Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000936395-19-000040-index-headers.html | 2019-09-11 14:15:18 | |
| 0000936395-19-000040-index.html | 2019-09-11 14:15:18 | |
| 0000936395-19-000040.txt | 2019-09-11 14:15:18 | |
 0000936395-19-000040-xbrl.zip | 315545 | 2019-09-11 14:15:18 |
| a20190731-10q.htm | 2662852 | 2019-09-11 14:15:18 |
| a20190731-10q_htm.xml | 2806418 | 2019-09-11 14:15:18 |
| cien-20190731.xsd | 60315 | 2019-09-11 14:15:18 |
| cien-20190731_cal.xml | 116213 | 2019-09-11 14:15:18 |
| cien-20190731_def.xml | 337894 | 2019-09-11 14:15:18 |
| cien-20190731_lab.xml | 800691 | 2019-09-11 14:15:18 |
| cien-20190731_pre.xml | 507407 | 2019-09-11 14:15:18 |
| ex311certofceo9-11x19.htm | 8851 | 2019-09-11 14:15:18 |
| ex312certofcfo9-11x19.htm | 8713 | 2019-09-11 14:15:18 |
| ex321certofceosection9.htm | 5285 | 2019-09-11 14:15:18 |
| ex322certofcfosection9.htm | 5113 | 2019-09-11 14:15:18 |
| FilingSummary.xml | 51197 | 2019-09-11 14:15:18 |
| Financial_Report.xlsx | 108640 | 2019-09-11 14:15:18 |
| MetaLinks.json | 702084 | 2019-09-11 14:15:18 |
| R1.htm | 52181 | 2019-09-11 14:15:18 |
| R10.htm | 115530 | 2019-09-11 14:15:18 |
| R11.htm | 127446 | 2019-09-11 14:15:18 |
| R12.htm | 17336 | 2019-09-11 14:15:18 |
| R13.htm | 45666 | 2019-09-11 14:15:18 |
| R14.htm | 27718 | 2019-09-11 14:15:18 |
| R15.htm | 7162 | 2019-09-11 14:15:18 |
| R16.htm | 50848 | 2019-09-11 14:15:18 |
| R17.htm | 155085 | 2019-09-11 14:15:18 |
| R18.htm | 18000 | 2019-09-11 14:15:18 |
| R19.htm | 21503 | 2019-09-11 14:15:18 |
| R2.htm | 64232 | 2019-09-11 14:15:18 |
| R20.htm | 31002 | 2019-09-11 14:15:18 |
| R21.htm | 11452 | 2019-09-11 14:15:18 |
| R22.htm | 52302 | 2019-09-11 14:15:18 |
| R23.htm | 23553 | 2019-09-11 14:15:18 |
| R24.htm | 71189 | 2019-09-11 14:15:18 |
| R25.htm | 16540 | 2019-09-11 14:15:18 |
| R26.htm | 36360 | 2019-09-11 14:15:18 |
| R27.htm | 134086 | 2019-09-11 14:15:18 |
| R28.htm | 13255 | 2019-09-11 14:15:18 |
| R29.htm | 6480 | 2019-09-11 14:15:18 |
| R3.htm | 22791 | 2019-09-11 14:15:18 |
| R30.htm | 114688 | 2019-09-11 14:15:18 |
| R31.htm | 89453 | 2019-09-11 14:15:18 |
| R32.htm | 112446 | 2019-09-11 14:15:18 |
| R33.htm | 14027 | 2019-09-11 14:15:18 |
| R34.htm | 45902 | 2019-09-11 14:15:18 |
| R35.htm | 25165 | 2019-09-11 14:15:18 |
| R36.htm | 51742 | 2019-09-11 14:15:18 |
| R37.htm | 155138 | 2019-09-11 14:15:18 |
| R38.htm | 17761 | 2019-09-11 14:15:18 |
| R39.htm | 20525 | 2019-09-11 14:15:18 |
| R4.htm | 81856 | 2019-09-11 14:15:18 |
| R40.htm | 30407 | 2019-09-11 14:15:18 |
| R41.htm | 51371 | 2019-09-11 14:15:18 |
| R42.htm | 23099 | 2019-09-11 14:15:18 |
| R43.htm | 73830 | 2019-09-11 14:15:18 |
| R44.htm | 13204 | 2019-09-11 14:15:18 |
| R45.htm | 36715 | 2019-09-11 14:15:18 |
| R46.htm | 133195 | 2019-09-11 14:15:18 |
| R47.htm | 25537 | 2019-09-11 14:15:18 |
| R48.htm | 62284 | 2019-09-11 14:15:18 |
| R49.htm | 70028 | 2019-09-11 14:15:18 |
| R5.htm | 23270 | 2019-09-11 14:15:18 |
| R50.htm | 14921 | 2019-09-11 14:15:18 |
| R51.htm | 10865 | 2019-09-11 14:15:18 |
| R52.htm | 10562 | 2019-09-11 14:15:18 |
| R53.htm | 8070 | 2019-09-11 14:15:18 |
| R54.htm | 17216 | 2019-09-11 14:15:18 |
| R55.htm | 32022 | 2019-09-11 14:15:18 |
| R56.htm | 24939 | 2019-09-11 14:15:18 |
| R57.htm | 13268 | 2019-09-11 14:15:18 |
| R58.htm | 4099 | 2019-09-11 14:15:18 |
| R59.htm | 24910 | 2019-09-11 14:15:18 |
| R6.htm | 94798 | 2019-09-11 14:15:18 |
| R60.htm | 9053 | 2019-09-11 14:15:18 |
| R61.htm | 53909 | 2019-09-11 14:15:18 |
| R62.htm | 79169 | 2019-09-11 14:15:18 |
| R63.htm | 20435 | 2019-09-11 14:15:18 |
| R64.htm | 30853 | 2019-09-11 14:15:18 |
| R65.htm | 23921 | 2019-09-11 14:15:18 |
| R66.htm | 10187 | 2019-09-11 14:15:18 |
| R67.htm | 18491 | 2019-09-11 14:15:18 |
| R68.htm | 18353 | 2019-09-11 14:15:18 |
| R69.htm | 27659 | 2019-09-11 14:15:18 |
| R7.htm | 4782 | 2019-09-11 14:15:18 |
| R70.htm | 7900 | 2019-09-11 14:15:18 |
| R71.htm | 9476 | 2019-09-11 14:15:18 |
| R72.htm | 16845 | 2019-09-11 14:15:18 |
| R73.htm | 45513 | 2019-09-11 14:15:18 |
| R74.htm | 23266 | 2019-09-11 14:15:18 |
| R75.htm | 8074 | 2019-09-11 14:15:18 |
| R76.htm | 20724 | 2019-09-11 14:15:18 |
| R77.htm | 26370 | 2019-09-11 14:15:18 |
| R78.htm | 8261 | 2019-09-11 14:15:18 |
| R79.htm | 25941 | 2019-09-11 14:15:18 |
| R8.htm | 44752 | 2019-09-11 14:15:18 |
| R80.htm | 86029 | 2019-09-11 14:15:18 |
| R81.htm | 12071 | 2019-09-11 14:15:18 |
| R82.htm | 16100 | 2019-09-11 14:15:18 |
| R83.htm | 24484 | 2019-09-11 14:15:18 |
| R84.htm | 18123 | 2019-09-11 14:15:18 |
| R9.htm | 7290 | 2019-09-11 14:15:18 |
| R9999.htm | 7424 | 2019-09-11 14:15:18 |
| report.css | 2767 | 2019-09-11 14:15:18 |
| Show.js | 1085 | 2019-09-11 14:15:18 |