| Component: (Network and Table) | |
|---|---|
| Network | 2401403 - Disclosure - Significant Accounting Policies Goodwill and Intangible Assets (Details) (http://www.bokf.com/role/SignificantAccountingPoliciesGoodwillAndIntangibleAssetsDetails) |
| Table | Schedule of Acquired Finite-Lived Intangible Asset by Major Class [Table] |
| Reporting Entity [Axis] | 0000875357 (http://www.sec.gov/CIK) |
| Acquired Finite-Lived Intangible Assets [Line Items] | Period [Axis] | |
|---|---|---|
2016-01-01 - 2016-12-31 | ||
| Range [Axis] | ||
| Minimum [Member] | Maximum [Member] | |
Finite-Lived Intangible Asset, Useful Life | ||