Earnings Per Share (Tables)

12 Months Ended

Sep. 30, 2020

Earnings Per Share [Abstract]

Reconciliation of Net Earnings to Net Earnings Per Share Basic and Diluted

The following is a reconciliation of net earnings to basic earnings per share and diluted earnings per share:

	Year Ended September 30,
	2020		2019		2018
Numerator:
Net earnings	$	240,395	$	259,602	$	180,378
Denominator:
Basic shares outstanding		62,267		61,950		61,493
Dilutive effect of stock options and restricted stock units		1,942		2,548		2,383
Diluted shares outstanding		64,209		64,498		63,876
Income per common share:
Basic earnings per share	$	3.86	$	4.19	$	2.93
Diluted earnings per share	$	3.74	$	4.02	$	2.82

Anti-dilutive Stock Options Excluded from Computation of Earnings Per Share

The following stock option grants were outstanding during the fiscal years ended September 30, 2020, 2019 and 2018, but were excluded from the computation of diluted earnings per share because their inclusion would have been anti-dilutive.

	Year Ended September 30,
	2020		2019		2018
Options		660		25		760
Weighted-average option price	$	104.45	$	96.54	$	78.72

Schedule of Treasury Stock Shares Held for Deferred Compensation Included in Basic and Diluted Shares Outstanding

The weighted-average shares of common stock outstanding for basic and diluted earnings per share included the weighted-average treasury stock shares held for deferred compensation obligations of the following:

	Year Ended September 30,
	2020		2019		2018
Weighted-average treasury stock shares held for deferred compensation obligations		211		208		198