Earnings Per Share of Common Stock (Tables)

6 Months Ended

Jun. 30, 2015

Reconciliation of Earnings and Share Data used in Basic and Diluted Earnings per Share Computations

The following is a reconciliation of the earnings and share data used in the basic and diluted earnings per share computations for the three and six months ended June 30, 2015 and 2014:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2015		2014		2015		2014
	(in millions, except share amounts)
Net earnings available to Alleghany stockholders	$	182.5	$	149.0	$	307.7	$	353.9
Effect of dilutive securities		—		—		—		—
Income available to common stockholders for diluted earnings per share	$	182.5	$	149.0	$	307.7	$	353.9
Weighted average common shares outstanding applicable to basic earnings per share		15,994,969		16,442,556		16,004,596		16,567,155
Effect of dilutive securities		8,054		—		—		—
Adjusted weighted average common shares outstanding applicable to diluted earnings per share		16,003,023		16,442,556		16,004,596		16,567,155