Balance Sheet Details - Schedule of other long-term liabilities (Details) - USD ($) $ in Thousands	Oct. 03, 2020	Sep. 28, 2019
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Deferred compensation (see Note 12)	$ 42,854	$ 39,715
Defined benefit plan liabilities (see Note 17)	45,810	45,862
Other long-term liabilities	221,074	165,881
Other long-term liabilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term taxes payable	15,374	37,385
Operating lease liability, long-term (see Note 11)	75,264	0
Finance lease liability, long-term (see Note 11)	178	0
Deferred compensation (see Note 12)	42,854	39,715
Deferred revenue	15,721	27,785
Asset retirement obligations liability (see Note 2)	13,624	8,012
Asset retirement obligations liability (see Note 2)	5,892	4,934
Defined benefit plan liabilities (see Note 17)	45,810	45,862
Other long-term liabilities	$ 6,357	$ 2,188