T. Rowe Price Target 2005 Fund Active management/Asset allocation [Member] Investments in other funds [Member] Market conditions [Member] Fixed income exposure [Member] Equity exposure [Member] Foreign investing [Member] Emerging markets [Member] Interest rates [Member] Prepayments and extensions [Member] Credit quality [Member] Market capitalization [Member] Investment style [Member] Inflation [Member] Liquidity [Member] Bank loans [Member] Cybersecurity breaches [Member] T. Rowe Price Target 2010 Fund T. Rowe Price Target 2015 Fund T. Rowe Price Target 2020 Fund T. Rowe Price Target 2025 Fund T. Rowe Price Target 2030 Fund T. Rowe Price Target 2035 Fund T. Rowe Price Target 2040 Fund T. Rowe Price Target 2045 Fund T. Rowe Price Target 2050 Fund T. Rowe Price Target 2055 Fund T. Rowe Price Target 2060 Fund T. Rowe Price Target 2065 Fund T. Rowe Price Target 2070 Fund New fund [Member] T. Rowe Price Target 2005 Fund-Investor Class T. Rowe Price Target 2005 Fund-I Class T. Rowe Price Target 2005 Fund-Advisor Class T. Rowe Price Target 2010 Fund-Investor Class T. Rowe Price Target 2010 Fund-I Class T. Rowe Price Target 2010 Fund-Advisor Class T. Rowe Price Target 2015 Fund-Investor Class T. Rowe Price Target 2015 Fund-I Class T. Rowe Price Target 2015 Fund-Advisor Class T. Rowe Price Target 2020 Fund-Investor Class T. Rowe Price Target 2020 Fund-I Class T. Rowe Price Target 2020 Fund-Advisor Class T. Rowe Price Target 2025 Fund-Investor Class T. Rowe Price Target 2025 Fund-I Class T. Rowe Price Target 2025 Fund-Advisor Class T. Rowe Price Target 2030 Fund-Investor Class T. Rowe Price Target 2030 Fund-I Class T. Rowe Price Target 2030 Fund-Advisor Class T. Rowe Price Target 2035 Fund-Investor Class T. Rowe Price Target 2035 Fund-I Class T. Rowe Price Target 2035 Fund-Advisor Class T. Rowe Price Target 2040 Fund-Investor Class T. Rowe Price Target 2040 Fund-I Class T. Rowe Price Target 2040 Fund-Advisor Class T. Rowe Price Target 2045 Fund-Investor Class T. Rowe Price Target 2045 Fund-I Class T. Rowe Price Target 2045 Fund-Advisor Class T. Rowe Price Target 2050 Fund-Investor Class T. Rowe Price Target 2050 Fund-I Class T. Rowe Price Target 2050 Fund-Advisor Class T. Rowe Price Target 2055 Fund-Investor Class T. Rowe Price Target 2055 Fund-I Class T. Rowe Price Target 2055 Fund-Advisor Class T. Rowe Price Target 2060 Fund-Investor Class T. Rowe Price Target 2060 Fund-I Class T. Rowe Price Target 2060 Fund-Advisor Class T. Rowe Price Target 2065 Fund-Investor Class T. Rowe Price Target 2065 Fund-I Class T. Rowe Price Target 2065 Fund-Advisor Class T. Rowe Price Target 2070 Fund-Investor Class T. Rowe Price Target 2070 Fund-I Class T. Rowe Price Target 2070 Fund-Advisor Class Bloomberg U.S. Aggregate Bond Index (reflects no deduction for fees, expenses, or taxes) S&P Target Date Retirement Income Index (reflects no deduction for fees, expenses, or taxes) S&P Target Date 2010 Index (reflects no deduction for fees, expenses, or taxes) Russell 3000® Index (reflects no deduction for fees, expenses, or taxes) S&P Target Date 2045 Index (reflects no deduction for fees, expenses, or taxes) S&P Target Date 2065+ Index (reflects no deduction for fees, expenses, or taxes) S&P Target Date 2015 Index (reflects no deduction for fees, expenses, or taxes) S&P Target Date 2020 Index (reflects no deduction for fees, expenses, or taxes) S&P Target Date 2025 Index (reflects no deduction for fees, expenses, or taxes) S&P Target Date 2030 Index (reflects no deduction for fees, expenses, or taxes) S&P Target Date 2035 Index (reflects no deduction for fees, expenses, or taxes) S&P Target Date 2040 Index (reflects no deduction for fees, expenses, or taxes) S&P Target Date 2050 Index (reflects no deduction for fees, expenses, or taxes) S&P Target Date 2055 Index (reflects no deduction for fees, expenses, or taxes) S&P Target Date 2060 Index (reflects no deduction for fees, expenses, or taxes) T. Rowe Price Target 2005 Fund T. Rowe Price Target 2005 Fund-Investor Class T. Rowe Price Target 2005 Fund-Advisor Class T. Rowe Price Target 2005 Fund-I Class T. Rowe Price Target 2010 Fund T. Rowe Price Target 2010 Fund-Investor Class T. Rowe Price Target 2010 Fund-Advisor Class T. Rowe Price Target 2010 Fund-I Class T. Rowe Price Target 2015 Fund T. Rowe Price Target 2015 Fund-Investor Class T. Rowe Price Target 2015 Fund-Advisor Class T. Rowe Price Target 2015 Fund-I Class T. Rowe Price Target 2020 Fund T. Rowe Price Target 2020 Fund-Investor Class T. Rowe Price Target 2020 Fund-Advisor Class T. Rowe Price Target 2020 Fund-I Class T. Rowe Price Target 2025 Fund T. Rowe Price Target 2025 Fund-Advisor Class T. Rowe Price Target 2025 Fund-Investor Class T. Rowe Price Target 2025 Fund-I Class T. Rowe Price Target 2030 Fund T. Rowe Price Target 2030 Fund-Investor Class T. Rowe Price Target 2030 Fund-Advisor Class T. Rowe Price Target 2030 Fund-I Class T. Rowe Price Target 2035 Fund T. Rowe Price Target 2035 Fund-Investor Class T. Rowe Price Target 2035 Fund-Advisor Class T. Rowe Price Target 2035 Fund-I Class T. Rowe Price Target 2040 Fund T. Rowe Price Target 2040 Fund-Investor Class T. Rowe Price Target 2040 Fund-Advisor Class T. Rowe Price Target 2040 Fund-I Class T. Rowe Price Target 2045 Fund T. Rowe Price Target 2045 Fund-Investor Class T. Rowe Price Target 2045 Fund-Advisor Class T. Rowe Price Target 2045 Fund-I Class T. Rowe Price Target 2050 Fund T. Rowe Price Target 2050 Fund-Investor Class T. Rowe Price Target 2050 Fund-Advisor Class T. Rowe Price Target 2050 Fund-I Class T. Rowe Price Target 2055 Fund T. Rowe Price Target 2055 Fund-Investor Class T. Rowe Price Target 2055 Fund-Advisor Class T. Rowe Price Target 2055 Fund-I Class T. Rowe Price Target 2060 Fund T. Rowe Price Target 2060 Fund-Investor Class T. Rowe Price Target 2060 Fund-Advisor Class T. Rowe Price Target 2060 Fund-I Class T. Rowe Price Target 2065 Fund T. Rowe Price Target 2065 Fund-Advisor Class T. Rowe Price Target 2065 Fund-I Class T. Rowe Price Target 2065 Fund-Investor Class Investments in other funds. Active management/Asset allocation. Equity exposure. Market conditions. Foreign investing. Fixed income exposure. Cybersecurity breaches. Bank loans. Liquidity. Inflation. Credit quality. Prepayments and extensions. Interest rates. Investment style. Market capitalization. Emerging markets. Bloomberg U.S. Aggregate Bond Index (reflects no deduction for fees, expenses, or taxes) S&P Target Date Retirement Income Index (reflects no deduction for fees, expenses, or taxes) S&P Target Date 2010 Index (reflects no deduction for fees, expenses, or taxes) S&P Target Date 2015 Index (reflects no deduction for fees, expenses, or taxes) S&P Target Date 2020 Index (reflects no deduction for fees, expenses, or taxes) Russell 3000® Index (reflects no deduction for fees, expenses, or taxes) S&P Target Date 2025 Index (reflects no deduction for fees, expenses, or taxes) S&P Target Date 2030 Index (reflects no deduction for fees, expenses, or taxes) S&P Target Date 2035 Index (reflects no deduction for fees, expenses, or taxes) S&P Target Date 2040 Index (reflects no deduction for fees, expenses, or taxes) S&P Target Date 2045 Index (reflects no deduction for fees, expenses, or taxes) S&P Target Date 2050 Index (reflects no deduction for fees, expenses, or taxes) S&P Target Date 2055 Index (reflects no deduction for fees, expenses, or taxes) S&P Target Date 2060 Index (reflects no deduction for fees, expenses, or taxes) S&P Target Date 2065+ Index (reflects no deduction for fees, expenses, or taxes) T. Rowe Price Target 2070 Fund T. Rowe Price Target 2070 Fund-Investor Class T. Rowe Price Target 2070 Fund-I Class T. Rowe Price Target 2070 Fund-Advisor Class New fund.