EARNINGS PER SHARE

The numerator for basic and diluted earnings per share (“EPS”) is net earnings attributable to Mosaic. The denominator for basic EPS is the weighted average number of shares outstanding during the period. The denominator for diluted EPS also includes the weighted average number of additional common shares that would have been outstanding if the dilutive potential common shares had been issued, unless the shares are anti-dilutive.

The following is a reconciliation of the numerator and denominator for the basic and diluted EPS computations:



	Years Ended December 31,
(in millions)	2018		2017			2016
Net earnings (loss) attributable to Mosaic	$	470.0	$	(107.2	)	$	297.8
Basic weighted average number of shares outstanding attributable to common stockholders	384.8		350.9			350.4
Dilutive impact of share-based awards	1.6		—			1.3
Diluted weighted average number of shares outstanding	386.4		350.9			351.7
Basic net earnings (loss) per share	$	1.22	$	(0.31	)	$	0.85
Diluted net earnings (loss) per share	$	1.22	$	(0.31	)	$	0.85

A total of 2.0 million shares for 2018, 3.5 million shares for 2017, and 3.0 million shares for 2016 of common stock subject to issuance upon exercise of stock options have been excluded from the calculation of diluted EPS because the effect would have been anti-dilutive.