Fair Value Measurements - Changes in Fair Value for All Liabilities Using Material Level of Unobservable (Level 3) Inputs (Details) - Level 3 - Deconsolidated - Revolving Credit Facility - White Eagle $ in Thousands	6 Months Ended
	May 31, 2019 USD ($)
Fair Value, Liabilities, Unobservable Input Reconciliation [Roll Forward]
Beginning balance	$ 346,670
Draws under the White Eagle Revolving Credit Facility	4,221
Payments on White Eagle Revolving Credit Facility	0
Unrealized change in fair value	43,679
Ending balance	394,570
Changes in fair value included in earnings for period relating to liabilities held at the end of the period	$ 43,679