Property and Equipment (Including Concession Assets) (Details) - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Property and equipment (including concession assets), gross	$ 3,783.2	$ 3,517.6
Accumulated depreciation and amortization	788.4	712.8
Property and equipment (including concession assets), net	2,994.8	2,804.8
Accumulated amortization	519.8	483.1
Concession assets, net of accumulated amortization	2,040.9	2,007.6
Land [Member]
Property, Plant and Equipment [Line Items]
Property and equipment (including concession assets), gross	76.9	76.9
Concession land rights [Member]
Property, Plant and Equipment [Line Items]
Property and equipment (including concession assets), gross	141.2	141.2
Road property [Member]
Property, Plant and Equipment [Line Items]
Property and equipment (including concession assets), gross	2,514.0	2,420.9
Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment (including concession assets), gross	964.5	782.9
Technology and other [Member]
Property, Plant and Equipment [Line Items]
Property and equipment (including concession assets), gross	46.8	43.8
Construction in progress [Member]
Property, Plant and Equipment [Line Items]
Property and equipment (including concession assets), gross	$ 39.8	$ 51.9

Kansas City Southern de Mexico, S.A. de C.V. 10-Q