v3.26.3
EARNINGS PER SHARE - Computation of Basic and Diluted Earnings Per Share (Detail) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 12 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2024
Numerator for earnings per share:      
Net income $ 2,108 $ 2,074 $ 1,715
LESS: NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS (1) 0 (1)
Net income attributable to TD Group 2,107 2,074 1,714
Less: Dividends declared or paid on participating securities (59) (208) (233)
NET INCOME APPLICABLE TO TD GROUP COMMON STOCKHOLDERS $ 2,048 $ 1,866 $ 1,481
Denominator for basic and diluted earnings per share under the two-class method:      
Weighted-average common shares outstanding - basic (in shares) 55.9 56.3 55.8
Weighted-average common shares outstanding - diluted (in shares) 55.9 56.3 55.8
Vested options deemed participating securities 1.7 1.9 2.0
Weighted-average shares outstanding - basic (in shares) 57.6 58.2 57.8
Weighted-average shares outstanding - diluted (in shares) 57.6 58.2 57.8
Earnings per share—basic (in usd per share) $ 35.51 $ 32.08 $ 25.62
Earnings per share - diluted (in usd per share) $ 35.51 $ 32.08 $ 25.62