v3.25.2
Shareholder Report
6 Months Ended
Jun. 30, 2025
USD ($)
Holding
Shareholder Report [Line Items]  
Document Type N-CSRS
Amendment Flag false
Registrant Name American Funds Strategic Bond Fund
Entity Central Index Key 0001655146
Entity Investment Company Type N-1A
Document Period End Date Jun. 30, 2025
American Funds® Strategic Bond Fund - Class A  
Shareholder Report [Line Items]  
Fund Name American Funds® Strategic Bond Fund
Class Name Class A
Trading Symbol ANBAX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about American Funds Strategic Bond Fund
 
(the "fund") for the period from January 1, 2025 to June 30, 2025.
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
$
37
0.72
%
*
*Annualized.
Expenses Paid, Amount $ 37
Expense Ratio, Percent 0.72% [1]
Net Assets $ 19,922,000,000
Holdings Count | Holding 2,187
Investment Company, Portfolio Turnover 122.00%
Additional Fund Statistics [Text Block]
Key
fund
statistics
Fund net assets (in millions)
$
19,922
Total number of portfolio holdings2,187
Portfolio turnover rate including
mortgage dollar roll transactions
122
%
Portfolio turnover rate excluding mortgage dollar roll transactions36
%
Holdings [Text Block]
Portfolio holdings by asset type
 (percent of net assets)
Graphical Representation - Allocation 1 Chart
*Includes derivatives.
American Funds® Strategic Bond Fund - Class C  
Shareholder Report [Line Items]  
Fund Name American Funds® Strategic Bond Fund
Class Name Class C
Trading Symbol ANBCX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about American Funds Strategic Bond Fund (the "fund") for the period from January 1, 2025 to June 30, 2025.
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
$
72
1.42
%
*
*Annualized.
Expenses Paid, Amount $ 72
Expense Ratio, Percent 1.42% [1]
Net Assets $ 19,922,000,000
Holdings Count | Holding 2,187
Investment Company, Portfolio Turnover 122.00%
Additional Fund Statistics [Text Block]
Key fund statistics
Fund net assets (in millions)
$
19,922
Total number of portfolio holdings2,187
Portfolio turnover rate including
mortgage dollar roll transactions
122
%
Portfolio turnover rate excluding mortgage dollar roll transactions36
%
Holdings [Text Block]
Portfolio holdings by asset type
 (percent of net assets)
Graphical Representation - Allocation 1 Chart
*Includes derivatives.
American Funds® Strategic Bond Fund - Class T  
Shareholder Report [Line Items]  
Fund Name American Funds® Strategic Bond Fund
Class Name Class T
Trading Symbol TFSBX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about American Funds Strategic Bond Fund (the "fund") for the period from January 1, 2025 to June 30, 2025.
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
. 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
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 T
$
22
0.43
%
*
*Annualized.
Expenses Paid, Amount $ 22
Expense Ratio, Percent 0.43% [1]
Net Assets $ 19,922,000,000
Holdings Count | Holding 2,187
Investment Company, Portfolio Turnover 122.00%
Additional Fund Statistics [Text Block]
Key fund statistics
Fund net assets (in millions)
$
19,922
Total number of portfolio holdings2,187
Portfolio turnover rate including
mortgage dollar roll transactions
122
%
Portfolio turnover rate excluding mortgage dollar roll transactions36
%
Holdings [Text Block]
Portfolio holdings by asset type
 (percent of net assets)
Graphical Representation - Allocation 1 Chart
*Includes derivatives.
American Funds® Strategic Bond Fund - Class F-1  
Shareholder Report [Line Items]  
Fund Name American Funds® Strategic Bond Fund
Class Name Class F-1
Trading Symbol ANBEX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about American Funds Strategic Bond Fund (the "fund") for the period from January 1, 2025 to June 30, 2025.
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
$
36
0.70
%
*
*Annualized.
Expenses Paid, Amount $ 36
Expense Ratio, Percent 0.70% [1]
Net Assets $ 19,922,000,000
Holdings Count | Holding 2,187
Investment Company, Portfolio Turnover 122.00%
Additional Fund Statistics [Text Block]
Key fund statistics
Fund net assets (in millions)
$
19,922
Total number of portfolio holdings2,187
Portfolio turnover rate including
mortgage dollar roll transactions
122
%
Portfolio turnover rate excluding mortgage dollar roll transactions36
%
Holdings [Text Block]
Portfolio holdings by asset type
 (percent of net assets)
Graphical Representation - Allocation 1 Chart
*Includes derivatives.
American Funds® Strategic Bond Fund - Class F-2  
Shareholder Report [Line Items]  
Fund Name American Funds® Strategic Bond Fund
Class Name Class F-2
Trading Symbol ANBFX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about American Funds Strategic Bond Fund
 
(the "fund") for the period from January 1, 2025 to June 30, 2025.
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
$
22
0.43
%
*
*Annualized.
Expenses Paid, Amount $ 22
Expense Ratio, Percent 0.43% [1]
Net Assets $ 19,922,000,000
Holdings Count | Holding 2,187
Investment Company, Portfolio Turnover 122.00%
Additional Fund Statistics [Text Block]
Key fund statistics
Fund net assets (in millions)
$
19,922
Total number of portfolio holdings2,187
Portfolio turnover rate including
mortgage dollar roll transactions
122
%
Portfolio turnover rate excluding mortgage dollar roll transactions36
%
Holdings [Text Block]
Portfolio holdings by asset type
 (percent of net assets)
Graphical Representation - Allocation 1 Chart
*Includes derivatives.
American Funds® Strategic Bond Fund - Class F-3  
Shareholder Report [Line Items]  
Fund Name American Funds® Strategic Bond Fund
Class Name Class F-3
Trading Symbol ANBGX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about American Funds Strategic Bond Fund (the "fund") for the period from January 1, 2025 to June 30, 2025.
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 hypothetical $10,000 investment)
Share class
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class F-3
$
16
0.31
%
*
*Annualized.
Expenses Paid, Amount $ 16
Expense Ratio, Percent 0.31% [1]
Net Assets $ 19,922,000,000
Holdings Count | Holding 2,187
Investment Company, Portfolio Turnover 122.00%
Additional Fund Statistics [Text Block]
Key fund statistics
Fund net assets (in millions)
$
19,922
Total number of portfolio holdings2,187
Portfolio turnover rate including
mortgage dollar roll transactions
122
%
Portfolio turnover rate excluding mortgage dollar roll transactions36
%
Holdings [Text Block]
Portfolio holdings by asset type
 (percent of net assets)
Graphical Representation - Allocation 1 Chart
*Includes derivatives.
American Funds® Strategic Bond Fund - Class 529-A  
Shareholder Report [Line Items]  
Fund Name American Funds® Strategic Bond Fund
Class Name Class 529-A
Trading Symbol CANAX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about American Funds Strategic Bond Fund (the "fund") for the period from January 1, 2025 to June 30, 2025.
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
$
36
0.70
%
*
*Annualized.
Expenses Paid, Amount $ 36
Expense Ratio, Percent 0.70% [1]
Net Assets $ 19,922,000,000
Holdings Count | Holding 2,187
Investment Company, Portfolio Turnover 122.00%
Additional Fund Statistics [Text Block]
Key fund statistics
Fund net assets (in millions)
$
19,922
Total number of portfolio holdings2,187
Portfolio turnover rate including
mortgage dollar roll transactions
122
%
Portfolio turnover rate excluding mortgage dollar roll transactions36
%
Holdings [Text Block]
Portfolio holdings by asset type
 (percent of net assets)
Graphical Representation - Allocation 1 Chart
*Includes derivatives.
American Funds® Strategic Bond Fund - Class 529-C  
Shareholder Report [Line Items]  
Fund Name American Funds® Strategic Bond Fund
Class Name Class 529-C
Trading Symbol CANCX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about American Funds Strategic Bond Fund (the "fund") for the period from January 1, 2025 to June 30, 2025.
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 investment)
Share class
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class 529-C
$
75
1.47
%
*
*Annualized.
Expenses Paid, Amount $ 75
Expense Ratio, Percent 1.47% [1]
Net Assets $ 19,922,000,000
Holdings Count | Holding 2,187
Investment Company, Portfolio Turnover 122.00%
Additional Fund Statistics [Text Block]
Key fund statistics
Fund net assets (in millions)
$
19,922
Total number of portfolio holdings2,187
Portfolio turnover rate including
mortgage dollar roll transactions
122
%
Portfolio turnover rate excluding mortgage dollar roll transactions
36
%
Holdings [Text Block]
Portfolio holdings by asset type
 (percent of net assets)
Graphical Representation - Allocation 1 Chart
*Includes derivatives.
American Funds® Strategic Bond Fund - Class 529-E  
Shareholder Report [Line Items]  
Fund Name American Funds® Strategic Bond Fund
Class Name Class 529-E
Trading Symbol CANEX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about American Funds Strategic Bond Fund (the "fund") for the period from January 1, 2025 to June 30, 2025.
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 hypothetical $10,000 investment)
Share class
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class 529-E
$
46
0.90
%
*
*Annualized.
Expenses Paid, Amount $ 46
Expense Ratio, Percent 0.90% [1]
Net Assets $ 19,922,000,000
Holdings Count | Holding 2,187
Investment Company, Portfolio Turnover 122.00%
Additional Fund Statistics [Text Block]
Key fund statistics
Fund net assets (in millions)
$
19,922
Total number of portfolio holdings2,187
Portfolio turnover rate including
mortgage dollar roll transactions
122
%
Portfolio turnover rate excluding mortgage dollar roll transactions36
%
Holdings [Text Block]
Portfolio holdings by asset type
 (percent of net assets)
Graphical Representation - Allocation 1 Chart
*Includes derivatives.
American Funds® Strategic Bond Fund - Class 529-T  
Shareholder Report [Line Items]  
Fund Name American Funds® Strategic Bond Fund
Class Name Class 529-T
Trading Symbol TSFBX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about American Funds Strategic Bond Fund (the "fund") for the period from January 1, 2025 to June 30, 2025.
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
. 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
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-T
$
24
0.47
%
*
*Annualized.
Expenses Paid, Amount $ 24
Expense Ratio, Percent 0.47% [1]
Net Assets $ 19,922,000,000
Holdings Count | Holding 2,187
Investment Company, Portfolio Turnover 122.00%
Additional Fund Statistics [Text Block]
Key fund statistics
Fund net assets (in millions)
$
19,922
Total number of portfolio holdings2,187
Portfolio turnover rate including
mortgage dollar roll transactions
122
%
Portfolio turnover rate excluding mortgage dollar roll transactions36
%
Holdings [Text Block]
Portfolio holdings by asset type
 (percent of net assets)
Graphical Representation - Allocation 1 Chart
*Includes derivatives.
American Funds® Strategic Bond Fund - Class 529-F-1  
Shareholder Report [Line Items]  
Fund Name American Funds® Strategic Bond Fund
Class Name Class 529-F-1
Trading Symbol CANFX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about American Funds Strategic Bond Fund (the "fund") for the period from January 1, 2025 to June 30, 2025.
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-529F1
. 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-529F1
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-1
$
24
0.48
%
*
*Annualized.
Expenses Paid, Amount $ 24
Expense Ratio, Percent 0.48% [1]
Net Assets $ 19,922,000,000
Holdings Count | Holding 2,187
Investment Company, Portfolio Turnover 122.00%
Additional Fund Statistics [Text Block]
Key fund statistics
Fund net assets (in millions)
$
19,922
Total number of portfolio holdings2,187
Portfolio turnover rate including
mortgage dollar roll transactions
122
%
Portfolio turnover rate excluding mortgage dollar roll transactions36
%
Holdings [Text Block]
Portfolio holdings by asset type
 (percent of net assets)
Graphical Representation - Allocation 1 Chart
*Includes derivatives.
American Funds® Strategic Bond Fund - Class 529-F-2  
Shareholder Report [Line Items]  
Fund Name American Funds® Strategic Bond Fund
Class Name Class 529-F-2
Trading Symbol FSBMX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about American Funds Strategic Bond Fund (the "fund") for the period from January 1, 2025 to June 30, 2025.
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 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-2
$
20
0.40
%
*
*Annualized.
Expenses Paid, Amount $ 20
Expense Ratio, Percent 0.40% [1]
Net Assets $ 19,922,000,000
Holdings Count | Holding 2,187
Investment Company, Portfolio Turnover 122.00%
Additional Fund Statistics [Text Block]
Key fund statistics
Fund net assets (in millions)
$
19,922
Total number of portfolio holdings2,187
Portfolio turnover rate including
mortgage dollar roll transactions
122
%
Portfolio turnover rate excluding mortgage dollar roll transactions36
%
Holdings [Text Block]
Portfolio holdings by asset type
 (percent of net assets)
Graphical Representation - Allocation 1 Chart
*Includes derivatives.
American Funds® Strategic Bond Fund - Class 529-F-3  
Shareholder Report [Line Items]  
Fund Name American Funds® Strategic Bond Fund
Class Name Class 529-F-3
Trading Symbol FBSSX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about American Funds Strategic Bond Fund (the "fund") for the period from January 1, 2025 to June 30, 2025.
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
$
18
0.35
%
*
*Annualized.
Expenses Paid, Amount $ 18
Expense Ratio, Percent 0.35% [1]
Net Assets $ 19,922,000,000
Holdings Count | Holding 2,187
Investment Company, Portfolio Turnover 122.00%
Additional Fund Statistics [Text Block]
Key fund statistics
Fund net assets (in millions)
$
19,922
Total number of portfolio holdings2,187
Portfolio turnover rate including
mortgage dollar roll transactions
122
%
Portfolio turnover rate excluding mortgage dollar roll transactions36
%
Holdings [Text Block]
Portfolio holdings by asset type
 (percent of net assets)
Graphical Representation - Allocation 1 Chart
*Includes derivatives.
American Funds® Strategic Bond Fund - Class R-1  
Shareholder Report [Line Items]  
Fund Name American Funds® Strategic Bond Fund
Class Name Class R-1
Trading Symbol RANAX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about American Funds Strategic Bond Fund (the "fund") for the period from January 1, 2025 to June 30, 2025.
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
$
71
1.40
%
*
*Annualized.
Expenses Paid, Amount $ 71
Expense Ratio, Percent 1.40% [1]
Net Assets $ 19,922,000,000
Holdings Count | Holding 2,187
Investment Company, Portfolio Turnover 122.00%
Additional Fund Statistics [Text Block]
Key fund statistics
Fund net assets (in millions)
$
19,922
Total number of portfolio holdings2,187
Portfolio turnover rate including
mortgage dollar roll transactions
122
%
Portfolio turnover rate excluding mortgage dollar roll transactions36
%
Holdings [Text Block]
Portfolio holdings by asset type
 (percent of net assets)
Graphical Representation - Allocation 1 Chart
*Includes derivatives.
American Funds® Strategic Bond Fund - Class R-2  
Shareholder Report [Line Items]  
Fund Name American Funds® Strategic Bond Fund
Class Name Class R-2
Trading Symbol RANBX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about American Funds Strategic Bond Fund (the "fund") for the period from January 1, 2025 to June 30, 2025.
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
$
69
1.35
%
*
*Annualized.
Expenses Paid, Amount $ 69
Expense Ratio, Percent 1.35% [1]
Net Assets $ 19,922,000,000
Holdings Count | Holding 2,187
Investment Company, Portfolio Turnover 122.00%
Additional Fund Statistics [Text Block]
Key fund statistics
Fund net assets (in millions)
$
19,922
Total number of portfolio holdings2,187
Portfolio turnover rate including
mortgage dollar roll transactions
122
%
Portfolio turnover rate excluding mortgage dollar roll transactions36
%
Holdings [Text Block]
Portfolio holdings by asset type
 (percent of net assets)
Graphical Representation - Allocation 1 Chart
*Includes derivatives.
American Funds Strategic Bond Fund - Class R-2E  
Shareholder Report [Line Items]  
Fund Name American Funds® Strategic Bond Fund
Class Name Class R-2E
Trading Symbol RANHX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about American Funds Strategic Bond Fund (the "fund") for the period from January 1, 2025 to June 30, 2025.
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
$
58
1.13
%
*
*Annualized.
Expenses Paid, Amount $ 58
Expense Ratio, Percent 1.13% [1]
Net Assets $ 19,922,000,000
Holdings Count | Holding 2,187
Investment Company, Portfolio Turnover 122.00%
Additional Fund Statistics [Text Block]
Key fund statistics
Fund net assets (in millions)
$
19,922
Total number of portfolio holdings2,187
Portfolio turnover rate including
mortgage dollar roll transactions
122
%
Portfolio turnover rate excluding mortgage dollar roll transactions36
%
Holdings [Text Block]
Portfolio holdings by asset type
 (percent of net assets)
Graphical Representation - Allocation 1 Chart
*Includes derivatives.
American Funds Strategic Bond Fund - Class R-3  
Shareholder Report [Line Items]  
Fund Name American Funds® Strategic Bond Fund
Class Name Class R-3
Trading Symbol RANCX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about American Funds Strategic Bond Fund (the "fund") for the period from January 1, 2025 to June 30, 2025.
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
$
48
0.95
%
*
*Annualized.
Expenses Paid, Amount $ 48
Expense Ratio, Percent 0.95% [1]
Net Assets $ 19,922,000,000
Holdings Count | Holding 2,187
Investment Company, Portfolio Turnover 122.00%
Additional Fund Statistics [Text Block]
Key fund statistics
Fund net assets (in millions)
$
19,922
Total number of portfolio holdings2,187
Portfolio turnover rate including
mortgage dollar roll transactions
122
%
Portfolio turnover rate excluding mortgage dollar roll transactions36
%
Holdings [Text Block]
Portfolio holdings by asset type
 (percent of net assets)
Graphical Representation - Allocation 1 Chart
*Includes derivatives.
American Funds Strategic Bond Fund - Class R-4  
Shareholder Report [Line Items]  
Fund Name American Funds® Strategic Bond Fund
Class Name Class R-4
Trading Symbol RANEX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about American Funds Strategic Bond Fund (the "fund") for the period from January 1, 2025 to June 30, 2025.
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
$
33
0.64
%
*
*Annualized.
Expenses Paid, Amount $ 33
Expense Ratio, Percent 0.64% [1]
Net Assets $ 19,922,000,000
Holdings Count | Holding 2,187
Investment Company, Portfolio Turnover 122.00%
Additional Fund Statistics [Text Block]
Key
fund statistics
Fund net assets (in millions)
$
19,922
Total number of portfolio holdings2,187
Portfolio turnover rate including
mortgage dollar roll transactions
122
%
Portfolio turnover rate excluding mortgage dollar roll transactions36
%
Holdings [Text Block]
Portfolio holdings by asset type
 (percent of net assets)
Graphical Representation - Allocation 1 Chart
*Includes derivatives.
American Funds Strategic Bond Fund - Class R-5E  
Shareholder Report [Line Items]  
Fund Name American Funds® Strategic Bond Fund
Class Name Class R-5E
Trading Symbol RANJX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about American Funds Strategic Bond Fund (the "fund") for the period from January 1, 2025 to June 30, 2025.
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 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-5E
$
24
0.47
%
*
*Annualized.
Expenses Paid, Amount $ 24
Expense Ratio, Percent 0.47% [1]
Net Assets $ 19,922,000,000
Holdings Count | Holding 2,187
Investment Company, Portfolio Turnover 122.00%
Additional Fund Statistics [Text Block]
Key fund statistics
Fund net assets (in millions)
$
19,922
Total number of portfolio holdings2,187
Portfolio turnover rate including
mortgage dollar roll transactions
122
%
Portfolio turnover rate excluding mortgage dollar roll transactions36
%
Holdings [Text Block]
Portfolio holdings by asset type
 (percent of net assets)
Graphical Representation - Allocation 1 Chart
*Includes derivatives.
American Funds Strategic Bond Fund - Class R-5  
Shareholder Report [Line Items]  
Fund Name American Funds® Strategic Bond Fund
Class Name Class R-5
Trading Symbol RANFX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about American Funds Strategic Bond Fund (the "fund") for the period from January 1, 2025 to June 30, 2025.
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
$
19
0.37
%
*
*Annualized.
Expenses Paid, Amount $ 19
Expense Ratio, Percent 0.37% [1]
Net Assets $ 19,922,000,000
Holdings Count | Holding 2,187
Investment Company, Portfolio Turnover 122.00%
Additional Fund Statistics [Text Block]
Key fund statistics
Fund net assets (in millions)
$
19,922
Total number of portfolio holdings2,187
Portfolio turnover rate including
mortgage dollar roll transactions
122
%
Portfolio turnover rate excluding mortgage dollar roll transactions36
%
Holdings [Text Block]
Portfolio holdings by asset type
 (percent of net assets)
Graphical Representation - Allocation 1 Chart
*Includes derivatives.
American Funds Strategic Bond Fund - Class R-6  
Shareholder Report [Line Items]  
Fund Name American Funds® Strategic Bond Fund
Class Name Class R-6
Trading Symbol RANGX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about American Funds Strategic Bond Fund (the "fund") for the period from January 1, 2025 to June 30, 2025.
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
$
16
0.31
%
*
*Annualized.
Expenses Paid, Amount $ 16
Expense Ratio, Percent 0.31% [1]
Net Assets $ 19,922,000,000
Holdings Count | Holding 2,187
Investment Company, Portfolio Turnover 122.00%
Additional Fund Statistics [Text Block]
Key fund statistics
Fund net assets (in millions)
$
19,922
Total number of portfolio holdings2,187
Portfolio turnover rate including
mortgage dollar roll transactions
122
%
Portfolio turnover rate excluding mortgage dollar roll transactions36
%
Holdings [Text Block]
Portfolio holdings by asset type
 (percent of net assets)
Graphical Representation - Allocation 1 Chart
*Includes derivatives.
[1] Annualized.