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Insider Trading Arrangements - shares
 3 Months Ended 12 Months Ended
Dec. 31, 2023
Dec. 31, 2023
Dec. 14, 2023
Trading Arrangements, by Individual      
Non-Rule 10b5-1 Arrangement Adopted false    
Rule 10b5-1 Arrangement Terminated false    
Non-Rule 10b5-1 Arrangement Terminated false    
M. Terry Turner [Member]      
Trading Arrangements, by Individual      
Material Terms of Trading Arrangement  
M. Terry Turner, the President, Chief Executive Officer and director of Pinnacle Financial, adopted a new trading plan on December 14, 2023 (with the first trade under the plan to occur on or after March 13, 2024). The plan expires on the earlier of (i) December 1, 2024 or (ii) upon the completion of the sale of the maximum number of shares under the plan. The aggregate number of shares to be sold under the plan is 72,000 shares.
  
Name M. Terry Turner    
Title President, Chief Executive Officer and director    
Rule 10b5-1 Arrangement Adopted true    
Adoption Date December 14, 2023    
Termination Date December 1, 2024    
Arrangement Duration 263 days    
Aggregate Available     72,000
Robert A. McCabe, Jr. [Member]      
Trading Arrangements, by Individual      
Material Terms of Trading Arrangement   Robert A. McCabe, Jr., the Chairman of the Board and director of Pinnacle Financial, adopted a new trading plan on December 14, 2023 (with the first trade under the plan to occur on or after March 13, 2024). The plan expires on the earlier of (i) December 1, 2024 or (ii) upon the completion of the sale of the maximum number of shares under the plan. The aggregate number of shares to be sold under the plan is 72,000 share  
Name Robert A. McCabe, Jr.    
Title Chairman of the Board and director    
Adoption Date December 14, 2023    
Termination Date December 1, 2024    
Arrangement Duration 263 days    
Aggregate Available     72,000