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Expense Example (High Income Trust, USD $)
12 Months Ended
May 01, 2011
Series I, High Income Trust
 
Expense Example:  
Year 1 $ 82
Year 3 255
Year 5 444
Year 10 990
Series II, High Income Trust
 
Expense Example:  
Year 1 102
Year 3 318
Year 5 552
Year 10 1,225
Series NAV, High Income Trust
 
Expense Example:  
Year 1 77
Year 3 240
Year 5 417
Year 10 $ 930