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Cash, Cash Equivalents and Short-Term Investments (Details 2)
$ in Thousands
Mar. 02, 2018
USD ($)
Amortized cost of short-term fixed Income Securities  
Due within one year, Amortized Cost $ 1,210,398
Due between one and two years, Amortized Cost 1,099,330
Due between two and three years, Amortized Cost 856,020
Due after three years, Amortized Cost 349,784
Total, Amortized Cost 3,515,532
Estimated Fair Value of Short-term fixed Income Securities  
Due within one year, Estimated Fair value 1,205,298
Due between one and two years, Estimated Fair value 1,088,663
Due between two and three years, Estimated Fair value 844,181
Due after three years, Estimated Fair value 342,847
Total, Estimated Fair value $ 3,480,989