Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001193125-20-179112-index-headers.html | 2020-06-25 16:35:45 | |
| 0001193125-20-179112-index.html | 2020-06-25 16:35:45 | |
| 0001193125-20-179112.txt | 2020-06-25 16:35:45 | |
 0001193125-20-179112-xbrl.zip | 32746 | 2020-06-25 16:35:45 |
| bf4-20200608.xml | 146918 | 2020-06-25 16:35:45 |
| bf4-20200608.xsd | 14710 | 2020-06-25 16:35:45 |
| bf4-20200608_def.xml | 108725 | 2020-06-25 16:35:45 |
| bf4-20200608_lab.xml | 201759 | 2020-06-25 16:35:45 |
| bf4-20200608_pre.xml | 99069 | 2020-06-25 16:35:45 |
| d936403d497.htm | 57073 | 2020-06-25 16:35:45 |
| FilingSummary.xml | 3394 | 2020-06-25 16:35:45 |
| Financial_Report.xlsx | 10804 | 2020-06-25 16:35:45 |
 g940111g01z72.jpg | 4053 | 2020-06-25 16:35:45 |
| R1.htm | 18248 | 2020-06-25 16:35:45 |
| R2.htm | 10351 | 2020-06-25 16:35:45 |
| R3.htm | 206428 | 2020-06-25 16:35:45 |
| R4.htm | 7481 | 2020-06-25 16:35:45 |
| report.css | 2767 | 2020-06-25 16:35:45 |
| Show.js | 1085 | 2020-06-25 16:35:45 |