Equity (Tables)

6 Months Ended

Jun. 30, 2017

Equity [Abstract]

Schedule of Stockholders' Equity

The following tables summarize the changes in equity (in millions):

	Three Months Ended June 30, 2017								Three Months Ended June 30, 2016
	Kansas City Southern Stockholders’ Equity			Noncontrolling Interest		Total Equity			Kansas City Southern Stockholders’ Equity			Noncontrolling Interest		Total Equity
Beginning balance	$	4,154.0		$	314.9	$	4,468.9		$	3,941.4		$	310.7	$	4,252.1
Net income	134.4			0.3		134.7			120.1			0.4		120.5
Other comprehensive loss	(1.8		)	—		(1.8		)	(0.6		)	—		(0.6		)
Dividends on common stock	(34.9		)	—		(34.9		)	(35.6		)	—		(35.6		)
Share repurchases	(64.7		)	—		(64.7		)	(8.2		)	—		(8.2		)
Options exercised and stock subscribed, net of shares withheld for employee taxes	(0.1		)	—		(0.1		)	(1.4		)	—		(1.4		)
Excess tax benefit from share-based compensation	—			—		—			(0.1		)	—		(0.1		)
Share-based compensation	5.7			—		5.7			5.0			—		5.0
Ending balance	$	4,192.6		$	315.2	$	4,507.8		$	4,020.6		$	311.1	$	4,331.7

	Six Months Ended June 30, 2017								Six Months Ended June 30, 2016
	Kansas City Southern Stockholders’ Equity			Noncontrolling Interest		Total Equity			Kansas City Southern Stockholders’ Equity			Noncontrolling Interest		Total Equity
Beginning balance	$	4,089.9		$	314.6	$	4,404.5		$	3,914.3		$	310.4	$	4,224.7
Cumulative-effect adjustment (i)	2.5			—		2.5			—			—		—
Net income	281.0			0.6		281.6			227.9			0.7		228.6
Other comprehensive loss	(1.0		)	—		(1.0		)	(0.7		)	—		(0.7		)
Dividends on common stock	(69.9		)	—		(69.9		)	(71.2		)	—		(71.2		)
Dividends on $25 par preferred stock	(0.1		)	—		(0.1		)	(0.1		)	—		(0.1		)
Share repurchases	(120.4		)	—		(120.4		)	(59.2		)	—		(59.2		)
Options exercised and stock subscribed, net of shares withheld for employee taxes	0.1			—		0.1			(1.1		)	—		(1.1		)
Excess tax benefit from share-based compensation	—			—		—			(0.4		)	—		(0.4		)
Share-based compensation	10.5			—		10.5			11.1			—		11.1
Ending balance	$	4,192.6		$	315.2	$	4,507.8		$	4,020.6		$	311.1	$	4,331.7

(i) The Company recognized a $2.5 million net cumulative-effect adjustment to equity as of January 1, 2017, due to the adoption of ASU 2016-09, Improvements to Employee Share-Based Payment Accounting. For additional discussion, see Note 1 - Basis of Presentation.

Schedule of Cash Dividends Declared per Common Share

The following table presents the amount of cash dividends declared per common share by the Company’s Board of Directors:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2017		2016		2017		2016
Cash dividends declared per common share	$	0.330	$	0.330	$	0.660	$	0.660