Earnings Per Share

12 Months Ended

Dec. 31, 2019

Earnings Per Share [Abstract]

Earnings Per Share

The following table shows a reconciliation of the numerators and denominators used in calculating basic and diluted earnings per share.

(In millions, except per share amounts)	2019		2018		2017
Numerators
Net income (loss) attributable to W. R. Grace & Co. shareholders	$	126.3	$	167.6	$	11.2
Denominators
Weighted average common shares—basic calculation	66.8		67.2		68.1
Dilutive effect of employee stock options	0.1		0.1		0.1
Weighted average common shares—diluted calculation	66.9		67.3		68.2
Basic earnings per share	$	1.89	$	2.49	$	0.16
Diluted earnings per share	$	1.89	$	2.49	$	0.16

There were approximately 1.0 million, 1.7 million and 1.5 million anti-dilutive options outstanding for the years ended December 31, 2019, 2018, and 2017, respectively.

On February 5, 2015, the Company announced that its Board of Directors had authorized a share repurchase program of up to $500 million, which it completed on July 10, 2017. On February 8, 2017, the Company announced that its Board of Directors had authorized an additional share repurchase program of up to $250 million. The timing of the repurchases and the actual amount repurchased will depend on a variety of factors, including the market price of the Company’s shares, strategic priorities for the deployment of capital, and general market and economic conditions. During 2019, 2018, and 2017, the Company repurchased 409,769; 1,171,141; and 935,435 shares of Company common stock for $29.8 million, $80.0 million, and $65.0 million, respectively, pursuant to the terms of the share repurchase programs. As of December 31, 2019, $109.1 million remained under the current authorization.