Income Taxes (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended		6 Months Ended
	May 31, 2021	Apr. 30, 2021	Apr. 30, 2020	Apr. 30, 2021	Apr. 30, 2020
Income Tax Contingency [Line Items]
Income tax expense		$ 51	$ 7	$ 33	$ 2
Income tax expense adjusted amount		$ 19		$ 23
Sales of manufactured products, net | Subsequent Event
Income Tax Contingency [Line Items]
Income tax expense	$ (28)
Selling, General & Administrative expenses | Subsequent Event
Income Tax Contingency [Line Items]
Income tax expense	$ (2)