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Acquisitions and Divestitures, Goodwill, and Intangible Assets (Tables)
 12 Months Ended
Dec. 31, 2020
Business Combinations, Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Estimated Fair Value of Assets Acquired and Liabilities Assumed on Acquisition Date The following table summarizes the allocation of the $9.7 billion cash purchase price to the estimated fair values of the assets acquired and liabilities assumed on the acquisition date, with the excess recorded as goodwill:
Cash and equivalents$45 
Accounts receivable155 
Unbilled receivables415 
Other current assets303 
Property, plant and equipment, net326 
Intangible assets, net2,066 
Goodwill7,935 
Other noncurrent assets369 
Total assets$11,614 
Accounts payable$(135)
Customer advances and deposits(151)
Current lease obligation(51)
Other current liabilities(434)
Noncurrent lease obligation(207)
Noncurrent deferred tax liability(355)
Other noncurrent liabilities(532)
Total liabilities$(1,865)
Net assets acquired$9,749 
Schedule of Pro Forma Information The following pro forma information presents our consolidated revenue and earnings from continuing operations as if the acquisition of CSRA and the related financing transactions had occurred on January 1, 2017:
Year Ended December 312018
Revenue$37,534 
Earnings from continuing operations3,390 
Diluted earnings per share from continuing operations$11.33 
Schedule of Changes in Carrying Amount of Goodwill
The changes in the carrying amount of goodwill by reporting unit were as follows:
AerospaceMarine SystemsCombat SystemsInformation TechnologyMission SystemsTechnologiesTotal Goodwill
December 31, 2018 (a)$2,813 $297 $2,633 $9,622 $4,229 $— $19,594 
Acquisitions/divestitures (b)3 — 15 77 6 — 101 
Other (c)15 — 33 1 (67)— (18)
December 31, 2019 (a)2,831 297 2,681 9,700 4,168 — 19,677 
Acquisitions (b)72 — 65 — — — 137 
Other (c)162 — 40 46 (9)— 239 
Change in reporting unit composition (d)— — — (9,746)(4,159)13,905 — 
December 31, 2020 (e)$3,065 $297 $2,786 $— $— $13,905 $20,053 
(a)Goodwill in the Information Technology and Mission Systems reporting units is net of $536 and $1.3 billion of accumulated impairment losses, respectively.
(b)Includes adjustments during the purchase price allocation period.
(c)Consists primarily of adjustments for foreign currency translation and for the allocation of goodwill to operations classified as held for sale.
(d)Effective December 31, 2020, we reorganized our Information Technology and Mission Systems operating segments into a single Technologies segment. See Note A for additional information regarding the segment reorganization. This reorganization similarly changed the composition of our reporting units. Accordingly, goodwill of the Information Technology and Mission Systems reporting units was combined and assigned to the Technologies reporting unit.
(e)Goodwill in the Technologies reporting unit is net of $1.8 billion of accumulated impairment losses.
Schedule of Intangible Assets
Intangible assets consisted of the following:
Gross Carrying Amount (a)Accumulated AmortizationNet Carrying AmountGross Carrying Amount (a)Accumulated AmortizationNet Carrying Amount
December 3120202019
Contract and program intangible assets (b)$3,399 $(1,600)$1,799 $3,776 $(1,779)$1,997 
Trade names and trademarks516 (229)287 474 (195)279 
Technology and software134 (106)28 164 (126)38 
Other intangible assets161 (158)3 159 (158)1 
Total intangible assets$4,210 $(2,093)$2,117 $4,573 $(2,258)$2,315 
(a)Changes in gross carrying amounts consist primarily of adjustments for write-offs of fully amortized intangible assets, acquired intangible assets and foreign currency translation.
(b)Consists of acquired backlog and probable follow-on work and associated customer relationships.
Schedule of Amortization Lives (In Years) of Intangible Assets The amortization lives (in years) of our intangible assets on December 31, 2020, were as follows:
Intangible AssetRange of Amortization Life
Contract and program intangible assets
7-30
Trade names and trademarks30
Technology and software
5-15
Other intangible assets7
Schedule of Expected Annual Amortization Expense Over the Next Five Years of Intangible Assets We expect to record annual amortization expense over the next five years as follows:
Year Ended December 31Amortization Expense
2021$221 
2022197 
2023180 
2024170 
2025162