Performance Management
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Dec. 30, 2025 |
| Capital Group California Core Municipal Fund | Capital Group California Core Municipal Fund |
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| Prospectus [Line Items] |
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| Bar Chart and Performance Table [Heading] |
Investment
results
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| Performance Narrative [Text Block] |
The following
bar chart shows how the fund’s investment results have varied from year to year, and the following table shows how the fund’s
average annual total returns for various periods compare with a broad measure of securities market results and, if applicable, other
measures of market results that reflect the fund’s investment universe. This information provides some indication of the risks
of investing in the fund. Past investment results (before and after taxes) are not predictive of future investment results. Updated information
on the fund’s investment results can be obtained by calling the fund’s transfer agent at (800) 421-4996.
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| Performance Past Does Not Indicate Future [Text] |
Past investment results (before and after taxes) are not predictive of future investment results.
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| Performance Information Illustrates Variability of Returns [Text] |
The following
bar chart shows how the fund’s investment results have varied from year to year, and the following table shows how the fund’s
average annual total returns for various periods compare with a broad measure of securities market results and, if applicable, other
measures of market results that reflect the fund’s investment universe.
|
| Bar Chart Narrative [Text Block] |
The following bar chart shows how the fund’s investment results have varied from year to year, and the following table shows how the fund’s average annual total returns for various periods compare with a broad measure of securities market results and, if applicable, other measures of market results that reflect the fund’s investment universe.
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| Bar Chart [Heading] |
Calendar year total returns for fund shares
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| Bar Chart [Table] |
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| Bar Chart Closing [Text Block] |
Highest/Lowest quarterly results during this period were:
Highest 5.06% (quarter ended December 31, 2023)
Lowest -3.87% (quarter ended March 31, 2022)
The fund's total return for the nine months ended September 30, 2025, was 3.72%.
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| Year to Date Return, Label [Optional Text] |
The fund's total return for the nine months ended
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| Bar Chart, Year to Date Return |
3.72%
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| Bar Chart, Year to Date Return, Date |
Sep. 30, 2025
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| Highest Quarterly Return, Label [Optional Text] |
Highest
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| Highest Quarterly Return |
5.06%
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| Highest Quarterly Return, Date |
Dec. 31, 2023
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| Lowest Quarterly Return, Label [Optional Text] |
Lowest
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| Lowest Quarterly Return |
(3.87%)
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| Lowest Quarterly Return, Date |
Mar. 31, 2022
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| Performance Table Uses Highest Federal Rate |
After-tax
returns are calculated using the highest individual federal income tax rates in effect during each year of the periods shown and do not
reflect the impact of state and local taxes.
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| Performance Table Not Relevant to Tax Deferred |
Your actual after-tax returns depend on your individual tax situation and likely will differ
from the results shown above. In addition, after-tax returns are not relevant if you hold your fund shares through a tax-favored arrangement,
such as a 401(k) plan or individual retirement account (IRA).
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| Performance [Table] |
| | | | | | | | Average annual total returns For the periods ended December 31, 2024: | | | Inception date | 1 year | 5 years | 10 years | Lifetime | | − Before taxes | 4/13/2010 | 1.41% | 0.97% | 1.61% | 2.12% | | − After taxes on distributions | | 1.41 | 0.89 | 1.56 | N/A | | − After taxes on distributions and sale of fund shares | 1.81 | 1.12 | 1.64 | N/A |
| | | | | | | Indexes | 1 year | 5 years | 10 years | Lifetime | | Bloomberg Municipal Bond Index (reflects no deductions for account fees, expenses or U.S. federal income taxes) | 1.05% | 0.99% | 2.25% | 3.18% | | Bloomberg California Short-Intermediate Municipal Index (reflects no deductions for account fees, expenses or U.S. federal income taxes) | 1.02 | 0.90 | 1.56 | 2.23 | The fund’s annualized 30-day yield at October 31, 2025: 2.50%
(For current yield information, please call the fund’s transfer agent at (800) 421-4996.) |
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| Average Annual Return, Caption [Optional Text] |
Average annual total returns For the periods ended December 31, 2024:
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| Index No Deduction for Fees, Expenses, or Taxes [Text] |
(reflects no deductions for account fees, expenses or U.S. federal income taxes)
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| Performance Table Closing [Text Block] |
After-tax
returns are calculated using the highest individual federal income tax rates in effect during each year of the periods shown and do not
reflect the impact of state and local taxes. Your actual after-tax returns depend on your individual tax situation and likely will differ
from the results shown above. In addition, after-tax returns are not relevant if you hold your fund shares through a tax-favored arrangement,
such as a 401(k) plan or individual retirement account (IRA).
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| Thirty Day Yield Caption [Optional Text] |
The fund’s annualized 30-day yield at October 31, 2025:
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| Thirty Day Yield Phone |
(800) 421-4996
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| Thirty Day Yield |
2.50%
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| Performance Availability Phone [Text] |
(800) 421-4996
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| Capital Group California Short-Term Municipal Fund | Capital Group California Short-Term Municipal Fund |
|
| Prospectus [Line Items] |
|
| Bar Chart and Performance Table [Heading] |
Investment
results
|
| Performance Narrative [Text Block] |
The following
bar chart shows how the fund’s investment results have varied from year to year, and the following table shows how the fund’s
average annual total returns for various periods compare with a broad measure of securities market results and, if applicable, other
measures of market results that reflect the fund’s investment universe. This information provides some indication of the risks
of investing in the fund. Past investment results (before and after taxes) are not predictive of future investment results. Updated information
on the fund’s investment results can be obtained by calling the fund’s transfer agent at (800) 421-4996.
|
| Performance Past Does Not Indicate Future [Text] |
Past investment results (before and after taxes) are not predictive of future investment results.
|
| Performance Information Illustrates Variability of Returns [Text] |
The following
bar chart shows how the fund’s investment results have varied from year to year, and the following table shows how the fund’s
average annual total returns for various periods compare with a broad measure of securities market results and, if applicable, other
measures of market results that reflect the fund’s investment universe.
|
| Bar Chart Narrative [Text Block] |
The following bar chart shows how the fund’s investment results have varied from year to year, and the following table shows how the fund’s average annual total returns for various periods compare with a broad measure of securities market results and, if applicable, other measures of market results that reflect the fund’s investment universe.
|
| Bar Chart [Heading] |
Calendar year total returns for fund shares
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| Bar Chart [Table] |
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| Bar Chart Closing [Text Block] |
Highest/Lowest quarterly results during this period were:
Highest 3.31% (quarter ended December 31, 2023)
Lowest -2.86% (quarter ended March 31, 2022)
The fund's total return for the nine months ended September 30, 2025, was 3.50%.
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| Year to Date Return, Label [Optional Text] |
The fund's total return for the nine months ended
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| Bar Chart, Year to Date Return |
3.50%
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| Bar Chart, Year to Date Return, Date |
Sep. 30, 2025
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| Highest Quarterly Return, Label [Optional Text] |
Highest
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| Highest Quarterly Return |
3.31%
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| Highest Quarterly Return, Date |
Dec. 31, 2023
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| Lowest Quarterly Return, Label [Optional Text] |
Lowest
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| Lowest Quarterly Return |
(2.86%)
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| Lowest Quarterly Return, Date |
Mar. 31, 2022
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| Performance Table Uses Highest Federal Rate |
After-tax
returns are calculated using the highest individual federal income tax rates in effect during each year of the periods shown and do not
reflect the impact of state and local taxes.
|
| Performance Table Not Relevant to Tax Deferred |
Your actual after-tax returns depend on your individual tax situation and likely will differ
from the results shown above. In addition, after-tax returns are not relevant if you hold your fund shares through a tax-favored arrangement,
such as a 401(k) plan or individual retirement account (IRA).
|
| Performance [Table] |
| | | | | | | | Average annual total returns For the periods ended December 31, 2024: | | | Inception date | 1 year | 5 years | 10 years | Lifetime | | − Before taxes | 4/13/2010 | 2.04% | 0.84% | 1.06% | 1.19% | | − After taxes on distributions | | 2.04 | 0.81 | 1.03 | N/A | | − After taxes on distributions and sale of fund shares | 2.08 | 0.95 | 1.10 | N/A |
| | | | | | | Indexes | 1 year | 5 years | 10 years | Lifetime | | Bloomberg Municipal Bond Index (reflects no deductions for account fees or U.S. federal income taxes) | 1.05% | 0.99% | 2.25% | 3.18% | | Bloomberg California Short Municipal Index (reflects no deductions for account fees, expenses or U.S. federal income taxes) | 1.95 | 1.00 | 1.25 | 1.49% | The fund’s annualized 30-day yield at October 31, 2025: 2.02%
(For current yield information, please call the fund’s transfer agent at (800) 421-4996.) |
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| Average Annual Return, Caption [Optional Text] |
Average annual total returns For the periods ended December 31, 2024:
|
| Index No Deduction for Fees, Expenses, or Taxes [Text] |
(reflects no deductions for account fees, expenses or U.S. federal income taxes)
|
| Performance Table Closing [Text Block] |
After-tax
returns are calculated using the highest individual federal income tax rates in effect during each year of the periods shown and do not
reflect the impact of state and local taxes. Your actual after-tax returns depend on your individual tax situation and likely will differ
from the results shown above. In addition, after-tax returns are not relevant if you hold your fund shares through a tax-favored arrangement,
such as a 401(k) plan or individual retirement account (IRA).
|
| Thirty Day Yield Caption [Optional Text] |
The fund’s annualized 30-day yield at October 31, 2025:
|
| Thirty Day Yield Phone |
(800) 421-4996
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| Thirty Day Yield |
2.02%
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| Performance Availability Phone [Text] |
(800) 421-4996
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