v3.26.1
Shareholder Report
 6 Months Ended
Jan. 31, 2026
USD ($)
Holding
Shareholder Report [Line Items]  
Document Type N-CSRS
Amendment Flag false
Registrant Name AMERICAN FUNDS TAX EXEMPT SERIES II / CA
Entity Central Index Key 0000794389
Entity Investment Company Type N-1A
Document Period End Date Jan. 31, 2026
The Tax-Exempt Fund of California® - Class A [Member]  
Shareholder Report [Line Items]  
Fund Name The Tax-Exempt Fund of California®
Class Name Class A
Trading Symbol TAFTX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Tax-Exempt Fund of California
 
(the "fund") for the period from August 1, 2025 to January 31, 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
$
30		0.58
%
*
*Annualized.
Expenses Paid, Amount $ 30
Expense Ratio, Percent 0.58% [1]
Net Assets $ 3,518,000,000
Holdings Count | Holding 1,718
Investment Company, Portfolio Turnover 13.00%
Additional Fund Statistics [Text Block]
Key fund statistics
Fund net assets (in millions)
$
3,518
Total number of portfolio holdings1,718
Portfolio turnover
rate
13
%
Holdings [Text Block]
Portfolio
quality
summary
*
(percent of net assets)
Graphical Representation - Allocation 1 Chart
*
Bond ratings,
which
typically range from AAA/Aaa (highest) to D (lowest), are assigned by credit rating agencies such as Standard & Poor’s, Moody’s and/or Fitch as an indication of an issuer’s creditworthiness. In assigning a credit rating to a security, the fund looks specifically to the ratings assigned to the issuer of the security by Standard & Poor’s, Moody’s and/or Fitch. If agency ratings differ, the security will be considered to have received the highest of those ratings, consistent with the fund’s investment policies. Securities in the “unrated“ category (above) have not been rated by a rating agency; however, the investment adviser performs its own credit analysis and assigns comparable ratings that are used for compliance with the fund’s investment policies.
†
Includes derivatives.
The Tax-Exempt Fund of California® - Class C [Member]  
Shareholder Report [Line Items]  
Fund Name The Tax-Exempt Fund of California®
Class Name Class C
Trading Symbol TECCX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Tax-Exempt Fund of California (the "fund") for the period from August 1, 2025 to January 31, 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
$
69		1.33
%
*
*
Annualized
.
Expenses Paid, Amount $ 69
Expense Ratio, Percent 1.33% [1]
Net Assets $ 3,518,000,000
Holdings Count | Holding 1,718
Investment Company, Portfolio Turnover 13.00%
Additional Fund Statistics [Text Block]
Key fund statistics
Fund net
assets
(in
millions
)
$
3,518
Total number of portfolio holdings1,718
Portfolio turnover rate13
%
Holdings [Text Block]
Portfolio quality summary
*
(percent of net assets)
Graphical Representation - Allocation 1 Chart
*
Bond
ratings
, which typically range from AAA/Aaa (highest) to D (lowest), are assigned by credit rating agencies such as Standard & Poor’s, Moody’s and/or Fitch as an indication of an issuer’s creditworthiness. In assigning a credit rating to a security, the fund looks specifically to the ratings assigned to the issuer of the security by Standard & Poor’s, Moody’s and/or Fitch. If agency ratings differ, the security will be considered to have received the highest of those ratings, consistent with the fund’s investment policies. Securities in the “unrated“ category (above) have not been rated by a rating agency; however, the investment adviser performs its own credit analysis and assigns comparable ratings that are used for compliance with the fund’s investment policies.
†
Includes derivatives.
The Tax-Exempt Fund of California® - Class T [Member]  
Shareholder Report [Line Items]  
Fund Name The Tax-Exempt Fund of California®
Class Name Class T
Trading Symbol TTCAX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Tax-Exempt Fund of California (the "fund") for the period from August 1, 2025 to January 31, 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
. 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
$
16		0.31
%
*
*
Annualized
.
Expenses Paid, Amount $ 16
Expense Ratio, Percent 0.31% [1]
Net Assets $ 3,518,000,000
Holdings Count | Holding 1,718
Investment Company, Portfolio Turnover 13.00%
Additional Fund Statistics [Text Block]
Key fund statistics
Fund net assets (in millions)
$
3,518
Total number of portfolio
holdings
1,718
Portfolio turnover rate13
%
Holdings [Text Block]
Portfolio quality summary
*
(percent of net assets)
Graphical Representation - Allocation 1 Chart
*
Bond ratings,
which
typically range from AAA/Aaa (highest) to D (lowest), are assigned by credit rating agencies such as Standard & Poor’s, Moody’s and/or Fitch as an indication of an issuer’s creditworthiness. In assigning a credit rating to a security, the fund looks specifically to the ratings assigned to the issuer of the security by Standard & Poor’s, Moody’s and/or Fitch. If agency ratings differ, the security will be considered to have received the highest of those ratings, consistent with the fund’s investment policies. Securities in the “unrated“ category (above) have not been rated by a rating agency; however, the investment adviser performs its own credit analysis and assigns comparable ratings that are used for compliance with the fund’s investment policies.
†
Includes derivatives.
The Tax-Exempt Fund of California® - Class F-1 [Member]  
Shareholder Report [Line Items]  
Fund Name The Tax-Exempt Fund of California®
Class Name Class F-1
Trading Symbol TECFX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Tax-Exempt Fund of California (the "fund") for the period from August 1, 2025 to January 31, 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
$
35		0.68
%
*
*
Annualized
.
Expenses Paid, Amount $ 35
Expense Ratio, Percent 0.68% [1]
Net Assets $ 3,518,000,000
Holdings Count | Holding 1,718
Investment Company, Portfolio Turnover 13.00%
Additional Fund Statistics [Text Block]
Key fund statistics
Fund net assets (in millions)
$
3,518
Total number of portfolio
holdings
1,718
Portfolio turnover rate13
%
Holdings [Text Block]
Portfolio quality summary
*
(percent of net assets)
Graphical Representation - Allocation 1 Chart
*
Bond
ratings
, which typically range from AAA/Aaa (highest) to D (lowest), are assigned by credit rating agencies such as Standard & Poor’s, Moody’s and/or Fitch as an indication of an issuer’s creditworthiness. In assigning a credit rating to a security, the fund looks specifically to the ratings assigned to the issuer of the security by Standard & Poor’s, Moody’s and/or Fitch. If agency ratings differ, the security will be considered to have received the highest of those ratings, consistent with the fund’s investment policies. Securities in the “unrated“ category (above) have not been rated by a rating agency; however, the investment adviser performs its own credit analysis and assigns comparable ratings that are used for compliance with the fund’s investment policies.
†
Includes derivatives.
The Tax-Exempt Fund of California® - Class F-2 [Member]  
Shareholder Report [Line Items]  
Fund Name The Tax-Exempt Fund of California®
Class Name Class F-2
Trading Symbol TEFEX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Tax-Exempt Fund of California
 
(the "fund") for the period from August 1, 2025 to January 31, 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
$
21		0.41
%
*
*
Annualized
.
Expenses Paid, Amount $ 21
Expense Ratio, Percent 0.41% [1]
Net Assets $ 3,518,000,000
Holdings Count | Holding 1,718
Investment Company, Portfolio Turnover 13.00%
Additional Fund Statistics [Text Block]
Key fund statistics
Fund net assets (in millions)
$
3,518
Total number of portfolio
holdings
1,718
Portfolio turnover rate13
%
Holdings [Text Block]
Portfolio
quality summary
*
(percent of net assets)
Graphical Representation - Allocation 1 Chart
*
Bond
ratings
, which typically range from AAA/Aaa (highest) to D (lowest), are assigned by credit rating agencies such as Standard & Poor’s, Moody’s and/or Fitch as an indication of an issuer’s creditworthiness. In assigning a credit rating to a security, the fund looks specifically to the ratings assigned to the issuer of the security by Standard & Poor’s, Moody’s and/or Fitch. If agency ratings differ, the security will be considered to have received the highest of those ratings, consistent with the fund’s investment policies. Securities in the “unrated“ category (above) have not been rated by a rating agency; however, the investment adviser performs its own credit analysis and assigns comparable ratings that are used for compliance with the fund’s investment policies.
†
Includes derivatives.
The Tax-Exempt Fund of California® - Class F-3 [Member]  
Shareholder Report [Line Items]  
Fund Name The Tax-Exempt Fund of California®
Class Name Class F-3
Trading Symbol EXCAX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about The Tax-Exempt Fund of California (the "fund") for the period from August 1, 2025 to January 31, 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 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 $ 3,518,000,000
Holdings Count | Holding 1,718
Investment Company, Portfolio Turnover 13.00%
Additional Fund Statistics [Text Block]
Key fund statistics
Fund net assets (in
millions
)
$
3,518
Total number of portfolio
holdings
1,718
Portfolio turnover rate13
%
Holdings [Text Block]
Portfolio
quality
summary
*
(percent of net assets)
Graphical Representation - Allocation 1 Chart
*
Bond ratings, which typically range from AAA/Aaa (highest) to D (lowest), are assigned by credit rating agencies such as Standard & Poor’s, Moody’s and/or Fitch as an indication of an issuer’s creditworthiness. In assigning a credit rating to a security, the fund looks specifically to the ratings assigned to the issuer of the security by Standard & Poor’s, Moody’s and/or Fitch. If agency ratings differ, the security will be considered to have received the highest of those ratings, consistent with the fund’s investment policies. Securities in the “unrated“ category (above) have not been rated by a rating agency; however, the investment adviser performs its own credit analysis and assigns comparable ratings that are used for compliance with the fund’s investment policies.
†
Includes derivatives.
[1] Annualized.