Pension and Employee Benefits Plans - Summary of Employee Defined Benefit Plans and Other Post-Retirement Benefits (Details) - Convergys - USD ($) $ in Thousands	12 Months Ended
Nov. 30, 2019	Nov. 30, 2018
Change in Plan Assets:
Fair value of plan assets at beginning of year	$ 164,693
Fair value of plan assets at end of year	151,862	$ 164,693
Defined benefit plans
Change in Benefit Obligation:
Benefit obligation at beginning of year	247,697	19,413
Service cost	6,439	2,724
Interest cost	10,291	746
Actuarial (gain) loss	32,584	1,166
Benefits paid	(16,274)	(2,838)
Settlements	(13,140)	(208)
Acquisition		227,073
Foreign currency adjustments	940	(381)
Projected obligation at end of year	268,537	247,697
Change in Plan Assets:
Fair value of plan assets at beginning of year	164,693	10,719
Actual return on assets	5,438	157
Settlement	(13,140)
Acquisition		157,505
Employer contributions	1,872	1,405
Employee contributions	723
Benefit paid	(7,728)	(1,079)
Foreign currency adjustments	4	(4,015)
Fair value of plan assets at end of year	151,862	164,693
Funded Status of Plans:
Unfunded status	$ 116,675	$ 83,004

Amount of increase (decrease) in plan assets of defined benefit plan from actual return (loss) determined by change in fair value of plan assets adjusted for contributions, benefit payments, and other expenses.

Name:	us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of gain (loss) from change in actuarial assumptions which (increases) decreases benefit obligation of defined benefit plan. Assumptions include, but are not limited to, interest, mortality, employee turnover, salary, and temporary deviation from substantive plan.