v3.26.3
Share-Based Compensation (Tables)
12 Months Ended
Sep. 30, 2026
Share-Based Payment Arrangement [Abstract]  
Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions We estimated the fair value of each stock option on the date of grant using the Black-Scholes pricing model and the following assumptions:
202620252024
Average risk-free interest rate3.74 %4.07 %4.22 %
Expected dividend yield1.37 %1.76 %1.79 %
Expected volatility31 %35 %34 %
Expected term (years)4.94.94.8
Schedule of Share-Based Compensation, Stock Options, Activity
A summary of stock option activity for the year ended September 30, 2026, is as follows:
Shares
(in thousands)
Wtd. Avg.
Exercise
Price
Wtd. Avg.
Remaining
Contractual
Term (years)
Aggregate
Intrinsic Value
of In-The-Money
Options
(in millions)
Outstanding at October 1, 20251,453 $233.92 
Granted201 402.20 
Exercised(449)211.46 
Forfeited(7)334.17 
Canceled(1)350.76 
Outstanding at September 30, 20261,197 270.06 5.5$198 
Exercisable at September 30, 2026819 233.57 4.2165 
Schedule of Nonvested Performance-based Units Activity
A summary of performance share activity for the year ended September 30, 2026, is as follows:
Shares
(in thousands)
Wtd. Avg.
Grant Date
Share
Fair Value
Outstanding at October 1, 2025169 $338.95 
Granted (1)
51 591.67 
Adjustment for performance results achieved (2)
(17)340.77 
Vested and issued(35)340.77 
Forfeited(4)377.38 
Outstanding at September 30, 2026164 416.07 
(1) Performance shares granted assuming achievement of performance goals at target.
(2) Adjustments were due to the number of shares vested under fiscal 2023 awards at the end of the three-year performance period ended September 30, 2025, being lower than the target number of shares.
Schedule of Performance Shares Vested
The following table summarizes information about performance shares vested during the years ended September 30, 2026, 2025, and 2024:
202620252024
Percent payout70 %— %92 %
Shares vested (in thousands)35 — 31 
Total fair value of shares vested (in millions)$14 $— $9 
Schedule of Share-Based Payment Award, Performance-Based Units, Valuation Assumptions
The per share fair value of performance share awards granted during the years ended September 30, 2026, 2025, and 2024, was $591.67, $387.72, and $295.06, respectively, which we determined using a Monte Carlo simulation and the following assumptions:
202620252024
Average risk-free interest rate3.59 %4.11 %4.45 %
Expected dividend yield1.37 %1.76 %1.79 %
Expected volatility32 %34 %30 %
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity
A summary of restricted stock and restricted stock unit activity for the year ended September 30, 2026, is as follows:
Shares
(in thousands)
Wtd. Avg.
Grant Date
Share
Fair Value
Outstanding at October 1, 2025325 $278.96 
Granted172 402.40 
Vested(174)272.61 
Forfeited(12)316.52 
Outstanding at September 30, 2026311 347.06