Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001193125-20-050125-index-headers.html | 2020-02-26 16:31:45 | |
| 0001193125-20-050125-index.html | 2020-02-26 16:31:45 | |
| 0001193125-20-050125.txt | 2020-02-26 16:31:45 | |
 0001193125-20-050125-xbrl.zip | 8742 | 2020-02-26 16:31:45 |
| btu-20200220.xsd | 3081 | 2020-02-26 16:31:45 |
| btu-20200220_lab.xml | 17373 | 2020-02-26 16:31:45 |
| btu-20200220_pre.xml | 10961 | 2020-02-26 16:31:45 |
| d892974d8k.htm | 27581 | 2020-02-26 16:31:45 |
| d892974d8k_htm.xml | 3276 | 2020-02-26 16:31:45 |
| FilingSummary.xml | 1699 | 2020-02-26 16:31:45 |
| Financial_Report.xlsx | 5786 | 2020-02-26 16:31:45 |
| MetaLinks.json | 18330 | 2020-02-26 16:31:45 |
| R1.htm | 38620 | 2020-02-26 16:31:45 |
| report.css | 2766 | 2020-02-26 16:31:45 |
| Show.js | 1085 | 2020-02-26 16:31:45 |