Income Taxes (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Nov. 30, 2018	Nov. 30, 2017	Nov. 30, 2016	Nov. 30, 2015
Income Tax Disclosure [Abstract]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	22.20%	35.00%	35.00%
U.S. Tax Act tax rate	21.00%
Current, Federal	$ 92.9	$ 67.1	$ 127.7
Non-U.S. subsidiaries tax loss carryforwards	195.9
Tax loss carryforwards expiring through 2019	2.5
Tax loss carryforwards expiring from 2020 through 2021	6.4
Tax Loss Carryforwards expiring from 2022 Through 2035	54.1
Tax loss carryforwards indefinitely	132.9
Deferred Tax Assets, Capital Loss Carryforwards	28.2
Tax credit carryforwards	57.2	50.2
Net increase in the valuation allowance	6.9
Unrecognized tax benefits	27.9	39.1	58.3	$ 56.5
Statute expirations	9.1	2.1	10.0
Interest and penalty (income) / expense	0.1	0.4	1.2
Interest and penalties accrued	5.1	5.3
Tax benefits that would impact effective tax rate	27.5
Deferred, Federal	340.3	$ (23.8)	$ 29.6
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	$ 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
Effective Income Tax Rate Reconciliation, Tax Credit, Foreign, Amount	12.0
U.S. Tax Act, Incomplete Accounting, Transition Tax, remitted over 8 years	$ 49.1