Label

Element

Value

Prospectus:

rr_ProspectusTable

Supplement Text Block

abfunds-20190618_SupplementTextBlock

Supplement dated June 18, 2019 to the following prospectuses and summary prospectuses, each as previously amended or supplemented:

American Beacon ARK Transformational Innovation Fund

Prospectus and Summary Prospectus dated January 1, 2019

American Beacon Tocqueville International Value Fund

Prospectus and Summary Prospectus dated January 18, 2019

American Beacon Balanced Fund

American Beacon Garcia Hamilton Quality Bond Fund

American Beacon International Equity Fund

American Beacon Large Cap Value Fund

American Beacon Mid-Cap Value Fund

American Beacon Small Cap Value Fund

Prospectus and Summary Prospectuses dated February 28, 2019

Effective immediately, the first paragraph in the "Fees and Expenses of the Fund" section of each Summary Prospectus and the "Fund Summary – Fees and Expenses of the Fund" section of each Prospectus for each Fund is amended by inserting the following sentence at the end of the paragraph:

"Although the Fund does not impose any sales charge on Y Class shares, you may pay a commission to your broker on your purchases and sales of those shares, which is not reflected in the tables or Example below."

(American Beacon Funds - Supplement) | (American Beacon ARK Transformational Innovation Fund)

Prospectus:

rr_ProspectusTable

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

Although the Fund does not impose any sales charge on Y Class shares, you may pay a commission to your broker on your purchases and sales of those shares, which is not reflected in the tables or Example below.

(American Beacon Funds - Supplement) | (American Beacon Tocqueville International Value Fund)

Prospectus:

rr_ProspectusTable

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

Although the Fund does not impose any sales charge on Y Class shares, you may pay a commission to your broker on your purchases and sales of those shares, which is not reflected in the tables or Example below.

(American Beacon Funds - Supplement) | (American Beacon Balanced Fund)

Prospectus:

rr_ProspectusTable

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

Although the Fund does not impose any sales charge on Y Class shares, you may pay a commission to your broker on your purchases and sales of those shares, which is not reflected in the tables or Example below.

(American Beacon Funds - Supplement) | (American Beacon Garcia Hamilton Quality Bond Fund)

Prospectus:

rr_ProspectusTable

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

Although the Fund does not impose any sales charge on Y Class shares, you may pay a commission to your broker on your purchases and sales of those shares, which is not reflected in the tables or Example below.

(American Beacon Funds - Supplement) | (American Beacon International Equity Fund)

Prospectus:

rr_ProspectusTable

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

Although the Fund does not impose any sales charge on Y Class shares, you may pay a commission to your broker on your purchases and sales of those shares, which is not reflected in the tables or Example below.

(American Beacon Funds - Supplement) | (American Beacon Large Cap Value Fund)

Prospectus:

rr_ProspectusTable

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

Although the Fund does not impose any sales charge on Y Class shares, you may pay a commission to your broker on your purchases and sales of those shares, which is not reflected in the tables or Example below.

(American Beacon Funds - Supplement) | (American Beacon Mid-Cap Value Fund)

Prospectus:

rr_ProspectusTable

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

Although the Fund does not impose any sales charge on Y Class shares, you may pay a commission to your broker on your purchases and sales of those shares, which is not reflected in the tables or Example below.

(American Beacon Funds - Supplement) | (American Beacon Small Cap Value Fund)

Prospectus:

rr_ProspectusTable

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

Although the Fund does not impose any sales charge on Y Class shares, you may pay a commission to your broker on your purchases and sales of those shares, which is not reflected in the tables or Example below.