| Cover | Oct. 20, 2020 | Jul. 21, 2020 |
| Cover [Abstract] | ||
| Document Type | 8-K | |
| Document Period End Date | Oct. 20, 2020 | |
| 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 | |
| City Area Code | (615) | |
| Local Phone Number | 744-3700 | |
| Written Communications | false | |
| Soliciting Material | false | |
| Pre-commencement Tender Offer | false | |
| Pre-commencement Issuer Tender Offer | false | |
| Entity Emerging Growth Company | false | |
| Entity Tax Identification Number | 62-1812853 | |
| Entity File Number | 000-31225 | |
| Entity Incorporation, State or Country Code | TN | |
| Entity Registrant Name | PINNACLE FINANCIAL PARTNERS, INC. | |
| Entity Central Index Key | 0001115055 | |
| Amendment Flag | false | |
| Common Class A [Member] | ||
| Cover [Abstract] | ||
| Title of 12(b) Security | Common Stock par value $1.00 | |
| Trading Symbol | PNFP | |
| Security Exchange Name | NASDAQ | |
| Document Information [Line Items] | ||
| Title of 12(b) Security | Common Stock par value $1.00 | |
| Trading Symbol | PNFP | |
| Security Exchange Name | NASDAQ | |
| Noncumulative Preferred Stock [Member] | ||
| Cover [Abstract] | ||
| Title of 12(b) Security | Depositary Shares (each representing a 1/40th interest in a share of 6.75% Fixed-Rate Non-Cumulative Perpetual Preferred Stock, Series B) | |
| Trading Symbol | PNFPP | |
| Security Exchange Name | NASDAQ | |
| Document Information [Line Items] | ||
| Title of 12(b) Security | Depositary Shares (each representing a 1/40th interest in a share of 6.75% Fixed-Rate Non-Cumulative Perpetual Preferred Stock, Series B) | |
| Trading Symbol | PNFPP | |
| Security Exchange Name | NASDAQ |
