v3.25.2
Fees and Expenses
Jul. 25, 2025
T. Rowe Price Retirement Blend 2005 Fund  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses
Expense Narrative [Text Block]

This table describes the fees and expenses that you may pay if you buy, hold, and sell shares of the fund. You may also incur brokerage commissions and other charges when buying or selling shares of the fund, which are not reflected in the table or example below.
Shareholder Fees Caption [Optional Text] Shareholder fees (fees paid directly from your investment)
Shareholder Fees [Table]
Fees and Expenses of the Fund          
  Investor
Class		 I
Class		  
Shareholder fees (fees paid directly from your investment)  
Maximum account fee $20 a  —    
 
Operating Expenses Caption [Optional Text] Annual fund operating expenses (expenses that you pay each year as a percentage of the value of your investment)
Annual Fund Operating Expenses [Table]
       
Management fees  0.34 %  0.19 %  
           
Other expenses  —    —    
           
           
           
Total annual fund operating expenses  0.34    0.19    
Expense Footnotes [Text Block]

 

a  Subject to certain exceptions and account minimums, accounts are charged an annual $20 fee.
Expense Example [Heading] Example
Expense Example Narrative [Text Block]

This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods, that your investment has a 5% return each year, and that the fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example, With Redemption [Table]
  1 Year 3 Years 5 Years 10 Years
 Investor Class $ 35   $ 109   $ 191   $ 431  
 I Class   19     61     107     243  
Portfolio Turnover [Heading] Portfolio Turnover
Portfolio Turnover [Text Block]

The fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when the fund’s shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the fund’s performance. During the most recent fiscal year, the fund’s portfolio turnover rate was 43.2% of the average value of its portfolio.
Portfolio Turnover, Rate 43.20%
T. Rowe Price Retirement Blend 2010 Fund  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses
Expense Narrative [Text Block]

This table describes the fees and expenses that you may pay if you buy, hold, and sell shares of the fund. You may also incur brokerage commissions and other charges when buying or selling shares of the fund, which are not reflected in the table or example below.
Shareholder Fees Caption [Optional Text] Shareholder fees (fees paid directly from your investment)
Shareholder Fees [Table]
Fees and Expenses of the Fund      
  Investor
Class		 I
Class
Shareholder fees (fees paid directly from your investment)
Maximum account fee $20 a  —  
         
Operating Expenses Caption [Optional Text] Annual fund operating expenses (expenses that you pay each year as a percentage of the value of your investment)
Annual Fund Operating Expenses [Table]
       
Management fees 0.34 % 0.19 %  
           
Other expenses —   —  
           
Total annual fund operating expenses 0.34 0.19  

   
Expense Footnotes [Text Block]
a Subject to certain exceptions and account minimums, accounts are charged an annual $20 fee.
Expense Example [Heading] Example
Expense Example Narrative [Text Block]

This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods, that your investment has a 5% return each year, and that the fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example, With Redemption [Table]
  1 Year 3 Years 5 Years 10 Years
 Investor Class $ 35   $ 109   $ 191   $ 431  
 I Class   19     61     107     243  
                 
Portfolio Turnover [Heading] Portfolio Turnover
Portfolio Turnover [Text Block]

The fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when the fund’s shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the fund’s performance. During the most recent fiscal year, the fund’s portfolio turnover rate was 39.6% of the average value of its portfolio.
Portfolio Turnover, Rate 39.60%
T. Rowe Price Retirement Blend 2015 Fund  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses
Expense Narrative [Text Block]

This table describes the fees and expenses that you may pay if you buy, hold, and sell shares of the fund. You may also incur brokerage commissions and other charges when buying or selling shares of the fund, which are not reflected in the table or example below.
Shareholder Fees Caption [Optional Text] Shareholder fees (fees paid directly from your investment)
Shareholder Fees [Table]
Fees and Expenses of the Fund        
  Investor
Class		 I 
Class
Shareholder fees (fees paid directly from your investment)
Maximum account fee $20 a  —  
Operating Expenses Caption [Optional Text] Annual fund operating expenses (expenses that you pay each year as a percentage of the value of your investment)
Annual Fund Operating Expenses [Table]
     
Management fees  0.34 %b  0.19 %
         
Other expenses   —     —  
         
Total annual fund operating expenses  0.34    0.19  
         
Expense Footnotes [Text Block]
aSubject to certain exceptions and account minimums, accounts are charged an annual $20 fee.

   
Expense Example [Heading] Example
Expense Example Narrative [Text Block]

This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods, that your investment has a 5% return each year, and that the fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example, With Redemption [Table]
  1 Year 3 Years 5 Years 10 Years
 Investor Class $ 35 $ 109 $ 191 $ 431
 I Class   19   61   107   243
                 
Portfolio Turnover [Heading] Portfolio Turnover
Portfolio Turnover [Text Block]

The fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when the fund’s shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the fund’s performance. During the most recent fiscal year, the fund’s portfolio turnover rate was 32.4% of the average value of its portfolio.
Portfolio Turnover, Rate 32.40%
T. Rowe Price Retirement Blend 2020 Fund  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses
Expense Narrative [Text Block]

This table describes the fees and expenses that you may pay if you buy, hold, and sell shares of the fund. You may also incur brokerage commissions and other charges when buying or selling shares of the fund, which are not reflected in the table or example below.
Shareholder Fees Caption [Optional Text] Shareholder fees (fees paid directly from your investment)
Shareholder Fees [Table]
Fees and Expenses of the Fund            
    Investor
Class		 I
Class		  
Shareholder fees (fees paid directly from your investment)  
Maximum account fee   $20 a  —    
             
Operating Expenses Caption [Optional Text] Annual fund operating expenses (expenses that you pay each year as a percentage of the value of your investment)
Annual Fund Operating Expenses [Table]
       
Management fees  0.35 %b  0.20 %b  
             
Other expenses  —    —    
             
Total annual fund operating expenses  0.35    0.20    
Expense Footnotes [Text Block]

 

a Subject to certain exceptions and account minimums, accounts are charged an annual $20 fee.
b The management fee will decline over time in accordance with a predetermined contractual fee schedule, which is set forth under “The Management Fee” in section 2 of the fund’s prospectus, with any annual decrease occurring after the end of the fund’s fiscal year. The fee schedule can only be changed with approval by the fund’s Board of Directors, and, if required by SEC rules, the fund’s shareholders.
Expense Example [Heading] Example
Expense Example Narrative [Text Block]

This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods, that your investment has a 5% return each year, and that the fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example, With Redemption [Table]
  1 Year 3 Years 5 Years 10 Years
 Investor Class $ 36 $ 113 $ 196 $ 436
 I Class   20   64   113   248
Portfolio Turnover [Heading] Portfolio Turnover
Portfolio Turnover [Text Block]

The fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when the fund’s shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the fund’s performance. During the most recent fiscal year, the fund’s portfolio turnover rate was 28.6% of the average value of its portfolio.
Portfolio Turnover, Rate 28.60%
T. Rowe Price Retirement Blend 2025 Fund  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses
Expense Narrative [Text Block]

This table describes the fees and expenses that you may pay if you buy, hold, and sell shares of the fund. You may also incur brokerage commissions and other charges when buying or selling shares of the fund, which are not reflected in the table or example below.
Shareholder Fees Caption [Optional Text] Shareholder fees (fees paid directly from your investment)
Shareholder Fees [Table]
Fees and Expenses of the Fund          
  Investor
Class		 I
Class		  
Shareholder fees (fees paid directly from your investment)
Maximum account fee $20 a —    
Operating Expenses Caption [Optional Text] Annual fund operating expenses (expenses that you pay each year as a percentage of the value of your investment)
Annual Fund Operating Expenses [Table]
       
Management fees  0.37 %b  0.21 %b  
           
Other expenses  —    —    
           
           
Total annual fund operating expenses  0.37    0.21    
Expense Footnotes [Text Block]

 

a Subject to certain exceptions and account minimums, accounts are charged an annual $20 fee.
b The management fee will decline over time in accordance with a predetermined contractual fee schedule, which is set forth under “The Management Fee” in section 2 of the fund’s prospectus, with any annual decrease occurring after the end of the fund’s fiscal year. The fee schedule can only be changed with approval by the fund’s Board of Directors, and, if required by SEC rules, the fund’s shareholders.
Expense Example [Heading] Example
Expense Example Narrative [Text Block]

This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods, that your investment has a 5% return each year, and that the fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example, With Redemption [Table]
  1 Year 3 Years 5 Years 10 Years  
 Investor Class $ 38 $ 119 $ 206 $ 452  
 I Class   22   68   118   260  
                   
Portfolio Turnover [Heading] Portfolio Turnover
Portfolio Turnover [Text Block]

The fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when the fund’s shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the fund’s performance. During the most recent fiscal year, the fund’s portfolio turnover rate was 23.0% of the average value of its portfolio.
Portfolio Turnover, Rate 23.00%
T. Rowe Price Retirement Blend 2030 Fund  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses
Expense Narrative [Text Block]

This table describes the fees and expenses that you may pay if you buy, hold, and sell shares of the fund. You may also incur brokerage commissions and other charges when buying or selling shares of the fund, which are not reflected in the table or example below.
Shareholder Fees Caption [Optional Text] Shareholder fees (fees paid directly from your investment)
Shareholder Fees [Table]
Fees and Expenses of the Fund        
  Investor
Class		 I 
Class
Shareholder fees (fees paid directly from your investment)
Maximum account fee $20 a —  
Operating Expenses Caption [Optional Text] Annual fund operating expenses (expenses that you pay each year as a percentage of the value of your investment)
Annual Fund Operating Expenses [Table]
     
Management fees  0.38 %b  0.22 %b
         
Other expenses   —     —  
         
Total annual fund operating expenses  0.38    0.22  
         
Expense Footnotes [Text Block]
aSubject to certain exceptions and account minimums, accounts are charged an annual $20 fee.

b The management fee will decline over time in accordance with a predetermined contractual fee schedule, which is set forth under “The Management Fee” in section 2 of the fund’s prospectus, with any annual decrease occurring after the end of the fund’s fiscal year. The fee schedule can only be changed with approval by the fund’s Board of Directors, and, if required by SEC rules, the fund’s shareholders.
Expense Example [Heading] Example
Expense Example Narrative [Text Block]

This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods, that your investment has a 5% return each year, and that the fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example, With Redemption [Table]
  1 Year 3 Years 5 Years 10 Years
 Investor Class $ 39 $ 122 $ 213 $ 471
 I Class   23   71   124   273
                 

Portfolio Turnover [Heading] Portfolio Turnover
Portfolio Turnover [Text Block]

The fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when the fund’s shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the fund’s performance. During the most recent fiscal year, the fund’s portfolio turnover rate was 22.3% of the average value of its portfolio.
Portfolio Turnover, Rate 22.30%
T. Rowe Price Retirement Blend 2035 Fund  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses
Expense Narrative [Text Block]

This table describes the fees and expenses that you may pay if you buy, hold, and sell shares of the fund. You may also incur brokerage commissions and other charges when buying or selling shares of the fund, which are not reflected in the table or example below.
Shareholder Fees Caption [Optional Text] Shareholder fees (fees paid directly from your investment)
Shareholder Fees [Table]
Fees and Expenses of the Fund      
  Investor
Class		 I
Class		  
Shareholder fees (fees paid directly from your investment)
Maximum account fee $20 a —  
Operating Expenses Caption [Optional Text] Annual fund operating expenses (expenses that you pay each year as a percentage of the value of your investment)
Annual Fund Operating Expenses [Table]
       
Management fees 0.40 %b 0.23 %b  
           
Other expenses —   —  
           
Total annual fund operating expenses 0.40 0.23  
Expense Footnotes [Text Block]
             
a Subject to certain exceptions and account minimums, accounts are charged an annual $20 fee.
b The management fee will decline over time in accordance with a predetermined contractual fee schedule, which is set forth under “The Management Fee” in section 2 of the fund’s prospectus, with any annual decrease occurring after the end of the fund’s fiscal year. The fee schedule can only be changed with approval by the fund’s Board of Directors, and, if required by SEC rules, the fund’s shareholders.

 
Expense Example [Heading] Example
Expense Example Narrative [Text Block]

This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods, that your investment has a 5% return each year, and that the fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example, With Redemption [Table]
  1 Year 3 Years 5 Years 10 Years  
 Investor Class $ 41 $ 128 $ 223 $ 489  
 I Class   24   74   129   285  
                   
Portfolio Turnover [Heading] Portfolio Turnover
Portfolio Turnover [Text Block]

The fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when the fund’s shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the fund’s performance. During the most recent fiscal year, the fund’s portfolio turnover rate was 19.2% of the average value of its portfolio.
Portfolio Turnover, Rate 19.20%
T. Rowe Price Retirement Blend 2040 Fund  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses
Expense Narrative [Text Block]

This table describes the fees and expenses that you may pay if you buy, hold, and sell shares of the fund. You may also incur brokerage commissions and other charges when buying or selling shares of the fund, which are not reflected in the table or example below.
Shareholder Fees Caption [Optional Text] Shareholder fees (fees paid directly from your investment)
Shareholder Fees [Table]
Fees and Expenses of the Fund          
  Investor
Class		 I
Class		  
Shareholder fees (fees paid directly from your investment)  
Maximum account fee $20 a —    
Operating Expenses Caption [Optional Text] Annual fund operating expenses (expenses that you pay each year as a percentage of the value of your investment)
Annual Fund Operating Expenses [Table]
       
Management fees  0.41 %b  0.24 %b  
           
Other expenses  —    —    
           
Total annual fund operating expenses  0.41    0.24    
Expense Footnotes [Text Block]

 

a Subject to certain exceptions and account minimums, accounts are charged an annual $20 fee.
b The management fee will decline over time in accordance with a predetermined contractual fee schedule, which is set forth under “The Management Fee” in section 2 of the fund’s prospectus, with any annual decrease occurring after the end of the fund’s fiscal year. The fee schedule can only be changed with approval by the fund’s Board of Directors, and, if required by SEC rules, the fund’s shareholders.

 
Expense Example [Heading] Example
Expense Example Narrative [Text Block]

This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods, that your investment has a 5% return each year, and that the fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

 
Expense Example, With Redemption [Table]
  1 Year 3 Years 5 Years 10 Years
 Investor Class $ 42 $ 132 $ 230 $ 508
 I Class   25   77   135   298

 
Portfolio Turnover [Heading] Portfolio Turnover
Portfolio Turnover [Text Block]

The fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when the fund’s shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the fund’s performance. During the most recent fiscal year, the fund’s portfolio turnover rate was 17.3% of the average value of its portfolio.
Portfolio Turnover, Rate 17.30%
T. Rowe Price Retirement Blend 2045 Fund  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses
Expense Narrative [Text Block]

This table describes the fees and expenses that you may pay if you buy, hold, and sell shares of the fund. You may also incur brokerage commissions and other charges when buying or selling shares of the fund, which are not reflected in the table or example below.
Shareholder Fees Caption [Optional Text] Shareholder fees (fees paid directly from your investment)
Shareholder Fees [Table]
Fees and Expenses of the Fund        
  Investor
Class		 I 
Class
Shareholder fees (fees paid directly from your investment)
Maximum account fee $20 a —  
Operating Expenses Caption [Optional Text] Annual fund operating expenses (expenses that you pay each year as a percentage of the value of your investment)
Annual Fund Operating Expenses [Table]
     
Management fees  0.41 %b  0.24 %b
         
Other expenses   —     —  
         
Total annual fund operating expenses  0.41    0.24  
         
Expense Footnotes [Text Block]
aSubject to certain exceptions and account minimums, accounts are charged an annual $20 fee.

b The management fee will decline over time in accordance with a predetermined contractual fee schedule, which is set forth under “The Management Fee” in section 2 of the fund’s prospectus, with any annual decrease occurring after the end of the fund’s fiscal year. The fee schedule can only be changed with approval by the fund’s Board of Directors, and, if required by SEC rules, the fund’s shareholders.
Expense Example [Heading] Example
Expense Example Narrative [Text Block]

This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods, that your investment has a 5% return each year, and that the fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

 
Expense Example, With Redemption [Table]
  1 Year 3 Years 5 Years 10 Years
 Investor Class $ 42 $ 132 $ 230 $ 517
 I Class   25   77   135   305
                 

Portfolio Turnover [Heading] Portfolio Turnover
Portfolio Turnover [Text Block]

The fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when the fund’s shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the fund’s performance. During the most recent fiscal year, the fund’s portfolio turnover rate was 19.0% of the average value of its portfolio.
Portfolio Turnover, Rate 19.00%
T. Rowe Price Retirement Blend 2050 Fund  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses
Expense Narrative [Text Block]

This table describes the fees and expenses that you may pay if you buy, hold, and sell shares of the fund. You may also incur brokerage commissions and other charges when buying or selling shares of the fund, which are not reflected in the table or example below.
Shareholder Fees Caption [Optional Text] Shareholder fees (fees paid directly from your investment)
Shareholder Fees [Table]
Fees and Expenses of the Fund        
  Investor
Class		 I
Class
Shareholder fees (fees paid directly from your investment)
Maximum account fee $20 a —    
Operating Expenses Caption [Optional Text] Annual fund operating expenses (expenses that you pay each year as a percentage of the value of your investment)
Annual Fund Operating Expenses [Table]
       
Management fees  0.43 %b  0.25 %b  
           
Other expenses  —    —    
           
Total annual fund operating expenses  0.43    0.25    
Expense Footnotes [Text Block]

 

a Subject to certain exceptions and account minimums, accounts are charged an annual $20 fee.
b The management fee will decline over time in accordance with a predetermined contractual fee schedule, which is set forth under “The Management Fee” in section 2 of the fund’s prospectus, with any annual decrease occurring after the end of the fund’s fiscal year. The fee schedule can only be changed with approval by the fund’s Board of Directors, and, if required by SEC rules, the fund’s shareholders.
Expense Example [Heading] Example
Expense Example Narrative [Text Block]

This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods, that your investment has a 5% return each year, and that the fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

 
Expense Example, With Redemption [Table]
  1 Year 3 Years 5 Years 10 Years
 Investor Class $ 44 $ 138 $ 239 $ 527
 I Class   26   80   141   311
                 
Portfolio Turnover [Heading] Portfolio Turnover
Portfolio Turnover [Text Block]

The fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when the fund’s shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the fund’s performance. During the most recent fiscal year, the fund’s portfolio turnover rate was 14.0% of the average value of its portfolio.
Portfolio Turnover, Rate 14.00%
T. Rowe Price Retirement Blend 2055 Fund  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses
Expense Narrative [Text Block]

This table describes the fees and expenses that you may pay if you buy, hold, and sell shares of the fund. You may also incur brokerage commissions and other charges when buying or selling shares of the fund, which are not reflected in the table or example below.
Shareholder Fees Caption [Optional Text] Shareholder fees (fees paid directly from your investment)
Shareholder Fees [Table]
Fees and Expenses of the Fund        
  Investor
Class		 I 
Class
Shareholder fees (fees paid directly from your investment)
Maximum account fee $20 a —  
Operating Expenses Caption [Optional Text] Annual fund operating expenses (expenses that you pay each year as a percentage of the value of your investment)
Annual Fund Operating Expenses [Table]
         
Management fees  0.43 %b  0.25 %b
         
Other expenses   —     —  
         
Total annual fund operating expenses  0.43    0.25  
         
Expense Footnotes [Text Block]
aSubject to certain exceptions and account minimums, accounts are charged an annual $20 fee.

b The management fee will decline over time in accordance with a predetermined contractual fee schedule, which is set forth under “The Management Fee” in section 2 of the fund’s prospectus, with any annual decrease occurring after the end of the fund’s fiscal year. The fee schedule can only be changed with approval by the fund’s Board of Directors, and, if required by SEC rules, the fund’s shareholders.
Expense Example [Heading] Example
Expense Example Narrative [Text Block]

This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods, that your investment has a 5% return each year, and that the fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example, With Redemption [Table]
  1 Year 3 Years 5 Years 10 Years
 Investor Class $ 44 $ 138 $ 241 $ 540
 I Class   26   80   141   318
                 

Portfolio Turnover [Heading] Portfolio Turnover
Portfolio Turnover [Text Block]

The fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when the fund’s shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the fund’s performance. During the most recent fiscal year, the fund’s portfolio turnover rate was 15.5% of the average value of its portfolio.
Portfolio Turnover, Rate 15.50%
T. Rowe Price Retirement Blend 2060 Fund  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses
Expense Narrative [Text Block]

This table describes the fees and expenses that you may pay if you buy, hold, and sell shares of the fund. You may also incur brokerage commissions and other charges when buying or selling shares of the fund, which are not reflected in the table or example below.
Shareholder Fees Caption [Optional Text] Shareholder fees (fees paid directly from your investment)
Shareholder Fees [Table]
Fees and Expenses of the Fund        
  Investor
Class		 I 
Class
Shareholder fees (fees paid directly from your investment)
Maximum account fee $20 a —  
a
Operating Expenses Caption [Optional Text] Annual fund operating expenses (expenses that you pay each year as a percentage of the value of your investment)
Annual Fund Operating Expenses [Table]
         
Management fees  0.44 %b  0.26 %b
         
Other expenses   —     —  
         
Total annual fund operating expenses  0.44    0.26  
         
Expense Footnotes [Text Block]
aSubject to certain exceptions and account minimums, accounts are charged an annual $20 fee.

b The management fee will decline over time in accordance with a predetermined contractual fee schedule, which is set forth under “The Management Fee” in section 2 of the fund’s prospectus, with any annual decrease occurring after the end of the fund’s fiscal year. The fee schedule can only be changed with approval by the fund’s Board of Directors, and, if required by SEC rules, the fund’s shareholders.
Expense Example [Heading] Example
Expense Example Narrative [Text Block]

This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods, that your investment has a 5% return each year, and that the fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example, With Redemption [Table]
  1 Year 3 Years 5 Years 10 Years
 Investor Class $ 45 $ 141 $ 246 $ 547
 I Class   27   84   146   323
Portfolio Turnover [Heading] Portfolio Turnover
Portfolio Turnover [Text Block]

The fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when the fund’s shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the fund’s performance. During the most recent fiscal year, the fund’s portfolio turnover rate was 17.9% of the average value of its portfolio.
Portfolio Turnover, Rate 17.90%
T. Rowe Price Retirement Blend 2065 Fund  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses
Expense Narrative [Text Block]

This table describes the fees and expenses that you may pay if you buy, hold, and sell shares of the fund. You may also incur brokerage commissions and other charges when buying or selling shares of the fund, which are not reflected in the table or example below.
Shareholder Fees Caption [Optional Text] Shareholder fees (fees paid directly from your investment)
Shareholder Fees [Table]
           
           
  Investor 
Class		 I
Class		  
Shareholder fees (fees paid directly from your investment)  
Maximum account fee $20 a —    
Operating Expenses Caption [Optional Text] Annual fund operating expenses (expenses that you pay each year as a percentage of the value of your investment)
Annual Fund Operating Expenses [Table]
           
Management fees  0.44 %b  0.26 %b  
             
Other expenses   —     —    
             
             
             
Total annual fund operating expenses  0.44    0.26    
             
Expense Footnotes [Text Block]
a Subject to certain exceptions and account minimums, accounts are charged an annual $20 fee.
b The management fee will decline over time in accordance with a predetermined contractual fee schedule, which is set forth under “The Management Fee” in section 2 of the fund’s prospectus, with any annual decrease occurring after the end of the fund’s fiscal year. The fee schedule can only be changed with approval by the fund’s Board of Directors, and, if required by SEC rules, the fund’s shareholders.
Expense Example [Heading] Example
Expense Example Narrative [Text Block]

This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods, that your investment has a 5% return each year, and that the fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example, With Redemption [Table]
  1 Year 3 Years 5 Years 10 Years  
 Investor Class $ 45 $ 141 $ 246 $ 554  
 I Class   27   84   146   330  
                   
Portfolio Turnover [Heading] Portfolio Turnover
Portfolio Turnover [Text Block]

The fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when the fund’s shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the fund’s performance. During the most recent fiscal year, the fund’s portfolio turnover rate was 10.0% of the average value of its portfolio.
Portfolio Turnover, Rate 10.00%
T. Rowe Price Retirement Blend 2070 Fund  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses
Expense Narrative [Text Block]

This table describes the fees and expenses that you may pay if you buy, hold, and sell shares of the fund. You may also incur brokerage commissions and other charges when buying or selling shares of the fund, which are not reflected in the table or example below.
Shareholder Fees Caption [Optional Text] Shareholder fees (fees paid directly from your investment)
Shareholder Fees [Table]
Fees and Expenses of the Fund          
  Investor
Class		 I
Class		  
Shareholder fees (fees paid directly from your investment)
Maximum account fee $20 a —    
Operating Expenses Caption [Optional Text] Annual fund operating expenses (expenses that you pay each year as a percentage of the value of your investment)
Annual Fund Operating Expenses [Table]
           
Management fees  0.44 %b  0.26 %b  
           
Other expenses  —    —    
           
Total annual fund operating expenses  0.44    0.26    
Expense Footnotes [Text Block]

 

a Subject to certain exceptions and account minimums, accounts are charged an annual $20 fee.
b The management fee will decline over time in accordance with a predetermined contractual fee schedule, which is set forth under “The Management Fee” in section 2 of the fund’s prospectus, with any annual decrease occurring after the end of the fund’s fiscal year. The fee schedule can only be changed with approval by the fund’s Board of Directors, and, if required by SEC rules, the fund’s shareholders.
Expense Example [Heading] Example
Expense Example Narrative [Text Block]

This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods, that your investment has a 5% return each year, and that the fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example, With Redemption [Table]
  1 Year 3 Years 5 Years 10 Years  
 Investor Class $ 45 $ 141 $ 246 $ 555  
 I Class   27   84   146   331  
Portfolio Turnover [Heading] Portfolio Turnover
Portfolio Turnover [Text Block]

The fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when the fund’s shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the fund’s performance. Because the fund commenced operations after the end of its most recent fiscal year, there is no portfolio turnover rate shown for the fund.