Stockholders' Equity (Tables) - Stock Options [Member]

3 Months Ended

Dec. 31, 2021

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Summary of Activity for Stock Option Awards

The following is a summary of the activity for stock option awards:

	Three-Months Ended
	December 31, 2021
	Number of options			Weighted-Average Exercise Price per Share
Options, beginning balance		5,339		$	68.21
Options granted		437			117.60
Options exercised		(57	)		55.89
Options forfeited		(8	)		83.89
Options, ending balance		5,711			72.10

Changes in Non-vested Stock Options

Changes in non-vested stock options were as follows:

	Three-Months Ended
	December 31, 2021
	Number of options			Weighted-Average Grant Date Fair Value per Share
Non-vested options outstanding, beginning balance		2,063		$	25.77
Options granted		437			42.19
Options vested		(648	)		26.53
Options forfeited		(8	)		27.97
Non-vested options outstanding, ending balance		1,844			29.39

Stock Options Vested, or Expected to Vest and Exercisable

Information about stock options that have vested, or are expected to vest, and are exercisable at December 31, 2021 was as follows:

	Number of options		Weighted-Average Exercise Price		Weighted-Average Remaining Life in Years		Aggregate Intrinsic Value
Options outstanding		5,711	$	72.10		6.1	$	217,330
Options vested and exercisable		3,867		63.41		4.9		178,128
Options vested and expected to vest		5,632		71.77		6.0		215,890