Annual Fund Operating Expenses (American Bond Trust)	12 Months Ended
	May 01, 2011
Series I, American Bond Trust
Operating Expenses:
Share Class	Series I	[1]
Management fee	0.37%
Distribution and service (12b-1) fees	0.60%
Other Expenses	0.03%
Total fund operating expenses	1.00%
Series II, American Bond Trust
Operating Expenses:
Share Class	Series II	[1]
Management fee	0.37%
Distribution and service (12b-1) fees	0.75%
Other Expenses	0.03%
Total fund operating expenses	1.15%
Series III, American Bond Trust
Operating Expenses:
Share Class	Series III	[1]
Management fee	0.37%
Distribution and service (12b-1) fees	0.25%
Other Expenses	0.03%
Total fund operating expenses	0.65%

[1] The table reflects the combined fees of the feeder fund and the master fund.