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Commitments and Contingencies (Details) (USD $) In Millions, unless otherwise specified	1 Months Ended
	May 31, 2007 entity	Jun. 29, 2012
Insurance
Non-catastrophic property deductible		$ 25
Casualty and catastrophic property deductible		50
Legal
Range of possible loss for certain legal proceedings, minimum		2
Range of possible loss for certain legal proceedings, maximum		$ 14
Class action lawsuits filed against U.S.-based Class I railroads, excluding CSXT (number of entities)	3

The estimated maximum amount of possible loss from the contingency.

The estimated minimum amount of possible loss from the contingency.