The following table presents net income, the weighted average common shares used in calculating basic EPS and those used in calculating diluted EPS for each period presented below. Diluted EPS reflects the incremental common shares from common shares issuable upon vesting of performance share units (“PSUs”) and the purchase of shares under the Employee Stock Purchase Plan (the “ESPP”) using the treasury stock method. The outstanding restricted stock units (“RSUs”) have non-forfeitable rights to dividend equivalents and are therefore included in calculating basic and diluted EPS under the two-class method.


	Three Months Ended September 30,				Nine Months Ended September 30,
	2026		2025		2026		2025
Numerator
Net income	$	275.2	$	265.6	$	847.9	$	647.5
Less: Earnings allocated to participating securities	(2.2)		(2.3)		(6.8)		(5.8)
Net income used in basic and diluted per common share calculations	$	273.0	$	263.3	$	841.1	$	641.7

Denominator
Weighted average common shares outstanding used in basic per common share calculations	49,283,903		50,395,469		49,500,842		50,621,953
Incremental common shares from:
PSUs	431,952		488,827		495,270		525,846
ESPP	725		—		—		—
Weighted average common shares outstanding used in diluted per common share calculations	49,716,580		50,884,296		49,996,112		51,147,799

Earnings per common share – Basic	$	5.54	$	5.22	$	16.99	$	12.67
Earnings per common share – Diluted	$	5.49	$	5.17	$	16.82	$	12.55