Shareholder Report, Line Graph (Details) 74300008300_Franklin Core Plus Bond Fund_Advisor Class_TSR Annual {Advisor Class} - USD ($) |
12 Months Ended | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Apr. 30, 2025 |
Apr. 30, 2024 |
Apr. 30, 2023 |
Apr. 30, 2022 |
Apr. 30, 2021 |
Apr. 30, 2020 |
Apr. 30, 2019 |
Apr. 30, 2018 |
Apr. 30, 2017 |
Apr. 30, 2016 |
Apr. 30, 2026 |
|
| Advisor Class | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | Advisor Class | ||||||||||
| Accumulated Value | $ 12,863 | $ 11,994 | $ 11,603 | $ 11,490 | $ 12,202 | $ 10,768 | $ 11,392 | $ 10,861 | $ 10,776 | $ 10,000 | $ 13,510 |
| Bloomberg U.S. Aggregate Index [Member] | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | Bloomberg U.S. Aggregate Index | ||||||||||
| Accumulated Value | $ 11,343 | $ 10,500 | $ 10,657 | $ 10,703 | $ 11,698 | $ 11,730 | $ 10,582 | $ 10,051 | $ 10,083 | $ 10,000 | $ 11,803 |