Restructuring and Other Charges - Fiscal 2020 Plan (Details) - Fiscal 2020 Plan employee in Thousands, $ in Billions	Sep. 30, 2019 USD ($) employee
Restructuring Cost and Reserve [Line Items]
Estimated pre-tax charges | $	$ 1.0
Minimum
Restructuring Cost and Reserve [Line Items]
Expected positions to be eliminated | employee	7
Maximum
Restructuring Cost and Reserve [Line Items]
Expected positions to be eliminated | employee	9
Severance and EER
Restructuring Cost and Reserve [Line Items]
Estimated pre-tax charges | $	$ 0.9