Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000093751-22-000424-index-headers.html | 2022-02-17 16:38:23 | |
| 0000093751-22-000424-index.html | 2022-02-17 16:38:23 | |
| 0000093751-22-000424.txt | 2022-02-17 16:38:23 | |
 0000093751-22-000424-xbrl.zip | 1197812 | 2022-02-17 16:38:23 |
| ex109descriptionofcompen.htm | 3312 | 2022-02-17 16:38:23 |
 ex109descriptionofcompen001.jpg | 194473 | 2022-02-17 16:38:23 |
| exhibit21-december312021.htm | 17145 | 2022-02-17 16:38:23 |
| exhibit23consentletterofey.htm | 13285 | 2022-02-17 16:38:23 |
| exhibit311-december312021.htm | 10866 | 2022-02-17 16:38:23 |
| exhibit312-december312021.htm | 11092 | 2022-02-17 16:38:23 |
| exhibit32-december312021.htm | 8578 | 2022-02-17 16:38:23 |
| exhibit41-sttxdescriptio.htm | 67441 | 2022-02-17 16:38:23 |
 exhibit41-sttxdescriptio001.jpg | 258116 | 2022-02-17 16:38:23 |
 exhibit41-sttxdescriptio002.jpg | 217790 | 2022-02-17 16:38:23 |
 exhibit41-sttxdescriptio003.jpg | 290679 | 2022-02-17 16:38:23 |
 exhibit41-sttxdescriptio004.jpg | 281052 | 2022-02-17 16:38:23 |
 exhibit41-sttxdescriptio005.jpg | 254705 | 2022-02-17 16:38:23 |
 exhibit41-sttxdescriptio006.jpg | 267694 | 2022-02-17 16:38:23 |
 exhibit41-sttxdescriptio007.jpg | 282661 | 2022-02-17 16:38:23 |
 exhibit41-sttxdescriptio008.jpg | 246949 | 2022-02-17 16:38:23 |
 exhibit41-sttxdescriptio009.jpg | 255828 | 2022-02-17 16:38:23 |
 exhibit41-sttxdescriptio010.jpg | 262316 | 2022-02-17 16:38:23 |
 exhibit41-sttxdescriptio011.jpg | 259840 | 2022-02-17 16:38:23 |
 exhibit41-sttxdescriptio012.jpg | 262886 | 2022-02-17 16:38:23 |
 exhibit41-sttxdescriptio013.jpg | 315371 | 2022-02-17 16:38:23 |
 exhibit41-sttxdescriptio014.jpg | 270922 | 2022-02-17 16:38:23 |
 exhibit41-sttxdescriptio015.jpg | 274587 | 2022-02-17 16:38:23 |
 exhibit41-sttxdescriptio016.jpg | 259040 | 2022-02-17 16:38:23 |
 exhibit41-sttxdescriptio017.jpg | 275004 | 2022-02-17 16:38:23 |
 exhibit41-sttxdescriptio018.jpg | 215592 | 2022-02-17 16:38:23 |
 exhibit41-sttxdescriptio019.jpg | 68920 | 2022-02-17 16:38:23 |
| FilingSummary.xml | 89629 | 2022-02-17 16:38:23 |
| Financial_Report.xlsx | 278359 | 2022-02-17 16:38:23 |
| MetaLinks.json | 1634737 | 2022-02-17 16:38:23 |
| R1.htm | 71512 | 2022-02-17 16:38:23 |
| R10.htm | 124260 | 2022-02-17 16:38:23 |
| R100.htm | 50153 | 2022-02-17 16:38:23 |
| R101.htm | 7418 | 2022-02-17 16:38:23 |
| R102.htm | 9848 | 2022-02-17 16:38:23 |
| R103.htm | 11885 | 2022-02-17 16:38:23 |
| R104.htm | 33560 | 2022-02-17 16:38:23 |
| R105.htm | 33145 | 2022-02-17 16:38:23 |
| R106.htm | 80843 | 2022-02-17 16:38:23 |
| R107.htm | 62227 | 2022-02-17 16:38:23 |
| R108.htm | 30326 | 2022-02-17 16:38:23 |
| R109.htm | 23192 | 2022-02-17 16:38:23 |
| R11.htm | 38258 | 2022-02-17 16:38:23 |
| R110.htm | 19954 | 2022-02-17 16:38:23 |
| R111.htm | 26534 | 2022-02-17 16:38:23 |
| R112.htm | 46652 | 2022-02-17 16:38:23 |
| R113.htm | 37475 | 2022-02-17 16:38:23 |
| R114.htm | 90512 | 2022-02-17 16:38:23 |
| R115.htm | 41618 | 2022-02-17 16:38:23 |
| R116.htm | 53003 | 2022-02-17 16:38:23 |
| R117.htm | 25179 | 2022-02-17 16:38:23 |
| R118.htm | 23626 | 2022-02-17 16:38:23 |
| R119.htm | 23644 | 2022-02-17 16:38:23 |
| R12.htm | 476338 | 2022-02-17 16:38:23 |
| R120.htm | 20007 | 2022-02-17 16:38:23 |
| R121.htm | 29594 | 2022-02-17 16:38:23 |
| R122.htm | 37328 | 2022-02-17 16:38:23 |
| R123.htm | 55360 | 2022-02-17 16:38:23 |
| R124.htm | 13498 | 2022-02-17 16:38:23 |
| R125.htm | 19342 | 2022-02-17 16:38:23 |
| R126.htm | 21566 | 2022-02-17 16:38:23 |
| R127.htm | 25818 | 2022-02-17 16:38:23 |
| R128.htm | 30022 | 2022-02-17 16:38:23 |
| R129.htm | 26292 | 2022-02-17 16:38:23 |
| R13.htm | 470818 | 2022-02-17 16:38:23 |
| R130.htm | 17951 | 2022-02-17 16:38:23 |
| R131.htm | 40502 | 2022-02-17 16:38:23 |
| R132.htm | 25938 | 2022-02-17 16:38:23 |
| R133.htm | 14218 | 2022-02-17 16:38:23 |
| R134.htm | 47969 | 2022-02-17 16:38:23 |
| R135.htm | 22815 | 2022-02-17 16:38:23 |
| R136.htm | 20441 | 2022-02-17 16:38:23 |
| R137.htm | 62157 | 2022-02-17 16:38:23 |
| R138.htm | 9643 | 2022-02-17 16:38:23 |
| R139.htm | 109786 | 2022-02-17 16:38:23 |
| R14.htm | 326923 | 2022-02-17 16:38:23 |
| R140.htm | 21723 | 2022-02-17 16:38:23 |
| R141.htm | 13470 | 2022-02-17 16:38:23 |
| R142.htm | 50158 | 2022-02-17 16:38:23 |
| R143.htm | 61466 | 2022-02-17 16:38:23 |
| R144.htm | 53185 | 2022-02-17 16:38:23 |
| R145.htm | 12933 | 2022-02-17 16:38:23 |
| R15.htm | 77733 | 2022-02-17 16:38:23 |
| R16.htm | 24833 | 2022-02-17 16:38:23 |
| R17.htm | 6268 | 2022-02-17 16:38:23 |
| R18.htm | 49089 | 2022-02-17 16:38:23 |
| R19.htm | 77767 | 2022-02-17 16:38:23 |
| R2.htm | 7871 | 2022-02-17 16:38:23 |
| R20.htm | 168553 | 2022-02-17 16:38:23 |
| R21.htm | 184897 | 2022-02-17 16:38:23 |
| R22.htm | 25141 | 2022-02-17 16:38:23 |
| R23.htm | 20868 | 2022-02-17 16:38:23 |
| R24.htm | 14618 | 2022-02-17 16:38:23 |
| R25.htm | 162835 | 2022-02-17 16:38:23 |
| R26.htm | 127779 | 2022-02-17 16:38:23 |
| R27.htm | 39141 | 2022-02-17 16:38:23 |
| R28.htm | 52233 | 2022-02-17 16:38:23 |
| R29.htm | 9293 | 2022-02-17 16:38:23 |
| R3.htm | 108593 | 2022-02-17 16:38:23 |
| R30.htm | 114287 | 2022-02-17 16:38:23 |
| R31.htm | 61475 | 2022-02-17 16:38:23 |
| R32.htm | 98655 | 2022-02-17 16:38:23 |
| R33.htm | 34020 | 2022-02-17 16:38:23 |
| R34.htm | 152355 | 2022-02-17 16:38:23 |
| R35.htm | 180627 | 2022-02-17 16:38:23 |
| R36.htm | 30319 | 2022-02-17 16:38:23 |
| R37.htm | 86216 | 2022-02-17 16:38:23 |
| R38.htm | 5093 | 2022-02-17 16:38:23 |
| R39.htm | 54527 | 2022-02-17 16:38:23 |
| R4.htm | 38679 | 2022-02-17 16:38:23 |
| R40.htm | 19809 | 2022-02-17 16:38:23 |
| R41.htm | 466252 | 2022-02-17 16:38:23 |
| R42.htm | 457596 | 2022-02-17 16:38:23 |
| R43.htm | 308618 | 2022-02-17 16:38:23 |
| R44.htm | 78792 | 2022-02-17 16:38:23 |
| R45.htm | 24879 | 2022-02-17 16:38:23 |
| R46.htm | 47183 | 2022-02-17 16:38:23 |
| R47.htm | 80540 | 2022-02-17 16:38:23 |
| R48.htm | 188128 | 2022-02-17 16:38:23 |
| R49.htm | 185668 | 2022-02-17 16:38:23 |
| R5.htm | 15942 | 2022-02-17 16:38:23 |
| R50.htm | 21242 | 2022-02-17 16:38:23 |
| R51.htm | 158890 | 2022-02-17 16:38:23 |
| R52.htm | 123677 | 2022-02-17 16:38:23 |
| R53.htm | 38743 | 2022-02-17 16:38:23 |
| R54.htm | 44919 | 2022-02-17 16:38:23 |
| R55.htm | 74755 | 2022-02-17 16:38:23 |
| R56.htm | 61729 | 2022-02-17 16:38:23 |
| R57.htm | 100348 | 2022-02-17 16:38:23 |
| R58.htm | 32037 | 2022-02-17 16:38:23 |
| R59.htm | 142759 | 2022-02-17 16:38:23 |
| R6.htm | 118818 | 2022-02-17 16:38:23 |
| R60.htm | 167961 | 2022-02-17 16:38:23 |
| R61.htm | 28936 | 2022-02-17 16:38:23 |
| R62.htm | 88249 | 2022-02-17 16:38:23 |
| R63.htm | 11071 | 2022-02-17 16:38:23 |
| R64.htm | 190087 | 2022-02-17 16:38:23 |
| R65.htm | 71996 | 2022-02-17 16:38:23 |
| R66.htm | 31777 | 2022-02-17 16:38:23 |
| R67.htm | 79065 | 2022-02-17 16:38:23 |
| R68.htm | 44058 | 2022-02-17 16:38:23 |
| R69.htm | 113149 | 2022-02-17 16:38:23 |
| R7.htm | 49599 | 2022-02-17 16:38:23 |
| R70.htm | 73491 | 2022-02-17 16:38:23 |
| R71.htm | 162279 | 2022-02-17 16:38:23 |
| R72.htm | 48322 | 2022-02-17 16:38:23 |
| R73.htm | 38040 | 2022-02-17 16:38:23 |
| R74.htm | 63409 | 2022-02-17 16:38:23 |
| R75.htm | 116083 | 2022-02-17 16:38:23 |
| R76.htm | 45664 | 2022-02-17 16:38:23 |
| R77.htm | 8946 | 2022-02-17 16:38:23 |
| R78.htm | 21191 | 2022-02-17 16:38:23 |
| R79.htm | 29040 | 2022-02-17 16:38:23 |
| R8.htm | 79210 | 2022-02-17 16:38:23 |
| R80.htm | 29580 | 2022-02-17 16:38:23 |
| R81.htm | 21396 | 2022-02-17 16:38:23 |
| R82.htm | 13400 | 2022-02-17 16:38:23 |
| R83.htm | 35577 | 2022-02-17 16:38:23 |
| R84.htm | 6365 | 2022-02-17 16:38:23 |
| R85.htm | 16135 | 2022-02-17 16:38:23 |
| R86.htm | 23496 | 2022-02-17 16:38:23 |
| R87.htm | 8832 | 2022-02-17 16:38:23 |
| R88.htm | 83673 | 2022-02-17 16:38:23 |
| R89.htm | 6543 | 2022-02-17 16:38:23 |
| R9.htm | 4640 | 2022-02-17 16:38:23 |
| R90.htm | 21270 | 2022-02-17 16:38:23 |
| R91.htm | 27007 | 2022-02-17 16:38:23 |
| R92.htm | 32647 | 2022-02-17 16:38:23 |
| R93.htm | 19513 | 2022-02-17 16:38:23 |
| R94.htm | 14895 | 2022-02-17 16:38:23 |
| R95.htm | 17220 | 2022-02-17 16:38:23 |
| R96.htm | 27879 | 2022-02-17 16:38:23 |
| R97.htm | 6581 | 2022-02-17 16:38:23 |
| R98.htm | 54374 | 2022-02-17 16:38:23 |
| R99.htm | 59107 | 2022-02-17 16:38:23 |
| report.css | 2768 | 2022-02-17 16:38:23 |
| Show.js | 1086 | 2022-02-17 16:38:23 |
| stt-20211231.htm | 9854781 | 2022-02-17 16:38:23 |
| stt-20211231.xsd | 159821 | 2022-02-17 16:38:23 |
| stt-20211231_cal.xml | 271795 | 2022-02-17 16:38:23 |
| stt-20211231_def.xml | 884767 | 2022-02-17 16:38:23 |
 stt-20211231_g1.jpg | 97165 | 2022-02-17 16:38:23 |
| stt-20211231_htm.xml | 9621492 | 2022-02-17 16:38:23 |
| stt-20211231_lab.xml | 1681551 | 2022-02-17 16:38:23 |
| stt-20211231_pre.xml | 1238238 | 2022-02-17 16:38:23 |