Income Taxes Tax Cuts and Jobs Act of 2017 (Details) $ in Millions	3 Months Ended
	Jan. 31, 2018 USD ($)
Income Tax Disclosure [Abstract]
Tax Cuts and Jobs Act of 2017 Estimated Net Tax Expense	$ 146.2
Tax Cuts and Jobs Act of 2017, Measurement Period Adjustment, Income Tax Expense (Benefit)	94.8
Tax Cuts and Jobs Act of 2017 Transition Tax	56.0
Tax Cuts and Jobs Act of 2017 Statutory Rate Change	$ 4.6