v3.26.1
Average Annual Total Returns
 12 Months Ended 58 Months Ended 60 Months Ended 61 Months Ended 102 Months Ended 120 Months Ended 157 Months Ended 252 Months Ended 502 Months Ended
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
 [5]
Dec. 31, 2025
Dec. 31, 2025
 [8]
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Bloomberg U.S. Aggregate Bond Index                          
Prospectus [Line Items]                          
Average Annual Return, Percent 7.30% 0.05% [1]   (0.36%) (0.28%) [2]   1.82% [3]   2.01%        
Bloomberg 1-3 Year U.S. Corporate Bond Index                          
Prospectus [Line Items]                          
Average Annual Return, Percent 5.88%     2.57% 2.58% [2]                
Lipper Short Investment Grade Debt Funds Average                          
Prospectus [Line Items]                          
Average Annual Return, Percent 5.73%   2.43% [4] 2.42%   2.41%     2.55%        
Bloomberg 1-3 Year U.S. Government/Credit Bond Index                          
Prospectus [Line Items]                          
Average Annual Return, Percent 5.35% 2.02% [1]   1.97%         2.09%        
Bloomberg Short-Term Government/Corporate Index                          
Prospectus [Line Items]                          
Average Annual Return, Percent 4.46% 3.21% [6]   3.12%     2.61% [3]   2.34%        
Lipper Ultra-Short Obligations Funds Average                          
Prospectus [Line Items]                          
Average Annual Return, Percent 4.81%   3.32% [7] 3.30%       2.66% 2.56%        
T. Rowe Price Short-Term Bond Fund, Inc.-Investor Class                          
Prospectus [Line Items]                          
Average Annual Return, Percent 5.67%     2.13%         2.37%      
Performance Inception Date                         Mar. 02, 1984
T. Rowe Price Short-Term Bond Fund, Inc.-Investor Class | After Taxes on Distributions                          
Prospectus [Line Items]                          
Average Annual Return, Percent 3.87%     0.93%         1.36%      
T. Rowe Price Short-Term Bond Fund, Inc.-Investor Class | After Taxes on Distributions and Sales                          
Prospectus [Line Items]                          
Average Annual Return, Percent 3.33%     1.10%         1.37%      
T. Rowe Price Short-Term Bond Fund, Inc.-I Class                          
Prospectus [Line Items]                          
Average Annual Return, Percent 5.82%     2.25%         2.51%      
Performance Inception Date                   Dec. 17, 2015      
T. Rowe Price Short-Term Bond Fund, Inc.-Advisor Class                          
Prospectus [Line Items]                          
Average Annual Return, Percent 5.09%     1.82%         2.09%      
Performance Inception Date                       Dec. 31, 2004  
T. Rowe Price Short-Term Bond Fund, Inc.-Z Class                          
Prospectus [Line Items]                          
Average Annual Return, Percent 5.94% 2.58%                  
Performance Inception Date   Feb. 22, 2021                      
T. Rowe Price Ultra Short-Term Bond Fund-Investor Class                          
Prospectus [Line Items]                          
Average Annual Return, Percent 5.20%     3.45%         2.96%      
Performance Inception Date                     Dec. 03, 2012    
T. Rowe Price Ultra Short-Term Bond Fund-Investor Class | After Taxes on Distributions                          
Prospectus [Line Items]                          
Average Annual Return, Percent 3.22%     2.05%         1.84%      
T. Rowe Price Ultra Short-Term Bond Fund-Investor Class | After Taxes on Distributions and Sales                          
Prospectus [Line Items]                          
Average Annual Return, Percent 3.05%     2.04%         1.79%      
T. Rowe Price Ultra Short-Term Bond Fund-I Class                          
Prospectus [Line Items]                          
Average Annual Return, Percent 5.32%     3.53%     3.23%          
Performance Inception Date             Jul. 06, 2017            
T. Rowe Price Ultra Short-Term Bond Fund-Z Class                          
Prospectus [Line Items]                          
Average Annual Return, Percent 5.53% 3.81%                  
Performance Inception Date   Feb. 22, 2021                      
T. Rowe Price Short Duration Income Fund-Investor Class                          
Prospectus [Line Items]                          
Average Annual Return, Percent 6.33%     2.68% 2.69%                
Performance Inception Date         Dec. 08, 2020                
T. Rowe Price Short Duration Income Fund-Investor Class | After Taxes on Distributions                          
Prospectus [Line Items]                          
Average Annual Return, Percent 4.24%     1.17% 1.18%                
T. Rowe Price Short Duration Income Fund-Investor Class | After Taxes on Distributions and Sales                          
Prospectus [Line Items]                          
Average Annual Return, Percent 3.71%     1.38% 1.39%                
T. Rowe Price Short Duration Income Fund-I Class                          
Prospectus [Line Items]                          
Average Annual Return, Percent 6.55%     2.79% 2.80%                
Performance Inception Date         Dec. 08, 2020                
[1] Return since 2/22/21.
[2] Return since 12/08/20.
[3] Return since 7/6/17.
[4] Return since 2/28/21.
[5] Return since 11/30/20.
[6] Return since 2/22/21.
[7] Return since 2/28/21.
[8] Return since 6/30/17.