Note 3. Balance Sheet Components (Detail) (USD $)
In Millions, unless otherwise specified
Sep. 30, 2012
Dec. 25, 2011
Cash, Cash Equivalents, and Short-term Investments $ 328.1 $ 262.7
United States of America [Member]
   
Cash, Cash Equivalents, and Short-term Investments 290.8 252.2
Outside The United States Of America [Member]
   
Cash, Cash Equivalents, and Short-term Investments $ 37.3 $ 10.5