XML 73 R209.htm IDEA: XBRL DOCUMENT  v2.3.0.11
Expense Example (Utilities Trust, USD $)
12 Months Ended
May 01, 2011
Series I, Utilities Trust
 
Expense Example:  
Year 1 $ 97
Year 3 303
Year 5 525
Year 10 1,166
Series II, Utilities Trust
 
Expense Example:  
Year 1 117
Year 3 365
Year 5 633
Year 10 1,398
Series NAV, Utilities Trust
 
Expense Example:  
Year 1 92
Year 3 287
Year 5 498
Year 10 $ 1,108