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Income Taxes - Narrative (Details) - USD ($) $ in Millions |  | 3 Months Ended
--- | --- | ---
Dec. 22, 2017 | Jan. 31, 2018
Income Tax Disclosure [Abstract] |  |
Non-cash charges related to the revaluation of our net deferred tax assets and the transition tax on the deemed repatriation of foreign earnings |  | $ 1.7
Revaluation of net deferred tax assets |  | 1.4
Transition tax on deemed repatriation of foreign earnings |  | $ 0.3
Estimated income tax charge | $ 1.7 |

X
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