Employee Benefit Plans Employee Benefit Plan (Schedule of the Plan's Investments with a Reported NAV - Pension) (Details) - USD ($) $ in Millions		12 Months Ended
		Nov. 30, 2016	Nov. 30, 2015	Nov. 30, 2014
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		$ 136.3	$ 141.0
Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		0.3	1.5
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		197.1	197.1	$ 221.8
Pension Plan [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets		$ 0.3	1.5	$ 4.5
Pension Plan [Member] | Collateralized Loan Obligations [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Required Redemption Notification Period		90 days
Defined Benefit Plans, Non-Redemption Period		2 years
Collective Trust Funds [Member] | Pension Plan [Member] | Collateralized Loan Obligations [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	[1]	$ 26.9	22.2
Energy Debt Collective Investment [Member] | Pension Plan [Member] | Energy Debt Collective Investment [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	[1]	11.4	9.7
6798 Real Estate Investment Trusts [Member] | Pension Plan [Member] | Real Estate Investment [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	[1]	$ 21.8	$ 23.1

[1] The SEI Structured Credit Collective Fund seeks to provide high general returns by investing in collateralized debt obligations (“CDO’s”) and other structured credit instruments. The SEI Structured Credit Collective Fund requires a two-year non-redemption period after which investments can be redeemed at any time; however, a 90 day redemption notification period is required. The Plan has satisfied all funding obligations related to this investment and has surpassed the two-year non-redemption period.