| Label | Element | Value |
|---|---|---|
| Franklin International Dividend Booster Index ETF | Common Stocks [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 98.20% |
| Franklin International Dividend Booster Index ETF | Preferred Stocks [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 1.80% |
| Franklin International Dividend Booster Index ETF | Short-Term Investments [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 0.00% |