v3.25.4
Average Annual Total Returns
 12 Months Ended 58 Months Ended 60 Months Ended 120 Months Ended 279 Months Ended 309 Months Ended 390 Months Ended
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Russell 3000® Index (reflects no deduction for fees, expenses, or taxes)                
Prospectus [Line Items]                
Average Annual Return, Percent 17.15% 12.52% [1] 13.15% 14.29%        
Russell 1000® Growth Index (reflects no deduction for fees, expenses, or taxes)                
Prospectus [Line Items]                
Average Annual Return, Percent 18.56% 15.44% [1] 15.32% 18.13%        
S&P 500 Index (reflects no deduction for fees, expenses, or taxes)                
Prospectus [Line Items]                
Average Annual Return, Percent 17.88% 14.09% [1] 14.42% 14.82%        
Lipper Large-Cap Growth Funds Index                
Prospectus [Line Items]                
Average Annual Return, Percent 17.78% 12.39% [1] 12.71% 16.08%        
T. Rowe Price Blue Chip Growth Fund, Inc. - Investor Class                
Prospectus [Line Items]                
Average Annual Return, Percent 18.78%   11.70% 15.66%        
Performance Inception Date               Jun. 30, 1993
T. Rowe Price Blue Chip Growth Fund, Inc. - Investor Class | After Taxes on Distributions                
Prospectus [Line Items]                
Average Annual Return, Percent 17.39%   10.08% 14.62%        
T. Rowe Price Blue Chip Growth Fund, Inc. - Investor Class | After Taxes on Distributions and Sales                
Prospectus [Line Items]                
Average Annual Return, Percent 12.13%   8.99% 13.03%        
T. Rowe Price Blue Chip Growth Fund, Inc. - I Class                
Prospectus [Line Items]                
Average Annual Return, Percent 18.94%   11.85% 15.81%        
Performance Inception Date         Dec. 17, 2015      
T. Rowe Price Blue Chip Growth Fund, Inc. - Advisor Class                
Prospectus [Line Items]                
Average Annual Return, Percent 18.47%   11.41% 15.35%        
Performance Inception Date             Mar. 31, 2000  
T. Rowe Price Blue Chip Growth Fund, Inc. - R Class                
Prospectus [Line Items]                
Average Annual Return, Percent 18.16%   11.12% 15.05%        
Performance Inception Date           Sep. 30, 2002    
T. Rowe Price Blue Chip Growth Fund, Inc. - Z Class                
Prospectus [Line Items]                
Average Annual Return, Percent 19.62% 12.22%            
Performance Inception Date   Feb. 22, 2021            
[1] Return since 2/22/21.