v3.26.1
Shareholder Report
12 Months Ended
May 31, 2026
USD ($)
Holding
Shareholder Report [Line Items]  
Document Type N-CSR
Amendment Flag false
Registrant Name T. ROWE PRICE RETIREMENT FUNDS, INC.
Entity Central Index Key 0001177017
Entity Investment Company Type N-1A
Document Period End Date May 31, 2026
Shareholder Report Annual or Semi-Annual Annual Shareholder Report
C000129662  
Shareholder Report [Line Items]  
Fund Name Target 2015 Fund
Class Name Investor Class
Trading Symbol TRRTX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Target 2015 Fund (the "fund") for the period of June 1, 2025 to May 31, 2026.
Additional Information [Text Block] You can find the fund’s prospectus, financial information on Form N‑CSR (which includes required tax information for dividends), holdings, proxy voting information, and other information atwww.troweprice.com/prospectus. You can also request this information without charge by contacting T. Rowe Price at 1‑800‑638‑5660 or info@troweprice.com or contacting your intermediary.
Material Fund Change Notice [Text Block]  
Additional Information Phone Number 1‑800‑638‑5660
Additional Information Email <span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 13.3333px; font-weight: 400; grid-area: auto; line-height: 17.3333px; margin: 0px; overflow: visible; text-align: justify; text-align-last: left; white-space-collapse: preserve-breaks;">info@troweprice.com</span>
Additional Information Website www.troweprice.com/prospectus
Expenses [Text Block]

What were the fund costs for the last year? (based on a hypothetical $10,000 investment)

Table Summary
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Target 2015 Fund - Investor Class
$48
0.45%
Expenses Paid, Amount $ 48
Expense Ratio, Percent 0.45%
Factors Affecting Performance [Text Block]

What drove fund performance during the past 12 months?

  • Global stock indexes and fixed income markets generated strong returns for the 12 months ended May 31, 2026. Equities were supported by solid corporate earnings, enthusiasm for artificial intelligence and semiconductor-related investments, and periods of easing monetary policy as major central banks, including the Federal Reserve, reduced interest rates in late 2025. Despite volatility from shifting U.S. tariff policies and the U.S.-Iran conflict, markets recovered as ceasefire progress reduced energy-price pressures and improved investor sentiment, while fixed income benefited from declining yields, resilient credit markets, and easing geopolitical risks.

  • Compared with the style-specific S&P Target Date 2015 Index, glide path effect contributed to results for the period. Despite bouts of volatility, global equity markets advanced significantly over the year, and the fund’s greater total equity exposure versus the benchmark was beneficial. Additionally, an overweight allocation to emerging markets equities, which strongly outpaced international developed markets, had a positive impact on relative results.

  • Conversely, security selection within some of the underlying portfolios detracted from relative results, including allocations to U.S. large-cap value, core, and growth stocks.

  • The fund seeks the highest total return over time consistent with an emphasis on both capital growth and income. The fund invests in a diversified portfolio of other T. Rowe Price stock and bond mutual funds that represent various asset classes and sectors. Its allocation among T. Rowe Price funds will change over time in relation to its target retirement date.

Performance Past Does Not Indicate Future [Text] The fund’s past performance is not a good predictor of the fund’s future performance.
Line Graph [Table Text Block]
A line chart as described in the following paragraph. 

Investor Class 18,496 
Regulatory Benchmark 11,836 
Strategy Benchmark 18,854
Table Summary
Investor Class
Regulatory Benchmark
Strategy Benchmark
2016
10,000
10,000
10,000
2016
10,331
10,232
10,296
2016
10,203
9,908
10,211
2017
10,625
10,008
10,622
2017
10,908
10,158
10,883
2017
11,126
10,283
11,084
2017
11,371
10,227
11,422
2018
11,438
10,059
11,458
2018
11,438
10,120
11,524
2018
11,624
10,175
11,784
2018
11,301
10,089
11,433
2019
11,660
10,378
11,716
2019
11,803
10,768
11,794
2019
12,244
11,210
12,243
2019
12,542
11,178
12,621
2020
12,493
11,590
12,457
2020
12,450
11,781
12,575
2020
13,405
11,936
13,391
2020
13,871
11,992
13,821
2021
14,363
11,750
14,156
2021
14,926
11,734
14,704
2021
15,286
11,925
15,091
2021
15,128
11,854
14,967
2022
14,711
11,440
14,582
2022
14,017
10,769
13,899
2022
13,573
10,552
13,500
2022
13,633
10,332
13,621
2023
13,640
10,328
13,691
2023
13,835
10,538
13,936
2023
14,174
10,426
14,244
2023
14,305
10,454
14,357
2024
15,035
10,671
15,065
2024
15,333
10,676
15,329
2024
15,969
11,187
16,064
2024
16,253
11,173
16,279
2025
16,361
11,291
16,392
2025
16,461
11,258
16,566
2025
17,144
11,538
17,329
2025
17,600
11,809
17,881
2026
18,180
11,998
18,464
2026
18,496
11,836
18,854
Average Annual Return [Table Text Block]
Table Summary
 
1 Year
5 Years
10 Years
Target 2015 Fund (Investor Class)
12.37%
4.38%
6.34%
Bloomberg U.S. Aggregate Bond Index (Regulatory Benchmark)
5.13
0.17
1.70
S&P Target Date 2015 Index (Strategy Benchmark)
13.81
5.10
6.55
No Deduction of Taxes [Text Block] Neither the fund’s returns nor the index returns reflect the deduction of taxes that a shareholder would pay on fund distributions or redemptions of fund shares.
Updated Performance Information Location [Text Block] Updated performance information can be found at www.troweprice.com.
Distribution of Capital [Text Block] The fund's total return figures reflect the reinvestment of dividends and capital gains, if any.
AssetsNet $ 156,651,000
Holdings Count | Holding 26
Advisory Fees Paid, Amount $ 552,000
InvestmentCompanyPortfolioTurnover 23.30%
Additional Fund Statistics Significance or Limits [Text Block]

What are some fund statistics?

Fund Statistics

  • Total Net Assets (000s)$156,651
  • Number of Portfolio Holdings26
Holdings [Text Block]
Table Summary
Domestic Bond Funds
45.1%
Domestic Equity Funds
27.0
International Bond Funds
17.0
International Equity Funds
9.6
Short-Term and Other
1.3
Largest Holdings [Text Block]
Table Summary
T. Rowe Price Limited Duration Inflation Focused Bond Fund
20.4%
T. Rowe Price New Income Fund
18.2
T. Rowe Price International Bond Fund (USD Hedged)
6.9
T. Rowe Price Growth Stock Fund
5.7
T. Rowe Price Value Fund
5.5
T. Rowe Price Dynamic Global Bond Fund
4.2
T. Rowe Price Emerging Markets Bond Fund
4.1
T. Rowe Price Hedged Equity Fund
3.6
T. Rowe Price High Yield Fund
3.1
T. Rowe Price U.S. Large-Cap Core Fund
3.1
Material Fund Change [Text Block]
Updated Prospectus Web Address www.troweprice.com/paperless
C000129663  
Shareholder Report [Line Items]  
Fund Name Target 2015 Fund
Class Name Advisor Class
Trading Symbol PAHRX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Target 2015 Fund (the "fund") for the period of June 1, 2025 to May 31, 2026.
Additional Information [Text Block] You can find the fund’s prospectus, financial information on Form N‑CSR (which includes required tax information for dividends), holdings, proxy voting information, and other information atwww.troweprice.com/prospectus. You can also request this information without charge by contacting T. Rowe Price at 1‑800‑638‑5660 or info@troweprice.com or contacting your intermediary.
Material Fund Change Notice [Text Block]  
Additional Information Phone Number 1‑800‑638‑5660
Additional Information Email <span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 13.3333px; font-weight: 400; grid-area: auto; line-height: 17.3333px; margin: 0px; overflow: visible; text-align: justify; text-align-last: left; white-space-collapse: preserve-breaks;">info@troweprice.com</span>
Additional Information Website www.troweprice.com/prospectus
Expenses [Text Block]

What were the fund costs for the last year? (based on a hypothetical $10,000 investment)

Table Summary
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Target 2015 Fund - Advisor Class
$74
0.70%
Expenses Paid, Amount $ 74
Expense Ratio, Percent 0.70%
Factors Affecting Performance [Text Block]

What drove fund performance during the past 12 months?

  • Global stock indexes and fixed income markets generated strong returns for the 12 months ended May 31, 2026. Equities were supported by solid corporate earnings, enthusiasm for artificial intelligence and semiconductor-related investments, and periods of easing monetary policy as major central banks, including the Federal Reserve, reduced interest rates in late 2025. Despite volatility from shifting U.S. tariff policies and the U.S.-Iran conflict, markets recovered as ceasefire progress reduced energy-price pressures and improved investor sentiment, while fixed income benefited from declining yields, resilient credit markets, and easing geopolitical risks.

  • Compared with the style-specific S&P Target Date 2015 Index, glide path effect contributed to results for the period. Despite bouts of volatility, global equity markets advanced significantly over the year, and the fund’s greater total equity exposure versus the benchmark was beneficial. Additionally, an overweight allocation to emerging markets equities, which strongly outpaced international developed markets, had a positive impact on relative results.

  • Conversely, security selection within some of the underlying portfolios detracted from relative results, including allocations to U.S. large-cap value, core, and growth stocks.

  • The fund seeks the highest total return over time consistent with an emphasis on both capital growth and income. The fund invests in a diversified portfolio of other T. Rowe Price stock and bond mutual funds that represent various asset classes and sectors. Its allocation among T. Rowe Price funds will change over time in relation to its target retirement date.

Performance Past Does Not Indicate Future [Text] The fund’s past performance is not a good predictor of the fund’s future performance.
Line Graph [Table Text Block]
A line chart as described in the following paragraph. 

Advisor Class 18,012 
Regulatory Benchmark 11,836 
Strategy Benchmark 18,854
Table Summary
Advisor Class
Regulatory Benchmark
Strategy Benchmark
2016
10,000
10,000
10,000
2016
10,323
10,232
10,296
2016
10,194
9,908
10,211
2017
10,598
10,008
10,622
2017
10,872
10,158
10,883
2017
11,089
10,283
11,084
2017
11,325
10,227
11,422
2018
11,373
10,059
11,458
2018
11,363
10,120
11,524
2018
11,548
10,175
11,784
2018
11,217
10,089
11,433
2019
11,556
10,378
11,716
2019
11,699
10,768
11,794
2019
12,116
11,210
12,243
2019
12,402
11,178
12,621
2020
12,354
11,590
12,457
2020
12,312
11,781
12,575
2020
13,235
11,936
13,391
2020
13,686
11,992
13,821
2021
14,172
11,750
14,156
2021
14,716
11,734
14,704
2021
15,071
11,925
15,091
2021
14,893
11,854
14,967
2022
14,482
11,440
14,582
2022
13,787
10,769
13,899
2022
13,339
10,552
13,500
2022
13,387
10,332
13,621
2023
13,384
10,328
13,691
2023
13,576
10,538
13,936
2023
13,896
10,426
14,244
2023
14,011
10,454
14,357
2024
14,714
10,671
15,065
2024
15,005
10,676
15,329
2024
15,614
11,187
16,064
2024
15,892
11,173
16,279
2025
15,977
11,291
16,392
2025
16,061
11,258
16,566
2025
16,714
11,538
17,329
2025
17,159
11,809
17,881
2026
17,703
11,998
18,464
2026
18,012
11,836
18,854
Average Annual Return [Table Text Block]
Table Summary
 
1 Year
5 Years
10 Years
Target 2015 Fund (Advisor Class)
12.15%
4.12%
6.06%
Bloomberg U.S. Aggregate Bond Index (Regulatory Benchmark)
5.13
0.17
1.70
S&P Target Date 2015 Index (Strategy Benchmark)
13.81
5.10
6.55
No Deduction of Taxes [Text Block] Neither the fund’s returns nor the index returns reflect the deduction of taxes that a shareholder would pay on fund distributions or redemptions of fund shares.
Updated Performance Information Location [Text Block] Updated performance information can be found at www.troweprice.com.
Distribution of Capital [Text Block] The fund's total return figures reflect the reinvestment of dividends and capital gains, if any.
AssetsNet $ 156,651,000
Holdings Count | Holding 26
Advisory Fees Paid, Amount $ 552,000
InvestmentCompanyPortfolioTurnover 23.30%
Additional Fund Statistics Significance or Limits [Text Block]

What are some fund statistics?

Fund Statistics

  • Total Net Assets (000s)$156,651
  • Number of Portfolio Holdings26
Holdings [Text Block]
Table Summary
Domestic Bond Funds
45.1%
Domestic Equity Funds
27.0
International Bond Funds
17.0
International Equity Funds
9.6
Short-Term and Other
1.3
Largest Holdings [Text Block]
Table Summary
T. Rowe Price Limited Duration Inflation Focused Bond Fund
20.4%
T. Rowe Price New Income Fund
18.2
T. Rowe Price International Bond Fund (USD Hedged)
6.9
T. Rowe Price Growth Stock Fund
5.7
T. Rowe Price Value Fund
5.5
T. Rowe Price Dynamic Global Bond Fund
4.2
T. Rowe Price Emerging Markets Bond Fund
4.1
T. Rowe Price Hedged Equity Fund
3.6
T. Rowe Price High Yield Fund
3.1
T. Rowe Price U.S. Large-Cap Core Fund
3.1
Material Fund Change [Text Block]
Updated Prospectus Web Address www.troweprice.com/paperless
C000169042  
Shareholder Report [Line Items]  
Fund Name Target 2015 Fund
Class Name I Class
Trading Symbol TTRTX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Target 2015 Fund (the "fund") for the period of June 1, 2025 to May 31, 2026.
Additional Information [Text Block] You can find the fund’s prospectus, financial information on Form N‑CSR (which includes required tax information for dividends), holdings, proxy voting information, and other information atwww.troweprice.com/prospectus. You can also request this information without charge by contacting T. Rowe Price at 1‑800‑638‑5660 or info@troweprice.com or contacting your intermediary.
Material Fund Change Notice [Text Block]  
Additional Information Phone Number 1‑800‑638‑5660
Additional Information Email <span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 13.3333px; font-weight: 400; grid-area: auto; line-height: 17.3333px; margin: 0px; overflow: visible; text-align: justify; text-align-last: left; white-space-collapse: preserve-breaks;">info@troweprice.com</span>
Additional Information Website www.troweprice.com/prospectus
Expenses [Text Block]

What were the fund costs for the last year? (based on a hypothetical $10,000 investment)

Table Summary
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Target 2015 Fund - I Class
$32
0.30%
Expenses Paid, Amount $ 32
Expense Ratio, Percent 0.30%
Factors Affecting Performance [Text Block]

What drove fund performance during the past 12 months?

  • Global stock indexes and fixed income markets generated strong returns for the 12 months ended May 31, 2026. Equities were supported by solid corporate earnings, enthusiasm for artificial intelligence and semiconductor-related investments, and periods of easing monetary policy as major central banks, including the Federal Reserve, reduced interest rates in late 2025. Despite volatility from shifting U.S. tariff policies and the U.S.-Iran conflict, markets recovered as ceasefire progress reduced energy-price pressures and improved investor sentiment, while fixed income benefited from declining yields, resilient credit markets, and easing geopolitical risks.

  • Compared with the style-specific S&P Target Date 2015 Index, glide path effect contributed to results for the period. Despite bouts of volatility, global equity markets advanced significantly over the year, and the fund’s greater total equity exposure versus the benchmark was beneficial. Additionally, an overweight allocation to emerging markets equities, which strongly outpaced international developed markets, had a positive impact on relative results.

  • Conversely, security selection within some of the underlying portfolios detracted from relative results, including allocations to U.S. large-cap value, core, and growth stocks.

  • The fund seeks the highest total return over time consistent with an emphasis on both capital growth and income. The fund invests in a diversified portfolio of other T. Rowe Price stock and bond mutual funds that represent various asset classes and sectors. Its allocation among T. Rowe Price funds will change over time in relation to its target retirement date.

Performance Past Does Not Indicate Future [Text] The fund’s past performance is not a good predictor of the fund’s future performance.
Line Graph [Table Text Block]
A line chart as described in the following paragraph. 

I Class 935,802 
Regulatory Benchmark 591,821 
Strategy Benchmark 942,719
Table Summary
I Class
Regulatory Benchmark
Strategy Benchmark
2016
500,000
500,000
500,000
2016
516,575
511,616
514,808
2016
510,589
495,403
510,537
2017
531,264
500,416
531,117
2017
545,443
507,893
544,153
2017
556,787
514,136
554,191
2017
569,076
511,326
571,118
2018
572,419
502,944
572,881
2018
572,419
505,990
576,193
2018
582,212
508,741
589,219
2018
566,053
504,464
571,641
2019
583,787
518,886
585,776
2019
591,495
538,376
589,675
2019
613,593
560,492
612,140
2019
628,496
558,902
631,073
2020
626,054
579,506
622,866
2020
624,460
589,067
628,765
2020
672,822
596,775
669,529
2020
696,206
599,611
691,026
2021
720,861
587,524
707,799
2021
749,606
586,682
735,201
2021
768,205
596,272
754,550
2021
760,314
592,695
748,362
2022
740,023
571,989
729,121
2022
705,128
538,444
694,949
2022
682,867
527,606
675,014
2022
685,875
516,596
681,039
2023
687,081
516,381
684,564
2023
696,934
526,907
696,811
2023
714,012
521,310
712,213
2023
721,238
522,690
717,838
2024
757,884
533,562
753,247
2024
773,588
533,786
766,451
2024
805,679
559,349
803,205
2024
820,700
558,625
813,938
2025
826,259
564,552
819,616
2025
831,297
562,924
828,293
2025
866,564
576,891
866,450
2025
890,315
590,474
894,049
2026
919,773
599,896
923,177
2026
935,802
591,821
942,719
Average Annual Return [Table Text Block]
Table Summary
 
1 Year
5 Years
10 Years
Target 2015 Fund (I Class)
12.57%
4.54%
6.47%
Bloomberg U.S. Aggregate Bond Index (Regulatory Benchmark)
5.13
0.17
1.70
S&P Target Date 2015 Index (Strategy Benchmark)
13.81
5.10
6.55
No Deduction of Taxes [Text Block] Neither the fund’s returns nor the index returns reflect the deduction of taxes that a shareholder would pay on fund distributions or redemptions of fund shares.
Updated Performance Information Location [Text Block] Updated performance information can be found at www.troweprice.com.
Distribution of Capital [Text Block] The fund's total return figures reflect the reinvestment of dividends and capital gains, if any.
AssetsNet $ 156,651,000
Holdings Count | Holding 26
Advisory Fees Paid, Amount $ 552,000
InvestmentCompanyPortfolioTurnover 23.30%
Additional Fund Statistics Significance or Limits [Text Block]

What are some fund statistics?

Fund Statistics

  • Total Net Assets (000s)$156,651
  • Number of Portfolio Holdings26
Holdings [Text Block]
Table Summary
Domestic Bond Funds
45.1%
Domestic Equity Funds
27.0
International Bond Funds
17.0
International Equity Funds
9.6
Short-Term and Other
1.3
Largest Holdings [Text Block]
Table Summary
T. Rowe Price Limited Duration Inflation Focused Bond Fund
20.4%
T. Rowe Price New Income Fund
18.2
T. Rowe Price International Bond Fund (USD Hedged)
6.9
T. Rowe Price Growth Stock Fund
5.7
T. Rowe Price Value Fund
5.5
T. Rowe Price Dynamic Global Bond Fund
4.2
T. Rowe Price Emerging Markets Bond Fund
4.1
T. Rowe Price Hedged Equity Fund
3.6
T. Rowe Price High Yield Fund
3.1
T. Rowe Price U.S. Large-Cap Core Fund
3.1
Material Fund Change [Text Block]
Updated Prospectus Web Address www.troweprice.com/paperless