Net Earnings Per Share

Basic net earnings per share is computed by dividing net earnings available for basic common shares by the weighted average number of shares of common stock outstanding. Diluted net earnings per share is computed by dividing net earnings available for diluted common shares by the sum of weighted average number of shares of common stock outstanding and dilutive potential common stock. Diluted net earnings per share is calculated using the “if-converted” treasury stock method.

Basic and Dilutive Net Earnings Per Share Reconciliations



	Three Months Ended				Six Months Ended
	August 31				August 31
(In thousands except per share data)	2017		2016		2017		2016
Net earnings	$	181,424	$	162,362	$	393,126	$	337,722

Weighted average common shares outstanding	182,868		191,539		184,034		192,534
Dilutive potential common shares:
Stock options	1,465		1,599		1,337		1,423
Stock-settled stock units and awards	363		485		407		480
Weighted average common shares and dilutive potential common shares	184,696		193,623		185,778		194,437

Basic net earnings per share	$	0.99	$	0.85	$	2.14	$	1.75
Diluted net earnings per share	$	0.98	$	0.84	$	2.12	$	1.74

Certain options to purchase shares of common stock were outstanding and not included in the calculation of diluted net earnings per share because their inclusion would have been antidilutive. On a weighted average basis, for the three months ended August 31, 2017 and 2016, options to purchase 3,130,285 shares and 2,964,494 shares of common stock, respectively, were not included. For the six months ended August 31, 2017 and 2016, weighted average options to purchase 2,854,557 shares and 2,802,204 shares, respectively, were not included.