Edith River Derailment	3 Months Ended
Edith River Derailment	Mar. 31, 2012
EDITH RIVER DERAILMENT [Abstract]
Schedule of Business Insurance Recoveries [Table Text Block]	EDITH RIVER DERAILMENT: On December 27, 2011, a train operated by the Company's subsidiary, Genesee & Wyoming Australia Pty Ltd (GWA), derailed in the vicinity of the Edith River Bridge in Australia's Northern Territory (the Edith River Derailment). Flood waters associated with heavy rainfall from Cyclone Grant washed away the southern portion of the Edith River Bridge while a northbound GWA intermodal train consisting of three locomotives, an unoccupied crew van and 33 wagons was passing over the bridge en route to Darwin. The locomotives were damaged and the crew van and several intermodal containers and wagons containing copper concentrate were derailed into the river. The railroad segment between Katherine and Darwin remained out of service for approximately 60 days. The Edith River Bridge reopened on February 29, 2012. In December 2011, the Company recorded a liability of A$15.0 million (or $15.3 million at the exchange rate on December 31, 2011) for the estimated repair and related costs associated with the Edith River Derailment. Since the Company believes substantially all of these costs will be recovered through insurance, the Company also recorded a receivable of A$14.0 million (or $14.3 million at the exchange rate on December 31, 2011), with the difference representing the Company's insurance deductible. During the three months ended March 31, 2012, the Company made cash payments of A$15.0 million (or $15.8 million at the average exchange rate during the period) as a result of the derailment and received cash proceeds from insurance of A$11.3 million (or $12.1 million at the exchange rate on the date received). The Company increased its estimate of costs associated with the Edith River Derailment by A$9.0 million (or $9.3 million at the exchange rate on March 31, 2012) during the three months ended March 31, 2012. Accordingly, the Company increased its recorded liability and insurance receivable by A$9.0 million (or $9.3 million at the exchange rate on March 31, 2012). The Company believes it is possible that additional claims related to the Edith River Derailment may arise and additional costs may be incurred. The Company is unable to estimate the range of such claims based on currently available information. However, the Company does not anticipate that these additional claims or costs, if any, will have a material adverse affect on its operating results, financial condition or liquidity.

Tabular disclosure of business interruption insurance recoveries. This may include the nature of the event resulting in business interruption losses, the aggregate amount of business interruption insurance recoveries recognized during the period, and the line item(s) in the statement of operations in which those recoveries are classified (including amounts reported as an extraordinary item).

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