Shareholders' Equity (Tables)

12 Months Ended

Dec. 31, 2022

Class of Stock Disclosures [Abstract]

Summary of Repurchases of Common Stock

Repurchases of Common Stock were as follows (in millions, except share amounts):

	Year Ended December 31,		Three Months Ended December 31, (transition period)		Year Ended September 30,
	2022		2021		2021		2020
Shares of Common Stock repurchased		1,508,467		1,362,831		927,934		550,853
Cost of shares of Common Stock repurchased	$	155.0	$	150.0	$	107.8	$	40.8