Pension and Employee Benefits Plans - Summary of Fair Value Hierarchy, Plans Assets Fair Value Determined to Level 2 (Details) - Convergys - USD ($) $ in Thousands	Nov. 30, 2019	Nov. 30, 2018
Defined Benefit Plan Disclosure [Line Items]
Total investments	$ 151,862	$ 164,693
Cash and Cash Equivalents | Level 2
Defined Benefit Plan Disclosure [Line Items]
Total investments	3,474	3,422
Fixed Income | Level 2
Defined Benefit Plan Disclosure [Line Items]
Total investments	61,005	64,938
U.S. Large Cap | Level 2
Defined Benefit Plan Disclosure [Line Items]
Total investments	48,293	52,853
U.S. Small Cap | Level 2
Defined Benefit Plan Disclosure [Line Items]
Total investments	9,025	9,754
International Equity | Level 2
Defined Benefit Plan Disclosure [Line Items]
Total investments	29,271	30,688
Investment Funds | Level 2
Defined Benefit Plan Disclosure [Line Items]
Total investments	374	2,010
Limited Partnership | Level 3
Defined Benefit Plan Disclosure [Line Items]
Total investments	$ 420	$ 1,028