Postretirement and Other Employee Benefits (Additional Information) (Details) - Foreign Plan $ in Millions	6 Months Ended
	Feb. 29, 2020 USD ($)
Pension and Other Postretirement Benefits Disclosure [Line Items]
Service period	8 years
Switzerland Plan
Pension and Other Postretirement Benefits Disclosure [Line Items]
Service period	8 years
Switzerland Plan | Minimum
Pension and Other Postretirement Benefits Disclosure [Line Items]
Expected cash contributions	$ 9.5
Switzerland Plan | Maximum
Pension and Other Postretirement Benefits Disclosure [Line Items]
Expected cash contributions	$ 11.7