Annual Fund Operating Expenses |
Jul. 27, 2026 |
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| T. Rowe Price Spectrum Moderate Allocation Fund-Investor Class | ||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||
| Management Fees (as a percentage of Assets) | 0.53% | |||||||||||||||
| Other Expenses (as a percentage of Assets): | 0.19% | |||||||||||||||
| Acquired Fund Fees and Expenses | 0.21% | |||||||||||||||
| Expenses (as a percentage of Assets) | 0.93% | [1] | ||||||||||||||
| Fee Waiver or Reimbursement | (0.17%) | [2] | ||||||||||||||
| Net Expenses (as a percentage of Assets) | 0.76% | [1] | ||||||||||||||
| T. Rowe Price Spectrum Moderate Allocation Fund-I Class | ||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||
| Management Fees (as a percentage of Assets) | 0.53% | |||||||||||||||
| Other Expenses (as a percentage of Assets): | 0.05% | |||||||||||||||
| Acquired Fund Fees and Expenses | 0.21% | |||||||||||||||
| Expenses (as a percentage of Assets) | 0.79% | [1] | ||||||||||||||
| Fee Waiver or Reimbursement | (0.17%) | [2] | ||||||||||||||
| Net Expenses (as a percentage of Assets) | 0.62% | [1] | ||||||||||||||
| T. Rowe Price Spectrum Moderate Growth Allocation Fund-Investor Class | ||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||
| Management Fees (as a percentage of Assets) | 0.58% | |||||||||||||||
| Other Expenses (as a percentage of Assets): | 0.18% | |||||||||||||||
| Acquired Fund Fees and Expenses | 0.16% | |||||||||||||||
| Expenses (as a percentage of Assets) | 0.92% | [3] | ||||||||||||||
| Fee Waiver or Reimbursement | (0.14%) | [4] | ||||||||||||||
| Net Expenses (as a percentage of Assets) | 0.78% | [3] | ||||||||||||||
| T. Rowe Price Spectrum Moderate Growth Allocation Fund-I Class | ||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||
| Management Fees (as a percentage of Assets) | 0.58% | |||||||||||||||
| Other Expenses (as a percentage of Assets): | 0.03% | |||||||||||||||
| Acquired Fund Fees and Expenses | 0.16% | |||||||||||||||
| Expenses (as a percentage of Assets) | 0.77% | [3] | ||||||||||||||
| Fee Waiver or Reimbursement | (0.14%) | [4] | ||||||||||||||
| Net Expenses (as a percentage of Assets) | 0.63% | [3] | ||||||||||||||
| T. Rowe Price Spectrum Conservative Allocation Fund-Investor Class | ||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||
| Management Fees (as a percentage of Assets) | 0.43% | |||||||||||||||
| Other Expenses (as a percentage of Assets): | 0.18% | |||||||||||||||
| Acquired Fund Fees and Expenses | 0.25% | |||||||||||||||
| Expenses (as a percentage of Assets) | 0.86% | [5] | ||||||||||||||
| Fee Waiver or Reimbursement | (0.20%) | [6] | ||||||||||||||
| Net Expenses (as a percentage of Assets) | 0.66% | [5] | ||||||||||||||
| T. Rowe Price Spectrum Conservative Allocation Fund-I Class | ||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||
| Management Fees (as a percentage of Assets) | 0.43% | |||||||||||||||
| Other Expenses (as a percentage of Assets): | 0.05% | [7] | ||||||||||||||
| Acquired Fund Fees and Expenses | 0.25% | |||||||||||||||
| Expenses (as a percentage of Assets) | 0.73% | [5] | ||||||||||||||
| Fee Waiver or Reimbursement | (0.20%) | [6],[7] | ||||||||||||||
| Net Expenses (as a percentage of Assets) | 0.53% | [5],[7] | ||||||||||||||
| Fee Waiver or Reimbursement over Assets, Date of Termination | July 31, 2027 | |||||||||||||||
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