Annual Fund Operating Expenses - Nomura Diversified Income Fund - Nomura Diversified Income Fund	Oct. 31, 2025
Prospectus [Line Items]
Fee Waiver or Reimbursement over Assets, Date of Termination	February 26, 2027
A
Prospectus [Line Items]
Management Fees (as a percentage of Assets)	0.48%
Distribution and Service (12b-1) Fees	0.25%
Other Expenses (as a percentage of Assets):	0.16%
Expenses (as a percentage of Assets)	0.89%
Fee Waiver or Reimbursement	(0.22%)	[1]
Net Expenses (as a percentage of Assets)	0.67%
C
Prospectus [Line Items]
Management Fees (as a percentage of Assets)	0.48%
Distribution and Service (12b-1) Fees	1.00%
Other Expenses (as a percentage of Assets):	0.16%
Expenses (as a percentage of Assets)	1.64%
Fee Waiver or Reimbursement	(0.22%)	[1]
Net Expenses (as a percentage of Assets)	1.42%
R
Prospectus [Line Items]
Management Fees (as a percentage of Assets)	0.48%
Distribution and Service (12b-1) Fees	0.50%
Other Expenses (as a percentage of Assets):	0.16%
Expenses (as a percentage of Assets)	1.14%
Fee Waiver or Reimbursement	(0.22%)	[1]
Net Expenses (as a percentage of Assets)	0.92%
Institutional
Prospectus [Line Items]
Management Fees (as a percentage of Assets)	0.48%
Distribution and Service (12b-1) Fees	0.00%
Other Expenses (as a percentage of Assets):	0.16%
Expenses (as a percentage of Assets)	0.64%
Fee Waiver or Reimbursement	(0.22%)	[1]
Net Expenses (as a percentage of Assets)	0.42%
R6
Prospectus [Line Items]
Management Fees (as a percentage of Assets)	0.48%
Distribution and Service (12b-1) Fees	0.00%
Other Expenses (as a percentage of Assets):	0.06%	[1]
Expenses (as a percentage of Assets)	0.54%
Fee Waiver or Reimbursement	(0.22%)	[1]
Net Expenses (as a percentage of Assets)	0.32%

[1] 3 The Fund’s investment manager, Delaware Management Company (Manager), has contractually agreed to waive all or a portion of its investment advisory fees and/or pay/reimburse expenses (excluding any 12b-1 fees, acquired fund fees and expenses, taxes, interest, short sale dividend and interest expenses, brokerage fees, certain insurance costs, and nonroutine expenses or costs, including, but not limited to, those relating to reorganizations, litigation, conducting shareholder meetings, and liquidations) in order to prevent total annual fund operating expenses from exceeding 0.42% of the Fund’s average daily net assets for all share classes other than Class R6, and 0.32% of the Fund’s Class R6 shares’ average daily net assets, from February 27, 2026 through February 26, 2027. These waivers and reimbursements may only be terminated by agreement of the Manager and the Fund.