Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001193125-20-069967-index-headers.html | 2020-03-11 11:40:13 | |
| 0001193125-20-069967-index.html | 2020-03-11 11:40:13 | |
| 0001193125-20-069967.txt | 2020-03-11 11:40:13 | |
 0001193125-20-069967-xbrl.zip | 25352 | 2020-03-11 11:40:13 |
| bf1-20200220.xml | 32065 | 2020-03-11 11:40:13 |
| bf1-20200220.xsd | 5267 | 2020-03-11 11:40:13 |
| bf1-20200220_def.xml | 93744 | 2020-03-11 11:40:13 |
| bf1-20200220_lab.xml | 136583 | 2020-03-11 11:40:13 |
| bf1-20200220_pre.xml | 81426 | 2020-03-11 11:40:13 |
| d885923d497.htm | 6539 | 2020-03-11 11:40:13 |
| FilingSummary.xml | 3478 | 2020-03-11 11:40:13 |
| Financial_Report.xlsx | 8893 | 2020-03-11 11:40:13 |
 g885923g0311070239539.jpg | 2107 | 2020-03-11 11:40:13 |
| R1.htm | 18241 | 2020-03-11 11:40:13 |
| R2.htm | 11263 | 2020-03-11 11:40:13 |
| R3.htm | 39815 | 2020-03-11 11:40:13 |
| R4.htm | 7476 | 2020-03-11 11:40:13 |
| report.css | 2767 | 2020-03-11 11:40:13 |
| Show.js | 1085 | 2020-03-11 11:40:13 |