Income Taxes - Provision (Benefit) for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2017
Current:
Federal	$ 13,143	$ 8,327	$ 0
State	16,945	8,219	6,342
Foreign	9,816	13,294	14,563
Total current	39,904	29,840	20,905
Deferred:
Federal	31,872	475,951	(1,047,699)
State	(9,159)	(8,202)	(77,429)
Foreign	(2,861)	(4,118)	(1,604)
Total deferred	19,852	463,631	(1,126,732)
Provision (benefit) for income taxes	$ 59,756	$ 493,471	$ (1,105,827)