v3.26.1
Performance Management
Jul. 27, 2026
T. Rowe Price Spectrum Moderate Allocation Fund  
Prospectus [Line Items]  
Bar Chart and Performance Table [Heading] Performance
Performance Narrative [Text Block]

The following performance information provides some indication of the risks of investing in the fund. The fund’s performance information represents only past performance (before and after taxes) and is not necessarily an indication of future results.

 

The following bar chart illustrates how much returns can differ from year to year by showing calendar year returns and the best and worst calendar quarter returns during those years for the fund’s Investor Class. Returns for other share classes vary since they have different expenses.
Performance Past Does Not Indicate Future [Text] The fund’s performance information represents only past performance (before and after taxes) and is not necessarily an indication of future results.
Performance Information Illustrates Variability of Returns [Text] The following performance information provides some indication of the risks of investing in the fund.The following bar chart illustrates how much returns can differ from year to year by showing calendar year returns and the best and worst calendar quarter returns during those years for the fund’s Investor Class. Returns for other share classes vary since they have different expenses.The following table shows the average annual total returns for each class of the fund that has been in operation for at least one full calendar year. The fund’s performance information included in the table is compared with a regulatory required index that represents an overall securities market (MSCI All Country World Index Net). In addition, the table may also include one or more indexes that align to the fund’s investment strategy.
Bar Chart [Heading] Calendar Year Returns
Bar Chart [Table]

 

 
Bar Chart Closing [Text Block]
  Quarter
Ended

Total

Return

     Quarter
Ended

Total

Return
Best Quarter 6/30/20 14.86%   Worst Quarter 3/31/20 -14.72%

 

The fund’s return for the six months ended 6/30/26 was 7.65%.

 
Year to Date Return, Label [Optional Text] The fund’s return for the six months ended
Bar Chart, Year to Date Return 7.65%
Bar Chart, Year to Date Return, Date Jun. 30, 2026
Highest Quarterly Return, Label [Optional Text] Best Quarter
Highest Quarterly Return 14.86%
Highest Quarterly Return, Date Jun. 30, 2020
Lowest Quarterly Return, Label [Optional Text] Worst Quarter
Lowest Quarterly Return (14.72%)
Lowest Quarterly Return, Date Mar. 31, 2020
Performance Table Heading Average Annual Total Returns Periods ended December 31, 2025
Performance Table Narrative

The following table shows the average annual total returns for each class of the fund that has been in operation for at least one full calendar year. The fund’s performance information included in the table is compared with a regulatory required index that represents an overall securities market (MSCI All Country World Index Net). In addition, the table may also include one or more indexes that align to the fund’s investment strategy.

 

In addition, the table shows hypothetical after-tax returns to demonstrate how taxes paid by a shareholder may influence returns. After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their fund shares through tax-deferred arrangements, such as a 401(k) account or an IRA. After-tax returns are shown only for the Investor Class and will differ for other share classes.
Performance Table Uses Highest Federal Rate After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred After-tax returns shown are not relevant to investors who hold their fund shares through tax-deferred arrangements, such as a 401(k) account or an IRA.
Performance [Table]

Average Annual Total Returns 

      Periods ended   
      December 31, 2025  
         
                        Since Inception  
      1 Year      5 Years      10 Years      inception date  
  Investor Class                       07/29/1994  
    Returns before taxes 14.51 %   5.92 %   8.11 %   — %    
    Returns after taxes on distributions 11.96     3.90     6.32     —      
    Returns after taxes on distributions and sale                          
    of fund shares 9.73     4.08     6.00     —      
  I Class                       03/23/2016  
    Returns before taxes 14.66     6.06     —     8.46      
                               
  MSCI All Country World Index Net (reflects no deduction for fees or expenses)    
    22.34     11.19     11.72     12.12 b     
  Morningstar Moderate Target Risk Index (reflects no deduction for fees, expenses, or taxes)    
    15.95     5.95     7.83     7.90 b     
  Combined Index Portfolioa  (reflects no deduction for fees or expenses)    
    15.50     7.26     8.51     8.67 b     
  Lipper Mixed-Asset Target Allocation Moderate Funds Index    
    13.60     6.67     7.80     7.94 b     

 

a Combined Index Portfolio is a blended benchmark composed of 60% stocks (42% Russell 3000® Index and 18% MSCI All Country World Index ex USA Net), 30% bonds (Bloomberg U.S. Aggregate Bond Index), and 10% money market securities (FTSE 3-Month Treasury Bill Index) as of 5/31/26. The indices and percentages may vary over time.
b Return since 3/23/16.

 
Performance Table One Class of after Tax Shown [Text] After-tax returns are shown only for the Investor Class and will differ for other share classes.
Index No Deduction for Fees, Expenses, or Taxes [Text] (reflects no deduction for fees or expenses)
Performance Table Closing [Text Block]

Updated performance information is available through troweprice.com.

 
Performance Availability Website Address [Text] troweprice.com
T. Rowe Price Spectrum Moderate Growth Allocation Fund  
Prospectus [Line Items]  
Bar Chart and Performance Table [Heading] Performance
Performance Narrative [Text Block]

The following performance information provides some indication of the risks of investing in the fund. The fund’s performance information represents only past performance (before and after taxes) and is not necessarily an indication of future results.

 

The following bar chart illustrates how much returns can differ from year to year by showing calendar year returns and the best and worst calendar quarter returns during those years for the fund’s Investor Class. Returns for other share classes vary since they have different expenses.
Performance Past Does Not Indicate Future [Text] The fund’s performance information represents only past performance (before and after taxes) and is not necessarily an indication of future results.
Performance Information Illustrates Variability of Returns [Text] The following performance information provides some indication of the risks of investing in the fund.The following bar chart illustrates how much returns can differ from year to year by showing calendar year returns and the best and worst calendar quarter returns during those years for the fund’s Investor Class. Returns for other share classes vary since they have different expenses.The following table shows the average annual total returns for each class of the fund that has been in operation for at least one full calendar year. The fund’s performance information included in the table is compared with a regulatory required index that represents an overall securities market (MSCI All Country World Index Net). In addition, the table may also include one or more indexes that align to the fund’s investment strategy.
Bar Chart [Heading] Calendar Year Returns
Bar Chart [Table]

 
Bar Chart Closing [Text Block]
  Quarter
Ended

Total

Return

     Quarter
Ended

Total

Return
Best Quarter 6/30/20 17.94%   Worst Quarter 3/31/20 -18.31%

 

The fund’s return for the six months ended 6/30/26 was 9.39%.

 
Year to Date Return, Label [Optional Text] The fund’s return for the six months ended
Bar Chart, Year to Date Return 9.39%
Bar Chart, Year to Date Return, Date Jun. 30, 2026
Highest Quarterly Return, Label [Optional Text] Best Quarter
Highest Quarterly Return 17.94%
Highest Quarterly Return, Date Jun. 30, 2020
Lowest Quarterly Return, Label [Optional Text] Worst Quarter
Lowest Quarterly Return (18.31%)
Lowest Quarterly Return, Date Mar. 31, 2020
Performance Table Heading Average Annual Total Returns Periods ended December 31, 2025
Performance Table Narrative

The following table shows the average annual total returns for each class of the fund that has been in operation for at least one full calendar year. The fund’s performance information included in the table is compared with a regulatory required index that represents an overall securities market (MSCI All Country World Index Net). In addition, the table may also include one or more indexes that align to the fund’s investment strategy.

 

In addition, the table shows hypothetical after-tax returns to demonstrate how taxes paid by a shareholder may influence returns. After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their fund shares through tax-deferred arrangements, such as a 401(k) account or an IRA. After-tax returns are shown only for the Investor Class and will differ for other share classes.
Performance Table Uses Highest Federal Rate After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred After-tax returns shown are not relevant to investors who hold their fund shares through tax-deferred arrangements, such as a 401(k) account or an IRA.
Performance [Table]

 

Average Annual Total Returns 

      Periods ended   
      December 31, 2025  
                             
                        Since Inception  
      1 Year      5 Years      10 Years      inception date  
  Investor Class                       07/29/1994  
    Returns before taxes 17.05 %   7.35 %   9.65 %   — %    
    Returns after taxes on distributions 15.15     5.68     8.29     —      
    Returns after taxes on distributions and sale                          
    of fund shares 11.19     5.41     7.54     —      
  I Class                       03/23/2016  
    Returns before taxes 17.23     7.51     —     10.18      
                               
  MSCI All Country World Index Net (reflects no deduction for fees or expenses)    
    22.34     11.19     11.72     12.12 b     
  Morningstar Moderately Aggressive Target Risk Index (reflects no deduction for fees, expenses, or taxes)    
    18.45     7.94     9.59     9.78 b     
  Combined Index Portfolioa (reflects no deduction for fees or expenses)    
    18.71     9.25     10.55     10.81 b     
  Lipper Mixed-Asset Target Allocation Growth Funds Index    
    15.28     7.98     9.33     9.61 b     

 

a Combined Index Portfolio is a blended benchmark composed of 80% stocks (56% Russell 3000® Index and 24% MSCI All Country World Index ex USA Net) and 20% bonds (Bloomberg U.S. Aggregate Bond Index) as of 5/31/26. The indices and percentages may vary over time.
b Return since 3/23/16.

 
Performance Table One Class of after Tax Shown [Text] After-tax returns are shown only for the Investor Class and will differ for other share classes.
Index No Deduction for Fees, Expenses, or Taxes [Text] (reflects no deduction for fees, expenses, or taxes)
Performance Table Closing [Text Block]

Updated performance information is available through troweprice.com.

 
Performance Availability Website Address [Text] troweprice.com
T. Rowe Price Spectrum Conservative Allocation Fund  
Prospectus [Line Items]  
Bar Chart and Performance Table [Heading] Performance
Performance Narrative [Text Block]

The following performance information provides some indication of the risks of investing in the fund. The fund’s performance information represents only past performance (before and after taxes) and is not necessarily an indication of future results.

 

The following bar chart illustrates how much returns can differ from year to year by showing calendar year returns and the best and worst calendar quarter returns during those years for the fund’s Investor Class. Returns for other share classes vary since they have different expenses.
Performance Past Does Not Indicate Future [Text] The fund’s performance information represents only past performance (before and after taxes) and is not necessarily an indication of future results.
Performance Information Illustrates Variability of Returns [Text] The following performance information provides some indication of the risks of investing in the fund.The following bar chart illustrates how much returns can differ from year to year by showing calendar year returns and the best and worst calendar quarter returns during those years for the fund’s Investor Class. Returns for other share classes vary since they have different expenses.The following table shows the average annual total returns for each class of the fund that has been in operation for at least one full calendar year. The fund’s performance information included in the table is compared with a regulatory required index that represents an overall securities market (Bloomberg U.S. Aggregate Bond Index). In addition, the table may also include one or more indexes that align to the fund’s investment strategy.
Bar Chart [Heading] Calendar Year Returns
Bar Chart [Table]

 
Bar Chart Closing [Text Block]
  Quarter
Ended

Total

Return

     Quarter
Ended

Total

Return
Best Quarter 6/30/20 11.70%   Worst Quarter 3/31/20 -11.16%

 

The fund’s return for the six months ended 6/30/26 was 5.95%.

 
Year to Date Return, Label [Optional Text] The fund’s return for the six months ended
Bar Chart, Year to Date Return 5.95%
Bar Chart, Year to Date Return, Date Jun. 30, 2026
Highest Quarterly Return, Label [Optional Text] Best Quarter
Highest Quarterly Return 11.70%
Highest Quarterly Return, Date Jun. 30, 2020
Lowest Quarterly Return, Label [Optional Text] Worst Quarter
Lowest Quarterly Return (11.16%)
Lowest Quarterly Return, Date Mar. 31, 2020
Performance Table Heading Average Annual Total Returns Periods ended December 31, 2025
Performance Table Narrative

The following table shows the average annual total returns for each class of the fund that has been in operation for at least one full calendar year. The fund’s performance information included in the table is compared with a regulatory required index that represents an overall securities market (Bloomberg U.S. Aggregate Bond Index). In addition, the table may also include one or more indexes that align to the fund’s investment strategy.

 

In addition, the table shows hypothetical after-tax returns to demonstrate how taxes paid by a shareholder may influence returns. After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their fund shares through tax-deferred arrangements, such as a 401(k) account or an IRA. After-tax returns are shown only for the Investor Class and will differ for other share classes.

 
Performance Table Uses Highest Federal Rate After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred After-tax returns shown are not relevant to investors who hold their fund shares through tax-deferred arrangements, such as a 401(k) account or an IRA.
Performance [Table]

Average Annual Total Returns 

      Periods ended   
      December 31, 2025  
                             
                        Since Inception  
      1 Year      5 Years      10 Years      inception date  
  Investor Class                       07/29/1994    
    Returns before taxes 11.93 %   4.70 %   6.52 %   — %      
    Returns after taxes on distributions 9.52     2.86     4.95     —        
    Returns after taxes on distributions and sale                            
    of fund shares 7.73     3.02     4.63     —        
  I Class                       03/23/2016    
    Returns before taxes 12.07     4.82     —     6.71        
                                 
  Bloomberg U.S. Aggregate Bond Index (reflects no deduction for fees, expenses, or taxes)      
    7.30     -0.36     2.01     1.79 b       
  Morningstar Moderately Conservative Target Risk Index (reflects no deduction for fees, expenses, or taxes)      
    12.87     4.06     6.10     6.07 b       
  Combined Index Portfolioa (reflects no deduction for fees or expenses)      
    12.34     5.25     6.42     6.49 b       
  Lipper Mixed-Asset Target Allocation Conservative Funds Index      
    10.66     3.90     5.25     5.23 b       

 

a Combined Index Portfolio is a blended benchmark composed of 40% stocks (28% Russell 3000® Index and 12% MSCI All Country World Index ex USA Net), 40% bonds (Bloomberg U.S. Aggregate Bond Index), and 20% money market securities (FTSE 3-Month Treasury Bill Index) as of 5/31/26. The indices and percentages may vary over time.
b Return since 3/23/16.

 
Performance Table One Class of after Tax Shown [Text] After-tax returns are shown only for the Investor Class and will differ for other share classes.
Index No Deduction for Fees, Expenses, or Taxes [Text] (reflects no deduction for fees, expenses, or taxes)
Performance Table Closing [Text Block]

Updated performance information is available through troweprice.com.

 
Performance Availability Website Address [Text] troweprice.com