Earnings Per Share (Notes)

9 Months Ended

Sep. 30, 2014

Earnings Per Share [Abstract]

EARNINGS PER SHARE

EARNINGS PER SHARE

We compute basic earnings per share by dividing net earnings attributable to Tesoro Corporation stockholders by the weighted average number of common shares outstanding during the period. Diluted earnings per share include the effects of potentially dilutive shares outstanding during the period. Our share calculations are presented below (in millions):

	Three Months Ended September 30,		Nine Months Ended September 30,
	2014	2013	2014	2013
Weighted average common shares outstanding	127.9	134.6	129.5	135.8
Common stock equivalents	1.8	2.2	2.2	2.3
Total diluted shares	129.7	136.8	131.7	138.1

Potentially dilutive common stock equivalents are excluded from the calculation of diluted earnings per share if the effect of including such securities in the calculation would have been anti-dilutive. Anti-dilutive securities were 0.1 millionand 0.2 million for the three months ended September 30, 2014 and 2013, respectively, and0.1 million for both the nine months ended September 30, 2014 and 2013, respectively.