v3.26.1
Weighted Average Shares Outstanding (Tables)
6 Months Ended
Mar. 31, 2026
Earnings Per Share [Abstract]  
Earnings Per Share
The following table reconciles shares used to calculate basic and diluted earnings per share (in millions):
Three Months Ended
March 31,
Six Months Ended
March 31,
 2026202520262025
Weighted Average Shares Outstanding
Basic weighted average shares outstanding612 659 612 661 
Effect of dilutive securities:
Stock options, unvested restricted stock and
     unvested performance share awards
Diluted weighted average shares outstanding614 661 614 663 
Antidilutive Securities
Stock options and unvested restricted stock— 0.1 — 0.1