Shareholder Fees	Apr. 30, 2025 USD ($)
GABELLI GLOBAL CONTENT & CONNECTIVITY FUND \| GABELLI GLOBAL CONTENT & CONNECTIVITY FUND CLASS AAA
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage)	0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage)	0.00%
Redemption Fee (as a percentage of Amount Redeemed)	(2.00%)
Exchange Fee	$ 0
GABELLI GLOBAL CONTENT & CONNECTIVITY FUND \| GABELLI GLOBAL CONTENT & CONNECTIVITY FUND CLASS A
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	5.75%
Maximum Deferred Sales Charge (as a percentage)	0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage)	0.00%
Redemption Fee (as a percentage of Amount Redeemed)	(2.00%)
Exchange Fee	$ 0
GABELLI GLOBAL CONTENT & CONNECTIVITY FUND \| GABELLI GLOBAL CONTENT & CONNECTIVITY FUND CLASS I
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage)	0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage)	0.00%
Redemption Fee (as a percentage of Amount Redeemed)	(2.00%)
Exchange Fee	$ 0
The Gabelli Global Growth Fund \| The Gabelli Global Growth Fund CLASS AAA
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage)	0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage)	0.00%
Redemption Fee (as a percentage of Amount Redeemed)	(2.00%)
Exchange Fee	$ 0
The Gabelli Global Growth Fund \| The Gabelli Global Growth Fund CLASS A
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	5.75%
Maximum Deferred Sales Charge (as a percentage)	0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage)	0.00%
Redemption Fee (as a percentage of Amount Redeemed)	(2.00%)
Exchange Fee	$ 0
The Gabelli Global Growth Fund \| The Gabelli Global Growth Fund CLASS I
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage)	0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage)	0.00%
Redemption Fee (as a percentage of Amount Redeemed)	(2.00%)
Exchange Fee	$ 0
GABELLI INTERNATIONAL SMALL CAP FUND \| GABELLI INTERNATIONAL SMALL CAP FUND CLASS AAA
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage)	0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage)	0.00%
Redemption Fee (as a percentage of Amount Redeemed)	(2.00%)
Exchange Fee	$ 0
GABELLI INTERNATIONAL SMALL CAP FUND \| GABELLI INTERNATIONAL SMALL CAP FUND CLASS A
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	5.75%
Maximum Deferred Sales Charge (as a percentage)	0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage)	0.00%
Redemption Fee (as a percentage of Amount Redeemed)	(2.00%)
Exchange Fee	$ 0
GABELLI INTERNATIONAL SMALL CAP FUND \| GABELLI INTERNATIONAL SMALL CAP FUND CLASS I
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage)	0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage)	0.00%
Redemption Fee (as a percentage of Amount Redeemed)	(2.00%)
Exchange Fee	$ 0
The Gabelli Global Rising Income and Dividend Fund \| The Gabelli Global Rising Income and Dividend Fund CLASS AAA
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage)	0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage)	0.00%
Redemption Fee (as a percentage of Amount Redeemed)	(2.00%)
Exchange Fee	$ 0
The Gabelli Global Rising Income and Dividend Fund \| The Gabelli Global Rising Income and Dividend Fund CLASS A
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	5.75%
Maximum Deferred Sales Charge (as a percentage)	0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage)	0.00%
Redemption Fee (as a percentage of Amount Redeemed)	(2.00%)
Exchange Fee	$ 0
The Gabelli Global Rising Income and Dividend Fund \| The Gabelli Global Rising Income and Dividend Fund CLASS I
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage)	0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage)	0.00%
Redemption Fee (as a percentage of Amount Redeemed)	(2.00%)
Exchange Fee	$ 0
Gabelli Global Mini Mites Fund \| Gabelli Global Mini Mites Fund CLASS AAA
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage)	0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage)	0.00%
Redemption Fee (as a percentage of Amount Redeemed)	(2.00%)
Exchange Fee	$ 0
Gabelli Global Mini Mites Fund \| Gabelli Global Mini Mites Fund CLASS A
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	5.75%
Maximum Deferred Sales Charge (as a percentage)	0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage)	0.00%
Redemption Fee (as a percentage of Amount Redeemed)	(2.00%)
Exchange Fee	$ 0
Gabelli Global Mini Mites Fund \| Gabelli Global Mini Mites Fund CLASS I
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage)	0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage)	0.00%
Redemption Fee (as a percentage of Amount Redeemed)	(2.00%)
Exchange Fee	$ 0

Shareholder Fees

Apr. 30, 2025

USD ($)

GABELLI GLOBAL CONTENT & CONNECTIVITY FUND | GABELLI GLOBAL CONTENT & CONNECTIVITY FUND CLASS AAA

Prospectus [Line Items]

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

0.00%

Maximum Deferred Sales Charge (as a percentage)

0.00%

Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage)

0.00%

Redemption Fee (as a percentage of Amount Redeemed)