Valuation And Qualifying Accounts (Details) - USD ($) $ in Millions	12 Months Ended
	Nov. 30, 2019	Nov. 30, 2018	Nov. 30, 2017
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	$ 39.3	$ 32.6	$ 14.7
Charged to Costs and Expenses	3.7	12.2	17.7
Charged to Other Accounts	(2.3)	(2.8)	2.1
Deductions	(2.7)	(2.7)	(1.9)
Balance at End of Period	38.0	39.3	32.6
Allowance For Doubtful Receivables [Member]
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	6.4	6.6	4.2
Charged to Costs and Expenses	1.1	1.1	2.6
Charged to Other Accounts	(1.8)	(0.6)	0.3
Deductions	(0.1)	(0.7)	(0.5)
Balance at End of Period	5.6	6.4	6.6
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	32.9	26.0	10.5
Charged to Costs and Expenses	2.6	11.1	15.1
Charged to Other Accounts	(0.5)	(2.2)	1.8
Deductions	(2.6)	(2.0)	(1.4)
Balance at End of Period	$ 32.4	$ 32.9	$ 26.0