Shareholder Report, Line Graph (Details) LMA0100_ClearBridge Growth Fund_Class FI_TSR Annual {Class FI} - USD ($) |
12 Months Ended | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Aug. 31, 2025 |
Aug. 31, 2024 |
Aug. 31, 2023 |
Aug. 31, 2022 |
Aug. 31, 2021 |
Aug. 31, 2020 |
Aug. 31, 2019 |
Aug. 31, 2018 |
Aug. 31, 2017 |
Aug. 31, 2016 |
Aug. 31, 2026 |
|
| Class FI | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | Class FI | ||||||||||
| Accumulated Value | $ 19,981 | $ 16,843 | $ 14,474 | $ 13,486 | $ 18,083 | $ 13,599 | $ 11,937 | $ 13,004 | $ 11,345 | $ 10,000 | $ 21,082 |
| Russell 3000 Index [Member] | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | Russell 3000 Index | ||||||||||
| Accumulated Value | 33,220 | 28,677 | 22,734 | 19,810 | 22,845 | 17,171 | 14,139 | 13,956 | 11,606 | 10,000 | $ 39,898 |
| Russell Midcap Growth Index [Member] | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | Russell Midcap Growth Index | ||||||||||
| Accumulated Value | $ 31,606 | $ 25,000 | $ 20,997 | $ 18,581 | $ 25,346 | $ 18,751 | $ 15,176 | $ 14,322 | $ 11,452 | $ 10,000 | $ 31,238 |