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GOODWILL AND OTHER INTANGIBLE ASSETS Summary of Other Intangible Assets, with Finite Lives (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Finite-Lived Intangible Assets [Line Items]    
Accumulated amortization $ (36,917)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization $ (33,325)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
Net 96,455us-gaap_FiniteLivedIntangibleAssetsNet  
Other Intangible Assets    
Finite-Lived Intangible Assets [Line Items]    
Gross 133,372us-gaap_FiniteLivedIntangibleAssetsGross
/ chrw_IntangibleAssetsByMajorClassAxis
= us-gaap_OtherIntangibleAssetsMember
148,917us-gaap_FiniteLivedIntangibleAssetsGross
/ chrw_IntangibleAssetsByMajorClassAxis
= us-gaap_OtherIntangibleAssetsMember
Accumulated amortization (36,917)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
/ chrw_IntangibleAssetsByMajorClassAxis
= us-gaap_OtherIntangibleAssetsMember
(33,325)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
/ chrw_IntangibleAssetsByMajorClassAxis
= us-gaap_OtherIntangibleAssetsMember
Net $ 96,455us-gaap_FiniteLivedIntangibleAssetsNet
/ chrw_IntangibleAssetsByMajorClassAxis
= us-gaap_OtherIntangibleAssetsMember
$ 115,592us-gaap_FiniteLivedIntangibleAssetsNet
/ chrw_IntangibleAssetsByMajorClassAxis
= us-gaap_OtherIntangibleAssetsMember