XML 57 R45.htm IDEA: XBRL DOCUMENT v3.10.0.1
Goodwill and Intangible Assets - Estimated Aggregate Amortization Expense (Details)
$ in Millions
Oct. 31, 2018
USD ($)
Estimated aggregate future amortization expense  
Expense remainder of fiscal year $ 37.6
2020 68.0
2021 58.8
2022 49.4
2023 41.3
Thereafter $ 157.2