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Restructuring and Related Costs - Cumulative Restructuring and Related Charges (Details) $ in Millions | Oct. 31, 2019 USD ($)
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Restructuring Cost and Reserve [Line Items] |
Restructuring and related cost, cumulative cost | $ 101.1
GCA Restructuring Program |
Restructuring Cost and Reserve [Line Items] |
Restructuring and related cost, cumulative cost | 34.6
2020 Vision Restructuring Program |
Restructuring Cost and Reserve [Line Items] |
Restructuring and related cost, cumulative cost | 66.5
External Support Fees |
Restructuring Cost and Reserve [Line Items] |
Restructuring and related cost, cumulative cost | 33.5
External Support Fees | GCA Restructuring Program |
Restructuring Cost and Reserve [Line Items] |
Restructuring and related cost, cumulative cost | 3.5
External Support Fees | 2020 Vision Restructuring Program |
Restructuring Cost and Reserve [Line Items] |
Restructuring and related cost, cumulative cost | 30.0
Employee Severance |
Restructuring Cost and Reserve [Line Items] |
Restructuring and related cost, cumulative cost | 31.0
Employee Severance | GCA Restructuring Program |
Restructuring Cost and Reserve [Line Items] |
Restructuring and related cost, cumulative cost | 18.0
Employee Severance | 2020 Vision Restructuring Program |
Restructuring Cost and Reserve [Line Items] |
Restructuring and related cost, cumulative cost | 13.0
Other Project Fees |
Restructuring Cost and Reserve [Line Items] |
Restructuring and related cost, cumulative cost | 23.0
Other Project Fees | GCA Restructuring Program |
Restructuring Cost and Reserve [Line Items] |
Restructuring and related cost, cumulative cost | 12.3
Other Project Fees | 2020 Vision Restructuring Program |
Restructuring Cost and Reserve [Line Items] |
Restructuring and related cost, cumulative cost | 10.7
Lease Exit |
Restructuring Cost and Reserve [Line Items] |
Restructuring and related cost, cumulative cost | 8.4
Lease Exit | GCA Restructuring Program |
Restructuring Cost and Reserve [Line Items] |
Restructuring and related cost, cumulative cost | 0.7
Lease Exit | 2020 Vision Restructuring Program |
Restructuring Cost and Reserve [Line Items] |
Restructuring and related cost, cumulative cost | 7.7
Asset Impairment |
Restructuring Cost and Reserve [Line Items] |
Restructuring and related cost, cumulative cost | 5.2
Asset Impairment | GCA Restructuring Program |
Restructuring Cost and Reserve [Line Items] |
Restructuring and related cost, cumulative cost | 0.0
Asset Impairment | 2020 Vision Restructuring Program |
Restructuring Cost and Reserve [Line Items] |
Restructuring and related cost, cumulative cost | $ 5.2

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