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Expense Example (U.S. Multi Sector Trust, USD $)
12 Months Ended
May 01, 2011
Series I, U.S. Multi Sector Trust
 
Expense Example:  
Year 1 $ 86
Year 3 268
Year 5 466
Year 10 1,037
Series II, U.S. Multi Sector Trust
 
Expense Example:  
Year 1 106
Year 3 331
Year 5 574
Year 10 1,271
Series NAV, U.S. Multi Sector Trust
 
Expense Example:  
Year 1 81
Year 3 252
Year 5 439
Year 10 $ 978