Cash, Cash Equivalents and Short-Term Investments (Details 2) $ in Thousands	Mar. 03, 2017 USD ($)
Amortized cost of short-term fixed Income Securities [Abstract]
Due within one year, Amortized Cost	$ 1,072,212
Due between one and two years, Amortized Cost	1,332,306
Due between two and three years, Amortized Cost	771,270
Due after three years, Amortized Cost	410,166
Total, Amortized Cost	3,585,954
Estimated Fair Value of Short-term fixed Income Securities [Abstract]
Due within one year, Estimated Fair value	1,072,109
Due between one and two years, Estimated Fair value	1,330,659
Due between two and three years, Estimated Fair value	767,999
Due after three years, Estimated Fair value	407,954
Total, Estimated Fair value	$ 3,578,721