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SUMMARY OF SIGNIFICANT ACCOUNT POLICIES (Components Of Company's Identifiable Intangible Assets) (Details) (USD $)
12 Months Ended
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 639,648,000us-gaap_IntangibleAssetsGrossExcludingGoodwill 349,024,000us-gaap_IntangibleAssetsGrossExcludingGoodwill
Finite and indefinite-lived assets, Net 459,459,000us-gaap_IntangibleAssetsNetExcludingGoodwill 197,163,000us-gaap_IntangibleAssetsNetExcludingGoodwill
Trademarks/Brand Names Indefinite    
Goodwill And Other Intangible Assets [Line Items]    
Indefinite-lived intangible assets 48,484,000us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill
/ us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis
= iart_TrademarksBrandNamesIndefiniteMember
48,484,000us-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 345,082,000us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= iart_CompletedTechnologyMember
81,238,000us-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 282,162,000us-gaap_FiniteLivedIntangibleAssetsNet
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= iart_CompletedTechnologyMember
35,895,000us-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 162,031,000us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_CustomerListsMember
146,627,000us-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 74,378,000us-gaap_FiniteLivedIntangibleAssetsNet
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_CustomerListsMember
67,003,000us-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 44,520,000us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= iart_TrademarksBrandNamesMember
33,703,000us-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 28,765,000us-gaap_FiniteLivedIntangibleAssetsNet
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= iart_TrademarksBrandNamesMember
18,055,000us-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 34,721,000us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= iart_SupplierRelationshipsIdentifiableIntangibleAssetsMember
34,721,000us-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 23,912,000us-gaap_FiniteLivedIntangibleAssetsNet
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= iart_SupplierRelationshipsIdentifiableIntangibleAssetsMember
25,416,000us-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 4,810,000us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_OtherIntangibleAssetsMember
4,251,000us-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 1,758,000us-gaap_FiniteLivedIntangibleAssetsNet
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_OtherIntangibleAssetsMember
2,310,000us-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 $ 1,400,000us-gaap_OtherIndefiniteLivedIntangibleAssets
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_InProcessResearchAndDevelopmentMember
$ 1,400,000us-gaap_OtherIndefiniteLivedIntangibleAssets
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_InProcessResearchAndDevelopmentMember