v3.26.1
Earnings (Loss) Per Share (Tables)
 9 Months Ended
Jun. 30, 2026
Earnings Per Share [Abstract]  
Computation of basic and diluted (loss) earnings per share
Three Months Ended
June 30,		Nine Months Ended
June 30,
2026202520262025
Net earnings for basic earnings per share
$63.4 $108.8 $242.1 $284.7 
Impact of interest expense, net of tax, related to convertible senior notes2.7 2.7 8.1 8.1 
Net earnings for diluted earnings per share
$66.1 $111.5 $250.2 $292.8 
Weighted-average shares for basic earnings per share
45.1 55.7 48.2 56.8 
Effect of dilutive securities:
Stock options0.1 0.1 0.1 0.1 
Restricted stock units0.2 0.4 0.2 0.5 
Market-based performance restricted stock units0.5 0.8 0.5 0.7 
Earnings-based performance restricted stock units— — 0.1 0.1 
Shares issuable upon conversion of convertible senior notes5.4 5.4 5.4 5.4 
Total dilutive securities6.2 6.7 6.3 6.8 
Weighted-average shares for diluted earnings per share
51.3 62.4 54.5 63.6 
Earnings per Common Share:
Basic$1.41 $1.95 $5.02 $5.01 
Diluted$1.29 $1.79 $4.59 $4.60 
Antidilutive Securities Excluded from Computation of Diluted (Loss) Earnings Per Share
Three Months Ended
June 30,		Nine Months Ended
June 30,
2026202520262025
Restricted stock units— — — 0.1 
Market-based performance restricted stock units0.1 — 0.1 —