Financial Instruments and Fair Value Measurements - Summary of Quantitative about Significant Unobservable Inputs Used to Determine Fair Value of Impairment of Long-Lived Assets Held and Used (Detail) - USD ($) $ in Millions |
3 Months Ended | |
---|---|---|
Jan. 31, 2016 |
Jan. 31, 2015 |
|
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ||
Fair Value of Impairment | $ 39.1 | $ 0.2 |
Broker Quote / Indicative Bids [Member] | Level 3 [Member] | ||
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ||
Fair Value of Impairment | $ 34.1 | |
Unobservable Input | Indicative Bids | |
Range of Input Values | 0.00% | |
Sales Value [Member] | Level 3 [Member] | ||
Fair Value Inputs, Assets, Quantitative Information [Line Items] | ||
Fair Value of Impairment | $ 5.0 | $ 0.2 |
Unobservable Input | Sales Value | |
Range of Input Values | 0.00% | 0.00% |