Consolidated Statements of Comprehensive Income (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Net income	$ 75.3	$ 64.1
Other comprehensive income:
Unrealized loss on cash flow hedges arising during the period, net of tax of $(0.2) million	(0.3)	0
Reclassification adjustment from cash flow hedges included in net income, net of tax of $0.2 million	0	0.2
Foreign currency translation adjustments, net of tax of $0.3 million and $0.1 million	0.6	0.3
Other comprehensive income	0.3	0.5
Comprehensive income	75.6	64.6
Less: Comprehensive income attributable to noncontrolling interest	0.3	0.1
Comprehensive income attributable to Kansas City Southern and subsidiaries	$ 75.3	$ 64.5