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Expense Example (Money Market Trust, USD $)
12 Months Ended
May 01, 2011
Series I, Money Market Trust
 
Expense Example:  
Year 1 $ 56
Year 3 176
Year 5 307
Year 10 689
Series II, Money Market Trust
 
Expense Example:  
Year 1 77
Year 3 240
Year 5 417
Year 10 $ 930