v3.26.1
UMB Retirement Master Trust - Schedule of Master Trust and Plan's Interest in Net Assets of Master Trust (Details) - EBP 001 - USD ($)
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Investments, at fair value:      
Total investments $ 957,000,119 $ 707,526,594  
Receivables:      
Dividends receivable 80,298    
Other 5,665    
Total receivables 12,565,680 10,048,490  
Cash 3,521    
Net assets $ 969,569,320 717,575,084 $ 615,480,447
Master Trust      
Investments, at fair value:      
Total investments   777,597,721  
Receivables:      
Dividends receivable   322,230  
Other   146  
Total receivables   322,376  
Cash   5,865  
Net assets   777,925,962  
Plan's Interest in Master Trust      
Investments, at fair value:      
Total investments   707,450,139  
Receivables:      
Dividends receivable   72,755  
Other   146  
Total receivables   72,901  
Cash   3,554  
Net assets   707,526,594  
Mutual Funds | Master Trust      
Investments, at fair value:      
Total investments   569,017,347  
Mutual Funds | Plan's Interest in Master Trust      
Investments, at fair value:      
Total investments   569,017,347  
UMB Company Stock | Master Trust      
Investments, at fair value:      
Total investments   91,095,797  
UMB Company Stock | Plan's Interest in Master Trust      
Investments, at fair value:      
Total investments   20,948,215  
Money Market Fund | Master Trust      
Investments, at fair value:      
Total investments   29,916,843  
Money Market Fund | Plan's Interest in Master Trust      
Investments, at fair value:      
Total investments   29,916,843  
Collective Investment Trust | Master Trust      
Investments, at fair value:      
Total investments   87,567,734  
Collective Investment Trust | Plan's Interest in Master Trust      
Investments, at fair value:      
Total investments   $ 87,567,734