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Expense Example (Value & Restructuring Trust, USD $)
12 Months Ended
May 01, 2011
Series I, Value & Restructuring Trust
 
Expense Example:  
Year 1 $ 98
Year 3 306
Year 5 531
Year 10 1,178
Series II, Value & Restructuring Trust
 
Expense Example:  
Year 1 118
Year 3 368
Year 5 638
Year 10 1,409
Series NAV, Value & Restructuring Trust
 
Expense Example:  
Year 1 93
Year 3 290
Year 5 504
Year 10 $ 1,120