Annual Total Returns (Bar Chart) (Invesco Van Kampen U.S. Mortgage Fund, Institutional Class, Invesco Van Kampen U.S. Mortgage Fund)	12 Months Ended
	May 02, 2011
Invesco Van Kampen U.S. Mortgage Fund | Institutional Class, Invesco Van Kampen U.S. Mortgage Fund
Annual Total Returns
'01	8.17%
'02	7.61%
'03	1.87%
'04	3.88%
'05	2.40%
'06	3.79%
'07	6.11%
'08	(1.94%)
'09	7.19%
'10	5.41%