Consolidated Statements of Comprehensive Income (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Net income	$ 90.7	$ 100.1	$ 286.9	$ 235.9
Other comprehensive income (loss):
Unrealized loss on cash flow hedges arising during the period, net of tax of $(0.2) million and $(0.6) million	(0.4)	0	(1.0)	0
Reclassification adjustment from cash flow hedges included in net income, net of tax of $0.1 million, $0.2 million and $0.2 million	0.1	0	0.3	0.2
Amortization of prior service credit, net of tax of $(0.1) million	0	0	(0.1)	(0.1)
Foreign currency translation adjustments, net of tax of $0.3 million, $(0.5) million, $0.3 million and $(0.4) million	0.5	(1.0)	0.7	(0.6)
Other comprehensive income (loss)	0.2	(1.0)	(0.1)	(0.5)
Comprehensive income	90.9	99.1	286.8	235.4
Less: Comprehensive income attributable to noncontrolling interest	0.6	0.3	1.4	1.3
Comprehensive income attributable to Kansas City Southern and subsidiaries	$ 90.3	$ 98.8	$ 285.4	$ 234.1