SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	12 Months Ended
Dec. 31, 2015
Accounting Policies [Abstract]
BASIS OF PRESENTATION	BASIS OF PRESENTATION. C.H. Robinson Worldwide, Inc. and our subsidiaries (“the company,” “we,” “us,” or “our”) are a global provider of transportation services and logistics solutions through a network of offices operating in North America, Europe, Asia, and South America. The consolidated financial statements include the accounts of C.H. Robinson Worldwide, Inc. and our majority owned and controlled subsidiaries. Our minority interests in subsidiaries are not significant. All intercompany transactions and balances have been eliminated in the consolidated financial statements. We had previously reported Payment Services revenues separately from Transportation revenues. The prior year amounts have been combined to conform with the current period presentation. This change in presentation had no effect on our prior year consolidated results of operations, financial condition, or cash flows.
USE OF ESTIMATES	USE OF ESTIMATES. The preparation of financial statements, in conformity with accounting principles generally accepted in the United States, requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities. We are also required to disclose contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Our ultimate results could differ from those estimates.
REVENUE RECOGNITION	REVENUE RECOGNITION. Total revenues consist of the total dollar value of goods and services purchased from us by customers. Our net revenues are our total revenues less purchased transportation and related services, including contracted motor carrier, rail, ocean, air, and other costs, and the purchase price and services related to the products we source. We act principally as the service provider for these transactions and recognize revenue as these services are rendered or goods are delivered. At that time, our obligations to the transactions are completed and collection of receivables is reasonably assured. Most transactions in our Transportation and Sourcing businesses are recorded at the gross amount we charge our customers for the service we provide and goods we sell. In these transactions, we are the primary obligor, we have credit risk, we have discretion to select the supplier, and we have latitude in pricing decisions. Additionally, in our Sourcing business, we take loss of inventory risk during shipment and have general inventory risk. Certain transactions in customs brokerage, managed services, freight forwarding, and sourcing are recorded at the net amount we charge our customers for the service we provide because many of the factors stated above are not present.
ALLOWANCE FOR DOUBTFUL ACCOUNTS	ALLOWANCE FOR DOUBTFUL ACCOUNTS. Accounts receivable are reduced by an allowance for amounts that may become uncollectible in the future. We continuously monitor payments from our customers and maintain a provision for uncollectible accounts based upon our customer aging trends, historical loss experience, and any specific customer collection issues that we have identified.
FOREIGN CURRENCY	FOREIGN CURRENCY. Most balance sheet accounts of foreign subsidiaries are translated or remeasured at the current exchange rate as of the end of the year. Statement of operations items are translated at average exchange rates during the year. The resulting translation adjustment is recorded net of tax as a separate component of comprehensive income in our statements of operations and comprehensive income.
SEGMENT REPORTING AND GEOGRAPHIC INFORMATION	SEGMENT REPORTING AND GEOGRAPHIC INFORMATION. We operate in the transportation and logistics industry. We provide a wide range of products and services to our customers and contract carriers, including transportation services, produce sourcing, freight consolidation, contract warehousing, and information services. Each of these is a significant component to optimizing logistics solutions for our customers. These services are performed throughout our network of offices, as an integrated offering for which our customers are typically provided a single invoice. Our network of offices work together to complete transactions and collectively meet the needs of our customers. For large multi-location customers, we often coordinate our efforts in one location and rely on multiple locations to deliver specific geographic or modal needs. As an example, approximately 49 percent of our truckload transactions are shared transactions between offices. In addition, our methodology of providing services is very similar across all locations. The majority of our global network operates on a common technology platform that is used to match customer needs with supplier capabilities, to collaborate with other locations, and to utilize centralized support resources to complete all facets of the transaction. Accordingly, our chief operating decision maker analyzes our business as a single segment, relying on net revenues and operating income across our network of offices as the primary performance measures.
CASH AND CASH EQUIVALENTS	CASH AND CASH EQUIVALENTS. Cash and cash equivalents consist of bank deposits.
PREPAID EXPENSES AND OTHER	PREPAID EXPENSES AND OTHER. Prepaid expenses and other include such items as prepaid rent, software maintenance contracts, insurance premiums, other prepaid operating expenses, and inventories, consisting primarily of produce and related products held for resale.
PROPERTY AND EQUIPMENT	PROPERTY AND EQUIPMENT. Property and equipment are recorded at cost. Maintenance and repair expenditures are charged to expense as incurred. Depreciation is computed using the straight-line method over the estimated lives of the assets of 3 to 30 years. Amortization of leasehold improvements is computed over the shorter of the lease term or the estimated useful lives of the improvements.
GOODWILL AND OTHER INTANGIBLE ASSETS	GOODWILL AND OTHER INTANGIBLE ASSETS. Goodwill is the difference between the purchase price of a company and the fair market value of the acquired company’s net identifiable assets. Other intangible assets include definite-lived customer lists, contract carrier lists, and non-competition agreements and indefinite-lived trademarks. The definite-lived intangible assets are being amortized using the straight-line method over their estimated lives, ranging from 3 to 8 years. The indefinite-lived trademarks are not amortized. Goodwill is not amortized, but is tested for impairment using a fair value approach. Goodwill is tested for impairment annually or more frequently if events warrant. Intangible assets are evaluated for impairment whenever events or changes in circumstances indicate that the carrying amount may not be recoverable.
OTHER ASSETS	OTHER ASSETS. Other assets include such items as purchased and internally developed software, and the investments related to our nonqualified deferred compensation plan. We amortize software using the straight-line method over 3 years.
INCOME TAXES	INCOME TAXES. Income taxes are accounted for using the asset and liability method. Under this method, deferred tax assets and liabilities are recognized for the future tax consequences of temporary differences between the carrying amounts and tax bases of assets and liabilities using enacted rates. Annual tax provisions include amounts considered sufficient to pay assessments that may result from examination of prior year tax returns; however, the amount ultimately paid upon resolution of issues raised may differ from the amounts accrued. The financial statement benefits of an uncertain income tax position are recognized when more likely than not, based on the technical merits, the position will be sustained upon examination. Unrecognized tax benefits are, more likely than not, owed to a taxing authority, and the amount of the contingency can be reasonably estimated. Uncertain income tax positions are included in “Noncurrent income taxes payable” in the consolidated balance sheets. Provisions are made for U.S. taxes on undistributed earnings of foreign subsidiaries and related companies.
COMPREHENSIVE INCOME	COMPREHENSIVE INCOME. Comprehensive income includes any changes in the equity of an enterprise from transactions and other events and circumstances from non-owner sources. Our only component of other comprehensive income is foreign currency translation adjustment. It is presented on our consolidated statements of operations and comprehensive income.
STOCK-BASED COMPENSATION	STOCK-BASED COMPENSATION. We issue stock awards, including stock options, performance shares, and restricted stock units, to key employees and outside directors. In general, the awards vest over five years, either based on the company’s earnings growth or the passage of time. The fair value of each share-based payment award is established on the date of grant. For grants of performance shares and restricted stock units, the fair value is established based on the market price on the date of the grant, discounted for post-vesting holding restrictions. The discounts on outstanding grants vary from 17 percent to 22 percent and are calculated using the Black-Scholes option pricing model. Changes in measured stock volatility and interest rates are the primary reason for changes in the discount. For grants of options, we use the Black-Scholes option pricing model to estimate the fair value of share-based payment awards. The determination of the fair value of share-based awards is affected by our stock price and a number of assumptions, including expected volatility, expected life, risk-free interest rate, and expected dividends.
RECENTLY ISSUED ACCOUNTING PRNOUNCEMENTS	In May 2014, the Financial Accounting Standards Board (“FASB”) issued a final standard on revenue recognition from contracts with customers. The new standard sets forth a single comprehensive model for recognizing and reporting revenue. The new standard is effective for annual reporting periods after December 15, 2017, and permits the use of either a retrospective or a cumulative effect transition method. We are evaluating the effect of the new standard on our consolidated financial statements and related disclosures, and have not yet selected a transition method or determined the impact of this standard on our consolidated financial statements. In November 2015, FASB issued Accounting Standards Update (“ASU”) 2015-17, “Balance Sheet Classification of Deferred Taxes.” ASU 2015-17 requires that deferred tax liabilities and assets be classified as noncurrent in a classified statement of financial position. ASU 2015-17 is effective for financial statements issued for fiscal years beginning after December 15, 2016, and interim periods within those fiscal years. Early adoption is permitted. We are evaluating the effect of the new standard on our consolidated financial statements and related disclosures, and have not yet selected a transition method or determined the impact of this standard on our consolidated financial statements.

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)

12 Months Ended

Dec. 31, 2015

BASIS OF PRESENTATION. C.H. Robinson Worldwide, Inc. and our subsidiaries (“the company,” “we,” “us,” or “our”) are a global provider of transportation services and logistics solutions through a network of offices operating in North America, Europe, Asia, and South America. The consolidated financial statements include the accounts of C.H. Robinson Worldwide, Inc. and our majority owned and controlled subsidiaries. Our minority interests in subsidiaries are not significant. All intercompany transactions and balances have been eliminated in the consolidated financial statements. We had previously reported Payment Services revenues separately from Transportation revenues. The prior year amounts have been combined to conform with the current period presentation. This change in presentation had no effect on our prior year consolidated results of operations, financial condition, or cash flows.

USE OF ESTIMATES

USE OF ESTIMATES. The preparation of financial statements, in conformity with accounting principles generally accepted in the United States, requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities. We are also required to disclose contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Our ultimate results could differ from those estimates.

REVENUE RECOGNITION

REVENUE RECOGNITION. Total revenues consist of the total dollar value of goods and services purchased from us by customers. Our net revenues are our total revenues less purchased transportation and related services, including contracted motor carrier, rail, ocean, air, and other costs, and the purchase price and services related to the products we source. We act principally as the service provider for these transactions and recognize revenue as these services are rendered or goods are delivered. At that time, our obligations to the transactions are completed and collection of receivables is reasonably assured. Most transactions in our Transportation and Sourcing businesses are recorded at the gross amount we charge our customers for the service we provide and goods we sell. In these transactions, we are the primary obligor, we have credit risk, we have discretion to select the supplier, and we have latitude in pricing decisions. Additionally, in our Sourcing business, we take loss of inventory risk during shipment and have general inventory risk. Certain transactions in customs brokerage, managed services, freight forwarding, and sourcing are recorded at the net amount we charge our customers for the service we provide because many of the factors stated above are not present.

ALLOWANCE FOR DOUBTFUL ACCOUNTS

ALLOWANCE FOR DOUBTFUL ACCOUNTS. Accounts receivable are reduced by an allowance for amounts that may become uncollectible in the future. We continuously monitor payments from our customers and maintain a provision for uncollectible accounts based upon our customer aging trends, historical loss experience, and any specific customer collection issues that we have identified.

FOREIGN CURRENCY

FOREIGN CURRENCY. Most balance sheet accounts of foreign subsidiaries are translated or remeasured at the current exchange rate as of the end of the year. Statement of operations items are translated at average exchange rates during the year. The resulting translation adjustment is recorded net of tax as a separate component of comprehensive income in our statements of operations and comprehensive income.

SEGMENT REPORTING AND GEOGRAPHIC INFORMATION

SEGMENT REPORTING AND GEOGRAPHIC INFORMATION. We operate in the transportation and logistics industry. We provide a wide range of products and services to our customers and contract carriers, including transportation services, produce sourcing, freight consolidation, contract warehousing, and information services. Each of these is a significant component to optimizing logistics solutions for our customers.

These services are performed throughout our network of offices, as an integrated offering for which our customers are typically provided a single invoice. Our network of offices work together to complete transactions and collectively meet the needs of our customers. For large multi-location customers, we often coordinate our efforts in one location and rely on multiple locations to deliver specific geographic or modal needs. As an example, approximately 49 percent of our truckload transactions are shared transactions between offices. In addition, our methodology of providing services is very similar across all locations. The majority of our global network operates on a common technology platform that is used to match customer needs with supplier capabilities, to collaborate with other locations, and to utilize centralized support resources to complete all facets of the transaction. Accordingly, our chief operating decision maker analyzes our business as a single segment, relying on net revenues and operating income across our network of offices as the primary performance measures.

CASH AND CASH EQUIVALENTS

CASH AND CASH EQUIVALENTS. Cash and cash equivalents consist of bank deposits.

PREPAID EXPENSES AND OTHER

PREPAID EXPENSES AND OTHER. Prepaid expenses and other include such items as prepaid rent, software maintenance contracts, insurance premiums, other prepaid operating expenses, and inventories, consisting primarily of produce and related products held for resale.

PROPERTY AND EQUIPMENT

PROPERTY AND EQUIPMENT. Property and equipment are recorded at cost. Maintenance and repair expenditures are charged to expense as incurred. Depreciation is computed using the straight-line method over the estimated lives of the assets of 3 to 30 years. Amortization of leasehold improvements is computed over the shorter of the lease term or the estimated useful lives of the improvements.

GOODWILL AND OTHER INTANGIBLE ASSETS

GOODWILL AND OTHER INTANGIBLE ASSETS. Goodwill is the difference between the purchase price of a company and the fair market value of the acquired company’s net identifiable assets. Other intangible assets include definite-lived customer lists, contract carrier lists, and non-competition agreements and indefinite-lived trademarks. The definite-lived intangible assets are being amortized using the straight-line method over their estimated lives, ranging from 3 to 8 years. The indefinite-lived trademarks are not amortized. Goodwill is not amortized, but is tested for impairment using a fair value approach. Goodwill is tested for impairment annually or more frequently if events warrant. Intangible assets are evaluated for impairment whenever events or changes in circumstances indicate that the carrying amount may not be recoverable.

OTHER ASSETS

OTHER ASSETS. Other assets include such items as purchased and internally developed software, and the investments related to our nonqualified deferred compensation plan. We amortize software using the straight-line method over 3 years.

INCOME TAXES

INCOME TAXES. Income taxes are accounted for using the asset and liability method. Under this method, deferred tax assets and liabilities are recognized for the future tax consequences of temporary differences between the carrying amounts and tax bases of assets and liabilities using enacted rates.

Annual tax provisions include amounts considered sufficient to pay assessments that may result from examination of prior year tax returns; however, the amount ultimately paid upon resolution of issues raised may differ from the amounts accrued.

The financial statement benefits of an uncertain income tax position are recognized when more likely than not, based on the technical merits, the position will be sustained upon examination. Unrecognized tax benefits are, more likely than not, owed to a taxing authority, and the amount of the contingency can be reasonably estimated. Uncertain income tax positions are included in “Noncurrent income taxes payable” in the consolidated balance sheets.

Provisions are made for U.S. taxes on undistributed earnings of foreign subsidiaries and related companies.

COMPREHENSIVE INCOME

COMPREHENSIVE INCOME. Comprehensive income includes any changes in the equity of an enterprise from transactions and other events and circumstances from non-owner sources. Our only component of other comprehensive income is foreign currency translation adjustment. It is presented on our consolidated statements of operations and comprehensive income.

STOCK-BASED COMPENSATION

STOCK-BASED COMPENSATION. We issue stock awards, including stock options, performance shares, and restricted stock units, to key employees and outside directors. In general, the awards vest over five years, either based on the company’s earnings growth or the passage of time. The fair value of each share-based payment award is established on the date of grant. For grants of performance shares and restricted stock units, the fair value is established based on the market price on the date of the grant, discounted for post-vesting holding restrictions. The discounts on outstanding grants vary from 17 percent to 22 percent and are calculated using the Black-Scholes option pricing model. Changes in measured stock volatility and interest rates are the primary reason for changes in the discount.

For grants of options, we use the Black-Scholes option pricing model to estimate the fair value of share-based payment awards. The determination of the fair value of share-based awards is affected by our stock price and a number of assumptions, including expected volatility, expected life, risk-free interest rate, and expected dividends.

RECENTLY ISSUED ACCOUNTING PRNOUNCEMENTS

In May 2014, the Financial Accounting Standards Board (“FASB”) issued a final standard on revenue recognition from contracts with customers. The new standard sets forth a single comprehensive model for recognizing and reporting revenue. The new standard is effective for annual reporting periods after December 15, 2017, and permits the use of either a retrospective or a cumulative effect transition method. We are evaluating the effect of the new standard on our consolidated financial statements and related disclosures, and have not yet selected a transition method or determined the impact of this standard on our consolidated financial statements.

In November 2015, FASB issued Accounting Standards Update (“ASU”) 2015-17, “Balance Sheet Classification of Deferred Taxes.” ASU 2015-17 requires that deferred tax liabilities and assets be classified as noncurrent in a classified statement of financial position. ASU 2015-17 is effective for financial statements issued for fiscal years beginning after December 15, 2016, and interim periods within those fiscal years. Early adoption is permitted. We are evaluating the effect of the new standard on our consolidated financial statements and related disclosures, and have not yet selected a transition method or determined the impact of this standard on our consolidated financial statements.