Shareholder Fees	Oct. 31, 2024
First Eagle Global Fund | First Eagle Global Fund | Class A
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	5.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	1.00%	[1]
First Eagle Global Fund | First Eagle Global Fund | Class C
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	1.00%
First Eagle Global Fund | First Eagle Global 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 of Offering Price)	0.00%
First Eagle Global Fund | First Eagle Global Fund | Class R6
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	0.00%
First Eagle Overseas Fund | First Eagle Overseas Fund | Class A
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	5.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	1.00%	[2]
First Eagle Overseas Fund | First Eagle Overseas Fund | Class C
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	1.00%
First Eagle Overseas Fund | First Eagle Overseas 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 of Offering Price)	0.00%
First Eagle Overseas Fund | First Eagle Overseas Fund | Class R6
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	0.00%
First Eagle U.S. Fund (formerly named First Eagle U.S. Value Fund) | First Eagle U.S. Value Fund | Class A
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	5.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	1.00%	[3]
First Eagle U.S. Fund (formerly named First Eagle U.S. Value Fund) | First Eagle U.S. Value Fund | Class C
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	1.00%
First Eagle U.S. Fund (formerly named First Eagle U.S. Value Fund) | First Eagle U.S. Value 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 of Offering Price)	0.00%
First Eagle U.S. Fund (formerly named First Eagle U.S. Value Fund) | First Eagle U.S. Value Fund | Class R6
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	0.00%
First Eagle Gold Fund | First Eagle Gold Fund | Class A
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	5.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	1.00%	[4]
First Eagle Gold Fund | First Eagle Gold Fund | Class C
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	1.00%
First Eagle Gold Fund | First Eagle Gold 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 of Offering Price)	0.00%
First Eagle Gold Fund | First Eagle Gold Fund | Class R6
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	0.00%
First Eagle Global Income Builder Fund | First Eagle Global Income Builder Fund | Class A
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	5.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	1.00%	[5]
First Eagle Global Income Builder Fund | First Eagle Global Income Builder Fund | Class C
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	1.00%
First Eagle Global Income Builder Fund | First Eagle Global Income Builder 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 of Offering Price)	0.00%
First Eagle Global Income Builder Fund | First Eagle Global Income Builder Fund | Class R6
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	0.00%
First Eagle Rising Dividend Fund | First Eagle Rising Dividend Fund | Class A
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	5.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	1.00%	[6]
First Eagle Rising Dividend Fund | First Eagle Rising Dividend Fund | Class C
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	1.00%
First Eagle Rising Dividend Fund | First Eagle Rising 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 of Offering Price)	0.00%
First Eagle Rising Dividend Fund | First Eagle Rising Dividend Fund | Class R6
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	0.00%
First Eagle Small Cap Opportunity Fund | First Eagle Small Cap Opportunity Fund | Class A
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	5.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	1.00%	[7]
First Eagle Small Cap Opportunity Fund | First Eagle Small Cap Opportunity Fund | Class C
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	1.00%	[7]
First Eagle Small Cap Opportunity Fund | First Eagle Small Cap Opportunity 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 of Offering Price)	0.00%
First Eagle Small Cap Opportunity Fund | First Eagle Small Cap Opportunity Fund | Class R6
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	0.00%
First Eagle U.S. Smid Cap Opportunity Fund | First Eagle U.S. Smid Cap Opportunity Fund | Class A
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	5.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	1.00%	[8]
First Eagle U.S. Smid Cap Opportunity Fund | First Eagle U.S. Smid Cap Opportunity 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 of Offering Price)	0.00%
First Eagle U.S. Smid Cap Opportunity Fund | First Eagle U.S. Smid Cap Opportunity Fund | Class R6
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	0.00%
First Eagle Global Real Assets Fund | First Eagle Global Real Assets Fund | Class A
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	5.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	1.00%	[9]
First Eagle Global Real Assets Fund | First Eagle Global Real Assets 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 of Offering Price)	0.00%
First Eagle Global Real Assets Fund | First Eagle Global Real Assets Fund | Class R6
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	0.00%
First Eagle High Yield Municipal Fund | First Eagle High Yield Municipal Fund | Class A
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	2.50%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	1.00%	[10]
First Eagle High Yield Municipal Fund | First Eagle High Yield Municipal Fund | Class C
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	1.00%
First Eagle High Yield Municipal Fund | First Eagle High Yield Municipal 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 of Offering Price)	0.00%
First Eagle High Yield Municipal Fund | First Eagle High Yield Municipal Fund | Class R6
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	0.00%
First Eagle Short Duration High Yield Municipal Fund | First Eagle Short Duration High Yield Municipal Fund | Class C
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	1.00%	[11]
First Eagle Short Duration High Yield Municipal Fund | First Eagle Short Duration High Yield Municipal Fund | Class A
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	2.50%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	1.00%	[11]
First Eagle Short Duration High Yield Municipal Fund | First Eagle Short Duration High Yield Municipal 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 of Offering Price)	0.00%
First Eagle Short Duration High Yield Municipal Fund | First Eagle Short Duration High Yield Municipal Fund | Class R6
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	0.00%

[1] A contingent deferred sales charge of 1.00% may apply on certain redemptions of Class A shares made within 18 months following a purchase of $1,000,000 or more without an initial sales charge.

[2] A contingent deferred sales charge of 1.00% may apply on certain redemptions of Class A shares made within 18 months following a purchase of $1,000,000 or more without an initial sales charge.

[3] A contingent deferred sales charge of 1.00% may apply on certain redemptions of Class A shares made within 18 months following a purchase of $1,000,000 or more without an initial sales charge.

[4] A contingent deferred sales charge of 1.00% may apply on certain redemptions of Class A shares made within 18 months following a purchase of $1,000,000 or more without an initial sales charge.

[5] A contingent deferred sales charge of 1.00% may apply on certain redemptions of Class A shares made within 18 months following a purchase of $250,000 or more without an initial sales charge.

[6] A contingent deferred sales charge of 1.00% may apply on certain redemptions of Class A shares made within 18 months following a purchase of $1,000,000 or more without an initial sales charge.

[7] A contingent deferred sales charge of 1.00% may apply on certain redemptions of Class A shares made within 18 months following a purchase of $1,000,000 or more without an initial sales charge.

[8] A contingent deferred sales charge of 1.00% may apply on certain redemptions of Class A shares made within 18 months following a purchase of $1,000,000 or more without an initial sales charge.

[9] A contingent deferred sales charge of 1.00% may apply on certain redemptions of Class A shares made within 18 months following a purchase of $1,000,000 or more without an initial sales charge.

[10] A contingent deferred sales charge of 1.00% may apply on certain redemptions of Class A shares made within 18 months following a purchase of $250,000 or more without an initial sales charge.

[11] A contingent deferred sales charge of 1.00% may apply on certain redemptions of Class A shares made within 18 months following a purchase of $250,000 or more without an initial sales charge.