Income Taxes - Provision (Benefit) for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2018	Oct. 31, 2017	Oct. 31, 2016
Current:
Federal	$ 8,327	$ 0	$ 0
State	8,219	6,342	5,281
Foreign	13,294	14,563	9,969
Total current	29,840	20,905	15,250
Deferred:
Federal	475,951	(1,047,699)	0
State	(8,202)	(77,429)	0
Foreign	(4,118)	(1,604)	(1,116)
Total deferred	463,631	(1,126,732)	(1,116)
Provision (benefit) for income taxes	$ 493,471	$ (1,105,827)	$ 14,134