Cash, Cash Equivalents, and Investments - Effective Maturity Dates of Available-for-Sale Investments (Detail) $ in Thousands	Oct. 02, 2016 USD ($)
Schedule of Available-for-sale Securities [Line Items]
1 year or less	$ 328,378
1-2 years	198,447
2-3 years	100,900
3-4 years	11,901
4-5 years	4,679
Fair value	644,305
Corporate Bonds
Schedule of Available-for-sale Securities [Line Items]
1 year or less	134,245
1-2 years	71,977
2-3 years	84,825
3-4 years	2,212
4-5 years	4,520
Fair value	297,779
Asset-Backed Securities
Schedule of Available-for-sale Securities [Line Items]
1 year or less	64,740
1-2 years	20,212
2-3 years	8,722
3-4 years	9,689
4-5 years	159
Fair value	103,522
Treasury Bills
Schedule of Available-for-sale Securities [Line Items]
1 year or less	36,728
1-2 years	70,579
2-3 years	0
3-4 years	0
4-5 years	0
Fair value	107,307
Sovereign Bonds
Schedule of Available-for-sale Securities [Line Items]
1 year or less	28,720
1-2 years	19,749
2-3 years	4,635
Fair value	53,104
Euro Liquidity Fund
Schedule of Available-for-sale Securities [Line Items]
1 year or less	49,586
1-2 years	0
2-3 years	0
3-4 years	0
4-5 years	0
Fair value	49,586
Agency Bonds
Schedule of Available-for-sale Securities [Line Items]
1 year or less	4,904
1-2 years	15,930
2-3 years	2,718
3-4 years	0
4-5 years	0
Fair value	23,552
Municipal Bonds
Schedule of Available-for-sale Securities [Line Items]
1 year or less	9,455
1-2 years	0
2-3 years	0
3-4 years	0
4-5 years	0
Fair value	$ 9,455