Cash, Cash Equivalents and Short-Term Investments (Details 2) $ in Thousands	Sep. 01, 2017 USD ($)
Amortized cost of short-term fixed Income Securities [Abstract]
Due within one year, Amortized Cost	$ 1,079,772
Due between one and two years, Amortized Cost	1,353,653
Due between two and three years, Amortized Cost	776,048
Due after three years, Amortized Cost	380,160
Total, Amortized Cost	3,589,633
Estimated Fair Value of Short-term fixed Income Securities [Abstract]
Due within one year, Estimated Fair value	1,079,092
Due between one and two years, Estimated Fair value	1,353,378
Due between two and three years, Estimated Fair value	778,726
Due after three years, Estimated Fair value	382,740
Total, Estimated Fair value	$ 3,593,936