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Business Segments - Net Sales and Percentage of Consolidated Net Sales (Detail) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Entity Wide Portfolio Carrying Amount, Major Customer [Line Items]      
Net sales $ 3,424,809us-gaap_SalesRevenueGoodsNet $ 3,439,233us-gaap_SalesRevenueGoodsNet $ 4,200,836us-gaap_SalesRevenueGoodsNet
Tire [Member] | Americas [Member]      
Entity Wide Portfolio Carrying Amount, Major Customer [Line Items]      
Net sales $ 361,546us-gaap_SalesRevenueGoodsNet
/ us-gaap_ProductOrServiceAxis
= ctb_TireMember
/ us-gaap_StatementGeographicalAxis
= us-gaap_AmericasMember		 $ 364,493us-gaap_SalesRevenueGoodsNet
/ us-gaap_ProductOrServiceAxis
= ctb_TireMember
/ us-gaap_StatementGeographicalAxis
= us-gaap_AmericasMember		 $ 549,685us-gaap_SalesRevenueGoodsNet
/ us-gaap_ProductOrServiceAxis
= ctb_TireMember
/ us-gaap_StatementGeographicalAxis
= us-gaap_AmericasMember
Consolidated Net Sales 11.00%ctb_MajorCustomersSalesRevenueGoodsNetPercentage
/ us-gaap_ProductOrServiceAxis
= ctb_TireMember
/ us-gaap_StatementGeographicalAxis
= us-gaap_AmericasMember		 11.00%ctb_MajorCustomersSalesRevenueGoodsNetPercentage
/ us-gaap_ProductOrServiceAxis
= ctb_TireMember
/ us-gaap_StatementGeographicalAxis
= us-gaap_AmericasMember		 13.00%ctb_MajorCustomersSalesRevenueGoodsNetPercentage
/ us-gaap_ProductOrServiceAxis
= ctb_TireMember
/ us-gaap_StatementGeographicalAxis
= us-gaap_AmericasMember