Shareholder Fees (dei_DocumentInformationDocumentAxis, (Delaware Limited-Term Diversified Income Fund))	0 Months Ended
	Apr. 30, 2013
Class A
Shareholder Fees:
Maximum sales charge (load) imposed on purchases as a percentage of offering price	2.75%
Maximum contingent deferred sales charge (load) as a percentage of original purchase price or redemption price, whichever is lower	none
Class B
Shareholder Fees:
Maximum sales charge (load) imposed on purchases as a percentage of offering price	none
Maximum contingent deferred sales charge (load) as a percentage of original purchase price or redemption price, whichever is lower	2.00%	[1]
Class C
Shareholder Fees:
Maximum sales charge (load) imposed on purchases as a percentage of offering price	none
Maximum contingent deferred sales charge (load) as a percentage of original purchase price or redemption price, whichever is lower	1.00%	[1]
Institutional Class
Shareholder Fees:
Maximum sales charge (load) imposed on purchases as a percentage of offering price	none
Maximum contingent deferred sales charge (load) as a percentage of original purchase price or redemption price, whichever is lower	none
Class R
Shareholder Fees:
Maximum sales charge (load) imposed on purchases as a percentage of offering price	none
Maximum contingent deferred sales charge (load) as a percentage of original purchase price or redemption price, whichever is lower	none

[1] If you redeem Class B shares during the first year after you buy them, you will pay a contingent deferred sales charge (CDSC) of 2.00%, which declines to 1.00% during the second and third years, and 0% thereafter. Class C shares redeemed within one year of purchase are subject to a 1.00% CDSC.