Cash, Cash Equivalents and Short-Term Investments (Details 2) (USD $) In Thousands, unless otherwise specified	Jun. 01, 2012
Amortized cost and Estimated Fair Value of Short-term fixed Income Securities [Abstract]
Due within one year, Amortized Cost	$ 945,166
Due between one and two years, Amortized Cost	499,841
Due between two and three years, Amortized Cost	447,771
Due after three years, Amortized Cost	143,077
Total, Amortized Cost	2,035,855
Due within one year, Estimated Fair value	946,441
Due between one and two years, Estimated Fair value	504,375
Due between two and three years, Estimated Fair value	450,389
Due after three years, Estimated Fair value	145,422
Total, Estimated Fair value	$ 2,046,627