130 Inventory 106 Other current assets 29 Operating lease right-of-use assets 35 Property, plant and equipment 32 Intangible assets 355 Accounts payable and accrued liabilities (135) Accrued payroll and employee benefits (8) Operating lease liabilities (32) Deferred tax liabilities (52) Other long-term liabilities (13) Total identifiable net assets acquired 473 Goodwill 573 Purchase price $ 1,046 The final fair values of the assets acquired and liabilities assumed at the Acquisition Date were as follows (in millions): Cash $ 18 Receivables 158 Inventory 47 Other current assets 18 Operating lease right-of-use assets 25 Property, plant and equipment 172 Intangible assets 528 Other assets 8 Accounts payable and accrued liabilities (50) Accrued payroll and employee benefits (29) Operating lease liabilities (20) Other long-term liabilities (4) Total identifiable net assets acquired 871 Goodwill 789 Purchase price $ 1,660
Schedule of preliminary fair values of intangible assets acquired and related weighted average amortization periods	The following table summarizes the fair value of intangible assets acquired at the Transaction Date and the related weighted average amortization period: Weighted average amortization period Fair value (in years) (in millions) Programs 13 $ 141 Customer relationships 10 49 Technology 10 73 In-process research and development ("IPR&D") (1) 92 Total 11 $ 355 (1) IPR&D assets are indefinite-lived at the acquisition date until placed into service, at which time such assets will be reclassified to a finite-lived amortizable intangible asset.
Acquisition expenses incurred	The following expenses were incurred related to the acquisitions of Dynetics, the SD&A Businesses, and 1901 Group: Three Months Ended April 2, April 3, (in millions) Acquisition costs $ — $ 8 Integration costs 5 1 Total acquisition and integration costs $ 5 $ 9
Acquisition pro forma information	The pro forma information is not intended to reflect the actual results of operations that would have occurred if the acquisitions had been completed on December 29, 2018, nor is it intended to be an indication of future operating results. Three Months Ended April 3, (in millions, except per share amounts) Revenues $ 3,080 Net income attributable to Leidos common stockholders 121 Earnings per share: Basic $ 0.85 Diluted 0.84
Schedule of carrying amount of goodwill by reportable segment	The following table presents changes in the carrying amount of goodwill by reportable segment: Defense Solutions Civil Health Total (in millions) Goodwill at January 3, 2020 $ 2,039 $ 1,907 $ 966 $ 4,912 Goodwill re-allocation 429 (429) — — Acquisition of Dynetics and the SD&A Businesses 788 569 — 1,357 Foreign currency translation adjustments 44 — — 44 Goodwill at January 1, 2021 3,300 2,047 966 6,313 Acquisition of Dynetics, the SD&A Businesses and 1901 Group 141 4 — 145 Foreign currency translation adjustments (2) — — (2) Goodwill at April 2, 2021 $ 3,439 $ 2,051 $ 966 $ 6,456
Schedule of intangible assets	Intangible assets, net consisted of the following: April 2, 2021 January 1, 2021 Gross carrying value Accumulated amortization Net carrying value Gross carrying value Accumulated amortization Net carrying value (in millions) Finite-lived intangible assets: Programs $ 1,673 $ (731) $ 942 $ 1,632 $ (687) $ 945 Software and technology 218 (106) 112 188 (100) 88 Customer relationships 94 (12) 82 93 (10) 83 Backlog 33 (32) 1 32 (29) 3 Trade names 1 — 1 1 — 1 Total finite-lived intangible assets 2,019 (881) 1,138 1,946 (826) 1,120 Indefinite-lived intangible assets: In-process research and development 92 — 92 92 — 92 Trade names 4 — 4 4 — 4 Total indefinite-lived intangible assets 96 — 96 96 — 96 Total intangible assets $ 2,115 $ (881) $ 1,234 $ 2,042 $ (826) $ 1,216
Schedule of estimated annual amortization expense	The estimated annual amortization expense as of April 2, 2021, was as follows: Fiscal year ending (in millions) 2021 (remainder of year) $ 157 2022 207 2023 182 2024 134 2025 110 2026 and thereafter 348 $ 1,138

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
	Apr. 02, 2021
Fair Value Disclosures [Abstract]
Schedule of financial assets measured on a recurring basis	The financial instruments measured at fair value on a recurring basis primarily consisted of the following: April 2, 2021 January 1, 2021 Carrying value Fair value Carrying value Fair value (in millions) Financial liabilities: Derivatives $ 82 $ 82 $ 103 $ 103

Derivative Instruments (Tables)

Derivative Instruments (Tables)	3 Months Ended
	Apr. 02, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of fair value of the Company's interest rate swaps	The fair value of the interest rate swaps was as follows: Liability derivatives Balance sheet line item April 2, January 1, (in millions) Cash flow interest rate swaps Other long-term liabilities $ 82 $ 103
Schedule of effect of the Company's cash flow hedges on other comprehensive income and earnings	The effect of the cash flow hedges on other comprehensive loss and earnings for the periods presented was as follows: Three Months Ended April 2, April 3, (in millions) Total interest expense, net presented in the condensed consolidated statements of income in which the effects of cash flow hedges are recorded $ 45 $ 48 Amount recognized in other comprehensive income (loss) $ 12 $ (55) Amount reclassified from accumulated other comprehensive loss to interest expense, net $ 5 $ —

Debt (Tables)

Debt (Tables)	3 Months Ended
	Apr. 02, 2021
Debt Disclosure [Abstract]
Schedule of Company's debt	Our debt consisted of the following: Stated interest rate Effective interest rate April 2, 2021 (1) January 1, 2021 (1) (in millions) Senior unsecured term loans: $1,925 million Term Loan, due January 2025 1.49% 1.75% 1,368 1,391 Senior unsecured notes: $500 million notes, due May 2023 2.95% 3.17% 497 497 $500 million notes, due May 2025 3.63% 3.76% 496 496 $750 million notes due May 2030 4.38% 4.50% 737 737 $1,000 million notes, due February 2031 2.30% 2.38% 989 989 $250 million notes, due July 2032 7.13% 7.43% 247 247 $300 million notes, due July 2033 5.50% 5.88% 158 158 $300 million notes, due December 2040 5.95% 6.03% 216 216 Notes payable and finance leases due on various dates through fiscal 2032 1.84%-5.49% Various 58 13 Total long-term debt 4,766 4,744 Less: current portion (103) (100) Total long-term debt, net of current portion $ 4,663 $ 4,644 (1) The carrying amounts of the senior term loans and notes as of April 2, 2021, and January 1, 2021, include the remaining principal outstanding of $4,758 million and $4,782 million, respectively, less total unamortized debt discounts and deferred debt issuances costs of $50 million and $51 million, respectively.

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Loss (Tables)	3 Months Ended
	Apr. 02, 2021
Equity [Abstract]
Schedule of changes in the components of accumulated other comprehensive (loss) income	Changes in the components of accumulated other comprehensive loss were as follows: Foreign currency translation adjustments Unrecognized gain (loss) on derivative instruments Pension adjustments Total accumulated other comprehensive loss (in millions) Balance at January 3, 2020 $ (33) $ (33) $ (4) $ (70) Other comprehensive income (loss) 70 (61) (3) 6 Taxes (7) 10 1 4 Reclassification from accumulated other comprehensive loss — 14 — 14 Balance at January 1, 2021 30 (70) (6) (46) Other comprehensive income (loss) (5) 12 — 7 Taxes 1 (4) — (3) Reclassification from accumulated other comprehensive loss — 5 — 5 Balance at April 2, 2021 $ 26 $ (57) $ (6) $ (37)

Earnings Per Share (Tables)

Earnings Per Share (Tables)	3 Months Ended
	Apr. 02, 2021
Earnings Per Share [Abstract]
Reconciliation of the weighted average number of shares outstanding used to compute basic and diluted EPS	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 April 2, April 3, (in millions) Basic weighted average number of shares outstanding 142 142 Dilutive common share equivalents—stock options and other stock awards 2 2 Diluted weighted average number of shares outstanding 144 144

Sale of Accounts Receivable (Ta

Sale of Accounts Receivable (Tables)	3 Months Ended
	Apr. 02, 2021
Receivables [Abstract]
Accounts receivable sale activity	Sold receivables activity for the periods presented was as follows: Three Months Ended April 2, April 3, (in millions) Sales of accounts receivable $ 465 $ 564 Cash collections on sold receivables remitted to financial institution (371) (367) Outstanding balance sold to financial institution 94 197 Cash collected but not yet remitted to financial institution (19) (60) Sold receivables due from customers $ 75 $ 137

Business Segments (Tables)

Business Segments (Tables)	3 Months Ended
	Apr. 02, 2021
Segment Reporting [Abstract]
Schedule of segment reporting information by segment	The segment information for the periods presented was as follows: Three Months Ended April 2, April 3, (in millions) Revenues: Defense Solutions $ 1,958 $ 1,705 Civil 766 654 Health 591 530 Total revenues $ 3,315 $ 2,889 Operating income (loss): Defense Solutions $ 152 $ 95 Civil 74 59 Health 102 73 Corporate (20) (35) Total operating income $ 308 $ 192

Basis of Presentation and Sum_4

Basis of Presentation and Summary of Significant Accounting Policies (Narrative) (Details) $ in Millions	3 Months Ended
	Apr. 02, 2021USD ($)segment	Apr. 03, 2020USD ($)	Jan. 01, 2021USD ($)
Significant Accounting Policies [Line Items]
Number of reportable segments | segment	3
Revenue recognized for performance obligation satisfied in the previous periods	$ 9	$ 20
Accounts payable and accrued liabilities	2,133		$ 2,175
Restricted cash balances	157		163
Cash and Cash Equivalents
Significant Accounting Policies [Line Items]
Accounts payable and accrued liabilities	$ 193		$ 237

Basis of Presentation and Sum_5

Basis of Presentation and Summary of Significant Accounting Policies (Changes in Estimates on Contracts) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Apr. 02, 2021	Apr. 03, 2020
Accounting Policies [Abstract]
Favorable impact	$ 31	$ 24
Unfavorable impact	(19)	(7)
Net impact to income before income taxes	$ 12	$ 17
Impact on diluted EPS attributable to Leidos common stockholders (usd per share)	$ 0.06	$ 0.09

Revenues from Contracts with _3

Revenues from Contracts with Customers (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
	Apr. 02, 2021	Apr. 03, 2020
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Remaining performance obligations, which are expected to be recognized as revenue	$ 16,000
Revenue recognized under ASC 842	24	$ 25
Contract liability revenue recognized	$ 144	$ 145
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-04-03
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Remaining performance obligations, which are expected to be recognized as revenue (as percent)	51.00%
Remaining performance obligations, which are expected to be recognized as revenue, period (in months)	12 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-04-03
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Remaining performance obligations, which are expected to be recognized as revenue (as percent)	82.00%
Remaining performance obligations, which are expected to be recognized as revenue, period (in months)	1 year

Revenues from Contracts with _4

Revenues from Contracts with Customers (Disaggregation of revenue) (Details) - USD ($) $ in Millions	3 Months Ended
	Apr. 02, 2021	Apr. 03, 2020
Disaggregation of Revenue [Line Items]
Revenues	$ 3,291	$ 2,864
United States
Disaggregation of Revenue [Line Items]
Revenues	3,008	2,659
International
Disaggregation of Revenue [Line Items]
Revenues	283	205
Cost-reimbursement and fixed-price-incentive-fee
Disaggregation of Revenue [Line Items]
Revenues	1,636	1,505
Firm-fixed-price
Disaggregation of Revenue [Line Items]
Revenues	1,207	986
Time-and-materials and fixed-price-level-of-effort
Disaggregation of Revenue [Line Items]
Revenues	448	373
DoD and U.S. Intelligence Community
Disaggregation of Revenue [Line Items]
Revenues	1,578	1,426
Other government agencies
Disaggregation of Revenue [Line Items]
Revenues	1,284	1,127
Commercial and non-U.S. customers
Disaggregation of Revenue [Line Items]
Revenues	429	311
Defense Solutions
Disaggregation of Revenue [Line Items]
Revenues	1,957	1,705
Defense Solutions | United States
Disaggregation of Revenue [Line Items]
Revenues	1,713	1,513
Defense Solutions | International
Disaggregation of Revenue [Line Items]
Revenues	244	192
Defense Solutions | Cost-reimbursement and fixed-price-incentive-fee
Disaggregation of Revenue [Line Items]
Revenues	1,163	1,094
Defense Solutions | Firm-fixed-price
Disaggregation of Revenue [Line Items]
Revenues	553	440
Defense Solutions | Time-and-materials and fixed-price-level-of-effort
Disaggregation of Revenue [Line Items]
Revenues	241	171
Defense Solutions | DoD and U.S. Intelligence Community
Disaggregation of Revenue [Line Items]
Revenues	1,407	1,285
Defense Solutions | Other government agencies
Disaggregation of Revenue [Line Items]
Revenues	272	208
Defense Solutions | Commercial and non-U.S. customers
Disaggregation of Revenue [Line Items]
Revenues	278	212
Civil
Disaggregation of Revenue [Line Items]
Revenues	743	632
Civil | United States
Disaggregation of Revenue [Line Items]
Revenues	704	619
Civil | International
Disaggregation of Revenue [Line Items]
Revenues	39	13
Civil | Cost-reimbursement and fixed-price-incentive-fee
Disaggregation of Revenue [Line Items]
Revenues	374	346
Civil | Firm-fixed-price
Disaggregation of Revenue [Line Items]
Revenues	262	173
Civil | Time-and-materials and fixed-price-level-of-effort
Disaggregation of Revenue [Line Items]
Revenues	107	113
Civil | DoD and U.S. Intelligence Community
Disaggregation of Revenue [Line Items]
Revenues	13	17
Civil | Other government agencies
Disaggregation of Revenue [Line Items]
Revenues	605	544
Civil | Commercial and non-U.S. customers
Disaggregation of Revenue [Line Items]
Revenues	125	71
Health
Disaggregation of Revenue [Line Items]
Revenues	591	527
Health | United States
Disaggregation of Revenue [Line Items]
Revenues	591	527
Health | International
Disaggregation of Revenue [Line Items]
Revenues	0	0
Health | Cost-reimbursement and fixed-price-incentive-fee
Disaggregation of Revenue [Line Items]
Revenues	99	65
Health | Firm-fixed-price
Disaggregation of Revenue [Line Items]
Revenues	392	373
Health | Time-and-materials and fixed-price-level-of-effort
Disaggregation of Revenue [Line Items]
Revenues	100	89
Health | DoD and U.S. Intelligence Community
Disaggregation of Revenue [Line Items]
Revenues	158	124
Health | Other government agencies
Disaggregation of Revenue [Line Items]
Revenues	407	375
Health | Commercial and non-U.S. customers
Disaggregation of Revenue [Line Items]
Revenues	$ 26	$ 28

Revenues from Contracts with _5

Revenues from Contracts with Customers (Contract Asset and Liabilities) (Details) - USD ($) $ in Millions	Apr. 02, 2021	Jan. 01, 2021
Revenue from Contract with Customer [Abstract]
Contract assets - current:	$ 943	$ 906
Contract liabilities - current:	433	481
Contract liabilities - non-current:	$ 18	$ 20

Acquisitions, Goodwill, and I_3

Acquisitions, Goodwill, and Intangible Assets (Narrative) (Details) - USD ($) $ in Millions	Jan. 14, 2021	May 04, 2020	Jan. 31, 2020	Apr. 02, 2021	Apr. 03, 2020	Jan. 01, 2021	Jan. 03, 2020
Restructuring Cost and Reserve [Line Items]
Goodwill				$ 6,456		$ 6,313	$ 4,912
Revenues				3,291	$ 2,864
Payments to acquire businesses, net of cash acquired				218	1,642
Goodwill impairments				0	0
Amortization expense				55	43
1901 Group
Restructuring Cost and Reserve [Line Items]
Preliminary purchase consideration	$ 214
Cash acquired	2
Goodwill	140
Revenue				13
Goodwill tax deductible amount	$ 118
SD&A Businesses and Dynetics
Restructuring Cost and Reserve [Line Items]
Acquisition costs				0	8
SD&A Businesses
Restructuring Cost and Reserve [Line Items]
Preliminary purchase consideration		$ 1,020
Goodwill		573
Revenue				72
Cash		26
Goodwill tax deductible amount		420
Payments to acquire businesses		1,015
Payment for contractual net working capital acquired		$ 31
Dynetics
Restructuring Cost and Reserve [Line Items]
Goodwill			$ 789
Cash			18
Revenues				$ 298	$ 129
Payments to acquire businesses, net of cash acquired			$ 1,640

Acquisitions, Goodwill, and I_4

Acquisitions, Goodwill, and Intangible Assets (Schedule of preliminary fair values of the assets acquired and liabilities assumed) (Details) - USD ($) $ in Millions	Apr. 02, 2021	Jan. 01, 2021	May 04, 2020	Jan. 31, 2020	Jan. 03, 2020
Business Acquisition [Line Items]
Goodwill	$ 6,456	$ 6,313			$ 4,912
SD&A Businesses
Business Acquisition [Line Items]
Cash			$ 26
Receivables			130
Inventory			106
Other current assets			29
Operating lease right-of-use assets			35
Property, plant and equipment			32
Intangible assets			355
Accounts payable and accrued liabilities			(135)
Accrued payroll and employee benefits			(8)
Operating lease liabilities			(32)
Deferred tax liabilities			(52)
Other long-term liabilities			(13)
Total identifiable net assets acquired			473
Goodwill			573
Purchase price			$ 1,046
Dynetics
Business Acquisition [Line Items]
Cash				$ 18
Receivables				158
Inventory				47
Other current assets				18
Operating lease right-of-use assets				25
Property, plant and equipment				172
Intangible assets				528
Other assets				8
Accounts payable and accrued liabilities				(50)
Accrued payroll and employee benefits				(29)
Operating lease liabilities				(20)
Other long-term liabilities				(4)
Total identifiable net assets acquired				871
Goodwill				789
Purchase price				$ 1,660

Acquisitions, Goodwill, and I_5

Acquisitions, Goodwill, and Intangible Assets (Schedule of intangible assets acquired) (Details) - USD ($) $ in Millions	Jan. 14, 2021	May 04, 2020	Jan. 31, 2020
1901 Group
Acquired Indefinite-lived Intangible Assets [Line Items]
Weighted average amortization period	9 years
Finite-lived lntangible assets	$ 69
SD&A Businesses
Acquired Indefinite-lived Intangible Assets [Line Items]
Weighted average amortization period		11 years
Fair value		$ 355
SD&A Businesses | In-process research and development ("IPR&D")
Acquired Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived intangible assets		$ 92
Dynetics
Acquired Indefinite-lived Intangible Assets [Line Items]
Weighted average amortization period			12 years
Finite-lived lntangible assets			$ 528
Programs | 1901 Group
Acquired Indefinite-lived Intangible Assets [Line Items]
Weighted average amortization period	11 years
Finite-lived lntangible assets	$ 40
Customer relationships | SD&A Businesses
Acquired Indefinite-lived Intangible Assets [Line Items]
Weighted average amortization period		10 years
Finite-lived lntangible assets		$ 49
Backlog | 1901 Group
Acquired Indefinite-lived Intangible Assets [Line Items]
Weighted average amortization period	1 year
Finite-lived lntangible assets	$ 1
Backlog | Dynetics
Acquired Indefinite-lived Intangible Assets [Line Items]
Weighted average amortization period			1 year
Finite-lived lntangible assets			$ 32
Technology | SD&A Businesses
Acquired Indefinite-lived Intangible Assets [Line Items]
Weighted average amortization period		10 years
Finite-lived lntangible assets		$ 73
Technology | Dynetics
Acquired Indefinite-lived Intangible Assets [Line Items]
Weighted average amortization period			11 years
Finite-lived lntangible assets			$ 11
Technology | 1901 Group
Acquired Indefinite-lived Intangible Assets [Line Items]
Weighted average amortization period	7 years
Finite-lived lntangible assets	$ 28
Programs | SD&A Businesses
Acquired Indefinite-lived Intangible Assets [Line Items]
Weighted average amortization period		13 years
Finite-lived lntangible assets		$ 141
Programs | Dynetics
Acquired Indefinite-lived Intangible Assets [Line Items]
Weighted average amortization period			13 years
Finite-lived lntangible assets			$ 485

Acquisitions, Goodwill, and I_6

Acquisitions, Goodwill, and Intangible Assets (Acquisition expenses incurred) (Details) - SD&A Businesses and Dynetics - USD ($) $ in Millions	3 Months Ended
	Apr. 02, 2021	Apr. 03, 2020
Business Acquisition [Line Items]
Acquisition costs	$ 0	$ 8
Integration costs	5	1
Total acquisition and integration costs	$ 5	$ 9

Acquisitions, Goodwill, and I_7

Acquisitions, Goodwill, and Intangible Assets (Pro Forma Information) (Details) - SD&A Businesses and Dynetics $ / shares in Units, $ in Millions	3 Months Ended
	Apr. 03, 2020USD ($)$ / shares
Business Acquisition [Line Items]
Revenues | $	$ 3,080
Net income attributable to Leidos common stockholders | $	$ 121
Earnings per share:
Basic (in dollars per share) | $ / shares	$ 0.85
Diluted (in dollars per share) | $ / shares	$ 0.84

Acquisitions, Goodwill, and I_8

Acquisitions, Goodwill, and Intangible Assets (Schedule of Changes in Goodwill by Segment) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Apr. 02, 2021	Jan. 01, 2021
Goodwill [Roll Forward]
Goodwill, Beginning Balance	$ 6,313	$ 4,912
Goodwill re-allocation		0
Goodwill acquired during period	145	1,357
Foreign currency translation adjustments	(2)	44
Ending balance, Goodwill	6,456	6,313
Defense Solutions
Goodwill [Roll Forward]
Goodwill, Beginning Balance	3,300	2,039
Goodwill re-allocation		429
Goodwill acquired during period	141	788
Foreign currency translation adjustments	(2)	44
Ending balance, Goodwill	3,439	3,300
Civil
Goodwill [Roll Forward]
Goodwill, Beginning Balance	2,047	1,907
Goodwill re-allocation		(429)
Goodwill acquired during period	4	569
Foreign currency translation adjustments	0	0
Ending balance, Goodwill	2,051	2,047
Health
Goodwill [Roll Forward]
Goodwill, Beginning Balance	966	966
Goodwill re-allocation		0
Goodwill acquired during period	0	0
Foreign currency translation adjustments	0	0
Ending balance, Goodwill	$ 966	$ 966

Acquisitions, Goodwill, and I_9

Acquisitions, Goodwill, and Intangible Assets (Schedule of intangible assets) (Details) - USD ($) $ in Millions	Apr. 02, 2021	Jan. 01, 2021
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying value	$ 2,019	$ 1,946
Finite-lived intangible assets, accumulated amortization	(881)	(826)
Finite-lived intangible assets, net carrying value	1,138	1,120
Indefinite-lived intangible assets	96	96
Total intangible assets, gross carrying value	2,115	2,042
Total intangible assets, net carrying value	1,234	1,216
In-process research and development
Acquired Finite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets	92	92
Trade names
Acquired Finite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets	4	4
Programs
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying value	1,673	1,632
Finite-lived intangible assets, accumulated amortization	(731)	(687)
Finite-lived intangible assets, net carrying value	942	945
Technology
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying value	218	188
Finite-lived intangible assets, accumulated amortization	(106)	(100)
Finite-lived intangible assets, net carrying value	112	88
Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying value	94	93
Finite-lived intangible assets, accumulated amortization	(12)	(10)
Finite-lived intangible assets, net carrying value	82	83
Backlog
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying value	33	32
Finite-lived intangible assets, accumulated amortization	(32)	(29)
Finite-lived intangible assets, net carrying value	1	3
Trade names
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying value	1	1
Finite-lived intangible assets, accumulated amortization	0	0
Finite-lived intangible assets, net carrying value	$ 1	$ 1

Acquisitions, Goodwill, and _10

Acquisitions, Goodwill, and Intangible Assets (Schedule of estimated annual amortization expense) (Details) - USD ($) $ in Millions	Apr. 02, 2021	Jan. 01, 2021
Estimated Annual Intangible Amortization Expense
2021 (remainder of year)	$ 157
2022	207
2023	182
2024	134
2025	110
2026 and thereafter	348
Finite-lived intangible assets, net carrying value	$ 1,138	$ 1,120

Fair Value Measurements (Financ

Fair Value Measurements (Financial Instruments Measured at Fair Value on Recurring Basis) (Details) - USD ($) $ in Millions	Apr. 02, 2021	Jan. 01, 2021
Carrying value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liability	$ 82	$ 103
Fair value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liability	$ 82	$ 103

Fair Value Measurements (Narrat

Fair Value Measurements (Narrative) (Details) - USD ($)	Apr. 02, 2021	Jan. 01, 2021
Carrying value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of notes receivable	$ 15,000,000	$ 15,000,000
Fair value of debt instrument	4,800,000,000	4,700,000,000
Fair value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of debt instrument	5,100,000,000	$ 5,200,000,000
Designated as Hedging Instrument | Interest rate swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Hedged instrument, face amount	$ 1,100,000,000

Derivative Instruments (Interes

Derivative Instruments (Interest rate swaps) (Details) - USD ($) $ in Millions	Apr. 02, 2021	Jan. 01, 2021
Cash Flow Hedging | Interest rate swaps | Other long-term liabilities | Designated as Hedging Instrument
Derivative [Line Items]
Liability derivatives	$ 82	$ 103

Derivative Instruments (Narrati

Derivative Instruments (Narrative) (Details)	Apr. 02, 2021USD ($)
Derivative [Line Items]
Losses expected to be reclassified in the next 12 months	$ 18,000,000
Designated as Hedging Instrument | Interest rate swaps
Derivative [Line Items]
Hedged instrument, face amount	$ 1,100,000,000
Designated as Hedging Instrument | Interest Rate Swap, Maturity Date August 2025 | Unsecured Debt
Derivative [Line Items]
Stated interest rate (in percentage)	3.00%

Derivative Instruments (Effect

Derivative Instruments (Effect of Cash Flow Hedge) (Details) - USD ($) $ in Millions	3 Months Ended
	Apr. 02, 2021	Apr. 03, 2020
Derivatives, Fair Value [Line Items]
Total interest expense, net presented in the condensed consolidated statements of income in which the effects of cash flow hedges are recorded	$ 45	$ 48
Amount recognized in other comprehensive income (loss)	12	(55)
Interest Expense
Derivatives, Fair Value [Line Items]
Amount reclassified from accumulated other comprehensive loss to interest expense, net	$ 5	$ 0

Debt (Summary of debt) (Details

Debt (Summary of debt) (Details) - USD ($)	Apr. 02, 2021	Jan. 01, 2021
Debt Instrument [Line Items]
Total long-term debt	$ 4,766,000,000	$ 4,744,000,000
Less: current portion	(103,000,000)	(100,000,000)
Total long-term debt, net of current portion	4,663,000,000	4,644,000,000
Long-term debt	4,758,000,000	4,782,000,000
Unamortized debt discounts and deferred debt issuances costs	50,000,000	51,000,000
Notes payable and finance leases due on various dates through fiscal 2032
Debt Instrument [Line Items]
Notes payable and finance leases due on various dates through fiscal 2032	$ 58,000,000	13,000,000
Notes payable and finance leases due on various dates through fiscal 2032 | Minimum
Debt Instrument [Line Items]
Stated interest rate	1.84%
Notes payable and finance leases due on various dates through fiscal 2032 | Maximum
Debt Instrument [Line Items]
Stated interest rate	5.49%
Unsecured Debt | $1,925 million Term Loan, due January 2025
Debt Instrument [Line Items]
Debt instrument, face amount	$ 1,925,000,000
Stated interest rate	1.49%
Effective interest rate	1.75%
Senior unsecured debt	$ 1,368,000,000	1,391,000,000
Unsecured Debt | $500 million notes, due May 2023
Debt Instrument [Line Items]
Debt instrument, face amount	$ 500,000,000
Stated interest rate	2.95%
Effective interest rate	3.17%
Senior unsecured debt	$ 497,000,000	497,000,000
Unsecured Debt | $500 million notes, due May 2025
Debt Instrument [Line Items]
Debt instrument, face amount	$ 500,000,000
Stated interest rate	3.63%
Effective interest rate	3.76%
Senior unsecured debt	$ 496,000,000	496,000,000
Unsecured Debt | $750 million notes due May 2030
Debt Instrument [Line Items]
Debt instrument, face amount	$ 750,000,000
Stated interest rate	4.38%
Effective interest rate	4.50%
Senior unsecured debt	$ 737,000,000	737,000,000
Unsecured Debt | $1,000 million notes, due February 2031
Debt Instrument [Line Items]
Debt instrument, face amount	$ 1,000,000,000
Stated interest rate	2.30%
Effective interest rate	2.38%
Senior unsecured debt	$ 989,000,000	989,000,000
Unsecured Debt | $250 million notes, due July 2032
Debt Instrument [Line Items]
Debt instrument, face amount	$ 250,000,000
Stated interest rate	7.13%
Effective interest rate	7.43%
Senior unsecured debt	$ 247,000,000	247,000,000
Unsecured Debt | $300 million notes, due July 2033
Debt Instrument [Line Items]
Debt instrument, face amount	$ 300,000,000
Stated interest rate	5.50%
Effective interest rate	5.88%
Senior unsecured debt	$ 158,000,000	158,000,000
Unsecured Debt | $300 million notes, due December 2040
Debt Instrument [Line Items]
Debt instrument, face amount	$ 300,000,000
Stated interest rate	5.95%
Effective interest rate	6.03%
Senior unsecured debt	$ 216,000,000	$ 216,000,000

Debt (Narrative) (Details)

Debt (Narrative) (Details)	3 Months Ended
	Apr. 02, 2021USD ($)increase	Apr. 03, 2020USD ($)	Jan. 01, 2021USD ($)
Debt Instrument [Line Items]
Payments of long-term debt	$ 26,000,000	$ 1,927,000,000
Write off of debt discount and issuance costs		19,000,000
Amortization of debt discount and debt issuance costs	2,000,000	4,000,000
Unsecured Debt
Debt Instrument [Line Items]
Repayment of debt principal	24,000,000
Line of Credit | Revolving Credit Facility
Debt Instrument [Line Items]
Long-term line of credit	$ 0		$ 0
The Credit Agreement
Debt Instrument [Line Items]
Covenant, adjusted consolidated total debt to consolidated EBITDA ratio	3.75
Number of potential leverage ratio increases | increase	2
Covenant, leverage ratio, maximum, potential increase following material acquisition	4.50
Covenant, consolidated EBITDA to interest expense ratio	3.50
The Credit Agreement | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Variable rate percentage	1.38%
The Credit Agreement | London Interbank Offered Rate (LIBOR) | Minimum
Debt Instrument [Line Items]
Variable rate percentage	1.13%
The Credit Agreement | London Interbank Offered Rate (LIBOR) | Maximum
Debt Instrument [Line Items]
Variable rate percentage	1.75%
The Credit Agreement | Unsecured Debt | Term Loan
Debt Instrument [Line Items]
Debt instrument, face amount	$ 1,900,000,000
The Credit Agreement | Line of Credit | Revolving Credit Facility
Debt Instrument [Line Items]
Unsecured borrowing capacity	750,000,000
Debt payments, excluding refinanced debt
Debt Instrument [Line Items]
Payments of long-term debt	$ 26,000,000	$ 2,000,000

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Apr. 02, 2021	Jan. 01, 2021
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	$ 3,871	$ 3,417
Ending Balance	3,980	3,871
Accumulated other comprehensive loss
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	(46)	(70)
Other comprehensive income (loss)	7	6
Taxes	(3)	4
Reclassification from accumulated other comprehensive loss	5	14
Ending Balance	(37)	(46)
Foreign currency translation adjustments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	30	(33)
Other comprehensive income (loss)	(5)	70
Taxes	1	(7)
Ending Balance	26	30
Unrecognized gain (loss) on derivative instruments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	(70)	(33)
Other comprehensive income (loss)	12	(61)
Taxes	(4)	10
Reclassification from accumulated other comprehensive loss	5	14
Ending Balance	(57)	(70)
Pension adjustments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	(6)	(4)
Other comprehensive income (loss)	0	(3)
Taxes	0	1
Ending Balance	$ (6)	$ (6)

Earnings Per Share (Reconciliat

Earnings Per Share (Reconciliation of weighted average number of shares outstanding) (Details) - shares shares in Millions	3 Months Ended
	Apr. 02, 2021	Apr. 03, 2020
Earnings Per Share [Abstract]
Basic weighted average number of shares outstanding (shares)	142	142
Dilutive common share equivalents-stock options and other stock awards (shares)	2	2
Diluted weighted average number of shares outstanding (shares)	144	144

Earnings Per Share (Narrative)

Earnings Per Share (Narrative) (Details) - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Apr. 02, 2021	Apr. 03, 2020
Earnings Per Share [Abstract]
Anti-dilutive shares (in shares)	1	1
Payments for repurchase of common stock	$ 100

Sale of Accounts Receivable (Na

Sale of Accounts Receivable (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
	Apr. 02, 2021	Apr. 03, 2020
Receivables [Abstract]
Receivable collectible period	30 days
Sales of accounts receivable	$ 465	$ 564
Proceeds from sale of receivables	$ 464	$ 563

Sale of Accounts Receivable (Ac

Sale of Accounts Receivable (Accounts Receivable Sale Activity) (Details) - USD ($) $ in Millions	3 Months Ended
	Apr. 02, 2021	Apr. 03, 2020
Receivables [Abstract]
Sales of accounts receivable	$ 465	$ 564
Cash collections on sold receivables remitted to financial institution	(371)	(367)
Outstanding balance sold to financial institution	94	197
Cash collected but not yet remitted to financial institution	(19)	(60)
Sold receivables due from customers	$ 75	$ 137

Business Segments (Schedule of

Business Segments (Schedule of segment reporting information by segment) (Details) - USD ($) $ in Millions	3 Months Ended
	Apr. 02, 2021	Apr. 03, 2020
Segment Reporting Information [Line Items]
Revenues	$ 3,315	$ 2,889
Operating income (loss)	308	192
Operating Segments | Defense Solutions
Segment Reporting Information [Line Items]
Revenues	1,958	1,705
Operating income (loss)	152	95
Operating Segments | Civil
Segment Reporting Information [Line Items]
Revenues	766	654
Operating income (loss)	74	59
Operating Segments | Health
Segment Reporting Information [Line Items]
Revenues	591	530
Operating income (loss)	102	73
Corporate
Segment Reporting Information [Line Items]
Operating income (loss)	$ (20)	$ (35)

Commitments and Contingencies (

Commitments and Contingencies (Narrative) (Details)	Apr. 05, 2021USD ($)	Oct. 30, 2020USD ($)	Nov. 22, 2019USD ($)	Aug. 30, 2018USD ($)	Apr. 10, 2018USD ($)	Jan. 31, 2021USD ($)	Apr. 02, 2021USD ($)	Dec. 10, 2019USD ($)	Nov. 10, 2015USD ($)
Standby Letters of Credit
Legal Proceedings [Line Items]
Amount outstanding							$ 84,000,000
Performance Guarantee
Legal Proceedings [Line Items]
Surety bonds notional amount							138,000,000
Leidos
Legal Proceedings [Line Items]
Litigation settlement, percentage of total (percentage)						25.00%
Virnet X Inc
Legal Proceedings [Line Items]
Amount awarded from other party		$ 503,000,000		$ 595,000,000	$ 502,000,000
Royalty rate awarded (per device)		$ 0.84		1.20
Awarded to the other party, interest and legal fees				$ 93,000,000
Number of infringed patents			2
Number of infringed other patents			2
Additional costs and interest						$ 75,000,000
MSA Venture
Legal Proceedings [Line Items]
Estimate of possible loss							64,000,000	$ 29,000,000	$ 64,000,000
Estimate of possible loss, amount deferred							$ 32,000,000
MSA Venture | Subsequent Event
Legal Proceedings [Line Items]
Litigation Settlement, Amount Awarded to Other Party	$ 3,000,000
Amount awarded from other party	37,000,000
MSA Venture | Lockheed Martin
Legal Proceedings [Line Items]
Percentage of damages covered, between $38 million and $64 million (percentage)							100.00%
Percentage of damages covered, excess of $64 million settlement amount (percentage)							50.00%
MSA Venture | Lockheed Martin | Subsequent Event
Legal Proceedings [Line Items]
Litigation Settlement, Amount Awarded to Other Party	$ 3,000,000
MSA Venture | Leidos
Legal Proceedings [Line Items]
Estimate of possible loss							$ 38,000,000

Commitments and Contingencies_2

Commitments and Contingencies (Future Expirations Maturity Table) (Details) - Standby Letters of Credit and Surety Bonds $ in Millions	Apr. 02, 2021USD ($)
Guaranteed Obligation, Type [Line Items]
2021 (remainder of year)	$ 104
2022	98
2023	2
2024	2
2025	2
2026 and thereafter	14
Guaranteed obligation	$ 222

Uncategorized Items - ldos-2021

Label	Element	Value
Restricted Cash	us-gaap_RestrictedCash	$ 120,000,000
Restricted Cash	us-gaap_RestrictedCash	$ 157,000,000