Debt and Credit Lines Schedule of Long-Term Debt (Details) - USD ($) $ in Millions	May 31, 2019	Nov. 30, 2018
Debt Instrument [Line Items]
Capital lease obligations	$ 15.2	$ 15.6
Gross debt	330.3	329.7
Less: current portion	(4.3)	(4.2)
Unamortized original issue discount	(1.9)	(2.1)
Debt issuance costs	4.1	4.7
Total long-term debt, net of current portion	320.0	318.7
Term Loan B [Member]
Debt Instrument [Line Items]
$350 million Term Loan B, due 2023 (interest at 5.73% and 5.55%, respectively)	300.4	302.1
Senior Secured Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Long-term Line of Credit, Noncurrent	$ 14.7	$ 12.0

Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date.

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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