Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001193125-17-356426-index-headers.html | 2017-11-30 08:41:29 | |
| 0001193125-17-356426-index.html | 2017-11-30 08:41:29 | |
| 0001193125-17-356426.txt | 2017-11-30 08:41:29 | |
 0001193125-17-356426-xbrl.zip | 111680 | 2017-11-30 08:41:29 |
| bks-20171028.xml | 582977 | 2017-11-30 08:41:29 |
| bks-20171028.xsd | 44500 | 2017-11-30 08:41:29 |
| bks-20171028_cal.xml | 56866 | 2017-11-30 08:41:29 |
| bks-20171028_def.xml | 259764 | 2017-11-30 08:41:29 |
| bks-20171028_lab.xml | 336944 | 2017-11-30 08:41:29 |
| bks-20171028_pre.xml | 305336 | 2017-11-30 08:41:29 |
| d487286d10q.htm | 520178 | 2017-11-30 08:41:29 |
| d487286dex31.htm | 510881 | 2017-11-30 08:41:29 |
| d487286dex311.htm | 10261 | 2017-11-30 08:41:29 |
| d487286dex312.htm | 10273 | 2017-11-30 08:41:29 |
| d487286dex32.htm | 74490 | 2017-11-30 08:41:29 |
| d487286dex321.htm | 5256 | 2017-11-30 08:41:29 |
| d487286dex322.htm | 5192 | 2017-11-30 08:41:29 |
| FilingSummary.xml | 33745 | 2017-11-30 08:41:29 |
| Financial_Report.xlsx | 58784 | 2017-11-30 08:41:29 |
| R1.htm | 22060 | 2017-11-30 08:41:29 |
| R10.htm | 4638 | 2017-11-30 08:41:29 |
| R11.htm | 4809 | 2017-11-30 08:41:29 |
| R12.htm | 4581 | 2017-11-30 08:41:29 |
| R13.htm | 10272 | 2017-11-30 08:41:29 |
| R14.htm | 5094 | 2017-11-30 08:41:29 |
| R15.htm | 3999 | 2017-11-30 08:41:29 |
| R16.htm | 20458 | 2017-11-30 08:41:29 |
| R17.htm | 65099 | 2017-11-30 08:41:29 |
| R18.htm | 31889 | 2017-11-30 08:41:29 |
| R19.htm | 4629 | 2017-11-30 08:41:29 |
| R2.htm | 40757 | 2017-11-30 08:41:29 |
| R20.htm | 11925 | 2017-11-30 08:41:29 |
| R21.htm | 6292 | 2017-11-30 08:41:29 |
| R22.htm | 8089 | 2017-11-30 08:41:29 |
| R23.htm | 10329 | 2017-11-30 08:41:29 |
| R24.htm | 12323 | 2017-11-30 08:41:29 |
| R25.htm | 3676 | 2017-11-30 08:41:29 |
| R26.htm | 5175 | 2017-11-30 08:41:29 |
| R27.htm | 15915 | 2017-11-30 08:41:29 |
| R28.htm | 15963 | 2017-11-30 08:41:29 |
| R29.htm | 16999 | 2017-11-30 08:41:29 |
| R3.htm | 10727 | 2017-11-30 08:41:29 |
| R30.htm | 63347 | 2017-11-30 08:41:29 |
| R31.htm | 32075 | 2017-11-30 08:41:29 |
| R32.htm | 10679 | 2017-11-30 08:41:29 |
| R33.htm | 12449 | 2017-11-30 08:41:29 |
| R34.htm | 18075 | 2017-11-30 08:41:29 |
| R35.htm | 19526 | 2017-11-30 08:41:29 |
| R36.htm | 13062 | 2017-11-30 08:41:29 |
| R37.htm | 9918 | 2017-11-30 08:41:29 |
| R38.htm | 25529 | 2017-11-30 08:41:29 |
| R39.htm | 8059 | 2017-11-30 08:41:29 |
| R4.htm | 3970 | 2017-11-30 08:41:29 |
| R40.htm | 47738 | 2017-11-30 08:41:29 |
| R41.htm | 9236 | 2017-11-30 08:41:29 |
| R42.htm | 34914 | 2017-11-30 08:41:29 |
| R43.htm | 5487 | 2017-11-30 08:41:29 |
| R44.htm | 6668 | 2017-11-30 08:41:29 |
| R45.htm | 5478 | 2017-11-30 08:41:29 |
| R46.htm | 6967 | 2017-11-30 08:41:29 |
| R47.htm | 16272 | 2017-11-30 08:41:29 |
| R48.htm | 12301 | 2017-11-30 08:41:29 |
| R49.htm | 52077 | 2017-11-30 08:41:29 |
| R5.htm | 86054 | 2017-11-30 08:41:29 |
| R50.htm | 13752 | 2017-11-30 08:41:29 |
| R51.htm | 5084 | 2017-11-30 08:41:29 |
| R52.htm | 26420 | 2017-11-30 08:41:29 |
| R53.htm | 11256 | 2017-11-30 08:41:29 |
| R54.htm | 27164 | 2017-11-30 08:41:29 |
| R6.htm | 9562 | 2017-11-30 08:41:29 |
| R7.htm | 25835 | 2017-11-30 08:41:29 |
| R8.htm | 3885 | 2017-11-30 08:41:29 |
| R9.htm | 73249 | 2017-11-30 08:41:29 |
| report.css | 2767 | 2017-11-30 08:41:29 |
| Show.js | 1410 | 2017-11-30 08:41:29 |