CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Jul. 25, 2020	Apr. 25, 2020	Oct. 26, 2019	Jul. 27, 2019
Statement of Cash Flows [Abstract]
Net income (loss)	$ 24,202	$ (608,797)	$ (33,349)	$ 29,807
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation	10,562			11,335
Amortization	9,305			9,297
Investment gain	0			(34,334)
Non-cash employee compensation	9,583			10,234
Deferred consideration in securitized receivables	(139,466)			(105,697)
Change in assets and liabilities	(143,994)			34,134
Net cash used in operating activities	(229,808)			(45,224)
Investing activities:
Additions to property and equipment	(6,439)			(8,901)
Collection of deferred purchase price receivables	139,466			105,697
Other investing activities	396			0
Net cash provided by investing activities	133,423			96,796
Financing activities:
Dividends paid	0			(25,538)
Payments on long-term debt	0			(5,533)
Draw on revolving credit	136,000			0
Other financing activities	(722)			(5,085)
Net cash provided by (used in) financing activities	135,278			(36,156)
Effect of exchange rate changes on cash	2,724			(1,281)
Net change in cash and cash equivalents	41,617			14,135
Cash and cash equivalents at beginning of period	77,944		$ 109,781	95,646
Cash and cash equivalents at end of period	119,561	$ 77,944		109,781
Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract]
Noncash investments acquired	$ 201,861			$ 87,710