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| 0000081018-18-000006-index.html | 2018-04-27 13:33:00 | |
| 0000081018-18-000006.txt | 2018-04-27 13:33:00 | |
 0000081018-18-000006-xbrl.zip | 234964 | 2018-04-27 13:33:00 |
| FilingSummary.xml | 34562 | 2018-04-27 13:33:00 |
| Financial_Report.xlsx | 74823 | 2018-04-27 13:33:00 |
| psco-20180331.xml | 2503697 | 2018-04-27 13:33:00 |
| psco-20180331.xsd | 57692 | 2018-04-27 13:33:00 |
| psco-20180331_cal.xml | 98697 | 2018-04-27 13:33:00 |
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| psco-20180331_lab.xml | 729323 | 2018-04-27 13:33:00 |
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| psco3311810-q.htm | 1194919 | 2018-04-27 13:33:00 |
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| report.css | 2767 | 2018-04-27 13:33:00 |
| Show.js | 1410 | 2018-04-27 13:33:00 |