Cash, Cash Equivalents and Short-Term Investments (Details 2) $ in Thousands	Aug. 30, 2019 USD ($)
Amortized cost of short-term fixed income securities
Due within one year, Amortized Cost	$ 790,327
Due between one and two years, Amortized Cost	474,157
Due between two and three years, Amortized Cost	138,478
Due after three years, Amortized Cost	34,772
Total, Amortized Cost	1,437,734
Estimated fair value of short-term fixed income securities
Due within one year, Estimated Fair value	790,849
Due between one and two years, Estimated Fair value	475,770
Due between two and three years, Estimated Fair value	139,776
Due after three years, Estimated Fair value	35,346
Total, Estimated Fair value	$ 1,441,741