Selected Quarterly Financial Data (Unaudited) - Financial Information (Details) - USD ($) $ / shares in Units, $ in Millions |
3 Months Ended | 12 Months Ended | |||||||||||||||||||||||
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Oct. 31, 2018 |
Jul. 31, 2018 |
Apr. 30, 2018 |
Jan. 31, 2018 |
Oct. 31, 2017 |
Jul. 31, 2017 |
Apr. 30, 2017 |
Jan. 31, 2017 |
Oct. 31, 2018 |
Oct. 31, 2017 |
Oct. 31, 2016 |
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| Quarterly Financial Information Disclosure [Abstract] | |||||||||||||||||||||||||
| Revenues | $ 1,648.8 | $ 1,624.3 | $ 1,580.8 | $ 1,588.3 | $ 1,497.9 | $ 1,318.4 | $ 1,310.5 | $ 1,326.7 | $ 6,442.2 | [1] | $ 5,453.6 | [1] | $ 5,144.7 | [1] | |||||||||||
| Gross profit | 183.1 | 177.6 | 175.0 | 159.0 | 160.9 | 134.0 | 145.9 | 131.6 | |||||||||||||||||
| Income (loss) from continuing operations | 8.9 | 33.7 | 25.4 | 28.0 | (2.5) | 32.9 | 31.6 | 16.1 | 95.9 | 78.1 | 62.3 | ||||||||||||||
| Income (loss) from discontinued operations, net of taxes | 0.8 | (0.1) | 1.2 | (0.1) | (1.1) | 0.0 | (0.4) | (72.9) | 1.8 | (74.3) | (5.1) | ||||||||||||||
| Net (loss) income | $ 9.7 | [2] | $ 33.6 | $ 26.6 | $ 27.8 | [3] | $ (3.6) | [4] | $ 32.9 | $ 31.3 | $ (56.8) | $ 97.8 | $ 3.8 | $ 57.2 | |||||||||||
| Net income per common share — Basic | |||||||||||||||||||||||||
| Income (loss) from continuing operations (usd per share) | $ 0.13 | $ 0.51 | $ 0.38 | $ 0.42 | $ (0.04) | $ 0.59 | $ 0.56 | $ 0.29 | $ 1.45 | $ 1.35 | $ 1.11 | ||||||||||||||
| Income (loss) from discontinued operations (usd per share) | 0.01 | 0.00 | 0.02 | 0.00 | (0.02) | 0.00 | (0.01) | (1.30) | 0.03 | (1.29) | (0.09) | ||||||||||||||
| Net income (usd per share) | 0.15 | 0.51 | 0.40 | 0.42 | (0.06) | 0.59 | 0.56 | (1.01) | 1.48 | 0.07 | 1.02 | ||||||||||||||
| Net income per common share — Diluted | |||||||||||||||||||||||||
| Income (loss) from continuing operations (usd per share) | 0.13 | 0.51 | 0.38 | 0.42 | (0.04) | 0.58 | 0.56 | 0.28 | 1.45 | 1.34 | 1.09 | ||||||||||||||
| Loss from discontinued operations (usd per share) | 0.01 | 0.00 | 0.02 | 0.00 | (0.02) | 0.00 | (0.01) | (1.28) | 0.03 | (1.27) | (0.09) | ||||||||||||||
| Net income (usd per share) | $ 0.15 | [2] | $ 0.51 | $ 0.40 | $ 0.42 | [3] | $ (0.06) | [4] | $ 0.58 | $ 0.55 | $ (1.00) | $ 1.47 | $ 0.07 | $ 1.01 | |||||||||||
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- Definition The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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- Definition The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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- Definition Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount after tax of income (loss) from continuing operations attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The amount of net income (loss) from continuing operations per each share of common stock or unit outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The amount of net income (loss) derived from continuing operations during the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount after tax of income (loss) from a discontinued operation attributable to the parent. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Per basic share amount, after tax, of income (loss) from the day-to-day business activities of the discontinued operation and gain (loss) from the disposal of the discontinued operation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Per diluted share amount, after tax, of income (loss) from the day-to-day business activities of the discontinued operation and gain (loss) from the disposal of the discontinued operation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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- Definition Aggregate revenue during the period from services rendered in the normal course of business, after deducting allowances and discounts. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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