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Basis of Presentation and Summary of Significant Accounting Policies (Tables)

3 Months Ended

Apr. 03, 2026

Accounting Policies [Abstract]

Schedule of Changes in Estimates on Contracts

Changes in estimates on contracts were as follows:

						Three Months Ended
(in millions, except per share data)						April 3, 2026						April 4, 2025
Favorable impact						$	37					$	53
Unfavorable impact						(46)						(23)
Net impact to income before income taxes						$	(9)					$	30
Impact on diluted EPS attributable to Leidos common stockholders						$	(0.05)					$	0.17

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- Definition

Tabular disclosure of the change in an accounting estimate, including a change that occurs in an interim period. If a change in accounting estimate affects several future periods (for example, a change in the service life of a depreciable asset) disclose the effect on income from continuing operations, net income (or other appropriate captions of changes in the applicable net assets or performance indicator), and any related per-share amounts of the current period. Disclosure of the effects of a change in an accounting estimate that occurs in the ordinary course of business (such as uncollectible accounts or inventory obsolescence) is not required, unless the effect is material.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 270
-SubTopic 10
-Section 45
-Paragraph 14
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482989/270-10-45-14

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483443/250-10-50-4

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