Share-Based Compensation Plans - RSU Activity (Details) - RSUs - $ / shares shares in Millions |
12 Months Ended | ||
|---|---|---|---|
Oct. 31, 2016 |
Oct. 31, 2015 |
Oct. 31, 2014 |
|
| Number of Shares | |||
| Beginning balance (in shares) | 1.3 | ||
| Granted (in shares) | 0.3 | ||
| Vested (in shares) | (0.3) | ||
| Forfeited (in shares) | (0.2) | ||
| Ending balance (in shares) | 1.0 | 1.3 | |
| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] | |||
| Beginning balance (usd per share) | $ 25.79 | ||
| Granted (usd per share) | 35.62 | $ 29.31 | $ 27.82 |
| Vested (usd per share) | 23.70 | ||
| Forfeited (usd per share) | 26.39 | ||
| Ending balance (usd per share) | $ 28.83 | $ 25.79 | |
| Shares Paid for Tax Withholding for Share Based Compensation | 0.1 | ||