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SUMMARY OF SIGNIFICANT ACCOUNT POLICIES (Components Of Company's Identifiable Intangible Assets) (Details) (USD $) | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013
Goodwill And Other Intangible Assets [Line Items] |  |
Accumulated Amortization | $ (180,189,000)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization | $ (151,861,000)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
Finite and indefinite-lived intangible asests, Cost | 639,648,000 us-gaap_IntangibleAssetsGrossExcludingGoodwill | 349,024,000 us-gaap_IntangibleAssetsGrossExcludingGoodwill
Finite and indefinite-lived assets, Net | 459,459,000 us-gaap_IntangibleAssetsNetExcludingGoodwill | 197,163,000 us-gaap_IntangibleAssetsNetExcludingGoodwill
Trademarks/Brand Names Indefinite |  |
Goodwill And Other Intangible Assets [Line Items] |  |
Indefinite-lived intangible assets | 48,484,000 us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill / us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis = iart_TrademarksBrandNamesIndefiniteMember | 48,484,000 us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill / us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis = iart_TrademarksBrandNamesIndefiniteMember
Completed Technology |  |
Goodwill And Other Intangible Assets [Line Items] |  |
Weighted Average Life, Years | 18 years | 12 years
Finite-lived intangible assets, Cost | 345,082,000 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = iart_CompletedTechnologyMember | 81,238,000 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = iart_CompletedTechnologyMember
Accumulated Amortization | (62,920,000)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = iart_CompletedTechnologyMember | (45,343,000)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = iart_CompletedTechnologyMember
Finite-lived intangible assets, Net | 282,162,000 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = iart_CompletedTechnologyMember | 35,895,000 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = iart_CompletedTechnologyMember
Customer Relationship |  |
Goodwill And Other Intangible Assets [Line Items] |  |
Weighted Average Life, Years | 12 years | 12 years
Finite-lived intangible assets, Cost | 162,031,000 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerListsMember | 146,627,000 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerListsMember
Accumulated Amortization | (87,653,000)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerListsMember | (79,624,000)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerListsMember
Finite-lived intangible assets, Net | 74,378,000 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerListsMember | 67,003,000 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerListsMember
Trademarks Brand Names |  |
Goodwill And Other Intangible Assets [Line Items] |  |
Weighted Average Life, Years | 34 years | 31 years
Finite-lived intangible assets, Cost | 44,520,000 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = iart_TrademarksBrandNamesMember | 33,703,000 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = iart_TrademarksBrandNamesMember
Accumulated Amortization | (15,755,000)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = iart_TrademarksBrandNamesMember | (15,648,000)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = iart_TrademarksBrandNamesMember
Finite-lived intangible assets, Net | 28,765,000 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = iart_TrademarksBrandNamesMember | 18,055,000 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = iart_TrademarksBrandNamesMember
Supplier Relationships |  |
Goodwill And Other Intangible Assets [Line Items] |  |
Weighted Average Life, Years | 27 years | 27 years
Finite-lived intangible assets, Cost | 34,721,000 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = iart_SupplierRelationshipsIdentifiableIntangibleAssetsMember | 34,721,000 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = iart_SupplierRelationshipsIdentifiableIntangibleAssetsMember
Accumulated Amortization | (10,809,000)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = iart_SupplierRelationshipsIdentifiableIntangibleAssetsMember | (9,305,000)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = iart_SupplierRelationshipsIdentifiableIntangibleAssetsMember
Finite-lived intangible assets, Net | 23,912,000 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = iart_SupplierRelationshipsIdentifiableIntangibleAssetsMember | 25,416,000 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = iart_SupplierRelationshipsIdentifiableIntangibleAssetsMember
All Other |  |
Goodwill And Other Intangible Assets [Line Items] |  |
Weighted Average Life, Years | 4 years | 4 years
Finite-lived intangible assets, Cost | 4,810,000 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherIntangibleAssetsMember | 4,251,000 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherIntangibleAssetsMember
Accumulated Amortization | (3,052,000)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherIntangibleAssetsMember | (1,941,000)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherIntangibleAssetsMember
Finite-lived intangible assets, Net | 1,758,000 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherIntangibleAssetsMember | 2,310,000 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherIntangibleAssetsMember
In-Process Research And Development |  |
Goodwill And Other Intangible Assets [Line Items] |  |
Other Indefinite-lived Intangible Assets | $ 1,400,000 us-gaap_OtherIndefiniteLivedIntangibleAssets / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_InProcessResearchAndDevelopmentMember | $ 1,400,000 us-gaap_OtherIndefiniteLivedIntangibleAssets / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_InProcessResearchAndDevelopmentMember

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