v3.25.2
Average Annual Total Returns
 12 Months Ended 41 Months Ended
Dec. 31, 2024
Dec. 31, 2024
Bloomberg U.S. Aggregate Bond Index    
Prospectus [Line Items]    
Average Annual Return, Percent 1.25% (2.32%) [1]
S&P Target Date Retirement Income Index    
Prospectus [Line Items]    
Average Annual Return, Percent 6.54% 1.64% [1]
S&P Target Date 2010 Index    
Prospectus [Line Items]    
Average Annual Return, Percent 6.74% 1.83% [2]
S&P Target Date 2015 Index    
Prospectus [Line Items]    
Average Annual Return, Percent 7.25% 2.04% [3]
S&P Target Date 2020 Index    
Prospectus [Line Items]    
Average Annual Return, Percent 8.09% 2.39% [4]
Russell 3000® Index    
Prospectus [Line Items]    
Average Annual Return, Percent 23.81% 9.04% [5]
S&P Target Date 2025 Index    
Prospectus [Line Items]    
Average Annual Return, Percent 8.44% 2.65% [5]
S&P Target Date 2030 Index    
Prospectus [Line Items]    
Average Annual Return, Percent 9.90% 3.38% [6]
S&P Target Date 2035 Index    
Prospectus [Line Items]    
Average Annual Return, Percent 11.38% 4.08% [7]
S&P Target Date 2040 Index    
Prospectus [Line Items]    
Average Annual Return, Percent 12.87% 4.80% [8]
S&P Target Date 2045 Index    
Prospectus [Line Items]    
Average Annual Return, Percent 13.58% 5.22% [9]
S&P Target Date 2050 Index    
Prospectus [Line Items]    
Average Annual Return, Percent 14.30% 5.52% [10]
S&P Target Date 2055 Index    
Prospectus [Line Items]    
Average Annual Return, Percent 14.32% 5.53% [11]
S&P Target Date 2060 Index    
Prospectus [Line Items]    
Average Annual Return, Percent 14.44% 5.58% [12]
S&P Target Date 2065+ Index    
Prospectus [Line Items]    
Average Annual Return, Percent 14.83% 5.74% [13]
T. Rowe Price Retirement Blend 2005 Fund - Investor Class    
Prospectus [Line Items]    
Average Annual Return, Percent 8.43% 2.09%
Performance Inception Date   Jul. 26, 2021
T. Rowe Price Retirement Blend 2005 Fund - Investor Class | After Taxes on Distributions    
Prospectus [Line Items]    
Average Annual Return, Percent 7.60% 1.05%
T. Rowe Price Retirement Blend 2005 Fund - Investor Class | After Taxes on Distributions and Sales    
Prospectus [Line Items]    
Average Annual Return, Percent 5.10% 1.21%
T. Rowe Price Retirement Blend 2005 Fund - I Class    
Prospectus [Line Items]    
Average Annual Return, Percent 8.70% 2.24%
Performance Inception Date   Jul. 26, 2021
T. Rowe Price Retirement Blend 2010 Fund - Investor Class    
Prospectus [Line Items]    
Average Annual Return, Percent 8.86% 2.21%
Performance Inception Date   Jul. 26, 2021
T. Rowe Price Retirement Blend 2010 Fund - Investor Class | After Taxes on Distributions    
Prospectus [Line Items]    
Average Annual Return, Percent 7.66% 1.10%
T. Rowe Price Retirement Blend 2010 Fund - Investor Class | After Taxes on Distributions and Sales    
Prospectus [Line Items]    
Average Annual Return, Percent 5.40% 1.29%
T. Rowe Price Retirement Blend 2010 Fund - I Class    
Prospectus [Line Items]    
Average Annual Return, Percent 9.02% 2.38%
Performance Inception Date   Jul. 26, 2021
T. Rowe Price Retirement Blend 2015 Fund - Investor Class    
Prospectus [Line Items]    
Average Annual Return, Percent 9.18% 2.34%
Performance Inception Date   Jul. 26, 2021
T. Rowe Price Retirement Blend 2015 Fund - Investor Class | After Taxes on Distributions    
Prospectus [Line Items]    
Average Annual Return, Percent 8.00% 1.25%
T. Rowe Price Retirement Blend 2015 Fund - Investor Class | After Taxes on Distributions and Sales    
Prospectus [Line Items]    
Average Annual Return, Percent 5.61% 1.40%
T. Rowe Price Retirement Blend 2015 Fund - I Class    
Prospectus [Line Items]    
Average Annual Return, Percent 9.33% 2.52%
Performance Inception Date   Jul. 26, 2021
T. Rowe Price Retirement Blend 2020 Fund - Investor Class    
Prospectus [Line Items]    
Average Annual Return, Percent 9.43% 2.49%
Performance Inception Date   Jul. 26, 2021
T. Rowe Price Retirement Blend 2020 Fund - Investor Class | After Taxes on Distributions    
Prospectus [Line Items]    
Average Annual Return, Percent 8.36% 1.47%
T. Rowe Price Retirement Blend 2020 Fund - Investor Class | After Taxes on Distributions and Sales    
Prospectus [Line Items]    
Average Annual Return, Percent 5.76% 1.56%
T. Rowe Price Retirement Blend 2020 Fund - I Class    
Prospectus [Line Items]    
Average Annual Return, Percent 9.74% 2.63%
Performance Inception Date   Jul. 26, 2021
T. Rowe Price Retirement Blend 2025 Fund - Investor Class    
Prospectus [Line Items]    
Average Annual Return, Percent 10.09% 2.68%
Performance Inception Date   Jul. 26, 2021
T. Rowe Price Retirement Blend 2025 Fund - Investor Class | After Taxes on Distributions    
Prospectus [Line Items]    
Average Annual Return, Percent 9.14% 1.73%
T. Rowe Price Retirement Blend 2025 Fund - Investor Class | After Taxes on Distributions and Sales    
Prospectus [Line Items]    
Average Annual Return, Percent 6.15% 1.74%
T. Rowe Price Retirement Blend 2025 Fund - I Class    
Prospectus [Line Items]    
Average Annual Return, Percent 10.27% 2.80%
Performance Inception Date   Jul. 26, 2021
T. Rowe Price Retirement Blend 2030 Fund - Investor Class    
Prospectus [Line Items]    
Average Annual Return, Percent 11.16% 3.10%
Performance Inception Date   Jul. 26, 2021
T. Rowe Price Retirement Blend 2030 Fund - Investor Class | After Taxes on Distributions    
Prospectus [Line Items]    
Average Annual Return, Percent 10.34% 2.31%
T. Rowe Price Retirement Blend 2030 Fund - Investor Class | After Taxes on Distributions and Sales    
Prospectus [Line Items]    
Average Annual Return, Percent 6.82% 2.15%
T. Rowe Price Retirement Blend 2030 Fund - I Class    
Prospectus [Line Items]    
Average Annual Return, Percent 11.30% 3.30%
Performance Inception Date   Jul. 26, 2021
T. Rowe Price Retirement Blend 2035 Fund - Investor Class    
Prospectus [Line Items]    
Average Annual Return, Percent 12.41% 4.02%
Performance Inception Date   Jul. 26, 2021
T. Rowe Price Retirement Blend 2035 Fund - Investor Class | After Taxes on Distributions    
Prospectus [Line Items]    
Average Annual Return, Percent 11.75% 3.37%
T. Rowe Price Retirement Blend 2035 Fund - Investor Class | After Taxes on Distributions and Sales    
Prospectus [Line Items]    
Average Annual Return, Percent 7.60% 2.93%
T. Rowe Price Retirement Blend 2035 Fund - I Class    
Prospectus [Line Items]    
Average Annual Return, Percent 12.58% 4.20%
Performance Inception Date   Jul. 26, 2021
T. Rowe Price Retirement Blend 2040 Fund - Investor Class    
Prospectus [Line Items]    
Average Annual Return, Percent 13.66% 4.33%
Performance Inception Date   Jul. 26, 2021
T. Rowe Price Retirement Blend 2040 Fund - Investor Class | After Taxes on Distributions    
Prospectus [Line Items]    
Average Annual Return, Percent 13.08% 3.70%
T. Rowe Price Retirement Blend 2040 Fund - Investor Class | After Taxes on Distributions and Sales    
Prospectus [Line Items]    
Average Annual Return, Percent 8.36% 3.20%
T. Rowe Price Retirement Blend 2040 Fund - I Class    
Prospectus [Line Items]    
Average Annual Return, Percent 13.85% 4.50%
Performance Inception Date   Jul. 26, 2021
T. Rowe Price Retirement Blend 2045 Fund - Investor Class    
Prospectus [Line Items]    
Average Annual Return, Percent 14.42% 4.72%
Performance Inception Date   Jul. 26, 2021
T. Rowe Price Retirement Blend 2045 Fund - Investor Class | After Taxes on Distributions    
Prospectus [Line Items]    
Average Annual Return, Percent 13.90% 4.13%
T. Rowe Price Retirement Blend 2045 Fund - Investor Class | After Taxes on Distributions and Sales    
Prospectus [Line Items]    
Average Annual Return, Percent 8.84% 3.53%
T. Rowe Price Retirement Blend 2045 Fund - I Class    
Prospectus [Line Items]    
Average Annual Return, Percent 14.78% 4.90%
Performance Inception Date   Jul. 26, 2021
T. Rowe Price Retirement Blend 2050 Fund - Investor Class    
Prospectus [Line Items]    
Average Annual Return, Percent 14.81% 4.89%
Performance Inception Date   Jul. 26, 2021
T. Rowe Price Retirement Blend 2050 Fund - Investor Class | After Taxes on Distributions    
Prospectus [Line Items]    
Average Annual Return, Percent 14.34% 4.33%
T. Rowe Price Retirement Blend 2050 Fund - Investor Class | After Taxes on Distributions and Sales    
Prospectus [Line Items]    
Average Annual Return, Percent 9.09% 3.68%
T. Rowe Price Retirement Blend 2050 Fund - I Class    
Prospectus [Line Items]    
Average Annual Return, Percent 15.02% 5.09%
Performance Inception Date   Jul. 26, 2021
T. Rowe Price Retirement Blend 2055 Fund - Investor Class    
Prospectus [Line Items]    
Average Annual Return, Percent 14.85% 4.87%
Performance Inception Date   Jul. 26, 2021
T. Rowe Price Retirement Blend 2055 Fund - Investor Class | After Taxes on Distributions    
Prospectus [Line Items]    
Average Annual Return, Percent 14.37% 4.32%
T. Rowe Price Retirement Blend 2055 Fund - Investor Class | After Taxes on Distributions and Sales    
Prospectus [Line Items]    
Average Annual Return, Percent 9.09% 3.66%
T. Rowe Price Retirement Blend 2055 Fund - I Class    
Prospectus [Line Items]    
Average Annual Return, Percent 15.11% 5.03%
Performance Inception Date   Jul. 26, 2021
T. Rowe Price Retirement Blend 2060 Fund - Investor Class    
Prospectus [Line Items]    
Average Annual Return, Percent 14.74% 4.84%
Performance Inception Date   Jul. 26, 2021
T. Rowe Price Retirement Blend 2060 Fund - Investor Class | After Taxes on Distributions    
Prospectus [Line Items]    
Average Annual Return, Percent 14.27% 4.26%
T. Rowe Price Retirement Blend 2060 Fund - Investor Class | After Taxes on Distributions and Sales    
Prospectus [Line Items]    
Average Annual Return, Percent 9.05% 3.63%
T. Rowe Price Retirement Blend 2060 Fund - I Class    
Prospectus [Line Items]    
Average Annual Return, Percent 15.07% 5.06%
Performance Inception Date   Jul. 26, 2021
T. Rowe Price Retirement Blend 2065 Fund - Investor Class    
Prospectus [Line Items]    
Average Annual Return, Percent 14.85% 4.86%
Performance Inception Date   Jul. 26, 2021
T. Rowe Price Retirement Blend 2065 Fund - Investor Class | After Taxes on Distributions    
Prospectus [Line Items]    
Average Annual Return, Percent 14.36% 4.31%
T. Rowe Price Retirement Blend 2065 Fund - Investor Class | After Taxes on Distributions and Sales    
Prospectus [Line Items]    
Average Annual Return, Percent 9.13% 3.64%
T. Rowe Price Retirement Blend 2065 Fund - I Class    
Prospectus [Line Items]    
Average Annual Return, Percent 15.04% 5.04%
Performance Inception Date   Jul. 26, 2021
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