Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001064728-16-000220-index-headers.html | 2016-11-03 10:13:16 | |
| 0001064728-16-000220-index.html | 2016-11-03 10:13:16 | |
| 0001064728-16-000220.txt | 2016-11-03 10:13:16 | |
 0001064728-16-000220-xbrl.zip | 525976 | 2016-11-03 10:13:16 |
| btu-20160930.xml | 5777348 | 2016-11-03 10:13:16 |
| btu-20160930.xsd | 116937 | 2016-11-03 10:13:16 |
| btu-20160930_cal.xml | 118249 | 2016-11-03 10:13:16 |
| btu-20160930_def.xml | 829141 | 2016-11-03 10:13:16 |
| btu-20160930_lab.xml | 1312240 | 2016-11-03 10:13:16 |
| btu-20160930_pre.xml | 897602 | 2016-11-03 10:13:16 |
| btu_2016093010q.htm | 3588706 | 2016-11-03 10:13:16 |
| btu_20160930xex311.htm | 13923 | 2016-11-03 10:13:16 |
| btu_20160930xex312.htm | 13945 | 2016-11-03 10:13:16 |
| btu_20160930xex321.htm | 6618 | 2016-11-03 10:13:16 |
| btu_20160930xex322.htm | 6639 | 2016-11-03 10:13:16 |
| btu_20160930xex95.htm | 357148 | 2016-11-03 10:13:16 |
| FilingSummary.xml | 56516 | 2016-11-03 10:13:16 |
| Financial_Report.xlsx | 163517 | 2016-11-03 10:13:16 |
 peabody20150930a02a01a04.gif | 4153 | 2016-11-03 10:13:16 |
| R1.htm | 19981 | 2016-11-03 10:13:16 |
| R10.htm | 40931 | 2016-11-03 10:13:16 |
| R11.htm | 39310 | 2016-11-03 10:13:16 |
| R12.htm | 20492 | 2016-11-03 10:13:16 |
| R13.htm | 35111 | 2016-11-03 10:13:16 |
| R14.htm | 46725 | 2016-11-03 10:13:16 |
| R15.htm | 16582 | 2016-11-03 10:13:16 |
| R16.htm | 171531 | 2016-11-03 10:13:16 |
| R17.htm | 178073 | 2016-11-03 10:13:16 |
| R18.htm | 20315 | 2016-11-03 10:13:16 |
| R19.htm | 17881 | 2016-11-03 10:13:16 |
| R2.htm | 83731 | 2016-11-03 10:13:16 |
| R20.htm | 7992 | 2016-11-03 10:13:16 |
| R21.htm | 71286 | 2016-11-03 10:13:16 |
| R22.htm | 51848 | 2016-11-03 10:13:16 |
| R23.htm | 161880 | 2016-11-03 10:13:16 |
| R24.htm | 15250 | 2016-11-03 10:13:16 |
| R25.htm | 66007 | 2016-11-03 10:13:16 |
| R26.htm | 56010 | 2016-11-03 10:13:16 |
| R27.htm | 33735 | 2016-11-03 10:13:16 |
| R28.htm | 20843 | 2016-11-03 10:13:16 |
| R29.htm | 24892 | 2016-11-03 10:13:16 |
| R3.htm | 95412 | 2016-11-03 10:13:16 |
| R30.htm | 133682 | 2016-11-03 10:13:16 |
| R31.htm | 2002937 | 2016-11-03 10:13:16 |
| R32.htm | 6947 | 2016-11-03 10:13:16 |
| R33.htm | 9924 | 2016-11-03 10:13:16 |
| R34.htm | 9551 | 2016-11-03 10:13:16 |
| R35.htm | 23702 | 2016-11-03 10:13:16 |
| R36.htm | 20679 | 2016-11-03 10:13:16 |
| R37.htm | 19362 | 2016-11-03 10:13:16 |
| R38.htm | 26421 | 2016-11-03 10:13:16 |
| R39.htm | 44006 | 2016-11-03 10:13:16 |
| R4.htm | 35548 | 2016-11-03 10:13:16 |
| R40.htm | 14667 | 2016-11-03 10:13:16 |
| R41.htm | 169012 | 2016-11-03 10:13:16 |
| R42.htm | 172718 | 2016-11-03 10:13:16 |
| R43.htm | 14153 | 2016-11-03 10:13:16 |
| R44.htm | 17186 | 2016-11-03 10:13:16 |
| R45.htm | 33478 | 2016-11-03 10:13:16 |
| R46.htm | 52729 | 2016-11-03 10:13:16 |
| R47.htm | 160999 | 2016-11-03 10:13:16 |
| R48.htm | 59583 | 2016-11-03 10:13:16 |
| R49.htm | 37757 | 2016-11-03 10:13:16 |
| R5.htm | 121647 | 2016-11-03 10:13:16 |
| R50.htm | 131328 | 2016-11-03 10:13:16 |
| R51.htm | 2241018 | 2016-11-03 10:13:16 |
| R52.htm | 32081 | 2016-11-03 10:13:16 |
| R53.htm | 22770 | 2016-11-03 10:13:16 |
| R54.htm | 14784 | 2016-11-03 10:13:16 |
| R55.htm | 31274 | 2016-11-03 10:13:16 |
| R56.htm | 41733 | 2016-11-03 10:13:16 |
| R57.htm | 44565 | 2016-11-03 10:13:16 |
| R58.htm | 10662 | 2016-11-03 10:13:16 |
| R59.htm | 6469 | 2016-11-03 10:13:16 |
| R6.htm | 34047 | 2016-11-03 10:13:16 |
| R60.htm | 13615 | 2016-11-03 10:13:16 |
| R61.htm | 63911 | 2016-11-03 10:13:16 |
| R62.htm | 23232 | 2016-11-03 10:13:16 |
| R63.htm | 47646 | 2016-11-03 10:13:16 |
| R64.htm | 10382 | 2016-11-03 10:13:16 |
| R65.htm | 55804 | 2016-11-03 10:13:16 |
| R66.htm | 76749 | 2016-11-03 10:13:16 |
| R67.htm | 56153 | 2016-11-03 10:13:16 |
| R68.htm | 29950 | 2016-11-03 10:13:16 |
| R69.htm | 14248 | 2016-11-03 10:13:16 |
| R7.htm | 36576 | 2016-11-03 10:13:16 |
| R70.htm | 7496 | 2016-11-03 10:13:16 |
| R71.htm | 42123 | 2016-11-03 10:13:16 |
| R72.htm | 133282 | 2016-11-03 10:13:16 |
| R73.htm | 36073 | 2016-11-03 10:13:16 |
| R74.htm | 115449 | 2016-11-03 10:13:16 |
| R75.htm | 42494 | 2016-11-03 10:13:16 |
| R76.htm | 55595 | 2016-11-03 10:13:16 |
| R77.htm | 153019 | 2016-11-03 10:13:16 |
| R78.htm | 6198 | 2016-11-03 10:13:16 |
| R79.htm | 56212 | 2016-11-03 10:13:16 |
| R8.htm | 8930 | 2016-11-03 10:13:16 |
| R80.htm | 58670 | 2016-11-03 10:13:16 |
| R81.htm | 73465 | 2016-11-03 10:13:16 |
| R82.htm | 123640 | 2016-11-03 10:13:16 |
| R83.htm | 147666 | 2016-11-03 10:13:16 |
| R84.htm | 110729 | 2016-11-03 10:13:16 |
| R85.htm | 104796 | 2016-11-03 10:13:16 |
| R86.htm | 125534 | 2016-11-03 10:13:16 |
| R87.htm | 81795 | 2016-11-03 10:13:16 |
| R88.htm | 2879 | 2016-11-03 10:13:16 |
| R89.htm | 11556 | 2016-11-03 10:13:16 |
| R9.htm | 8953 | 2016-11-03 10:13:16 |
| report.css | 2768 | 2016-11-03 10:13:16 |
| Show.js | 1411 | 2016-11-03 10:13:16 |