Stockholders' Equity (Table)

6 Months Ended

Mar. 31, 2024

Stockholders' Equity Note [Abstract]

Class of Treasury Stock

	Three Months Ended March 31,				Six Months Ended March 31,
	2024		2023		2024		2023
Shares repurchased	0.4		0.9		0.6		2.7
Average price per share (a)	$	56.46	$	29.74	$	52.28	$	25.52
Total share repurchase cost (b)	$	23.1	$	27.6	$	32.5	$	68.8

(a)Average price per share excludes accrued excise tax and broker’s commissions, which are included in “Total share repurchase cost” within this table.

(b)“Purchases of treasury stock” in the Condensed Consolidated Statements of Cash Flows for the six months ended March 31, 2024 excluded $1.5 of repurchases of common stock that did not settle until April 2024 and $0.2 of accrued excise tax that had not been paid as of March 31, 2024. “Purchases of treasury stock” in the Condensed Consolidated Statements of Cash Flows for the six months ended March 31, 2023 excluded $0.3 of accrued excise tax that had not been paid as of March 31, 2023.