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Receivables - Additional Information (Details) - RSA - USD ($) | Oct. 02, 2020 | Jan. 03, 2020
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Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Authorized amount of accounts receivables outstanding under agreement | $ 100,000,000 |
Outstanding account receivable sold pursuant to agreement | $ 0 | $ 0

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- Definition Transfer of Financial Assets Accounted for as Sales, Amount Authorized + References No definition available. + Details
Name: | hrs_TransferofFinancialAssetsAccountedforasSalesAmountAuthorized
Namespace Prefix: | hrs_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- 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 No definition available. + Details
Name: | us-gaap_AccountsNotesAndLoansReceivableLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Amount of derecognized financial assets from transactions which comprise an initial transfer and an agreement entered into in contemplation of the initial transfer resulting in retention of substantially all of the exposure to the economic return throughout the term of the transaction, at the date of derecognition. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 20 -Section 50 -Paragraph 4D -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121570589&loc=SL51823488-111719 + Details
Name: | us-gaap_TransferOfFinancialAssetsAccountedForAsSalesAmountDerecognized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
Name: | us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=hrs_ReceivableSaleAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |