FINANCIAL INSTRUMENTS - Schedule of Cash, Cash Equivalents, Investments and Restricted Cash and Investments Unrealized Loss Positions (Details) $ in Thousands	Mar. 29, 2020 USD ($)
Fair Value
Unrealized Losses Less than 12 Months	$ 686,581
Unrealized Losses 12 Months or Greater	8,108
Total	694,689
Gross Unrealized Loss
Unrealized Losses Less than 12 Months	(6,520)
Unrealized Losses 12 Months or Greater	(298)
Total	(6,818)
Mutual funds
Fair Value
Unrealized losses less than 12 months, trading	6,363
Unrealized losses 12 months or greater, trading	8,108
Total, trading	14,471
Gross Unrealized Loss
Unrealized losses less than 12 months, trading	(193)
Unrealized losses 12 months or greater, trading	(298)
Total, trading	(491)
Foreign government bonds
Fair Value
Unrealized losses less than 12 months, available for sale	3,900
Unrealized losses 12 months or greater, available for sale	0
Total, available for sale	3,900
Gross Unrealized Loss
Unrealized losses less than 12 months, available for sale	(47)
Unrealized losses 12 months or greater, available for sale	0
Total, available for sale	(47)
Corporate notes and bonds
Fair Value
Unrealized losses less than 12 months, available for sale	676,318
Unrealized losses 12 months or greater, available for sale	0
Total, available for sale	676,318
Gross Unrealized Loss
Unrealized losses less than 12 months, available for sale	(6,280)
Unrealized losses 12 months or greater, available for sale	0
Total, available for sale	$ (6,280)