v3.26.1
Shareholder Report
 6 Months Ended
Jun. 30, 2026
USD ($)
Holding
Shareholder Report [Line Items]  
Document Type N-CSRS
Amendment Flag false
Registrant Name The Bond Fund of America
Entity Central Index Key 0000013075
Entity Investment Company Type N-1A
Document Period End Date Jun. 30, 2026
The Bond Fund of America® - Class A  
Shareholder Report [Line Items]  
Fund Name The Bond Fund of America®
Class Name Class A
Trading Symbol ABNDX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Bond Fund of America (the "fund") for the period from January 1, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at capitalgroup.com/mutual-fund-literature-A. You can also request this information by contacting us at (800) 421-4225.
Additional Information Phone Number (800) 421-4225
Additional Information Website capitalgroup.com/mutual-fund-literature-A
Expenses [Text Block]
What were the fund costs for the last six months?
(based on a hypothetical $10,000 investment)
Share class
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class A
$
29		0.59
%
*
*Annualized.
Expenses Paid, Amount $ 29
Expense Ratio, Percent 0.59% [1]
Net Assets $ 100,749,000,000
Holdings Count | Holding 5,793
Investment Company, Portfolio Turnover 97.00%
Additional Fund Statistics [Text Block]
Key fund statistics
Fund net assets (in millions)
$
100,749
Total number of portfolio holdings5,793
Portfolio turnover rate including
mortgage dollar roll transactions		97
%
Portfolio turnover rate excluding mortgage dollar roll transactions39
%
Holdings [Text Block]
Portfolio holdings by asset type
 (percent of net assets)
Bonds, notes & other debt instruments:
U.S. Treasury bonds & notes32.14
%
Corporate bonds and notes31.32
%
Mortgage-backed obligations23.79
%
Asset-backed obligations7.03
%
Bonds & notes of governments & government agencies outside the U.S.1.65
%
Municipals0.49
%
Loans0.28
%
Federal agency bonds & notes0.03
%
Equities:
Common stocks0.02
%
Preferred securities0.01
%
TBA sale commitments:
Mortgage-backed obligations(0.36
)
%
Short term securities & other assets less liabilities3.60
*
%
Total100.00
%
*Includes derivatives.
Accountant Change Date Dec. 10, 2025
Accountant Change Disagreements [Text Block]
Changes in and disagreements with accountants
On December 10, 2025, Deloitte & Touche LLP (“D&T”) was dismissed and PricewaterhouseCoopers LLP was appointed as the fund’s independent registered public accounting firm for the fiscal year ending December 31, 2026 audit. The change in the fund’s independent registered public accounting firm was approved by the fund’s board of trustees, including a majority of the independent trustees, upon recommendation of the audit committee, as part of a broader effort to update board oversight and fund operations. At no point during the fund’s fiscal years ended December 31, 2024 and December 31, 2025 and the subsequent interim period through February 11, 2026, were there any disagreements between management and D&T on any matter of accounting principles or practices, financial statement disclosure or auditing scope or procedure.
The Bond Fund of America® - Class C  
Shareholder Report [Line Items]  
Fund Name The Bond Fund of America®
Class Name Class C
Trading Symbol BFACX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Bond Fund of America (the "fund") for the period from January 1, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at capitalgroup.com/mutual-fund-literature-C. You can also request this information by contacting us at (800) 421-4225.
Additional Information Phone Number (800) 421-4225
Additional Information Website capitalgroup.com/mutual-fund-literature-C
Expenses [Text Block]
What were the fund costs for the last six months?
(based on a hypothetical $10,000 investment)
Share class
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class C
$
66
1.33
%
*
*Annualized.
Expenses Paid, Amount $ 66
Expense Ratio, Percent 1.33% [1]
Net Assets $ 100,749,000,000
Holdings Count | Holding 5,793
Investment Company, Portfolio Turnover 97.00%
Additional Fund Statistics [Text Block]
Key fund statistics
Fund net assets (in millions)
$
100,749
Total number of portfolio holdings5,793
Portfolio turnover rate including
mortgage dollar roll transactions		97
%
Portfolio turnover rate excluding mortgage dollar roll transactions39
%
Holdings [Text Block]
Portfolio holdings by asset type
 (percent of net assets)
Bonds, notes & other debt instruments:
U.S. Treasury bonds & notes32.14
%
Corporate bonds and notes31.32
%
Mortgage-backed obligations23.79
%
Asset-backed obligations7.03
%
Bonds & notes of governments & government agencies outside the U.S.1.65
%
Municipals0.49
%
Loans0.28
%
Federal agency bonds & notes0.03
%
Equities:
Common stocks0.02
%
Preferred securities0.01
%
TBA sale commitments:
Mortgage-backed obligations(0.36
)
%
Short term securities & other assets less liabilities3.60
*
%
Total100.00
%
*Includes derivatives.
Accountant Change Date Dec. 10, 2025
Accountant Change Disagreements [Text Block]
Changes in and disagreements with accountants
On December 10, 2025, Deloitte & Touche LLP (“D&T”) was dismissed and PricewaterhouseCoopers LLP was appointed as the fund’s independent registered public accounting firm for the fiscal year ending December 31, 2026 audit. The change in the fund’s independent registered public accounting firm was approved by the fund’s board of trustees, including a majority of the independent trustees, upon recommendation of the audit committee, as part of a broader effort to update board oversight and fund operations. At no point during the fund’s fiscal years ended December 31, 2024 and December 31, 2025 and the subsequent interim period through February 11, 2026, were there any disagreements between management and D&T on any matter of accounting principles or practices, financial statement disclosure or auditing scope or procedure.
The Bond Fund of America® - Class F-1  
Shareholder Report [Line Items]  
Fund Name The Bond Fund of America®
Class Name Class F-1
Trading Symbol BFAFX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Bond Fund of America (the "fund") for the period from January 1, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at capitalgroup.com/mutual-fund-literature-F1. You can also request this information by contacting us at (800) 421-4225.
Additional Information Phone Number (800) 421-4225
Additional Information Website capitalgroup.com/mutual-fund-literature-F1
Expenses [Text Block]
What were the fund costs for the last six months?
(based on a hypothetical $10,000 investment)
Share class
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class F-1
$
32		0.64
%
*
*Annualized.
Expenses Paid, Amount $ 32
Expense Ratio, Percent 0.64% [1]
Net Assets $ 100,749,000,000
Holdings Count | Holding 5,793
Investment Company, Portfolio Turnover 97.00%
Additional Fund Statistics [Text Block]
Key fund statistics
Fund net assets (in millions)
$
100,749
Total number of portfolio holdings5,793
Portfolio turnover rate including
mortgage dollar roll transactions		97
%
Portfolio turnover rate excluding mortgage dollar roll transactions39
%
Holdings [Text Block]
Portfolio holdings by asset type
 (percent of net assets)
Bonds, notes & other debt instruments:
U.S. Treasury bonds & notes32.14
%
Corporate bonds and notes31.32
%
Mortgage-backed obligations23.79
%
Asset-backed obligations7.03
%
Bonds & notes of governments & government agencies outside the U.S.1.65
%
Municipals0.49
%
Loans0.28
%
Federal agency bonds & notes0.03
%
Equities:
Common stocks0.02
%
Preferred securities0.01
%
TBA sale commitments:
Mortgage-backed obligations(0.36
)
%
Short term securities & other assets less liabilities3.60
*
%
Total100.00
%
*Includes derivatives.
Accountant Change Date Dec. 10, 2025
Accountant Change Disagreements [Text Block]
Changes in and disagreements with accountants
On December 10, 2025, Deloitte & Touche LLP (“D&T”) was dismissed and PricewaterhouseCoopers LLP was appointed as the fund’s independent registered public accounting firm for the fiscal year ending December 31, 2026 audit. The change in the fund’s independent registered public accounting firm was approved by the fund’s board of trustees, including a majority of the independent trustees, upon recommendation of the audit committee, as part of a broader effort to update board oversight and fund operations. At no point during the fund’s fiscal years ended December 31, 2024 and December 31, 2025 and the subsequent interim period through February 11, 2026, were there any disagreements between management and D&T on any matter of accounting principles or practices, financial statement disclosure or auditing scope or procedure.
The Bond Fund of America® - Class F-2  
Shareholder Report [Line Items]  
Fund Name The Bond Fund of America®
Class Name Class F-2
Trading Symbol ABNFX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Bond Fund of America (the "fund") for the period from January 1, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at capitalgroup.com/mutual-fund-literature-F2. You can also request this information by contacting us at (800) 421-4225.
Additional Information Phone Number (800) 421-4225
Additional Information Website capitalgroup.com/mutual-fund-literature-F2
Expenses [Text Block]
What were the fund costs for the last six months?
(based on a hypothetical $10,000 investment)
Share class
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class F-2
$
18		0.36
%
*
*Annualized.
Expenses Paid, Amount $ 18
Expense Ratio, Percent 0.36% [1]
Net Assets $ 100,749,000,000
Holdings Count | Holding 5,793
Investment Company, Portfolio Turnover 97.00%
Additional Fund Statistics [Text Block]
Key fund statistics
Fund net assets (in millions)
$
100,749
Total number of portfolio holdings5,793
Portfolio turnover rate including
mortgage dollar roll transactions		97
%
Portfolio turnover rate excluding mortgage dollar roll transactions39
%
Holdings [Text Block]
Portfolio holdings by asset type
 (percent of net assets)
Bonds, notes & other debt instruments:
U.S. Treasury bonds & notes32.14
%
Corporate bonds and notes31.32
%
Mortgage-backed obligations23.79
%
Asset-backed obligations7.03
%
Bonds & notes of governments & government agencies outside the U.S.1.65
%
Municipals0.49
%
Loans0.28
%
Federal agency bonds & notes0.03
%
Equities:
Common stocks0.02
%
Preferred securities0.01
%
TBA sale commitments:
Mortgage-backed obligations(0.36
)
%
Short term securities & other assets less liabilities3.60
*
%
Total100.00
%
*Includes derivatives.
Accountant Change Date Dec. 10, 2025
Accountant Change Disagreements [Text Block]
Changes in and disagreements with accountants
On December 10, 2025, Deloitte & Touche LLP (“D&T”) was dismissed and PricewaterhouseCoopers LLP was appointed as the fund’s independent registered public accounting firm for the fiscal year ending December 31, 2026 audit. The change in the fund’s independent registered public accounting firm was approved by the fund’s board of trustees, including a majority of the independent trustees, upon recommendation of the audit committee, as part of a broader effort to update board oversight and fund operations. At no point during the fund’s fiscal years ended December 31, 2024 and December 31, 2025 and the subsequent interim period through February 11, 2026, were there any disagreements between management and D&T on any matter of accounting principles or practices, financial statement disclosure or auditing scope or procedure.
The Bond Fund of America® - Class F-3  
Shareholder Report [Line Items]  
Fund Name The Bond Fund of America®
Class Name Class F-3
Trading Symbol BFFAX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Bond Fund of America (the "fund") for the period from January 1, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at capitalgroup.com/mutual-fund-literature-F3. You can also request this information by contacting us at (800) 421-4225.
Additional Information Phone Number (800) 421-4225
Additional Information Website capitalgroup.com/mutual-fund-literature-F3
Expenses [Text Block]
What were the fund costs for the last six months?
(based on a hyp
ot
hetical $10,000 investment)
Share class
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class F-3
$
12		0.24
%
*
*Annualized.
Expenses Paid, Amount $ 12
Expense Ratio, Percent 0.24% [1]
Net Assets $ 100,749,000,000
Holdings Count | Holding 5,793
Investment Company, Portfolio Turnover 97.00%
Additional Fund Statistics [Text Block]
Key fund s
tat
istics
Fund net assets (in millions)
$
100,749
Total number of portfolio holdings5,793
Portfolio turnover rate including
mortgage dollar roll transactions		97
%
Portfolio turnover rate excluding mortgage dollar roll transactions39
%
Holdings [Text Block]
Portfolio holdings by asset type
 (percent of net assets)
Bonds, notes & other debt instruments:
U.S. Treasury bonds & notes32.14
%
Corporate bonds and notes31.32
%
Mortgage-backed obligations23.79
%
Asset-backed obligations7.03
%
Bonds & notes of governments & government agencies outside the U.S.1.65
%
Municipals0.49
%
Loans0.28
%
Federal agency bonds & notes0.03
%
Equities:
Common stocks0.02
%
Preferred securities0.01
%
TBA sale commitments:
Mortgage-backed obligations(0.36
)
%
Short term securities & other assets less liabilities3.60
*
%
Total100.00
%
*Includes derivatives.
Accountant Change Date Dec. 10, 2025
Accountant Change Disagreements [Text Block]
Changes in and disagreements with accountants
On December 10, 2025, Deloitte & Touche LLP (“D&T”) was dismissed and PricewaterhouseCoopers LLP was appointed as the fund’s independent registered public accounting firm for the fiscal year ending December 31, 2026 audit. The change in the fund’s independent registered public accounting firm was approved by the fund’s board of trustees, including a majority of the independent trustees, upon recommendation of the audit committee, as part of a broader effort to update board oversight and fund operations. At no point during the fund’s fiscal years ended December 31, 2024 and December 31, 2025 and the subsequent interim period through February 11, 2026, were there any disagreements between management and D&T on any matter of accounting principles or practices, financial statement disclosure or auditing scope or procedure.
The Bond Fund of America® - Class 529-A  
Shareholder Report [Line Items]  
Fund Name The Bond Fund of America®
Class Name Class 529-A
Trading Symbol CFAAX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Bond Fund of America (the "fund") for the period from January 1, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at capitalgroup.com/mutual-fund-literature-529A. You can also request this information by contacting us at (800) 421-4225.
Additional Information Phone Number (800) 421-4225
Additional Information Website capitalgroup.com/mutual-fund-literature-529A
Expenses [Text Block]
What were the fund costs for the last six months?
(based on a hypothetical $10,000 investment)
Share class
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class 529-A
$
31		0.62
%
*
*Annualized.
Expenses Paid, Amount $ 31
Expense Ratio, Percent 0.62% [1]
Net Assets $ 100,749,000,000
Holdings Count | Holding 5,793
Investment Company, Portfolio Turnover 97.00%
Additional Fund Statistics [Text Block]
Key fund stat
is
tics
Fund net assets (in millions)
$
100,749
Total number of portfolio holdings5,793
Portfolio turnover rate including
mortgage dollar roll transactions		97
%
Portfolio turnover rate excluding mortgage dollar roll transactions39
%
Holdings [Text Block]
Portfolio holdings by asset type
 (percent of net assets)
Bonds, notes & other debt instruments:
U.S. Treasury bonds & notes32.14
%
Corporate bonds and notes31.32
%
Mortgage-backed obligations23.79
%
Asset-backed obligations7.03
%
Bonds & notes of governments & government agencies outside the U.S.1.65
%
Municipals0.49
%
Loans0.28
%
Federal agency bonds & notes0.03
%
Equities:
Common stocks0.02
%
Preferred securities0.01
%
TBA sale commitments:
Mortgage-backed obligations(0.36
)
%
Short term securities & other assets less liabilities3.60
*
%
Total100.00
%
*Includes derivatives.
Accountant Change Date Dec. 10, 2025
Accountant Change Disagreements [Text Block]
Changes in and disagreements with accountants
On December 10, 2025, Deloitte & Touche LLP (“D&T”) was dismissed and PricewaterhouseCoopers LLP was appointed as the fund’s independent registered public accounting firm for the fiscal year ending December 31, 2026 audit. The change in the fund’s independent registered public accounting firm was approved by the fund’s board of trustees, including a majority of the independent trustees, upon recommendation of the audit committee, as part of a broader effort to update board oversight and fund operations. At no point during the fund’s fiscal years ended December 31, 2024 and December 31, 2025 and the subsequent interim period through February 11, 2026, were there any disagreements between management and D&T on any matter of accounting principles or practices, financial statement disclosure or auditing scope or procedure.
The Bond Fund of America® - Class 529-C  
Shareholder Report [Line Items]  
Fund Name The Bond Fund of America®
Class Name Class 529-C
Trading Symbol CFACX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Bond Fund of America (the "fund") for the period from January 1, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at capitalgroup.com/mutual-fund-literature-529C. You can also request this information by contacting us at (800) 421-4225.
Additional Information Phone Number (800) 421-4225
Additional Information Website capitalgroup.com/mutual-fund-literature-529C
Expenses [Text Block]
What were the fund costs for the last six months?
(based on a hypothetical $10,000 inve
st
ment)
Share class
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class 529-C
$
69		1.39
%
*
*Annualized.
Expenses Paid, Amount $ 69
Expense Ratio, Percent 1.39% [1]
Net Assets $ 100,749,000,000
Holdings Count | Holding 5,793
Investment Company, Portfolio Turnover 97.00%
Additional Fund Statistics [Text Block]
Key fund stat
ist
ics
Fund net assets (in millions)
$
100,749
Total number of portfolio holdings5,793
Portfolio turnover rate including
mortgage dollar roll transactions		97
%
Portfolio turnover rate excluding mortgage dollar roll transactions39
%
Holdings [Text Block]
Portfolio holdings by asset type
 (percent of net assets)
Bonds, notes & other debt instruments:
U.S. Treasury bonds & notes32.14
%
Corporate bonds and notes31.32
%
Mortgage-backed obligations23.79
%
Asset-backed obligations7.03
%
Bonds & notes of governments & government agencies outside the U.S.1.65
%
Municipals0.49
%
Loans0.28
%
Federal agency bonds & notes0.03
%
Equities:
Common stocks0.02
%
Preferred securities0.01
%
TBA sale commitments:
Mortgage-backed obligations(0.36
)
%
Short term securities & other assets less liabilities3.60
*
%
Total100.00
%
*Includes derivatives.
Accountant Change Date Dec. 10, 2025
Accountant Change Disagreements [Text Block]
Changes in and disagreements with accountants
On December 10, 2025, Deloitte & Touche LLP (“D&T”) was dismissed and PricewaterhouseCoopers LLP was appointed as the fund’s independent registered public accounting firm for the fiscal year ending December 31, 2026 audit. The change in the fund’s independent registered public accounting firm was approved by the fund’s board of trustees, including a majority of the independent trustees, upon recommendation of the audit committee, as part of a broader effort to update board oversight and fund operations. At no point during the fund’s fiscal years ended December 31, 2024 and December 31, 2025 and the subsequent interim period through February 11, 2026, were there any disagreements between management and D&T on any matter of accounting principles or practices, financial statement disclosure or auditing scope or procedure.
The Bond Fund of America® - Class 529-E  
Shareholder Report [Line Items]  
Fund Name The Bond Fund of America®
Class Name Class 529-E
Trading Symbol CFAEX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Bond Fund of America (the "fund") for the period from January 1, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at capitalgroup.com/mutual-fund-literature-529E. You can also request this information by contacting us at (800) 421-4225.
Additional Information Phone Number (800) 421-4225
Additional Information Website capitalgroup.com/mutual-fund-literature-529E
Expenses [Text Block]
What were the fund costs for the last six months?
(based on a hypothe
ti
cal $10,000 investment)
Share class
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class 529-E
$
41		0.83
%
*
*Annualized.
Expenses Paid, Amount $ 41
Expense Ratio, Percent 0.83% [1]
Net Assets $ 100,749,000,000
Holdings Count | Holding 5,793
Investment Company, Portfolio Turnover 97.00%
Additional Fund Statistics [Text Block]
Key fund statistics
Fund net assets (in millions)
$
100,749
Total number of portfolio holdings5,793
Portfolio turnover rate including
mortgage dollar roll transactions		97
%
Portfolio turnover rate excluding mortgage dollar roll transactions39
%
Holdings [Text Block]
Portfolio holdings by asset type
 (percent of net assets)
Bonds, notes & other debt instruments:
U.S. Treasury bonds & notes32.14
%
Corporate bonds and notes31.32
%
Mortgage-backed obligations23.79
%
Asset-backed obligations7.03
%
Bonds & notes of governments & government agencies outside the U.S.1.65
%
Municipals0.49
%
Loans0.28
%
Federal agency bonds & notes0.03
%
Equities:
Common stocks0.02
%
Preferred securities0.01
%
TBA sale commitments:
Mortgage-backed obligations(0.36
)
%
Short term securities & other assets less liabilities3.60
*
%
Total100.00
%
*Includes derivatives.
Accountant Change Date Dec. 10, 2025
Accountant Change Disagreements [Text Block]
Changes in and disagreements with accountants
On December 10, 2025, Deloitte & Touche LLP (“D&T”) was dismissed and PricewaterhouseCoopers LLP was appointed as the fund’s independent registered public accounting firm for the fiscal year ending December 31, 2026 audit. The change in the fund’s independent registered public accounting firm was approved by the fund’s board of trustees, including a majority of the independent trustees, upon recommendation of the audit committee, as part of a broader effort to update board oversight and fund operations. At no point during the fund’s fiscal years ended December 31, 2024 and December 31, 2025 and the subsequent interim period through February 11, 2026, were there any disagreements between management and D&T on any matter of accounting principles or practices, financial statement disclosure or auditing scope or procedure.
The Bond Fund of America® - Class 529-F-2  
Shareholder Report [Line Items]  
Fund Name The Bond Fund of America®
Class Name Class 529-F-2
Trading Symbol FFBOX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Bond Fund of America (the "fund") for the period from January 1, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at capitalgroup.com/mutual-fund-literature-529F2. You can also request this information by contacting us at (800) 421-4225.
Additional Information Phone Number (800) 421-4225
Additional Information Website capitalgroup.com/mutual-fund-literature-529F2
Expenses [Text Block]
What were the fund costs for the last six months?
(based on a h
yp
othetical $10,000 investment)
Share class
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class 529-F-2
$
17		0.34
%
*
*Annualized.
Expenses Paid, Amount $ 17
Expense Ratio, Percent 0.34% [1]
Net Assets $ 100,749,000,000
Holdings Count | Holding 5,793
Investment Company, Portfolio Turnover 97.00%
Additional Fund Statistics [Text Block]
Key fund statistics
Fund net assets (in m
ill
ions)
$
100,749
Total number of portfolio holdings5,793
Portfolio turnover rate including
mortgage dollar roll transactions		97
%
Portfolio turnover rate excluding mortgage dollar roll transactions39
%
Holdings [Text Block]
Portfolio holdings by asset type
 (percent of net assets)
Bonds, notes & other debt instruments:
U.S. Treasury bonds & notes32.14
%
Corporate bonds and notes31.32
%
Mortgage-backed obligations23.79
%
Asset-backed obligations7.03
%
Bonds & notes of governments & government agencies outside the U.S.1.65
%
Municipals0.49
%
Loans0.28
%
Federal agency bonds & notes0.03
%
Equities:
Common stocks0.02
%
Preferred securities0.01
%
TBA sale commitments:
Mortgage-backed obligations(0.36
)
%
Short term securities & other assets less liabilities3.60
*
%
Total100.00
%
*Includes derivatives.
Accountant Change Date Dec. 10, 2025
Accountant Change Disagreements [Text Block]
Changes in and disagreements with accountants
On December 10, 2025, Deloitte & Touche LLP (“D&T”) was dismissed and PricewaterhouseCoopers LLP was appointed as the fund’s independent registered public accounting firm for the fiscal year ending December 31, 2026 audit. The change in the fund’s independent registered public accounting firm was approved by the fund’s board of trustees, including a majority of the independent trustees, upon recommendation of the audit committee, as part of a broader effort to update board oversight and fund operations. At no point during the fund’s fiscal years ended December 31, 2024 and December 31, 2025 and the subsequent interim period through February 11, 2026, were there any disagreements between management and D&T on any matter of accounting principles or practices, financial statement disclosure or auditing scope or procedure.
The Bond Fund of America® - Class 529-F-3  
Shareholder Report [Line Items]  
Fund Name The Bond Fund of America®
Class Name Class 529-F-3
Trading Symbol FBOFX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Bond Fund of America (the "fund") for the period from January 1, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at capitalgroup.com/mutual-fund-literature-529F3. You can also request this information by contacting us at (800) 421-4225.
Additional Information Phone Number (800) 421-4225
Additional Information Website capitalgroup.com/mutual-fund-literature-529F3
Expenses [Text Block]
What were the fund costs for the last six months?
(based on a hypothetical $10,000 investment)
Share class
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class 529-F-3
$
15		0.30
%
*
*Annualized.
Expenses Paid, Amount $ 15
Expense Ratio, Percent 0.30% [1]
Net Assets $ 100,749,000,000
Holdings Count | Holding 5,793
Investment Company, Portfolio Turnover 97.00%
Additional Fund Statistics [Text Block]
Key fund sta
tis
tics
Fund net assets (in millions)
$
100,749
Total number of portfolio holdings5,793
Portfolio turnover rate including
mortgage dollar roll transactions		97
%
Portfolio turnover rate excluding mortgage dollar roll transactions39
%
Holdings [Text Block]
Portfolio holdings by asset type
 (percent of net assets)
Bonds, notes & other debt instruments:
U.S. Treasury bonds & notes32.14
%
Corporate bonds and notes31.32
%
Mortgage-backed obligations23.79
%
Asset-backed obligations7.03
%
Bonds & notes of governments & government agencies outside the U.S.1.65
%
Municipals0.49
%
Loans0.28
%
Federal agency bonds & notes0.03
%
Equities:
Common stocks0.02
%
Preferred securities0.01
%
TBA sale commitments:
Mortgage-backed obligations(0.36
)
%
Short term securities & other assets less liabilities3.60
*
%
Total100.00
%
*Includes derivatives.
Accountant Change Date Dec. 10, 2025
Accountant Change Disagreements [Text Block]
Changes in and disagreements with accountants
On December 10, 2025, Deloitte & Touche LLP (“D&T”) was dismissed and PricewaterhouseCoopers LLP was appointed as the fund’s independent registered public accounting firm for the fiscal year ending December 31, 2026 audit. The change in the fund’s independent registered public accounting firm was approved by the fund’s board of trustees, including a majority of the independent trustees, upon recommendation of the audit committee, as part of a broader effort to update board oversight and fund operations. At no point during the fund’s fiscal years ended December 31, 2024 and December 31, 2025 and the subsequent interim period through February 11, 2026, were there any disagreements between management and D&T on any matter of accounting principles or practices, financial statement disclosure or auditing scope or procedure.
The Bond Fund of America® - Class R-1  
Shareholder Report [Line Items]  
Fund Name The Bond Fund of America®
Class Name Class R-1
Trading Symbol RBFAX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Bond Fund of America (the "fund") for the period from January 1, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at capitalgroup.com/mutual-fund-literature-R1. You can also request this information by contacting us at (800) 421-4225.
Additional Information Phone Number (800) 421-4225
Additional Information Website capitalgroup.com/mutual-fund-literature-R1
Expenses [Text Block]
What were the fund costs for the last six months?
(based on a hypothetical $10,000 investment)
Share class
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class R-1
$
66		1.33
%
*
*Annualized.
Expenses Paid, Amount $ 66
Expense Ratio, Percent 1.33% [1]
Net Assets $ 100,749,000,000
Holdings Count | Holding 5,793
Investment Company, Portfolio Turnover 97.00%
Additional Fund Statistics [Text Block]
Key fund statistics
Fund net assets (in millions)
$
100,749
Total number of portfolio holdings5,793
Portfolio turnover rate including
mortgage dollar roll transactions		97
%
Portfolio turnover rate excluding mortgage dollar roll transactions39
%
Holdings [Text Block]
Portfolio holdings by asset type
 (percent o
f n
et assets)
Bonds, notes & other debt instruments:
U.S. Treasury bonds & notes32.14
%
Corporate bonds and notes31.32
%
Mortgage-backed obligations23.79
%
Asset-backed obligations7.03
%
Bonds & notes of governments & government agencies outside the U.S.1.65
%
Municipals0.49
%
Loans0.28
%
Federal agency bonds & notes0.03
%
Equities:
Common stocks0.02
%
Preferred securities0.01
%
TBA sale commitments:
Mortgage-backed obligations(0.36
)
%
Short term securities & other assets less liabilities3.60
*
%
Total100.00
%
*Includes derivatives.
Accountant Change Date Dec. 10, 2025
Accountant Change Disagreements [Text Block]
Changes in and disagreements with accountants
On December 10, 2025, Deloitte & Touche LLP (“D&T”) was dismissed and PricewaterhouseCoopers LLP was appointed as the fund’s independent registered public accounting firm for the fiscal year ending December 31, 2026 audit. The change in the fund’s independent registered public accounting firm was approved by the fund’s board of trustees, including a majority of the independent trustees, upon recommendation of the audit committee, as part of a broader effort to update board oversight and fund operations. At no point during the fund’s fiscal years ended December 31, 2024 and December 31, 2025 and the subsequent interim period through February 11, 2026, were there any disagreements between management and D&T on any matter of accounting principles or practices, financial statement disclosure or auditing scope or procedure.
The Bond Fund of America® - Class R-2  
Shareholder Report [Line Items]  
Fund Name The Bond Fund of America®
Class Name Class R-2
Trading Symbol RBFBX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Bond Fund of America (the "fund") for the period from January 1, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at capitalgroup.com/mutual-fund-literature-R2. You can also request this information by contacting us at (800) 421-4225.
Additional Information Phone Number (800) 421-4225
Additional Information Website capitalgroup.com/mutual-fund-literature-R2
Expenses [Text Block]
What were the fund costs for the last six months?
(based on a hypothetical $10,000 investment)
Share class
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class R-2
$
66		1.34
%
*
*Annualized.
Expenses Paid, Amount $ 66
Expense Ratio, Percent 1.34% [1]
Net Assets $ 100,749,000,000
Holdings Count | Holding 5,793
Investment Company, Portfolio Turnover 97.00%
Additional Fund Statistics [Text Block]
Key fund statistics
Fund net assets (in millions)
$
100,749
Total number of portfolio holdings5,793
Portfolio turnover rate including
mortgage dollar roll transactions		97
%
Portfolio turnover rate excluding mortgage dollar roll transactions39
%
Holdings [Text Block]
Portfolio holdings
by
asset type
 (percent of net assets)
Bonds, notes & other debt instruments:
U.S. Treasury bonds & notes32.14
%
Corporate bonds and notes31.32
%
Mortgage-backed obligations23.79
%
Asset-backed obligations7.03
%
Bonds & notes of governments & government agencies outside the U.S.1.65
%
Municipals0.49
%
Loans0.28
%
Federal agency bonds & notes0.03
%
Equities:
Common stocks0.02
%
Preferred securities0.01
%
TBA sale commitments:
Mortgage-backed obligations(0.36
)
%
Short term securities & other assets less liabilities3.60
*
%
Total100.00
%
*Includes derivatives.
Accountant Change Date Dec. 10, 2025
Accountant Change Disagreements [Text Block]
Changes in and disagreements with accountants
On December 10, 2025, Deloitte & Touche LLP (“D&T”) was dismissed and PricewaterhouseCoopers LLP was appointed as the fund’s independent registered public accounting firm for the fiscal year ending December 31, 2026 audit. The change in the fund’s independent registered public accounting firm was approved by the fund’s board of trustees, including a majority of the independent trustees, upon recommendation of the audit committee, as part of a broader effort to update board oversight and fund operations. At no point during the fund’s fiscal years ended December 31, 2024 and December 31, 2025 and the subsequent interim period through February 11, 2026, were there any disagreements between management and D&T on any matter of accounting principles or practices, financial statement disclosure or auditing scope or procedure.
The Bond Fund of America® - Class R-2E  
Shareholder Report [Line Items]  
Fund Name The Bond Fund of America®
Class Name Class R-2E
Trading Symbol RBEBX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Bond Fund of America (the "fund") for the period from January 1, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at capitalgroup.com/mutual-fund-literature-R2E. You can also request this information by contacting us at (800) 421-4225.
Additional Information Phone Number (800) 421-4225
Additional Information Website capitalgroup.com/mutual-fund-literature-R2E
Expenses [Text Block]
What were the fund costs for the last six months?
(based on a hypothetical $10,000 investment)
Share class
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class R-2E
$
52		1.04
%
*
*Annualized.
Expenses Paid, Amount $ 52
Expense Ratio, Percent 1.04% [1]
Net Assets $ 100,749,000,000
Holdings Count | Holding 5,793
Investment Company, Portfolio Turnover 97.00%
Additional Fund Statistics [Text Block]
Key fund st
ati
stics
Fund net assets (in millions)
$
100,749
Total number of portfolio holdings5,793
Portfolio turnover rate including
mortgage dollar roll transactions		97
%
Portfolio turnover rate excluding mortgage dollar roll transactions39
%
Holdings [Text Block]
Portfolio holdings by asset type
 (percent of net assets)
Bonds, notes & other debt instruments:
U.S. Treasury bonds & notes32.14
%
Corporate bonds and notes31.32
%
Mortgage-backed obligations23.79
%
Asset-backed obligations7.03
%
Bonds & notes of governments & government agencies outside the U.S.1.65
%
Municipals0.49
%
Loans0.28
%
Federal agency bonds & notes0.03
%
Equities:
Common stocks0.02
%
Preferred securities0.01
%
TBA sale commitments:
Mortgage-backed obligations(0.36
)
%
Short term securities & other assets less liabilities3.60
*
%
Total100.00
%
*Includes derivatives.
Accountant Change Date Dec. 10, 2025
Accountant Change Disagreements [Text Block]
Changes in and disagreements with accountants
On December 10, 2025, Deloitte & Touche LLP (“D&T”) was dismissed and PricewaterhouseCoopers LLP was appointed as the fund’s independent registered public accounting firm for the fiscal year ending December 31, 2026 audit. The change in the fund’s independent registered public accounting firm was approved by the fund’s board of trustees, including a majority of the independent trustees, upon recommendation of the audit committee, as part of a broader effort to update board oversight and fund operations. At no point during the fund’s fiscal years ended December 31, 2024 and December 31, 2025 and the subsequent interim period through February 11, 2026, were there any disagreements between management and D&T on any matter of accounting principles or practices, financial statement disclosure or auditing scope or procedure.
The Bond Fund of America® - Class R-3  
Shareholder Report [Line Items]  
Fund Name The Bond Fund of America®
Class Name Class R-3
Trading Symbol RBFCX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Bond Fund of America (the "fund") for the period from January 1, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at capitalgroup.com/mutual-fund-literature-R3. You can also request this information by contacting us at (800) 421-4225.
Additional Information Phone Number (800) 421-4225
Additional Information Website capitalgroup.com/mutual-fund-literature-R3
Expenses [Text Block]
What were the fund costs for the last six months?
(based on a hypothetical $10,000 investment)
Share class
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class R-3
$
44		0.89
%
*
*Annualized.
Expenses Paid, Amount $ 44
Expense Ratio, Percent 0.89% [1]
Net Assets $ 100,749,000,000
Holdings Count | Holding 5,793
Investment Company, Portfolio Turnover 97.00%
Additional Fund Statistics [Text Block]
Key fund statistics
Fund net assets (in millions)
$
100,749
Total number of portfolio holdings5,793
Portfolio turnover rate including
mortgage dollar roll transactions		97
%
Portfolio turnover rate excluding mortgage dollar roll transactions39
%
Holdings [Text Block]
Portfolio holdings by a
sse
t type
 (percent of net assets)
Bonds, notes & other debt instruments:
U.S. Treasury bonds & notes32.14
%
Corporate bonds and notes31.32
%
Mortgage-backed obligations23.79
%
Asset-backed obligations7.03
%
Bonds & notes of governments & government agencies outside the U.S.1.65
%
Municipals0.49
%
Loans0.28
%
Federal agency bonds & notes0.03
%
Equities:
Common stocks0.02
%
Preferred securities0.01
%
TBA sale commitments:
Mortgage-backed obligations(0.36
)
%
Short term securities & other assets less liabilities3.60
*
%
Total100.00
%
*Includes derivatives.
Accountant Change Date Dec. 10, 2025
Accountant Change Disagreements [Text Block]
Changes in and disagreements with accountants
On December 10, 2025, Deloitte & Touche LLP (“D&T”) was dismissed and PricewaterhouseCoopers LLP was appointed as the fund’s independent registered public accounting firm for the fiscal year ending December 31, 2026 audit. The change in the fund’s independent registered public accounting firm was approved by the fund’s board of trustees, including a majority of the independent trustees, upon recommendation of the audit committee, as part of a broader effort to update board oversight and fund operations. At no point during the fund’s fiscal years ended December 31, 2024 and December 31, 2025 and the subsequent interim period through February 11, 2026, were there any disagreements between management and D&T on any matter of accounting principles or practices, financial statement disclosure or auditing scope or procedure.
The Bond Fund of America® - Class R-4  
Shareholder Report [Line Items]  
Fund Name The Bond Fund of America®
Class Name Class R-4
Trading Symbol RBFEX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Bond Fund of America (the "fund") for the period from January 1, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at capitalgroup.com/mutual-fund-literature-R4. You can also request this information by contacting us at (800) 421-4225.
Additional Information Phone Number (800) 421-4225
Additional Information Website capitalgroup.com/mutual-fund-literature-R4
Expenses [Text Block]
What were the fund costs for the last six months?
(based on a hypothetical $10,000 investment)
Share class
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class R-4
$
29		0.58
%
*
*Annualized.
Expenses Paid, Amount $ 29
Expense Ratio, Percent 0.58% [1]
Net Assets $ 100,749,000,000
Holdings Count | Holding 5,793
Investment Company, Portfolio Turnover 97.00%
Additional Fund Statistics [Text Block]
Key fund statistics
Fund net assets (in millions)
$
100,749
Total number of portfolio holdings5,793
Portfolio turnover rate including
mortgage dollar roll transactions		97
%
Portfolio turnover rate excluding mortgage dollar roll transactions39
%
Holdings [Text Block]
Portfolio holdings by asset type
 (percent o
f n
et assets)
Bonds, notes & other debt instruments:
U.S. Treasury bonds & notes32.14
%
Corporate bonds and notes31.32
%
Mortgage-backed obligations23.79
%
Asset-backed obligations7.03
%
Bonds & notes of governments & government agencies outside the U.S.1.65
%
Municipals0.49
%
Loans0.28
%
Federal agency bonds & notes0.03
%
Equities:
Common stocks0.02
%
Preferred securities0.01
%
TBA sale commitments:
Mortgage-backed obligations(0.36
)
%
Short term securities & other assets less liabilities3.60
*
%
Total100.00
%
*Includes derivatives.
Accountant Change Date Dec. 10, 2025
Accountant Change Disagreements [Text Block]
Changes in and disagreements with accountants
On December 10, 2025, Deloitte & Touche LLP (“D&T”) was dismissed and PricewaterhouseCoopers LLP was appointed as the fund’s independent registered public accounting firm for the fiscal year ending December 31, 2026 audit. The change in the fund’s independent registered public accounting firm was approved by the fund’s board of trustees, including a majority of the independent trustees, upon recommendation of the audit committee, as part of a broader effort to update board oversight and fund operations. At no point during the fund’s fiscal years ended December 31, 2024 and December 31, 2025 and the subsequent interim period through February 11, 2026, were there any disagreements between management and D&T on any matter of accounting principles or practices, financial statement disclosure or auditing scope or procedure.
The Bond Fund of America® - Class R-5E  
Shareholder Report [Line Items]  
Fund Name The Bond Fund of America®
Class Name Class R-5E
Trading Symbol RBFHX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Bond Fund of America (the "fund") for the period from January 1, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at capitalgroup.com/mutual-fund-literature-R5E. You can also request this information by contacting us at (800) 421-4225.
Additional Information Phone Number (800) 421-4225
Additional Information Website capitalgroup.com/mutual-fund-literature-R5E
Expenses [Text Block]
What were the fund costs for the last six months?
(based o
n a
hypothetical $10,000 investment)
Share class
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class R-5E
$
19		0.39
%
*
*Annualized.
Expenses Paid, Amount $ 19
Expense Ratio, Percent 0.39% [1]
Net Assets $ 100,749,000,000
Holdings Count | Holding 5,793
Investment Company, Portfolio Turnover 97.00%
Additional Fund Statistics [Text Block]
Key fund statistics
Fund net assets (in millions)
$
100,749
Total number of portfolio holdings5,793
Portfolio turnover rate including
mortgage dollar roll transactions		97
%
Portfolio turnover rate excluding mortgage dollar roll transactions39
%
Holdings [Text Block]
Portfolio holdings by asset type
 (percent of net assets)
Bonds, notes & other debt instruments:
U.S. Treasury bonds & notes32.14
%
Corporate bonds and notes31.32
%
Mortgage-backed obligations23.79
%
Asset-backed obligations7.03
%
Bonds & notes of governments & government agencies outside the U.S.1.65
%
Municipals0.49
%
Loans0.28
%
Federal agency bonds & notes0.03
%
Equities:
Common stocks0.02
%
Preferred securities0.01
%
TBA sale commitments:
Mortgage-backed obligations(0.36
)
%
Short term securities & other assets less liabilities3.60
*
%
Total100.00
%
*Includes derivatives.
Accountant Change Date Dec. 10, 2025
Accountant Change Disagreements [Text Block]
Changes in and disagreements with accountants
On December 10, 2025, Deloitte & Touche LLP (“D&T”) was dismissed and PricewaterhouseCoopers LLP was appointed as the fund’s independent registered public accounting firm for the fiscal year ending December 31, 2026 audit. The change in the fund’s independent registered public accounting firm was approved by the fund’s board of trustees, including a majority of the independent trustees, upon recommendation of the audit committee, as part of a broader effort to update board oversight and fund operations. At no point during the fund’s fiscal years ended December 31, 2024 and December 31, 2025 and the subsequent interim period through February 11, 2026, were there any disagreements between management and D&T on any matter of accounting principles or practices, financial statement disclosure or auditing scope or procedure.
The Bond Fund of America® - Class R-5  
Shareholder Report [Line Items]  
Fund Name The Bond Fund of America®
Class Name Class R-5
Trading Symbol RBFFX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Bond Fund of America (the "fund") for the period from January 1, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at capitalgroup.com/mutual-fund-literature-R5. You can also request this information by contacting us at (800) 421-4225.
Additional Information Phone Number (800) 421-4225
Additional Information Website capitalgroup.com/mutual-fund-literature-R5
Expenses [Text Block]
What were the fund costs for the last six months?
(based on a hypothetical $10,000 investment)
Share class
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class R-5
$
14		0.29
%
*
*Annualized.
Expenses Paid, Amount $ 14
Expense Ratio, Percent 0.29% [1]
Net Assets $ 100,749,000,000
Holdings Count | Holding 5,793
Investment Company, Portfolio Turnover 97.00%
Additional Fund Statistics [Text Block]
Key fund statistics
Fund net assets (in millions)
$
100,749
Total number of portfolio holdings5,793
Portfolio turnover rate including
mortgage dollar roll transactions		97
%
Portfolio turnover rate excluding mortgage dollar roll transactions39
%
Holdings [Text Block]
Portfolio holdings by asset type
 (percent of n
et
assets)
Bonds, notes & other debt instruments:
U.S. Treasury bonds & notes32.14
%
Corporate bonds and notes31.32
%
Mortgage-backed obligations23.79
%
Asset-backed obligations7.03
%
Bonds & notes of governments & government agencies outside the U.S.1.65
%
Municipals0.49
%
Loans0.28
%
Federal agency bonds & notes0.03
%
Equities:
Common stocks0.02
%
Preferred securities0.01
%
TBA sale commitments:
Mortgage-backed obligations(0.36
)
%
Short term securities & other assets less liabilities3.60
*
%
Total100.00
%
*Includes derivatives.
Accountant Change Date Dec. 10, 2025
Accountant Change Disagreements [Text Block]
Changes in and disagreements with accountants
On December 10, 2025, Deloitte & Touche LLP (“D&T”) was dismissed and PricewaterhouseCoopers LLP was appointed as the fund’s independent registered public accounting firm for the fiscal year ending December 31, 2026 audit. The change in the fund’s independent registered public accounting firm was approved by the fund’s board of trustees, including a majority of the independent trustees, upon recommendation of the audit committee, as part of a broader effort to update board oversight and fund operations. At no point during the fund’s fiscal years ended December 31, 2024 and December 31, 2025 and the subsequent interim period through February 11, 2026, were there any disagreements between management and D&T on any matter of accounting principles or practices, financial statement disclosure or auditing scope or procedure.
The Bond Fund of America® - Class R-6  
Shareholder Report [Line Items]  
Fund Name The Bond Fund of America®
Class Name Class R-6
Trading Symbol RBFGX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Bond Fund of America (the "fund") for the period from January 1, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at capitalgroup.com/mutual-fund-literature-R6. You can also request this information by contacting us at (800) 421-4225.
Additional Information Phone Number (800) 421-4225
Additional Information Website capitalgroup.com/mutual-fund-literature-R6
Expenses [Text Block]
What were the fund costs for the last six months?
(based on a hypothetical $10,000 investment)
Share class
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class R-6
$
12		0.24
%
*
*Annualized.
Expenses Paid, Amount $ 12
Expense Ratio, Percent 0.24% [1]
Net Assets $ 100,749,000,000
Holdings Count | Holding 5,793
Investment Company, Portfolio Turnover 97.00%
Additional Fund Statistics [Text Block]
Key fund statistics
Fund net assets (in millions)
$
100,749
Total number of portfolio holdings5,793
Portfolio turnover rate including
mortgage dollar roll transactions		97
%
Portfolio turnover rate excluding mortgage dollar roll transactions39
%
Holdings [Text Block]
Portfolio holdings by asset type
 (percent of n
e
t assets)
Bonds, notes & other debt instruments:
U.S. Treasury bonds & notes32.14
%
Corporate bonds and notes31.32
%
Mortgage-backed obligations23.79
%
Asset-backed obligations7.03
%
Bonds & notes of governments & government agencies outside the U.S.1.65
%
Municipals0.49
%
Loans0.28
%
Federal agency bonds & notes0.03
%
Equities:
Common stocks0.02
%
Preferred securities0.01
%
TBA sale commitments:
Mortgage-backed obligations(0.36
)
%
Short term securities & other assets less liabilities3.60
*
%
Total100.00
%
*Includes derivatives.
Accountant Change Date Dec. 10, 2025
Accountant Change Disagreements [Text Block]
Changes in and disagreements with accountants
On December 10, 2025, Deloitte & Touche LLP (“D&T”) was dismissed and PricewaterhouseCoopers LLP was appointed as the fund’s independent registered public accounting firm for the fiscal year ending December 31, 2026 audit. The change in the fund’s independent registered public accounting firm was approved by the fund’s board of trustees, including a majority of the independent trustees, upon recommendation of the audit committee, as part of a broader effort to update board oversight and fund operations. At no point during the fund’s fiscal years ended December 31, 2024 and December 31, 2025 and the subsequent interim period through February 11, 2026, were there any disagreements between management and D&T on any matter of accounting principles or practices, financial statement disclosure or auditing scope or procedure.
[1] Annualized.