Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001193125-19-245342-index-headers.html | 2019-09-16 07:04:09 | |
| 0001193125-19-245342-index.html | 2019-09-16 07:04:09 | |
| 0001193125-19-245342.txt | 2019-09-16 07:04:09 | |
 0001193125-19-245342-xbrl.zip | 13149 | 2019-09-16 07:04:09 |
| btu-20190916.xsd | 3081 | 2019-09-16 07:04:09 |
| btu-20190916_lab.xml | 17373 | 2019-09-16 07:04:09 |
| btu-20190916_pre.xml | 10961 | 2019-09-16 07:04:09 |
| d803255d8k.htm | 34992 | 2019-09-16 07:04:09 |
| d803255d8k_htm.xml | 3276 | 2019-09-16 07:04:09 |
| d803255dex991.htm | 7435 | 2019-09-16 07:04:09 |
| FilingSummary.xml | 1729 | 2019-09-16 07:04:09 |
| Financial_Report.xlsx | 5787 | 2019-09-16 07:04:09 |
 g803255g0916082044972.jpg | 3080 | 2019-09-16 07:04:09 |
| MetaLinks.json | 18360 | 2019-09-16 07:04:09 |
| R1.htm | 38615 | 2019-09-16 07:04:09 |
| report.css | 2767 | 2019-09-16 07:04:09 |
| Show.js | 1085 | 2019-09-16 07:04:09 |