DESCRIPTION OF PLAN - Narrative (Details) - EBP 015	12 Months Ended
Dec. 31, 2025 USD ($) year	Dec. 31, 2024 USD ($)
EBP, Description of Plan [Line Items]
Required service period	1 year
Employer contribution, matching percentage	100.00%
Employer contribution, participant compensation matched, percentage	6.00%
Employer contribution, participant compensation matched, percentage, pension plans	5.00%
Participant contribution, automatic deferral rate	6.00%
Participant loan, incremental borrowing amount	$ 100
Participant loan, minimum amount	$ 500
Participant loans, maximum percentage of vested portion	50.00%
Participant loans, maximum borrowing amount	$ 50,000
Note receivable from participant, primary residence, maximum borrowing term	10 years
Note receivable from participant, transfers, borrowing term	10 years
Employer contribution vesting percentage	100.00%
Employer contribution vesting service period	3 years
Employer contribution maximum vesting age \| year	55
Employment period required to avoid forfeiture	5 years
Forfeited amounts included in Plan assets	$ 3,693,064	$ 2,938,578
Reduction in company contributions from forfeited non-vested accounts	$ 4,648,148
Maximum percentage of participant account that may be invested in company common stock, investment transfer	20.00%
Maximum percentage of participant account that may be invested in company common stock, new investments	20.00%
Percentage of newly made matching contributions allowed to invest in company common stock	100.00%
Dividend vesting percentage	100.00%
Minimum
EBP, Description of Plan [Line Items]
Note receivable from participant, general loan, borrowing term	1 year
Maximum
EBP, Description of Plan [Line Items]
Note receivable from participant, general loan, borrowing term	5 years

EBP, Dividend Vesting Percentage

No definition available.

Name:	hrs_EBPDividendVestingPercentage
Namespace Prefix:	hrs_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

EBP, Employer Contribution Maximum Vesting Age

+ References

No definition available.

+ Details

Name:	hrs_EBPEmployerContributionMaximumVestingAge
Namespace Prefix:	hrs_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

EBP, Employer Contribution, Participant Compensation Matched, Percentage, Pension Plans

+ References

No definition available.

+ Details

Name:	hrs_EBPEmployerContributionParticipantCompensationMatchedPercentagePensionPlans
Namespace Prefix:	hrs_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

EBP, Employer Contribution Vesting Percentage

+ References

No definition available.

+ Details

Name:	hrs_EBPEmployerContributionVestingPercentage
Namespace Prefix:	hrs_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

EBP, Employer Contribution Vesting Service Period

+ References

No definition available.

+ Details

Name:	hrs_EBPEmployerContributionVestingServicePeriod
Namespace Prefix:	hrs_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

EBP, Forfeited Nonvested Account, Return To Employment Period Required To Avoid Forfeiture

+ References

No definition available.

+ Details

Name:	hrs_EBPForfeitedNonvestedAccountReturnToEmploymentPeriodRequiredToAvoidForfeiture
Namespace Prefix:	hrs_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

EBP, Maximum Percentage Of Participant Account That May Be Invested In Company Common Stock, Investment Transfer

+ References

No definition available.

+ Details

Name:	hrs_EBPMaximumPercentageOfParticipantAccountThatMayBeInvestedInCompanyCommonStockInvestmentTransfer
Namespace Prefix:	hrs_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

EBP, Maximum Percentage Of Participant Account That May Be Invested In Company Common Stock, New Investments

+ References

No definition available.

+ Details

Name:	hrs_EBPMaximumPercentageOfParticipantAccountThatMayBeInvestedInCompanyCommonStockNewInvestments
Namespace Prefix:	hrs_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

EBP, Note Receivable from Participant, Account, Incremental Borrowing, Amount

+ References

No definition available.

+ Details

Name:	hrs_EBPNoteReceivableFromParticipantAccountIncrementalBorrowingAmount
Namespace Prefix:	hrs_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

EBP, Note Receivable From Participant, Account, Primary Residence, Maximum Borrowing Term

+ References

No definition available.

+ Details

Name:	hrs_EBPNoteReceivableFromParticipantAccountPrimaryResidenceMaximumBorrowingTerm
Namespace Prefix:	hrs_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

EBP, Note Receivable From Participant, Account, Transfers, Borrowing Term

+ References

No definition available.

+ Details

Name:	hrs_EBPNoteReceivableFromParticipantAccountTransfersBorrowingTerm
Namespace Prefix:	hrs_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

EBP, Note Receivable From Participant, General Loan, Borrowing Term

+ References

No definition available.

+ Details

Name:	hrs_EBPNoteReceivableFromParticipantGeneralLoanBorrowingTerm
Namespace Prefix:	hrs_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

EBP, Percentage Of Newly Made Matching Contributions Allowed To Invest In Company Common Stock

+ References

No definition available.

+ Details

Name:	hrs_EBPPercentageOfNewlyMadeMatchingContributionsAllowedToInvestInCompanyCommonStock
Namespace Prefix:	hrs_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

EBP, Requisite Service Period

+ References

No definition available.

+ Details

Name:	hrs_EBPRequisiteServicePeriod
Namespace Prefix:	hrs_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 962
-SubTopic 205
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478416/962-205-50-1

+ Details

Name:	us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanLineItems
Namespace Prefix:	us-gaap-ebp_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of employer matching contribution on eligible participant contribution to employee stock purchase, saving, or similar plan (employee benefit plan (EBP)).

+ References

+ Details

Name:	us-gaap-ebp_EmployeeBenefitPlanEmployerContributionMatchingPercentage
Namespace Prefix:	us-gaap-ebp_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of participant compensation eligible for employer matching contribution for participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)).

+ References

+ Details

Name:	us-gaap-ebp_EmployeeBenefitPlanEmployerContributionParticipantCompensationMatchedPercentage
Namespace Prefix:	us-gaap-ebp_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of plan asset, in forfeited nonvested account, no longer allocated to participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)).

+ References

+ Details

Name:	us-gaap-ebp_EmployeeBenefitPlanForfeitedNonvestedAccount
Namespace Prefix:	us-gaap-ebp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of decrease in forfeited nonvested account of employee stock purchase, saving, or similar plan (employee benefit plan (EBP)) from employer contribution.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 962
-SubTopic 325
-Name Accounting Standards Codification
-Section 55
-Paragraph 17
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478873/962-325-55-17

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 962
-SubTopic 205
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (j)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478416/962-205-50-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 962
-SubTopic 205
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6A-04(5)(c))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477804/962-205-S99-1

+ Details

Name:	us-gaap-ebp_EmployeeBenefitPlanForfeitedNonvestedAccountDecreaseForEmployerContribution
Namespace Prefix:	us-gaap-ebp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of maximum account balance that participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)) can borrow.

+ References

+ Details

Name:	us-gaap-ebp_EmployeeBenefitPlanNoteReceivableFromParticipantAccountMaximumBorrowingAmount
Namespace Prefix:	us-gaap-ebp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Percentage of maximum account balance that participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)) can borrow to total participant account balance.

+ References

+ Details

Name:	us-gaap-ebp_EmployeeBenefitPlanNoteReceivableFromParticipantAccountMaximumBorrowingToTotalAccountPercentage
Namespace Prefix:	us-gaap-ebp_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of minimum account balance that participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)) can borrow.

+ References

+ Details

Name:	us-gaap-ebp_EmployeeBenefitPlanNoteReceivableFromParticipantAccountMinimumBorrowingAmount
Namespace Prefix:	us-gaap-ebp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Percentage of eligible compensation contributed for participant automatically enrolled in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)).

+ References

+ Details

Name:	us-gaap-ebp_EmployeeBenefitPlanParticipantContributionAutomaticDeferralRate
Namespace Prefix:	us-gaap-ebp_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	dei_LegalEntityAxis=hrs_EBP015Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: