CONDENSED CONSOLIDATED BALANCE SHEET (Unaudited) (Parenthetical) - $ / shares shares in Millions |
Apr. 30, 2017 |
Oct. 31, 2016 |
|---|---|---|
| Stockholders' Equity Attributable to Parent [Abstract] | ||
| Preferred stock, par value (in dollars per share) | $ 0.01 | $ 0.01 |
| Preferred stock, shares authorized (in shares) | 100 | 100 |
| Preferred stock, issued and outstanding (in shares) | 0 | 0 |
| Common stock, par value (in dollars per share) | $ 0.01 | $ 0.01 |
| Common stock, shares authorized (in shares) | 1,000 | 1,000 |
| Common Stock, Shares, Issued | 187 | 172 |
| Treasury Stock, Shares | 2 | 2 |