| Form N-CSR Cover | 12 Months Ended |
| Dec. 31, 2024 | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSR |
| Amendment Flag | false |
| Registrant Name | T. ROWE PRICE INTERNATIONAL FUNDS, INC. |
| Entity Central Index Key | 0000313212 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Dec. 31, 2024 |
| Shareholder Report | 12 Months Ended | 58 Months Ended | 112 Months Ended |
| Dec. 31, 2024 USD ($) Holding | Dec. 31, 2024 USD ($) Holding | Dec. 31, 2024 USD ($) Holding | |
| Shareholder Report [Line Items] | |||
| Document Type | N-CSR | ||
| Amendment Flag | false | ||
| Registrant Name | T. ROWE PRICE INTERNATIONAL FUNDS, INC. | ||
| Entity Central Index Key | 0000313212 | ||
| Entity Investment Company Type | N-1A | ||
| Document Period End Date | Dec. 31, 2024 | ||
| C000004007 | |||
| Shareholder Report [Line Items] | |||
| Fund Name | International Bond Fund | ||
| Class Name | Investor Class | ||
| Trading Symbol | RPIBX | ||
| Shareholder Report Annual or Semi-Annual | Annual Shareholder Report | ||
| 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 at www.troweprice.com/prospectus info troweprice.com | ||
| Material Fund Change Notice [Text Block] | |||
| 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;">info@troweprice.com</span> | ||
| Additional Information Website | www.troweprice.com/prospectus | ||
| 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 International Bond Fund - Investor Class $65 0.67% | ||
| Expenses Paid, Amount | $ 65 | ||
| Expense Ratio, Percent | 0.67% | ||
| Factors Affecting Performance [Text Block] | What drove fund performance during the past 12 months? Global fixed income markets fell over the 12-month reporting period due to weaker currencies versus the dollar and rising bond yields at the end of the period, despite many central banks easing monetary policy. The fund benefited from its exposure to euro-denominated government-related bonds and corporate credit relative to the Bloomberg Global Aggregate ex USD Bond Index. Additionally, the fund’s underweight currency exposure in the Chinese yuan and short Taiwanese dollar, relative to the benchmark, added value amid U.S. dollar strength during the reporting period. Against the style-specific index, an underweighting duration in China dragged on performance as local yields fell over the reporting period, with China’s central bank maintaining mostly stimulative monetary policy. Long exposure in the Brazilian real detracted as the country suffered amid investor concerns over the government's spending plans and wide budget deficit. The fund seeks to provide current income and capital appreciation primarily through a focus on foreign bonds, including exposure to various countries, bond sectors, and currencies. During the period, the fund shifted to a long position in the U.S. dollar due to the anticipation of near-term dollar strength. The fund held material exposure to derivatives, including currency, interest rate, and credit derivatives. The fund’s derivatives exposure to currency forwards had a negative impact on absolute performance, although exposure to interest rate derivatives moderated the impact. | ||
| Performance Past Does Not Indicate Future [Text] | The fund’s past performance is not a good predictor of the fund’s future performance. | ||
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Years 10 Years International Bond Fund (Investor Class) - % - % - % Bloomberg Global Aggregate Bond Index (Regulatory Benchmark) - - 0.15 Bloomberg Global Aggregate ex USD Bond Index (Strategy Benchmark) - - - The preceding line graph shows the value of a hypothetical $10,000 investment in the fund over the past 10 fiscal year periods or since inception (for funds lacking 10-year records). The fund’s performance information included in the line graph and table above is compared with a regulatory required index that represents an overall securities market (Regulatory Benchmark). In addition, the line graph and table may also include one or more indexes that more closely aligns to the fund's investment strategy (Strategy Benchmark(s)). Due to new SEC Rules on shareholder reporting the fund adopted a new broad-based securities market index, referred to as the Regulatory Benchmark. Market index returns do not include expenses, which are deducted from fund returns. The fund's total return figures reflect the reinvestment of dividends and capital gains, if any.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. The fund’s past performance is not a good predictor of the fund’s future performance. | ||
| 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. | ||
| Performance Table Market Index Changed [Text Block] | Due to new SEC Rules on shareholder reporting the fund adopted a new broad-based securities market index, referred to as the Regulatory Benchmark. | ||
| 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 | $ 828,344,000 | $ 828,344,000 | $ 828,344,000 |
| Holdings Count | Holding | 597 | 597 | 597 |
| Advisory Fees Paid, Amount | $ 2,734,000 | ||
| InvestmentCompanyPortfolioTurnover | 54.30% | ||
| Additional Fund Statistics [Text Block] | What are some fund statistics? Fund Statistics Total Net Assets (000s) $828,344 Number of Portfolio Holdings 597 | ||
| Holdings [Text Block] | Geographic United States 14.7 % Japan 10.5 Canada 7.9 China 7.6 France 5.3 United Kingdom 4.9 Germany 3.9 Australia 3.8 Indonesia 3.5 Other 37.9 | ||
| Largest Holdings [Text Block] | Top Ten Holdings Government of Japan 10.5 % People's Republic of China 6.8 U.S. Treasury Bills 5.9 Republic of France 3.6 Government of Malaysia 3.5 Republic of Indonesia 3.3 Canadian Treasury Bill 3.2 United Kingdom Gilt 2.2 Government of Canada Real Return Bond, Inflation-Indexed 2.0 Commonwealth of Australia 2.0 | ||
| Updated Prospectus Web Address | www.troweprice.com/paperless | ||
| C000004008 | |||
| Shareholder Report [Line Items] | |||
| Fund Name | International Bond Fund | ||
| Class Name | Advisor Class | ||
| Trading Symbol | PAIBX | ||
| Shareholder Report Annual or Semi-Annual | Annual Shareholder Report | ||
| 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 at www.troweprice.com/prospectus info troweprice.com | ||
| Material Fund Change Notice [Text Block] | |||
| Additional Information Phone Number | 1‑800‑638‑5660 | ||
| Additional Information Email | info@troweprice.com</span>" id="sjs-B48"><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;">info@troweprice.com</span> | ||
| Additional Information Website | www.troweprice.com/prospectus | ||
| 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 International Bond Fund - Advisor Class $106 1.09% | ||
| Expenses Paid, Amount | $ 106 | ||
| Expense Ratio, Percent | 1.09% | ||
| Factors Affecting Performance [Text Block] | What drove fund performance during the past 12 months? Global fixed income markets fell over the 12-month reporting period due to weaker currencies versus the dollar and rising bond yields at the end of the period, despite many central banks easing monetary policy. The fund benefited from its exposure to euro-denominated government-related bonds and corporate credit relative to the Bloomberg Global Aggregate ex USD Bond Index. Additionally, the fund’s underweight currency exposure in the Chinese yuan and short Taiwanese dollar, relative to the benchmark, added value amid U.S. dollar strength during the reporting period. Against the style-specific index, an underweighting duration in China dragged on performance as local yields fell over the reporting period, with China’s central bank maintaining mostly stimulative monetary policy. Long exposure in the Brazilian real detracted as the country suffered amid investor concerns over the government's spending plans and wide budget deficit. The fund seeks to provide current income and capital appreciation primarily through a focus on foreign bonds, including exposure to various countries, bond sectors, and currencies. During the period, the fund shifted to a long position in the U.S. dollar due to the anticipation of near-term dollar strength. The fund held material exposure to derivatives, including currency, interest rate, and credit derivatives. The fund’s derivatives exposure to currency forwards had a negative impact on absolute performance, although exposure to interest rate derivatives moderated the impact. | ||
| Performance Past Does Not Indicate Future [Text] | The fund’s past performance is not a good predictor of the fund’s future performance. | ||
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Years 10 Years International Bond Fund (Advisor Class) - % - % - % Bloomberg Global Aggregate Bond Index (Regulatory Benchmark) - - 0.15 Bloomberg Global Aggregate ex USD Bond Index (Strategy Benchmark) - - - The preceding line graph shows the value of a hypothetical $10,000 investment in the fund over the past 10 fiscal year periods or since inception (for funds lacking 10-year records). The fund’s performance information included in the line graph and table above is compared with a regulatory required index that represents an overall securities market (Regulatory Benchmark). In addition, the line graph and table may also include one or more indexes that more closely aligns to the fund's investment strategy (Strategy Benchmark(s)). Due to new SEC Rules on shareholder reporting the fund adopted a new broad-based securities market index, referred to as the Regulatory Benchmark. Market index returns do not include expenses, which are deducted from fund returns. The fund's total return figures reflect the reinvestment of dividends and capital gains, if any.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. The fund’s past performance is not a good predictor of the fund’s future performance. | ||
| 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. | ||
| Performance Table Market Index Changed [Text Block] | Due to new SEC Rules on shareholder reporting the fund adopted a new broad-based securities market index, referred to as the Regulatory Benchmark. | ||
| 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 | $ 828,344,000 | $ 828,344,000 | $ 828,344,000 |
| Holdings Count | Holding | 597 | 597 | 597 |
| Advisory Fees Paid, Amount | $ 2,734,000 | ||
| InvestmentCompanyPortfolioTurnover | 54.30% | ||
| Additional Fund Statistics [Text Block] | What are some fund statistics? Fund Statistics Total Net Assets (000s) $828,344 Number of Portfolio Holdings 597 | ||
| Holdings [Text Block] | Geographic United States 14.7 % Japan 10.5 Canada 7.9 China 7.6 France 5.3 United Kingdom 4.9 Germany 3.9 Australia 3.8 Indonesia 3.5 Other 37.9 | ||
| Largest Holdings [Text Block] | Top Ten Holdings Government of Japan 10.5 % People's Republic of China 6.8 U.S. Treasury Bills 5.9 Republic of France 3.6 Government of Malaysia 3.5 Republic of Indonesia 3.3 Canadian Treasury Bill 3.2 United Kingdom Gilt 2.2 Government of Canada Real Return Bond, Inflation-Indexed 2.0 Commonwealth of Australia 2.0 | ||
| Updated Prospectus Web Address | www.troweprice.com/paperless | ||
| C000159126 | |||
| Shareholder Report [Line Items] | |||
| Fund Name | International Bond Fund | ||
| Class Name | I Class | ||
| Trading Symbol | RPISX | ||
| Shareholder Report Annual or Semi-Annual | Annual Shareholder Report | ||
| 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 at www.troweprice.com/prospectus info troweprice.com | ||
| Material Fund Change Notice [Text Block] | |||
| Additional Information Phone Number | 1‑800‑638‑5660 | ||
| Additional Information Email | info@troweprice.com</span>" id="sjs-B77"><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;">info@troweprice.com</span> | ||
| Additional Information Website | www.troweprice.com/prospectus | ||
| 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 International Bond Fund - I Class $53 0.54% | ||
| Expenses Paid, Amount | $ 53 | ||
| Expense Ratio, Percent | 0.54% | ||
| Factors Affecting Performance [Text Block] | What drove fund performance during the past 12 months? Global fixed income markets fell over the 12-month reporting period due to weaker currencies versus the dollar and rising bond yields at the end of the period, despite many central banks easing monetary policy. The fund benefited from its exposure to euro-denominated government-related bonds and corporate credit relative to the Bloomberg Global Aggregate ex USD Bond Index. Additionally, the fund’s underweight currency exposure in the Chinese yuan and short Taiwanese dollar, relative to the benchmark, added value amid U.S. dollar strength during the reporting period. Against the style-specific index, an underweighting duration in China dragged on performance as local yields fell over the reporting period, with China’s central bank maintaining mostly stimulative monetary policy. Long exposure in the Brazilian real detracted as the country suffered amid investor concerns over the government's spending plans and wide budget deficit. The fund seeks to provide current income and capital appreciation primarily through a focus on foreign bonds, including exposure to various countries, bond sectors, and currencies. During the period, the fund shifted to a long position in the U.S. dollar due to the anticipation of near-term dollar strength. The fund held material exposure to derivatives, including currency, interest rate, and credit derivatives. The fund’s derivatives exposure to currency forwards had a negative impact on absolute performance, although exposure to interest rate derivatives moderated the impact. | ||
| Performance Past Does Not Indicate Future [Text] | The fund’s past performance is not a good predictor of the fund’s future performance. | ||
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Years Since Inception 8/28/15 International Bond Fund (I Class) - % - % - % Bloomberg Global Aggregate Bond Index (Regulatory Benchmark) - - 0.44 Bloomberg Global Aggregate ex USD Bond Index (Strategy Benchmark) - - - The preceding line graph shows the value of a hypothetical $500,000 investment in the fund over the past 10 fiscal year periods or since inception (for funds lacking 10-year records). The fund’s performance information included in the line graph and table above is compared with a regulatory required index that represents an overall securities market (Regulatory Benchmark). In addition, the line graph and table may also include one or more indexes that more closely aligns to the fund's investment strategy (Strategy Benchmark(s)). Due to new SEC Rules on shareholder reporting the fund adopted a new broad-based securities market index, referred to as the Regulatory Benchmark. Market index returns do not include expenses, which are deducted from fund returns. The fund's total return figures reflect the reinvestment of dividends and capital gains, if any.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. The fund’s past performance is not a good predictor of the fund’s future performance. | ||
| Performance Inception Date | Aug. 28, 2015 | ||
| 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. | ||
| Performance Table Market Index Changed [Text Block] | Due to new SEC Rules on shareholder reporting the fund adopted a new broad-based securities market index, referred to as the Regulatory Benchmark. | ||
| 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 | $ 828,344,000 | $ 828,344,000 | $ 828,344,000 |
| Holdings Count | Holding | 597 | 597 | 597 |
| Advisory Fees Paid, Amount | $ 2,734,000 | ||
| InvestmentCompanyPortfolioTurnover | 54.30% | ||
| Additional Fund Statistics [Text Block] | What are some fund statistics? Fund Statistics Total Net Assets (000s) $828,344 Number of Portfolio Holdings 597 | ||
| Holdings [Text Block] | Geographic United States 14.7 % Japan 10.5 Canada 7.9 China 7.6 France 5.3 United Kingdom 4.9 Germany 3.9 Australia 3.8 Indonesia 3.5 Other 37.9 | ||
| Largest Holdings [Text Block] | Top Ten Holdings Government of Japan 10.5 % People's Republic of China 6.8 U.S. Treasury Bills 5.9 Republic of France 3.6 Government of Malaysia 3.5 Republic of Indonesia 3.3 Canadian Treasury Bill 3.2 United Kingdom Gilt 2.2 Government of Canada Real Return Bond, Inflation-Indexed 2.0 Commonwealth of Australia 2.0 | ||
| Updated Prospectus Web Address | www.troweprice.com/paperless | ||
| C000219335 | |||
| Shareholder Report [Line Items] | |||
| Fund Name | International Bond Fund | ||
| Class Name | Z Class | ||
| Trading Symbol | TRLZX | ||
| Shareholder Report Annual or Semi-Annual | Annual Shareholder Report | ||
| 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 at www.troweprice.com/prospectus info troweprice.com | ||
| Material Fund Change Notice [Text Block] | |||
| Additional Information Phone Number | 1‑800‑638‑5660 | ||
| Additional Information Email | info@troweprice.com</span>" id="sjs-B107"><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;">info@troweprice.com</span> | ||
| Additional Information Website | www.troweprice.com/prospectus | ||
| 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 International Bond Fund - Z Class $0 0.00% | ||
| Expenses Paid, Amount | $ 0 | ||
| Expense Ratio, Percent | 0% | ||
| Factors Affecting Performance [Text Block] | What drove fund performance during the past 12 months? Global fixed income markets fell over the 12-month reporting period due to weaker currencies versus the dollar and rising bond yields at the end of the period, despite many central banks easing monetary policy. The fund benefited from its exposure to euro-denominated government-related bonds and corporate credit relative to the Bloomberg Global Aggregate ex USD Bond Index. Additionally, the fund’s underweight currency exposure in the Chinese yuan and short Taiwanese dollar, relative to the benchmark, added value amid U.S. dollar strength during the reporting period. Against the style-specific index, an underweighting duration in China dragged on performance as local yields fell over the reporting period, with China’s central bank maintaining mostly stimulative monetary policy. Long exposure in the Brazilian real detracted as the country suffered amid investor concerns over the government's spending plans and wide budget deficit. The fund seeks to provide current income and capital appreciation primarily through a focus on foreign bonds, including exposure to various countries, bond sectors, and currencies. During the period, the fund shifted to a long position in the U.S. dollar due to the anticipation of near-term dollar strength. The fund held material exposure to derivatives, including currency, interest rate, and credit derivatives. The fund’s derivatives exposure to currency forwards had a negative impact on absolute performance, although exposure to interest rate derivatives moderated the impact. | ||
| Performance Past Does Not Indicate Future [Text] | The fund’s past performance is not a good predictor of the fund’s future performance. | ||
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year Since Inception 3/16/20 International Bond Fund (Z Class) - % - % Bloomberg Global Aggregate Bond Index (Regulatory Benchmark) - - Bloomberg Global Aggregate ex USD Bond Index (Strategy Benchmark) - - The preceding line graph shows the value of a hypothetical $10,000 investment in the fund over the past 10 fiscal year periods or since inception (for funds lacking 10-year records). The fund’s performance information included in the line graph and table above is compared with a regulatory required index that represents an overall securities market (Regulatory Benchmark). In addition, the line graph and table may also include one or more indexes that more closely aligns to the fund's investment strategy (Strategy Benchmark(s)). Due to new SEC Rules on shareholder reporting the fund adopted a new broad-based securities market index, referred to as the Regulatory Benchmark. Market index returns do not include expenses, which are deducted from fund returns. The fund's total return figures reflect the reinvestment of dividends and capital gains, if any.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. The fund’s past performance is not a good predictor of the fund’s future performance. | ||
| Performance Inception Date | Mar. 16, 2020 | ||
| 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. | ||
| Performance Table Market Index Changed [Text Block] | Due to new SEC Rules on shareholder reporting the fund adopted a new broad-based securities market index, referred to as the Regulatory Benchmark. | ||
| 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 | $ 828,344,000 | $ 828,344,000 | $ 828,344,000 |
| Holdings Count | Holding | 597 | 597 | 597 |
| Advisory Fees Paid, Amount | $ 2,734,000 | ||
| InvestmentCompanyPortfolioTurnover | 54.30% | ||
| Additional Fund Statistics [Text Block] | What are some fund statistics? Fund Statistics Total Net Assets (000s) $828,344 Number of Portfolio Holdings 597 | ||
| Holdings [Text Block] | Geographic United States 14.7 % Japan 10.5 Canada 7.9 China 7.6 France 5.3 United Kingdom 4.9 Germany 3.9 Australia 3.8 Indonesia 3.5 Other 37.9 | ||
| Largest Holdings [Text Block] | Top Ten Holdings Government of Japan 10.5 % People's Republic of China 6.8 U.S. Treasury Bills 5.9 Republic of France 3.6 Government of Malaysia 3.5 Republic of Indonesia 3.3 Canadian Treasury Bill 3.2 United Kingdom Gilt 2.2 Government of Canada Real Return Bond, Inflation-Indexed 2.0 Commonwealth of Australia 2.0 | ||
| Updated Prospectus Web Address | www.troweprice.com/paperless |
| Shareholder Report, Line Graph (Details) - USD ($) | Dec. 31, 2024 | Sep. 30, 2024 | Jun. 30, 2024 | Mar. 31, 2024 | Dec. 31, 2023 | Sep. 30, 2023 | Jun. 30, 2023 | Mar. 31, 2023 | Dec. 31, 2022 | Sep. 30, 2022 | Jun. 30, 2022 | Mar. 31, 2022 | Dec. 31, 2021 | Sep. 30, 2021 | Jun. 30, 2021 | Mar. 31, 2021 | Dec. 31, 2020 | Sep. 30, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Mar. 16, 2020 | Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2015 | Sep. 30, 2015 | Aug. 28, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2014 |
| Bloomberg Global Aggregate Bond Index | |||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||||||||||||||||||||||||||
| Account Value | $ 10,151 | $ 10,697 | $ 9,999 | $ 10,111 | $ 10,326 | $ 9,552 | $ 9,907 | $ 10,061 | $ 9,767 | $ 9,343 | $ 10,040 | $ 10,944 | $ 11,662 | $ 11,741 | $ 11,846 | $ 11,693 | $ 12,238 | $ 11,849 | $ 11,542 | $ 11,171 | $ 11,208 | $ 11,154 | $ 11,075 | $ 10,721 | $ 10,490 | $ 10,366 | $ 10,463 | $ 10,762 | $ 10,618 | $ 10,505 | $ 10,323 | $ 10,061 | $ 9,887 | $ 10,638 | $ 10,552 | $ 10,256 | $ 9,685 | $ 9,775 | $ 9,692 | $ 9,808 | $ 10,000 | ||
| Bloomberg Global Aggregate Bond Index | |||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||||||||||||||||||||||||||
| Account Value | 10,151 | 10,697 | 9,999 | 10,111 | 10,326 | 9,552 | 9,907 | 10,061 | 9,767 | 9,343 | 10,040 | 10,944 | 11,662 | 11,741 | 11,846 | 11,693 | 12,238 | 11,849 | 11,542 | 11,171 | 11,208 | 11,154 | 11,075 | 10,721 | 10,490 | 10,366 | 10,463 | 10,762 | 10,618 | 10,505 | 10,323 | 10,061 | 9,887 | 10,638 | 10,552 | 10,256 | 9,685 | 9,775 | 9,692 | 9,808 | 10,000 | ||
| Bloomberg Global Aggregate Bond Index | |||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||||||||||||||||||||||||||
| Account Value | 520,975 | 548,990 | 513,157 | 518,887 | 529,926 | 490,216 | 508,450 | 516,350 | 501,278 | 479,470 | 515,250 | 561,655 | 598,530 | 602,582 | 607,952 | 600,076 | 628,094 | 608,120 | 592,355 | 573,318 | 575,198 | 572,420 | 568,357 | 550,229 | 538,375 | 532,004 | 536,964 | 552,331 | 544,913 | 539,107 | 529,764 | 516,329 | 507,392 | 545,978 | 541,556 | 526,344 | 497,024 | 501,660 | $ 500,000 | ||||
| Bloomberg Global Aggregate Bond Index | |||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||||||||||||||||||||||||||
| Account Value | 8,993 | 9,476 | 8,858 | 8,957 | 9,147 | 8,462 | 8,777 | 8,913 | 8,653 | 8,276 | 8,894 | 9,695 | 10,332 | 10,402 | 10,494 | 10,358 | 10,842 | 10,497 | 10,225 | 9,896 | $ 10,000 | ||||||||||||||||||||||
| Bloomberg Global Aggregate ex USD Bond Index | |||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||||||||||||||||||||||||||
| Account Value | 9,133 | 9,803 | 9,034 | 9,229 | 9,535 | 8,731 | 9,095 | 9,295 | 9,019 | 8,445 | 9,264 | 10,411 | 11,093 | 11,226 | 11,407 | 11,303 | 11,935 | 11,357 | 10,906 | 10,549 | 10,839 | 10,767 | 10,829 | 10,471 | 10,315 | 10,221 | 10,402 | 10,923 | 10,541 | 10,372 | 10,121 | 9,775 | 9,538 | 10,629 | 10,521 | 10,174 | 9,398 | 9,518 | 9,457 | 9,537 | 10,000 | ||
| Bloomberg Global Aggregate ex USD Bond Index | |||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||||||||||||||||||||||||||
| Account Value | 9,133 | 9,803 | 9,034 | 9,229 | 9,535 | 8,731 | 9,095 | 9,295 | 9,019 | 8,445 | 9,264 | 10,411 | 11,093 | 11,226 | 11,407 | 11,303 | 11,935 | 11,357 | 10,906 | 10,549 | 10,839 | 10,767 | 10,829 | 10,471 | 10,315 | 10,221 | 10,402 | 10,923 | 10,541 | 10,372 | 10,121 | 9,775 | 9,538 | 10,629 | 10,521 | 10,174 | 9,398 | 9,518 | $ 9,457 | $ 9,537 | $ 10,000 | ||
| Bloomberg Global Aggregate ex USD Bond Index | |||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||||||||||||||||||||||||||
| Account Value | 480,491 | 515,784 | 475,311 | 485,567 | 501,679 | 459,356 | 478,487 | 489,056 | 474,533 | 444,296 | 487,426 | 547,760 | 583,648 | 590,614 | 600,166 | 594,693 | 627,914 | 597,503 | 573,770 | 554,986 | $ 570,279 | $ 566,461 | $ 569,745 | $ 550,912 | $ 542,670 | $ 537,768 | $ 547,285 | $ 574,667 | $ 554,573 | $ 545,684 | $ 532,502 | $ 514,261 | $ 501,809 | $ 559,192 | $ 553,510 | $ 535,303 | $ 494,458 | $ 500,759 | $ 500,000 | ||||
| Bloomberg Global Aggregate ex USD Bond Index | |||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||||||||||||||||||||||||||
| Account Value | $ 8,518 | $ 9,143 | $ 8,426 | $ 8,608 | $ 8,893 | $ 8,143 | $ 8,482 | $ 8,670 | $ 8,412 | $ 7,876 | $ 8,641 | $ 9,710 | $ 10,346 | $ 10,470 | $ 10,639 | $ 10,542 | $ 11,131 | $ 10,592 | $ 10,171 | $ 9,838 | $ 10,000 |
| Shareholder Report, Average Annual Return (Details) | 12 Months Ended | 58 Months Ended | 60 Months Ended | 112 Months Ended | 120 Months Ended |
| Dec. 31, 2024 | Dec. 31, 2024 | Dec. 31, 2024 | Dec. 31, 2024 | Dec. 31, 2024 | |
| Without Sales Load [Member] | C000004007 | |||||
| Average Annual Return [Line Items] | |||||
| Average Annual Return, Percent | (5.12%) | (3.47%) | (0.73%) | ||
| Without Sales Load [Member] | C000004008 | |||||
| Average Annual Return [Line Items] | |||||
| Average Annual Return, Percent | (5.51%) | (4.06%) | (1.17%) | ||
| Without Sales Load [Member] | C000159126 | |||||
| Average Annual Return [Line Items] | |||||
| Average Annual Return, Percent | (5.11%) | (3.34%) | (0.12%) | ||
| Without Sales Load [Member] | C000219335 | |||||
| Average Annual Return [Line Items] | |||||
| Average Annual Return, Percent | (4.48%) | (2.21%) | |||
| Bloomberg Global Aggregate Bond Index | |||||
| Average Annual Return [Line Items] | |||||
| Average Annual Return, Percent | (1.69%) | (1.96%) | 0.15% | ||
| Bloomberg Global Aggregate Bond Index | |||||
| Average Annual Return [Line Items] | |||||
| Average Annual Return, Percent | (1.69%) | (1.96%) | 0.15% | ||
| Bloomberg Global Aggregate Bond Index | |||||
| Average Annual Return [Line Items] | |||||
| Average Annual Return, Percent | (1.69%) | (1.96%) | 0.44% | ||
| Bloomberg Global Aggregate Bond Index | |||||
| Average Annual Return [Line Items] | |||||
| Average Annual Return, Percent | (1.69%) | (2.19%) | |||
| Bloomberg Global Aggregate ex USD Bond Index | |||||
| Average Annual Return [Line Items] | |||||
| Average Annual Return, Percent | (4.22%) | (3.37%) | (0.90%) | ||
| Bloomberg Global Aggregate ex USD Bond Index | |||||
| Average Annual Return [Line Items] | |||||
| Average Annual Return, Percent | (4.22%) | (3.37%) | (0.90%) | ||
| Bloomberg Global Aggregate ex USD Bond Index | |||||
| Average Annual Return [Line Items] | |||||
| Average Annual Return, Percent | (4.22%) | (3.37%) | (0.43%) | ||
| Bloomberg Global Aggregate ex USD Bond Index | |||||
| Average Annual Return [Line Items] | |||||
| Average Annual Return, Percent | (4.22%) | (3.29%) |
| Shareholder Report, Holdings (Details) | Dec. 31, 2024 |
| C000004007 | Government of Japan | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.50% |
| C000004007 | People's Republic of China | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.80% |
| C000004007 | U.S. Treasury Bills | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.90% |
| C000004007 | Republic of France | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| C000004007 | Government of Malaysia | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000004007 | Republic of Indonesia | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.30% |
| C000004007 | Canadian Treasury Bill | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000004007 | United Kingdom Gilt | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000004007 | Government of Canada Real Return Bond, Inflation-Indexed | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000004007 | Commonwealth of Australia | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000004007 | Other Holdings Grouping | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 37.90% |
| C000004007 | United States | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 14.70% |
| C000004007 | Japan | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.50% |
| C000004007 | Canada | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.90% |
| C000004007 | China | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.60% |
| C000004007 | France | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.30% |
| C000004007 | United Kingdom | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.90% |
| C000004007 | Germany | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| C000004007 | Australia | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.80% |
| C000004007 | Indonesia | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000004008 | Government of Japan | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.50% |
| C000004008 | People's Republic of China | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.80% |
| C000004008 | U.S. Treasury Bills | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.90% |
| C000004008 | Republic of France | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| C000004008 | Government of Malaysia | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000004008 | Republic of Indonesia | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.30% |
| C000004008 | Canadian Treasury Bill | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000004008 | United Kingdom Gilt | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000004008 | Government of Canada Real Return Bond, Inflation-Indexed | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000004008 | Commonwealth of Australia | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000004008 | Other Holdings Grouping | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 37.90% |
| C000004008 | United States | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 14.70% |
| C000004008 | Japan | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.50% |
| C000004008 | Canada | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.90% |
| C000004008 | China | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.60% |
| C000004008 | France | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.30% |
| C000004008 | United Kingdom | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.90% |
| C000004008 | Germany | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| C000004008 | Australia | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.80% |
| C000004008 | Indonesia | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000159126 | Government of Japan | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.50% |
| C000159126 | People's Republic of China | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.80% |
| C000159126 | U.S. Treasury Bills | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.90% |
| C000159126 | Republic of France | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| C000159126 | Government of Malaysia | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000159126 | Republic of Indonesia | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.30% |
| C000159126 | Canadian Treasury Bill | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000159126 | United Kingdom Gilt | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000159126 | Government of Canada Real Return Bond, Inflation-Indexed | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000159126 | Commonwealth of Australia | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000159126 | Other Holdings Grouping | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 37.90% |
| C000159126 | United States | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 14.70% |
| C000159126 | Japan | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.50% |
| C000159126 | Canada | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.90% |
| C000159126 | China | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.60% |
| C000159126 | France | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.30% |
| C000159126 | United Kingdom | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.90% |
| C000159126 | Germany | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| C000159126 | Australia | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.80% |
| C000159126 | Indonesia | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000219335 | Government of Japan | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.50% |
| C000219335 | People's Republic of China | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.80% |
| C000219335 | U.S. Treasury Bills | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.90% |
| C000219335 | Republic of France | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| C000219335 | Government of Malaysia | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000219335 | Republic of Indonesia | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.30% |
| C000219335 | Canadian Treasury Bill | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000219335 | United Kingdom Gilt | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000219335 | Government of Canada Real Return Bond, Inflation-Indexed | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000219335 | Commonwealth of Australia | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000219335 | Other Holdings Grouping | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 37.90% |
| C000219335 | United States | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 14.70% |
| C000219335 | Japan | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.50% |
| C000219335 | Canada | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.90% |
| C000219335 | China | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.60% |
| C000219335 | France | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.30% |
| C000219335 | United Kingdom | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.90% |
| C000219335 | Germany | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| C000219335 | Australia | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.80% |
| C000219335 | Indonesia | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
