XML 128 R118.htm IDEA: XBRL DOCUMENT
v3.10.0.1

LEGAL PROCEEDINGS AND CONTINGENCIES (Details) - Passaic River Alaska - Exelis $ in Millions |  | 12 Months Ended
--- | --- | ---
Mar. 31, 2016 party | Jun. 29, 2018 USD ($)
Site Contingency [Line Items] |  |
Number of responsible parties notified | party | 100 |
Estimated cost for all participating parties of EPA's preferred alternative | $ |  | $ 1,380

X
- Definition Number of Potentially Responsible Parties Notified + References No definition available. + Details
Name: | hrs_NumberofPotentiallyResponsiblePartiesNotified
Namespace Prefix: | hrs_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- 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_SiteContingencyLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Best estimate of the loss exposure for reasonably possible environmental contingencies at an individual site for which no accrual has been recorded. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 30 -Section 50 -Paragraph 10 -Subparagraph (c),(d)(2) -URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13237-110859 Reference 2: http://www.xbrl.org/2003/role/recommendedDisclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 30 -Section 50 -Paragraph 10 -Subparagraph (d)(2) -URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13237-110859 + Details
Name: | us-gaap_SiteContingencyLossExposureNotAccruedBestEstimate
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_EnvironmentalRemediationSiteAxis=hrs_PassaicRiverAlaskaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=hrs_ExelisMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |