S000005599 [Member] Fees and Expenses - Wilmington New York Municipal Bond Fund	Apr. 30, 2026 USD ($)
Prospectus [Line Items]
Expense Heading [Optional Text]	Fees and Expenses
Expense Narrative [Text Block]	This table describes the fees and expenses that you may pay if you buy and hold the Fund’s Class A Shares and Class I Shares. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $100,000 in the Wilmington Funds. More information about these and other discounts is available from your financial professional and in the Fund’s prospectus in the section entitled “How are shares priced?” on page 76 of this prospectus.
Expense Breakpoint Discounts [Text]	You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $100,000 in the Wilmington Funds.
Expense Breakpoint, Minimum Investment Required [Amount]	$ 100,000
Shareholder Fees Caption [Optional Text]	Shareholder Fees (Fees paid directly from your investment)
Operating Expenses Caption [Optional Text]	Annual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)
Expense Example [Heading]	Example
Expense Example Narrative [Text Block]	This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund’s Class A Shares, and Class I Shares for the time periods indicated and then redeem all of your Shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same and that the fee waivers/expense reimbursements remain in place for the contractual period. Although your actual costs and returns may be higher or lower, based on these assumptions your costs would be:
Portfolio Turnover [Heading]	Portfolio Turnover
Portfolio Turnover [Text Block]	The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 8% of the average value of its portfolio.
Portfolio Turnover, Rate	8.00%

S000005599 [Member] Fees and Expenses - Wilmington New York Municipal Bond Fund

Apr. 30, 2026

USD ($)

Fees and Expenses

This table describes the fees and expenses that you may pay if you buy and hold the Fund’s Class A Shares and Class I Shares. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $100,000 in the Wilmington Funds. More information about these and other discounts is available from your financial professional and in the Fund’s prospectus in the section entitled “How are shares priced?” on page 76 of this prospectus.

Expense Breakpoint Discounts [Text]

You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $100,000 in the Wilmington Funds.

Expense Breakpoint, Minimum Investment Required [Amount]

$ 100,000

Shareholder Fees Caption [Optional Text]

Shareholder Fees (Fees paid directly from your investment)

Operating Expenses Caption [Optional Text]

Annual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)

Expense Example [Heading]

Example

Expense Example Narrative [Text Block]

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.

The Example assumes that you invest $10,000 in the Fund’s Class A Shares, and Class I Shares for the time periods indicated and then redeem all of your Shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same and that the fee waivers/expense reimbursements remain in place for the contractual period. Although your actual costs and returns may be higher or lower, based on these assumptions your costs would be:

Portfolio Turnover [Heading]

Portfolio Turnover

Portfolio Turnover [Text Block]

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 8% of the average value of its portfolio.

Portfolio Turnover, Rate

8.00%