Income Taxes (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Nov. 30, 2019	Nov. 30, 2018	Nov. 30, 2017	Nov. 30, 2016
Income Tax Disclosure [Abstract]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%	22.20%	35.00%
U.S. Tax Act tax rate	21.00%
Current, Federal	$ 52.3	$ 92.9	$ 67.1
Non-U.S. subsidiaries tax loss carryforwards	183.3
Tax loss carryforwards expiring through 2019	2.4
Tax loss carryforwards expiring from 2020 through 2021	6.1
Tax Loss Carryforwards expiring from 2022 Through 2035	59.3
Tax loss carryforwards indefinitely	115.5
Deferred Tax Assets, Capital Loss Carryforwards	26.0
Tax credit carryforwards	46.8	57.2
Net increase in the valuation allowance	0.5
Unrecognized tax benefits	32.0	27.9	39.1	$ 58.3
Statute expirations	2.5	9.1	2.1
Interest and penalty (income) / expense	2.1	0.1	0.4
Interest and penalties accrued	7.1	5.1
Tax benefits that would impact effective tax rate	32.0
Deferred, Federal	(26.4)	340.3	$ (23.8)
Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability	$ 380.0
Effective Income Tax Rate Reconciliation, Repatriation of Foreign Earnings, Percent	15.50%
U.S. Tax Act, Incomplete Accounting, Transition Tax	$ 76.0	75.3
U.S. Tax Act, Incomplete Accounting, Withholding Tax on Repatriation Earnings	7.9
U.S. Tax Act, Incomplete Accounting, Changes in Transition Tax	4.7
U.S. Tax Act, Incomplete Accounting, Repatriation and Withholding Tax Impact		78.5
Increase In Current Federal Tax Expense (Benefit)		8.3
Current Federal Tax Expense (Benefit), Excluding U.S. Tax Act Impacts		44.0
Tax Cuts and Jobs Act, Income Tax Expense (Benefit)		48.9
Effective Income Tax Rate Reconciliation, Tax Credit, Foreign, Amount		21.1
Effective Income Tax Rate Reconciliation, Tax Credit, Other, Amount	7.7
U.S. Tax Act, Incomplete Accounting, Transition Tax, remitted over 8 years	47.2
U.S. Tax Act, Incomplete Accounting, Remaining Unpaid Transition Tax	$ 43.4
Decrease In Deferred Federal Income Tax Expense (Benefit)		2.6
Deferred Federal Income Tax Expense (Benefit), Excluding U.S. Tax Act Impacts		29.0
Tax Cuts and Jobs Act, Deferred Federal Income Tax Expense (Benefit)		$ 369.3