Elimination of Deferred Statutory Profit Sharing Liability, Net	12 Months Ended
	Dec. 31, 2014
Restructuring and Related Activities [Abstract]
Elimination of Deferred Statutory Profit Sharing Liability, Net	Elimination of Deferred Statutory Profit Sharing Liability, Net During the second quarter of 2012, the Company completed an organizational restructuring whereby employees of KCSM became employees of KCSM Servicios, S.A. de C.V. (“KCSM Servicios”), a wholly-owned subsidiary of the Company. KCSM Servicios provides employee services to KCSM, and KCSM pays KCSM Servicios market-based rates for these services. The effective date of this organizational restructuring was May 1, 2012. Mexican employees are entitled to receive Mexican statutory profit sharing. The related cash payment to employees is based on an employer’s net profit determined under accounting principles prescribed in Mexican law, rather than its net profit determined under U.S. GAAP. U.S. GAAP requires the recording of deferred liabilities or assets for financial reporting purposes on the differences between the amounts determined under the two different accounting principles. As a result of the organizational restructuring, KCSM’s obligation to pay Mexican statutory profit sharing terminated on the effective date. Accordingly, in the second quarter of 2012, KCSM recognized a $43.0 million net reduction to operating expense. This reduction includes the elimination of $47.8 million of the deferred Mexican statutory profit sharing liability, net of $4.8 million of transaction costs. KCSM Servicios became obligated to pay Mexican statutory profit sharing to its employees beginning on the effective date of the organizational restructuring.

The entire disclosure for restructuring and related activities. Description of restructuring activities such as exit and disposal activities, include facts and circumstances leading to the plan, the expected plan completion date, the major types of costs associated with the plan activities, total expected costs, the accrual balance at the end of the period, and the periods over which the remaining accrual will be settled.

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