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Shareholder Report
6 Months Ended
Apr. 30, 2025
USD ($)
$ / shares
Shareholder Report [Line Items]  
Document Type N-CSRS
Amendment Flag false
Registrant Name Franklin Investors Securities Trust
Entity Central Index Key 0000809707
Entity Investment Company Type N-1A
Document Period End Date Apr. 30, 2025
Class A  
Shareholder Report [Line Items]  
Fund Name Franklin Convertible Securities Fund
Class Name Class A
Trading Symbol FISCX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Franklin Convertible Securities Fund for the period November 1, 2024, to April 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 https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) DIAL BEN/342-5236.
Additional Information Phone Number (800) DIAL BEN/342-5236
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*,
Class A
$41
0.81%
[1],[2]
Expenses Paid, Amount $ 41
Expense Ratio, Percent 0.81%
Net Assets $ 2,693,838,876
Holdings Count | $ / shares 75 [3]
Investment Company Portfolio Turnover 12.85%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of April 30, 2025)
Total Net Assets
$2,693,838,876
Total Number of Portfolio Holdings*
75
Portfolio Turnover Rate
12.85%
[3]
Holdings [Text Block]
image
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class C  
Shareholder Report [Line Items]  
Fund Name Franklin Convertible Securities Fund
Class Name Class C
Trading Symbol FROTX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Franklin Convertible Securities Fund for the period November 1, 2024, to April 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 https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) DIAL BEN/342-5236.
Additional Information Phone Number (800) DIAL BEN/342-5236
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*,
Class C
$78
1.56%
[4],[5]
Expenses Paid, Amount $ 78
Expense Ratio, Percent 1.56%
Net Assets $ 2,693,838,876
Holdings Count | $ / shares 75 [6]
Investment Company Portfolio Turnover 12.85%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of April 30, 2025)
Total Net Assets
$2,693,838,876
Total Number of Portfolio Holdings*
75
Portfolio Turnover Rate
12.85%
[6]
Holdings [Text Block]
image
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R6  
Shareholder Report [Line Items]  
Fund Name Franklin Convertible Securities Fund
Class Name Class R6
Trading Symbol FCSKX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Franklin Convertible Securities Fund for the period November 1, 2024, to April 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 https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) DIAL BEN/342-5236.
Additional Information Phone Number (800) DIAL BEN/342-5236
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*,
Class R6
$25
0.50%
[7],[8]
Expenses Paid, Amount $ 25
Expense Ratio, Percent 0.50%
Net Assets $ 2,693,838,876
Holdings Count | $ / shares 75 [9]
Investment Company Portfolio Turnover 12.85%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of April 30, 2025)
Total Net Assets
$2,693,838,876
Total Number of Portfolio Holdings*
75
Portfolio Turnover Rate
12.85%
[9]
Holdings [Text Block]
image
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Advisor Class  
Shareholder Report [Line Items]  
Fund Name Franklin Convertible Securities Fund
Class Name Advisor Class
Trading Symbol FCSZX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Franklin Convertible Securities Fund for the period November 1, 2024, to April 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 https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) DIAL BEN/342-5236.
Additional Information Phone Number (800) DIAL BEN/342-5236
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*,
Advisor Class
$28
0.56%
[10],[11]
Expenses Paid, Amount $ 28
Expense Ratio, Percent 0.56%
Net Assets $ 2,693,838,876
Holdings Count | $ / shares 75 [12]
Investment Company Portfolio Turnover 12.85%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of April 30, 2025)
Total Net Assets
$2,693,838,876
Total Number of Portfolio Holdings*
75
Portfolio Turnover Rate
12.85%
[12]
Holdings [Text Block]
image
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class A  
Shareholder Report [Line Items]  
Fund Name Franklin Equity Income Fund
Class Name Class A
Trading Symbol FISEX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Franklin Equity Income Fund for the period November 1, 2024, to April 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 https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) DIAL BEN/342-5236.
Additional Information Phone Number (800) DIAL BEN/342-5236
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*,
Class A
$40
0.81%
[13],[14]
Expenses Paid, Amount $ 40
Expense Ratio, Percent 0.81%
Net Assets $ 3,957,629,597
Holdings Count | $ / shares 85 [15]
Investment Company Portfolio Turnover 16.42%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of April 30, 2025)
Total Net Assets
$3,957,629,597
Total Number of Portfolio Holdings*
85
Portfolio Turnover Rate
16.42%
[15]
Holdings [Text Block]
image
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class C  
Shareholder Report [Line Items]  
Fund Name Franklin Equity Income Fund
Class Name Class C
Trading Symbol FRETX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Franklin Equity Income Fund for the period November 1, 2024, to April 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 https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) DIAL BEN/342-5236.
Additional Information Phone Number (800) DIAL BEN/342-5236
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*,
Class C
$76
1.56%
[16],[17]
Expenses Paid, Amount $ 76
Expense Ratio, Percent 1.56%
Net Assets $ 3,957,629,597
Holdings Count | $ / shares 85 [18]
Investment Company Portfolio Turnover 16.42%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of April 30, 2025)
Total Net Assets
$3,957,629,597
Total Number of Portfolio Holdings*
85
Portfolio Turnover Rate
16.42%
[18]
Holdings [Text Block]
image
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R  
Shareholder Report [Line Items]  
Fund Name Franklin Equity Income Fund
Class Name Class R
Trading Symbol FREIX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Franklin Equity Income Fund for the period November 1, 2024, to April 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 https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) DIAL BEN/342-5236.
Additional Information Phone Number (800) DIAL BEN/342-5236
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*,
Class R
$52
1.06%
[19],[20]
Expenses Paid, Amount $ 52
Expense Ratio, Percent 1.06%
Net Assets $ 3,957,629,597
Holdings Count | $ / shares 85 [21]
Investment Company Portfolio Turnover 16.42%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of April 30, 2025)
Total Net Assets
$3,957,629,597
Total Number of Portfolio Holdings*
85
Portfolio Turnover Rate
16.42%
[21]
Holdings [Text Block]
image
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R6  
Shareholder Report [Line Items]  
Fund Name Franklin Equity Income Fund
Class Name Class R6
Trading Symbol FEIQX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Franklin Equity Income Fund for the period November 1, 2024, to April 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 https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) DIAL BEN/342-5236.
Additional Information Phone Number (800) DIAL BEN/342-5236
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*,
Class R6
$24
0.49%
[22],[23]
Expenses Paid, Amount $ 24
Expense Ratio, Percent 0.49%
Net Assets $ 3,957,629,597
Holdings Count | $ / shares 85 [24]
Investment Company Portfolio Turnover 16.42%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of April 30, 2025)
Total Net Assets
$3,957,629,597
Total Number of Portfolio Holdings*
85
Portfolio Turnover Rate
16.42%
[24]
Holdings [Text Block]
image
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Advisor Class  
Shareholder Report [Line Items]  
Fund Name Franklin Equity Income Fund
Class Name Advisor Class
Trading Symbol FEIFX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Franklin Equity Income Fund for the period November 1, 2024, to April 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 https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) DIAL BEN/342-5236.
Additional Information Phone Number (800) DIAL BEN/342-5236
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*,
Advisor Class
$27
0.56%
[25],[26]
Expenses Paid, Amount $ 27
Expense Ratio, Percent 0.56%
Net Assets $ 3,957,629,597
Holdings Count | $ / shares 85 [27]
Investment Company Portfolio Turnover 16.42%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of April 30, 2025)
Total Net Assets
$3,957,629,597
Total Number of Portfolio Holdings*
85
Portfolio Turnover Rate
16.42%
[27]
Holdings [Text Block]
image
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class A  
Shareholder Report [Line Items]  
Fund Name Franklin Floating Rate Daily Access Fund
Class Name Class A
Trading Symbol FAFRX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Franklin Floating Rate Daily Access Fund for the period November 1, 2024, to April 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 https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) DIAL BEN/342-5236.
Additional Information Phone Number (800) DIAL BEN/342-5236
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*,
Class A
$46
0.93%
[28],[29]
Expenses Paid, Amount $ 46
Expense Ratio, Percent 0.93%
Net Assets $ 1,472,826,620
Holdings Count | $ / shares 293 [30]
Investment Company Portfolio Turnover 20.04%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of April 30, 2025)
Total Net Assets
$1,472,826,620
Total Number of Portfolio Holdings*
293
Portfolio Turnover Rate
20.04%
[30]
Holdings [Text Block]
image
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class C  
Shareholder Report [Line Items]  
Fund Name Franklin Floating Rate Daily Access Fund
Class Name Class C
Trading Symbol FCFRX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Franklin Floating Rate Daily Access Fund for the period November 1, 2024, to April 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 https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) DIAL BEN/342-5236.
Additional Information Phone Number (800) DIAL BEN/342-5236
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*,
Class C
$66
1.33%
[31],[32]
Expenses Paid, Amount $ 66
Expense Ratio, Percent 1.33%
Net Assets $ 1,472,826,620
Holdings Count | $ / shares 293 [33]
Investment Company Portfolio Turnover 20.04%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of April 30, 2025)
Total Net Assets
$1,472,826,620
Total Number of Portfolio Holdings*
293
Portfolio Turnover Rate
20.04%
[33]
Holdings [Text Block]
image
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R6  
Shareholder Report [Line Items]  
Fund Name Franklin Floating Rate Daily Access Fund
Class Name Class R6
Trading Symbol FFRDX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Franklin Floating Rate Daily Access Fund for the period November 1, 2024, to April 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 https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) DIAL BEN/342-5236.
Additional Information Phone Number (800) DIAL BEN/342-5236
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*,
Class R6
$30
0.60%
[34],[35]
Expenses Paid, Amount $ 30
Expense Ratio, Percent 0.60%
Net Assets $ 1,472,826,620
Holdings Count | $ / shares 293 [36]
Investment Company Portfolio Turnover 20.04%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of April 30, 2025)
Total Net Assets
$1,472,826,620
Total Number of Portfolio Holdings*
293
Portfolio Turnover Rate
20.04%
[36]
Holdings [Text Block]
image
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Advisor Class  
Shareholder Report [Line Items]  
Fund Name Franklin Floating Rate Daily Access Fund
Class Name Advisor Class
Trading Symbol FDAAX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Franklin Floating Rate Daily Access Fund for the period November 1, 2024, to April 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 https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) DIAL BEN/342-5236.
Additional Information Phone Number (800) DIAL BEN/342-5236
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*,
Advisor Class
$34
0.68%
[37],[38]
Expenses Paid, Amount $ 34
Expense Ratio, Percent 0.68%
Net Assets $ 1,472,826,620
Holdings Count | $ / shares 293 [39]
Investment Company Portfolio Turnover 20.04%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of April 30, 2025)
Total Net Assets
$1,472,826,620
Total Number of Portfolio Holdings*
293
Portfolio Turnover Rate
20.04%
[39]
Holdings [Text Block]
image
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R6  
Shareholder Report [Line Items]  
Fund Name Franklin Long Duration Credit Fund
Class Name Class R6
Trading Symbol FLDBX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Franklin Long Duration Credit Fund for the period November 1, 2024, to April 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 https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) DIAL BEN/342-5236.
Additional Information Phone Number (800) DIAL BEN/342-5236
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*,
Class R6
$6
0.13%
[40],[41]
Expenses Paid, Amount $ 6
Expense Ratio, Percent 0.13%
Net Assets $ 69,436,906
Holdings Count | $ / shares 327 [42]
Investment Company Portfolio Turnover 16.71%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of April 30, 2025)
Total Net Assets
$69,436,906
Total Number of Portfolio Holdings*
327
Portfolio Turnover Rate
16.71%
[42]
Holdings [Text Block]
image
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class A  
Shareholder Report [Line Items]  
Fund Name Franklin Low Duration Total Return Fund
Class Name Class A
Trading Symbol FLDAX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Franklin Low Duration Total Return Fund for the period November 1, 2024, to April 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 https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) DIAL BEN/342-5236.
Additional Information Phone Number (800) DIAL BEN/342-5236
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*,
Class A
$33
0.66%
[43],[44]
Expenses Paid, Amount $ 33
Expense Ratio, Percent 0.66%
Net Assets $ 1,963,820,717
Holdings Count | $ / shares 750 [45]
Investment Company Portfolio Turnover 35.55%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of April 30, 2025)
Total Net Assets
$1,963,820,717
Total Number of Portfolio Holdings*
750
Portfolio Turnover Rate
35.55%
[45]
Holdings [Text Block]
image
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class C  
Shareholder Report [Line Items]  
Fund Name Franklin Low Duration Total Return Fund
Class Name Class C
Trading Symbol FLDCX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Franklin Low Duration Total Return Fund for the period November 1, 2024, to April 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 https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) DIAL BEN/342-5236.
Additional Information Phone Number (800) DIAL BEN/342-5236
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*,
Class C
$53
1.06%
[46],[47]
Expenses Paid, Amount $ 53
Expense Ratio, Percent 1.06%
Net Assets $ 1,963,820,717
Holdings Count | $ / shares 750 [48]
Investment Company Portfolio Turnover 35.55%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of April 30, 2025)
Total Net Assets
$1,963,820,717
Total Number of Portfolio Holdings*
750
Portfolio Turnover Rate
35.55%
[48]
Holdings [Text Block]
image
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R  
Shareholder Report [Line Items]  
Fund Name Franklin Low Duration Total Return Fund
Class Name Class R
Trading Symbol FLDRX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Franklin Low Duration Total Return Fund for the period November 1, 2024, to April 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 https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) DIAL BEN/342-5236.
Additional Information Phone Number (800) DIAL BEN/342-5236
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*,
Class R
$46
0.91%
[49],[50]
Expenses Paid, Amount $ 46
Expense Ratio, Percent 0.91%
Net Assets $ 1,963,820,717
Holdings Count | $ / shares 750 [51]
Investment Company Portfolio Turnover 35.55%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of April 30, 2025)
Total Net Assets
$1,963,820,717
Total Number of Portfolio Holdings*
750
Portfolio Turnover Rate
35.55%
[51]
Holdings [Text Block]
image
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R6  
Shareholder Report [Line Items]  
Fund Name Franklin Low Duration Total Return Fund
Class Name Class R6
Trading Symbol FLRRX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Franklin Low Duration Total Return Fund for the period November 1, 2024, to April 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 https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) DIAL BEN/342-5236.
Additional Information Phone Number (800) DIAL BEN/342-5236
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*,
Class R6
$15
0.30%
[52],[53]
Expenses Paid, Amount $ 15
Expense Ratio, Percent 0.30%
Net Assets $ 1,963,820,717
Holdings Count | $ / shares 750 [54]
Investment Company Portfolio Turnover 35.55%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of April 30, 2025)
Total Net Assets
$1,963,820,717
Total Number of Portfolio Holdings*
750
Portfolio Turnover Rate
35.55%
[54]
Holdings [Text Block]
image
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Advisor Class  
Shareholder Report [Line Items]  
Fund Name Franklin Low Duration Total Return Fund
Class Name Advisor Class
Trading Symbol FLDZX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Franklin Low Duration Total Return Fund for the period November 1, 2024, to April 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 https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) DIAL BEN/342-5236.
Additional Information Phone Number (800) DIAL BEN/342-5236
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*,
Advisor Class
$21
0.41%
[55],[56]
Expenses Paid, Amount $ 21
Expense Ratio, Percent 0.41%
Net Assets $ 1,963,820,717
Holdings Count | $ / shares 750 [57]
Investment Company Portfolio Turnover 35.55%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of April 30, 2025)
Total Net Assets
$1,963,820,717
Total Number of Portfolio Holdings*
750
Portfolio Turnover Rate
35.55%
[57]
Holdings [Text Block]
image
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class A  
Shareholder Report [Line Items]  
Fund Name Franklin Low Duration U.S. Government Securities Fund
Class Name Class A
Trading Symbol FISAX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Franklin Low Duration U.S. Government Securities Fund for the period November 1, 2024, to April 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 https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) DIAL BEN/342-5236.
Additional Information Phone Number (800) DIAL BEN/342-5236
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*,
Class A
$42
0.83%
[58],[59]
Expenses Paid, Amount $ 42
Expense Ratio, Percent 0.83%
Net Assets $ 396,564,288
Holdings Count | $ / shares 1,237 [60]
Investment Company Portfolio Turnover 8.34%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of April 30, 2025)
Total Net Assets
$396,564,288
Total Number of Portfolio Holdings*
1,237
Portfolio Turnover Rate
8.34%
[60]
Holdings [Text Block]
image
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class A1  
Shareholder Report [Line Items]  
Fund Name Franklin Low Duration U.S. Government Securities Fund
Class Name Class A1
Trading Symbol FAUGX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Franklin Low Duration U.S. Government Securities Fund for the period November 1, 2024, to April 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 https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) DIAL BEN/342-5236.
Additional Information Phone Number (800) DIAL BEN/342-5236
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*,
Class A1
$34
0.68%
[61],[62]
Expenses Paid, Amount $ 34
Expense Ratio, Percent 0.68%
Net Assets $ 396,564,288
Holdings Count | $ / shares 1,237 [63]
Investment Company Portfolio Turnover 8.34%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of April 30, 2025)
Total Net Assets
$396,564,288
Total Number of Portfolio Holdings*
1,237
Portfolio Turnover Rate
8.34%
[63]
Holdings [Text Block]
image
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class C  
Shareholder Report [Line Items]  
Fund Name Franklin Low Duration U.S. Government Securities Fund
Class Name Class C
Trading Symbol FCSCX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Franklin Low Duration U.S. Government Securities Fund for the period November 1, 2024, to April 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 https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) DIAL BEN/342-5236.
Additional Information Phone Number (800) DIAL BEN/342-5236
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*,
Class C
$62
1.23%
[64],[65]
Expenses Paid, Amount $ 62
Expense Ratio, Percent 1.23%
Net Assets $ 396,564,288
Holdings Count | $ / shares 1,237 [66]
Investment Company Portfolio Turnover 8.34%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of April 30, 2025)
Total Net Assets
$396,564,288
Total Number of Portfolio Holdings*
1,237
Portfolio Turnover Rate
8.34%
[66]
Holdings [Text Block]
image
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R6  
Shareholder Report [Line Items]  
Fund Name Franklin Low Duration U.S. Government Securities Fund
Class Name Class R6
Trading Symbol FAURX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Franklin Low Duration U.S. Government Securities Fund for the period November 1, 2024, to April 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 https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) DIAL BEN/342-5236.
Additional Information Phone Number (800) DIAL BEN/342-5236
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*,
Class R6
$28
0.55%
[67],[68]
Expenses Paid, Amount $ 28
Expense Ratio, Percent 0.55%
Net Assets $ 396,564,288
Holdings Count | $ / shares 1,237 [69]
Investment Company Portfolio Turnover 8.34%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of April 30, 2025)
Total Net Assets
$396,564,288
Total Number of Portfolio Holdings*
1,237
Portfolio Turnover Rate
8.34%
[69]
Holdings [Text Block]
image
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Advisor Class  
Shareholder Report [Line Items]  
Fund Name Franklin Low Duration U.S. Government Securities Fund
Class Name Advisor Class
Trading Symbol FAUZX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Franklin Low Duration U.S. Government Securities Fund for the period November 1, 2024, to April 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 https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) DIAL BEN/342-5236.
Additional Information Phone Number (800) DIAL BEN/342-5236
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*,
Advisor Class
$29
0.58%
[70],[71]
Expenses Paid, Amount $ 29
Expense Ratio, Percent 0.58%
Net Assets $ 396,564,288
Holdings Count | $ / shares 1,237 [72]
Investment Company Portfolio Turnover 8.34%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of April 30, 2025)
Total Net Assets
$396,564,288
Total Number of Portfolio Holdings*
1,237
Portfolio Turnover Rate
8.34%
[72]
Holdings [Text Block]
image
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class A  
Shareholder Report [Line Items]  
Fund Name Franklin Managed Income Fund
Class Name Class A
Trading Symbol FBLAX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Franklin Managed Income Fund for the period November 1, 2024, to April 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 https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) DIAL BEN/342-5236.
Additional Information Phone Number (800) DIAL BEN/342-5236
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*,
Class A
$44
0.90%
[73],[74]
Expenses Paid, Amount $ 44
Expense Ratio, Percent 0.90%
Net Assets $ 3,257,960,700
Holdings Count | $ / shares 165 [75]
Investment Company Portfolio Turnover 28.37%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of April 30, 2025)
Total Net Assets
$3,257,960,700
Total Number of Portfolio Holdings*
165
Portfolio Turnover Rate
28.37%
[75]
Holdings [Text Block]
image
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class C  
Shareholder Report [Line Items]  
Fund Name Franklin Managed Income Fund
Class Name Class C
Trading Symbol FBMCX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Franklin Managed Income Fund for the period November 1, 2024, to April 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 https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) DIAL BEN/342-5236.
Additional Information Phone Number (800) DIAL BEN/342-5236
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*,
Class C
$81
1.65%
[76],[77]
Expenses Paid, Amount $ 81
Expense Ratio, Percent 1.65%
Net Assets $ 3,257,960,700
Holdings Count | $ / shares 165 [78]
Investment Company Portfolio Turnover 28.37%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of April 30, 2025)
Total Net Assets
$3,257,960,700
Total Number of Portfolio Holdings*
165
Portfolio Turnover Rate
28.37%
[78]
Holdings [Text Block]
image
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R  
Shareholder Report [Line Items]  
Fund Name Franklin Managed Income Fund
Class Name Class R
Trading Symbol FBFQX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Franklin Managed Income Fund for the period November 1, 2024, to April 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 https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) DIAL BEN/342-5236.
Additional Information Phone Number (800) DIAL BEN/342-5236
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*,
Class R
$57
1.15%
[79],[80]
Expenses Paid, Amount $ 57
Expense Ratio, Percent 1.15%
Net Assets $ 3,257,960,700
Holdings Count | $ / shares 165 [81]
Investment Company Portfolio Turnover 28.37%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of April 30, 2025)
Total Net Assets
$3,257,960,700
Total Number of Portfolio Holdings*
165
Portfolio Turnover Rate
28.37%
[81]
Holdings [Text Block]
image
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R6  
Shareholder Report [Line Items]  
Fund Name Franklin Managed Income Fund
Class Name Class R6
Trading Symbol FBFRX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Franklin Managed Income Fund for the period November 1, 2024, to April 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 https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) DIAL BEN/342-5236.
Additional Information Phone Number (800) DIAL BEN/342-5236
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*,
Class R6
$29
0.59%
[82],[83]
Expenses Paid, Amount $ 29
Expense Ratio, Percent 0.59%
Net Assets $ 3,257,960,700
Holdings Count | $ / shares 165 [84]
Investment Company Portfolio Turnover 28.37%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of April 30, 2025)
Total Net Assets
$3,257,960,700
Total Number of Portfolio Holdings*
165
Portfolio Turnover Rate
28.37%
[84]
Holdings [Text Block]
image
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Advisor Class  
Shareholder Report [Line Items]  
Fund Name Franklin Managed Income Fund
Class Name Advisor Class
Trading Symbol FBFZX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Franklin Managed Income Fund for the period November 1, 2024, to April 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 https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) DIAL BEN/342-5236.
Additional Information Phone Number (800) DIAL BEN/342-5236
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*,
Advisor Class
$32
0.65%
[85],[86]
Expenses Paid, Amount $ 32
Expense Ratio, Percent 0.65%
Net Assets $ 3,257,960,700
Holdings Count | $ / shares 165 [87]
Investment Company Portfolio Turnover 28.37%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of April 30, 2025)
Total Net Assets
$3,257,960,700
Total Number of Portfolio Holdings*
165
Portfolio Turnover Rate
28.37%
[87]
Holdings [Text Block]
image
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class A  
Shareholder Report [Line Items]  
Fund Name Franklin Total Return Fund
Class Name Class A
Trading Symbol FKBAX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Franklin Total Return Fund for the period November 1, 2024, to April 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 https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) DIAL BEN/342-5236.
Additional Information Phone Number (800) DIAL BEN/342-5236
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*,
Class A
$41
0.82%
[88],[89]
Expenses Paid, Amount $ 41
Expense Ratio, Percent 0.82%
Net Assets $ 3,069,248,358
Holdings Count | $ / shares 849 [90]
Investment Company Portfolio Turnover 106.85%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of April 30, 2025)
Total Net Assets
$3,069,248,358
Total Number of Portfolio Holdings*
849
Portfolio Turnover Rate
106.85%
[90]
Holdings [Text Block]
image
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class C  
Shareholder Report [Line Items]  
Fund Name Franklin Total Return Fund
Class Name Class C
Trading Symbol FCTLX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Franklin Total Return Fund for the period November 1, 2024, to April 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 https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) DIAL BEN/342-5236.
Additional Information Phone Number (800) DIAL BEN/342-5236
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*,
Class C
$61
1.22%
[91],[92]
Expenses Paid, Amount $ 61
Expense Ratio, Percent 1.22%
Net Assets $ 3,069,248,358
Holdings Count | $ / shares 849 [93]
Investment Company Portfolio Turnover 106.85%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of April 30, 2025)
Total Net Assets
$3,069,248,358
Total Number of Portfolio Holdings*
849
Portfolio Turnover Rate
106.85%
[93]
Holdings [Text Block]
image
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R  
Shareholder Report [Line Items]  
Fund Name Franklin Total Return Fund
Class Name Class R
Trading Symbol FTRRX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Franklin Total Return Fund for the period November 1, 2024, to April 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 https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) DIAL BEN/342-5236.
Additional Information Phone Number (800) DIAL BEN/342-5236
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*,
Class R
$54
1.07%
[94],[95]
Expenses Paid, Amount $ 54
Expense Ratio, Percent 1.07%
Net Assets $ 3,069,248,358
Holdings Count | $ / shares 849 [96]
Investment Company Portfolio Turnover 106.85%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of April 30, 2025)
Total Net Assets
$3,069,248,358
Total Number of Portfolio Holdings*
849
Portfolio Turnover Rate
106.85%
[96]
Holdings [Text Block]
image
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R6  
Shareholder Report [Line Items]  
Fund Name Franklin Total Return Fund
Class Name Class R6
Trading Symbol FRERX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Franklin Total Return Fund for the period November 1, 2024, to April 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 https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) DIAL BEN/342-5236.
Additional Information Phone Number (800) DIAL BEN/342-5236
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*,
Class R6
$23
0.45%
[97],[98]
Expenses Paid, Amount $ 23
Expense Ratio, Percent 0.45%
Net Assets $ 3,069,248,358
Holdings Count | $ / shares 849 [99]
Investment Company Portfolio Turnover 106.85%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of April 30, 2025)
Total Net Assets
$3,069,248,358
Total Number of Portfolio Holdings*
849
Portfolio Turnover Rate
106.85%
[99]
Holdings [Text Block]
image
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Advisor Class  
Shareholder Report [Line Items]  
Fund Name Franklin Total Return Fund
Class Name Advisor Class
Trading Symbol FBDAX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Franklin Total Return Fund for the period November 1, 2024, to April 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 https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) DIAL BEN/342-5236.
Additional Information Phone Number (800) DIAL BEN/342-5236
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*,
Advisor Class
$28
0.56%
[100],[101]
Expenses Paid, Amount $ 28
Expense Ratio, Percent 0.56%
Net Assets $ 3,069,248,358
Holdings Count | $ / shares 849 [102]
Investment Company Portfolio Turnover 106.85%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of April 30, 2025)
Total Net Assets
$3,069,248,358
Total Number of Portfolio Holdings*
849
Portfolio Turnover Rate
106.85%
[102]
Holdings [Text Block]
image
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
[1]
* Reflects fee waivers and/or expense reimbursements, without which expenses would have been higher.
[2]
Annualized.
[3]
* Does not include derivatives, except purchased options, if any.  
[4]
* Reflects fee waivers and/or expense reimbursements, without which expenses would have been higher.
[5]
Annualized.
[6]
* Does not include derivatives, except purchased options, if any.  
[7]
* Reflects fee waivers and/or expense reimbursements, without which expenses would have been higher.
[8]
Annualized.
[9]
* Does not include derivatives, except purchased options, if any.  
[10]
* Reflects fee waivers and/or expense reimbursements, without which expenses would have been higher.
[11]
Annualized.
[12]
* Does not include derivatives, except purchased options, if any.  
[13]
* Reflects fee waivers and/or expense reimbursements, without which expenses would have been higher.
[14]
Annualized.
[15]
* Does not include derivatives, except purchased options, if any.  
[16]
* Reflects fee waivers and/or expense reimbursements, without which expenses would have been higher.
[17]
Annualized.
[18]
* Does not include derivatives, except purchased options, if any.  
[19]
* Reflects fee waivers and/or expense reimbursements, without which expenses would have been higher.
[20]
Annualized.
[21]
* Does not include derivatives, except purchased options, if any.  
[22]
* Reflects fee waivers and/or expense reimbursements, without which expenses would have been higher.
[23]
Annualized.
[24]
* Does not include derivatives, except purchased options, if any.  
[25]
* Reflects fee waivers and/or expense reimbursements, without which expenses would have been higher.
[26]
Annualized.
[27]
* Does not include derivatives, except purchased options, if any.  
[28]
* Reflects fee waivers and/or expense reimbursements, without which expenses would have been higher.
[29]
Annualized.
[30]
* Does not include derivatives, except purchased options, if any.  
[31]
* Reflects fee waivers and/or expense reimbursements, without which expenses would have been higher.
[32]
Annualized.
[33]
* Does not include derivatives, except purchased options, if any.  
[34]
* Reflects fee waivers and/or expense reimbursements, without which expenses would have been higher.
[35]
Annualized.
[36]
* Does not include derivatives, except purchased options, if any.  
[37]
* Reflects fee waivers and/or expense reimbursements, without which expenses would have been higher.
[38]
Annualized.
[39]
* Does not include derivatives, except purchased options, if any.  
[40]
* Reflects fee waivers and/or expense reimbursements, without which expenses would have been higher.
[41]
Annualized.
[42]
* Does not include derivatives, except purchased options, if any.  
[43]
* Reflects fee waivers and/or expense reimbursements, without which expenses would have been higher.
[44]
Annualized.
[45]
* Does not include derivatives, except purchased options, if any.  
[46]
* Reflects fee waivers and/or expense reimbursements, without which expenses would have been higher.
[47]
Annualized.
[48]
* Does not include derivatives, except purchased options, if any.  
[49]
* Reflects fee waivers and/or expense reimbursements, without which expenses would have been higher.
[50]
Annualized.
[51]
* Does not include derivatives, except purchased options, if any.  
[52]
* Reflects fee waivers and/or expense reimbursements, without which expenses would have been higher.
[53]
Annualized.
[54]
* Does not include derivatives, except purchased options, if any.  
[55]
* Reflects fee waivers and/or expense reimbursements, without which expenses would have been higher.
[56]
Annualized.
[57]
* Does not include derivatives, except purchased options, if any.  
[58]
* Reflects fee waivers and/or expense reimbursements, without which expenses would have been higher.
[59]
Annualized.
[60]
* Does not include derivatives, except purchased options, if any.  
[61]
* Reflects fee waivers and/or expense reimbursements, without which expenses would have been higher.
[62]
Annualized.
[63]
* Does not include derivatives, except purchased options, if any.  
[64]
* Reflects fee waivers and/or expense reimbursements, without which expenses would have been higher.
[65]
Annualized.
[66]
* Does not include derivatives, except purchased options, if any.  
[67]
* Reflects fee waivers and/or expense reimbursements, without which expenses would have been higher.
[68]
Annualized.
[69]
* Does not include derivatives, except purchased options, if any.  
[70]
* Reflects fee waivers and/or expense reimbursements, without which expenses would have been higher.
[71]
Annualized.
[72]
* Does not include derivatives, except purchased options, if any.  
[73]
* Reflects fee waivers and/or expense reimbursements, without which expenses would have been higher.
[74]
Annualized.
[75]
* Does not include derivatives, except purchased options, if any.  
[76]
* Reflects fee waivers and/or expense reimbursements, without which expenses would have been higher.
[77]
Annualized.
[78]
* Does not include derivatives, except purchased options, if any.  
[79]
* Reflects fee waivers and/or expense reimbursements, without which expenses would have been higher.
[80]
Annualized.
[81]
* Does not include derivatives, except purchased options, if any.  
[82]
* Reflects fee waivers and/or expense reimbursements, without which expenses would have been higher.
[83]
Annualized.
[84]
* Does not include derivatives, except purchased options, if any.  
[85]
* Reflects fee waivers and/or expense reimbursements, without which expenses would have been higher.
[86]
Annualized.
[87]
* Does not include derivatives, except purchased options, if any.  
[88]
* Reflects fee waivers and/or expense reimbursements, without which expenses would have been higher.
[89]
Annualized.
[90]
* Does not include derivatives, except purchased options, if any.  
[91]
* Reflects fee waivers and/or expense reimbursements, without which expenses would have been higher.
[92]
Annualized.
[93]
* Does not include derivatives, except purchased options, if any.  
[94]
* Reflects fee waivers and/or expense reimbursements, without which expenses would have been higher.
[95]
Annualized.
[96]
* Does not include derivatives, except purchased options, if any.  
[97]
* Reflects fee waivers and/or expense reimbursements, without which expenses would have been higher.
[98]
Annualized.
[99]
* Does not include derivatives, except purchased options, if any.  
[100]
* Reflects fee waivers and/or expense reimbursements, without which expenses would have been higher.
[101]
Annualized.
[102]
* Does not include derivatives, except purchased options, if any.