v3.3.0.814
Summary of Performance-based Shares Activity (Detail)
12 Months Ended
Sep. 30, 2015
$ / shares
shares
Weighted- Average Remaining Contractual Term  
Outstanding at September 30, 2015 5 years
Aggregate Intrinsic Value  
Stock price used to calculate aggregate intrinsic value $ 69.66
Performance Awards  
Shares  
Beginning balance | shares (2,075,240)
Granted | shares 785,884 [1]
Vested | shares (1,221,020)
Unearned | shares 24,924
Forfeited | shares (351,218)
Ending balance | shares (1,263,962)
Weighted- Average Grant Date Fair Value  
Beginning balance $ 44.32
Granted 69.78 [1]
Vested 42.68
Unearned 42.68
Forfeited 54.25
Ending balance $ 57.61
Weighted- Average Remaining Contractual Term  
Outstanding at September 30, 2015 8 months 12 days
Aggregate Intrinsic Value  
Outstanding at September 30, 2015 $ 88,000,000 [2]
[1] Represents the maximum number of performance-based shares which could be earned.
[2] Calculated by multiplying the closing stock price on the last trading day of fiscal 2015 of $69.66 by the number of instruments.