| Cover | Oct. 15, 2019 |
| Cover page. | |
| Document Type | 8-K |
| Entity Address, Address Line One | 150 Third Avenue South |
| Entity Address, Address Line Two | Suite 900 |
| Entity Address, City or Town | Nashville |
| Entity Address, State or Province | TN |
| Entity Address, Postal Zip Code | 37201 |
| Local Phone Number | 744-3700 |
| City Area Code | (615) |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock par value $1.00 |
| Trading Symbol | PNFP |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
| Entity Central Index Key | 0001115055 |
| Amendment Flag | false |
| Document Period End Date | Oct. 15, 2019 |
| Entity Registrant Name | PINNACLE FINANCIAL PARTNERS, INC. |
| Entity Incorporation, State or Country Code | TN |
| Entity File Number | 000-31225 |
| Entity Tax Identification Number | 62-1812853 |
