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LEASES AND RELATED PARTY LEASES (Narrative) (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Operating Leased Assets [Line Items] |  |  |
Total rental expense | $ 10.2 us-gaap_OperatingLeasesRentExpenseNet | $ 10.4 us-gaap_OperatingLeasesRentExpenseNet | $ 10.9 us-gaap_OperatingLeasesRentExpenseNet
Related Party |  |  |
Operating Leased Assets [Line Items] |  |  |
Total rental expense | 0.3 us-gaap_OperatingLeasesRentExpenseNet / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = iart_RelatedPartyMember | 0.3 us-gaap_OperatingLeasesRentExpenseNet / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = iart_RelatedPartyMember | 0.3 us-gaap_OperatingLeasesRentExpenseNet / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = iart_RelatedPartyMember
Term of lease | March 31, 2022 |  |
Option to renew lease | March 31, 2032 |  |
Payment per year to related party lessor | 0.1 iart_PaymentPerYearToRelatedPartyLessor / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = iart_RelatedPartyMember |  |
Percent of manufacturing facility owned by corporation whose shareholders are trusts whose beneficiaries include family members of company's former chairman | 50.00%iart_PercentOfManufacturingFacilityOwnedByCorporationWhoseShareholdersAreTrustsWhoseBeneficiariesIncludeFamilyMembersOfCompanysFormerChairman / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = iart_RelatedPartyMember |  |
Annual rate of lease agreement | $ 0.3 iart_AnnualRateOfLeaseAgreement / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = iart_RelatedPartyMember |  |
Five-Year Option Lease From November 1, 2032 Through October 31, 2037 | Related Party |  |  |
Operating Leased Assets [Line Items] |  |  |
Option to extend lease, years | 5 years |  |
Period for extended lease | November 1, 2032 through October 31, 2037 |  |
Five-Year Option Lease From November 1, 2037 Through October 31, 2042 | Related Party |  |  |
Operating Leased Assets [Line Items] |  |  |
Option to extend lease, years | 5 years |  |
Period for extended lease | November 1, 2037 through October 31, 2042 |  |

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- Definition Annual rate of lease agreement. + References No definition available. + Details
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Namespace Prefix: | iart_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Option to extend lease, years. + References No definition available. + Details
Name: | iart_OptionToExtendLeaseYears
Namespace Prefix: | iart_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Definition Option to renew lease. + References No definition available. + Details
Name: | iart_OptionToRenewLease
Namespace Prefix: | iart_
Data Type: | us-types:dateStringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Payment per year to related party lessor. + References No definition available. + Details
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Namespace Prefix: | iart_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Percent of manufacturing facility owned by corporation whose shareholders are trusts, whose beneficiaries include family members of Company's former Chairman, who is a current director. + References No definition available. + Details
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Namespace Prefix: | iart_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Period for extended lease. + References No definition available. + Details
Name: | iart_PeriodForExtendedLease
Namespace Prefix: | iart_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Term of lease. + References No definition available. + Details
Name: | iart_TermOfLease
Namespace Prefix: | iart_
Data Type: | us-types:dateStringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_OperatingLeasedAssetsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41499-112717 + Details
Name: | us-gaap_OperatingLeasesRentExpenseNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
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- Details
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Namespace Prefix: |
Data Type: | na
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Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |