| Form N-CSR Cover | 12 Months Ended |
| May 31, 2024 | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSR |
| Amendment Flag | false |
| Registrant Name | T. Rowe Price Exchange-Traded Funds, Inc. |
| Entity Central Index Key | 0001795351 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | May 31, 2024 |
| Shareholder Report | 12 Months Ended | 32 Months Ended |
| May 31, 2024 USD ($) Holding | May 31, 2024 USD ($) Holding | |
| Shareholder Report [Line Items] | ||
| Document Type | N-CSR | |
| Amendment Flag | false | |
| Registrant Name | T. Rowe Price Exchange-Traded Funds, Inc. | |
| Entity Central Index Key | 0001795351 | |
| Entity Investment Company Type | N-1A | |
| Document Period End Date | May 31, 2024 | |
| C000229340 | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Ultra Short-Term Bond ETF | |
| Trading Symbol | TBUX | |
| Security Exchange Name | NYSE | |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Ultra Short-Term Bond ETF ("the fund") for the period of June 1, 2023 to May 31, 2024. | |
| Shareholder Report Annual or Semi-Annual | Annual Shareholder Report | |
| Additional Information [Text Block] | You can find the funds prospectus, financial information on Form N-CSR (which includes required tax information for dividends), holdings, proxy voting information, and other information at www.troweprice.com/prospectus info troweprice.com | |
| Additional Information Phone Number | 1-800-638-5660 | |
| Additional Information Email | info@troweprice.com</span>" id="sjs-B19"><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; height: auto; max-height: none; min-height: 0px;">info@troweprice.com</span> | |
| Additional Information Website | <span style="font-weight: 700; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 13.3333px; grid-area: auto; line-height: 17.3333px; margin: 0px; overflow: visible; text-align: justify; height: auto; max-height: none; min-height: 0px;">www.troweprice.com/prospectus</span></span>" id="sjs-B20"><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; height: auto; max-height: none; min-height: 0px;"><span style="font-weight: 700; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 13.3333px; grid-area: auto; line-height: 17.3333px; margin: 0px; overflow: visible; text-align: justify; height: auto; max-height: none; min-height: 0px;">www.troweprice.com/prospectus</span></span> | |
| Expenses [Text Block] | What were the fund costs for the last year? Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Ultra Short-Term Bond ETF $18 0.17% | |
| Expenses Paid, Amount | $ 18 | |
| Expense Ratio, Percent | 0.17% | |
| Factors Affecting Performance [Text Block] | What drove fund performance during the past 12 months? The shorter-maturity U.S. investment-grade bond market generated positive returns over the 12-month period ended May 31, 2024, largely lifted by declining interest rates and tighter credit spreads near the end of 2023. Corporate bonds and securitized credit generated positive excess returns during the rally and the broader reporting period. The funds out-of-benchmark allocations to securitized sectors (residential mortgage-backed securities, asset-backed securities (ABS), and commercial mortgage-backed securities), overweight to investment-grade corporate bonds, and underweight to U.S. Treasuries aided relative performance versus its style-specific benchmark, the Bloomberg Short-Term Government/Corporate Index. Security selection among investment-grade corporate bonds also contributed. Positioning on the yield curve hindered relative performance. Specifically, an overweight to the two-year key rate detracted as the yield on the two-year U.S. Treasury note ended the period higher. The funds allocation to investment-grade corporate debt decreased over the reporting period but continued to represent the portfolios largest absolute and relative position. As corporate bond valuations tightened early in the period, we focused on additions in ABS, and our allocation to the ABS sector ended notably higher. Within the sector, the analyst team identified a variety of opportunities among automotive and industrial equipment securities. While we are primarily a cash bond manager, we occasionally employ the limited use of derivatives in our strategy for hedging purposes. Derivatives may include futures and options, as well as credit default and interest rate swaps. During the reporting period, our use of derivatives, particularly U.S. Treasury futures, contributed modestly to absolute performance. | |
| Line Graph [Table Text Block] | Ultra Short-Term Bond ETF (Based on Net Asset Value) (Regulatory Benchmark) (Strategy Benchmark) 9/28/21 $10,000 $10,000 $10,000 11/30/21 $9,970 $10,037 $9,998 2/28/22 $9,934 $9,686 $9,982 5/31/22 $9,869 $9,118 $9,982 8/31/22 $9,867 $8,935 $9,982 11/30/22 $9,901 $8,748 $10,024 2/28/23 $10,064 $8,745 $10,127 5/31/23 $10,181 $8,923 $10,244 8/31/23 $10,341 $8,828 $10,378 11/30/23 $10,510 $8,851 $10,527 2/29/24 $10,709 $9,036 $10,665 5/31/24 $10,867 $9,039 $10,803 | |
| Average Annual Return [Table Text Block] | 1 Year Since Inception 9/28/21 Ultra Short-Term Bond ETF (Based on Net Asset Value) 6.74 % 3.16 % Ultra Short-Term Bond ETF (At Market Price) 6.95 % 3.21 % Bloomberg U.S. Aggregate Bond Index (Regulatory Benchmark) 1.31 % - % Bloomberg Short-Term Government/Corporate Index (Strategy Benchmark) 5.46 % 2.93 % | |
| Performance Inception Date | Sep. 28, 2021 | |
| AssetsNet | $ 164,063,000 | $ 164,063,000 |
| Holdings Count | Holding | 442 | 442 |
| Advisory Fees Paid, Amount | $ 192,000 | |
| InvestmentCompanyPortfolioTurnover | 76.40% | |
| Additional Fund Statistics [Text Block] | What are some fund statistics? Fund Statistics Total Net Assets (000s) $164,063 Number of Portfolio Holdings 442 Investment Advisory Fees Paid (000s) $192 Portfolio Turnover Rate 76.4% | |
| Holdings [Text Block] | Credit Quality Allocation* U.S. Treasury Securities 0.4 % AAA Rated 29.6 AA Rated 5.2 A Rated 23.2 BBB Rated 39.5 Not Rated 1.1 Reserves 1.0 *Credit ratings for the securities held in the Fund are provided by Moody's, Standard & Poor's, and Fitch and are converted to the Standard & Poor's nomenclature. A rating of AAA represents the highest-rated securities, and a rating of D represents the lowest rated securities. If the ratings agencies differ, the highest rating is applied to the security. If a rating is not available, the security is classified as Not Rated. The rating of the underlying investment vehicle is used to determine the creditworthiness of credit default swaps and sovereign securities. The Fund is not rated by any agency. | |
| Largest Holdings [Text Block] | Top Ten Holdings U.S. Treasury Bills 2.6 % Santander Drive Auto Receivables Trust 2.0 Verus Securitization Trust 1.7 HPEFS Equipment Trust 1.5 Enterprise Fleet Financing 1.3 CarMax Auto Owner Trust 1.3 Conagra Brands 1.2 Targa Resources 1.2 Edison International 1.2 Octane Receivables Trust 1.0 | |
| Material Fund Change Name [Text Block] |
| Shareholder Report, Line Graph (Details) - USD ($) | 12 Months Ended | |||||||||||
| May 31, 2024 | Feb. 29, 2024 | Nov. 30, 2023 | Aug. 31, 2023 | May 31, 2023 | Feb. 28, 2023 | Nov. 30, 2022 | Aug. 31, 2022 | May 31, 2022 | Feb. 28, 2022 | Nov. 30, 2021 | Sep. 27, 2021 | |
| C000229340 | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | (Regulatory Benchmark) | |||||||||||
| T. Rowe Index: Bloomberg U.S. Aggregate Bond Index | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Account Value | $ 9,039 | $ 9,036 | $ 8,851 | $ 8,828 | $ 8,923 | $ 8,745 | $ 8,748 | $ 8,935 | $ 9,118 | $ 9,686 | $ 10,037 | $ 10,000 |
| T. Rowe Index: Bloomberg Short-Term Government/Corporate Index | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | (Strategy Benchmark) | |||||||||||
| Account Value | $ 10,803 | $ 10,665 | $ 10,527 | $ 10,378 | $ 10,244 | $ 10,127 | $ 10,024 | $ 9,982 | $ 9,982 | $ 9,982 | $ 9,998 | $ 10,000 |
| Shareholder Report, Average Annual Return (Details) | 12 Months Ended | 32 Months Ended |
| May 31, 2024 | May 31, 2024 | |
| C000229340 | ||
| Average Annual Return [Line Items] | ||
| Line Graph and Table Measure Name | (Regulatory Benchmark) | |
| Average Annual Return, Percent | 6.95% | 3.21% |
| Without Sales Load [Member] | C000229340 | ||
| Average Annual Return [Line Items] | ||
| Average Annual Return, Percent | 6.74% | 3.16% |
| T. Rowe Index: Bloomberg U.S. Aggregate Bond Index | ||
| Average Annual Return [Line Items] | ||
| Average Annual Return, Percent | 1.31% | (3.71%) |
| T. Rowe Index: Bloomberg Short-Term Government/Corporate Index | ||
| Average Annual Return [Line Items] | ||
| Line Graph and Table Measure Name | (Strategy Benchmark) | |
| Average Annual Return, Percent | 5.46% | 2.93% |
| Shareholder Report, Holdings (Details) - C000229340 | May 31, 2024 |
| FR_912797KW6_5.228000_2024-08-06 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| FR_80286YAD4 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| FR_92540CAA5 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
| FR_40441RAD5 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| FR_29375PAB6 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.30% |
| FR_14316NAG4 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.30% |
| FR_20600GFD3_0.000000_2024-06-13 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.20% |
| FR_87613EG82_0.000000_2024-07-08 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.20% |
| FR_28103AF33_0.000000_2024-06-03 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.20% |
| FR_67571CAB7 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| U.S. Treasury Securities | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.40% |
| AAA Rated | |
| Holdings [Line Items] | |
| Percent of Total Investments | 29.60% |
| AA Rated | |
| Holdings [Line Items] | |
| Percent of Total Investments | 5.20% |
| A Rated | |
| Holdings [Line Items] | |
| Percent of Total Investments | 23.20% |
| BBB Rated | |
| Holdings [Line Items] | |
| Percent of Total Investments | 39.50% |
| Not Rated | |
| Holdings [Line Items] | |
| Percent of Total Investments | 1.10% |
| Reserves | |
| Holdings [Line Items] | |
| Percent of Total Investments | 1% |
