Valuation And Qualifying Accounts (Details) - USD ($) $ in Millions	12 Months Ended
	Nov. 30, 2018	Nov. 30, 2017	Nov. 30, 2016
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	$ 32.6	$ 14.7	$ 22.6
Charged to Costs and Expenses	12.2	17.7	4.2
Charged to Other Accounts	(2.8)	2.1	0.0
Deductions	(2.7)	(1.9)	(12.1)
Balance at End of Period	39.3	32.6	14.7
Allowance For Doubtful Receivables [Member]
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	6.6	4.2	8.0
Charged to Costs and Expenses	1.1	2.6	0.7
Charged to Other Accounts	(0.6)	0.3	0.0
Deductions	(0.7)	(0.5)	(4.5)
Balance at End of Period	6.4	6.6	4.2
Valuation Allowance On Net Deferred Tax Assets [Member]
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	26.0	10.5	14.6
Charged to Costs and Expenses	11.1	15.1	3.5
Charged to Other Accounts	(2.2)	1.8	0.0
Deductions	(2.0)	(1.4)	(7.6)
Balance at End of Period	$ 32.9	$ 26.0	$ 10.5