| Form N-CSR Cover | 12 Months Ended |
| Sep. 30, 2024 | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSR |
| Amendment Flag | false |
| Registrant Name | AB GLOBAL BOND FUND, INC. |
| Entity Central Index Key | 0000883676 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Sep. 30, 2024 |
| Shareholder Report | 12 Months Ended |
| Sep. 30, 2024 USD ($) Holding | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSR |
| Amendment Flag | false |
| Registrant Name | AB GLOBAL BOND FUND, INC. |
| Entity Central Index Key | 0000883676 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Sep. 30, 2024 |
| C000028113 | |
| Shareholder Report [Line Items] | |
| Fund Name | AB Global Bond Fund |
| Class Name | Class A |
| Trading Symbol | ANAGX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the AB Global Bond Fund (the “Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | Annual Shareholder Report |
| Additional Information [Text Block] | You can find additional information about the Fund at https://www.abfunds.com/link/AB/ANAGX-A. You can also request this information by contacting us at (800) 227 4618. |
| Additional Information Phone Number | (800) 227 4618 |
| Additional Information Website | https://www.abfunds.com/link/AB/ANAGX-A |
| Expenses [Text Block] | What were the Fund costs for the last year? (Based on a hypothetical $10,000 investment) Class Name Cost of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class A $84 0.80% |
| Expenses Paid, Amount | $ 84 |
| Expense Ratio, Percent | 0.80% |
| Factors Affecting Performance [Text Block] | How Did the Fund Perform Last Year? What Affected the Fund's Performance? During the 12-month period ended September 30, 2024, all share classes except for the C class outperformed the Bloomberg Global Aggregate Bond Index (USD hedged) (“the benchmark”), before sales charges. Country allocation contributed the most to performance, namely underweights to China and Canada, and an overweight to Japan. Security selection in eurozone and US investment-grade corporate bonds and emerging-market corporates was also beneficial. Additionally, sector allocation contributed mainly from an underweight to US Treasuries and off-benchmark exposure to US high-yield corporates. These gains offset losses from yield-curve positioning, particularly in South Korea, the US and the eurozone. At the sector allocation level, off-benchmark exposure to US Treasuries and inflation-linked bonds detracted from performance, while currency decisions were also a minor detractor. During both periods, the Fund used derivatives in the form of interest rate swaps and futures to manage and hedge duration risk and/or to take active yield-curve positioning. The Fund used currency forwards to hedge foreign currency exposure and to take active currency risk. Credit default swaps were used to hedge credit risk and as a tool to effectively gain exposure to specific sectors. |
| Performance Past Does Not Indicate Future [Text] | <span style="font-weight: 700; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: left;">The Fund’s past performance is not a good predictor of the Fund’s future performance.</span></p>" id="sjs-B24"><p style="box-sizing: border-box; color: rgb(0, 0, 0); display: block; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: left;"><span style="font-weight: 700; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: left;">The Fund’s past performance is not a good predictor of the Fund’s future performance.</span></p> |
| Line Graph [Table Text Block] | Class A Bloomberg Global Aggregate Bond Index (USD hedged) 09/14 $9,573 $10,000 09/15 $9,760 $10,314 09/16 $10,418 $10,989 09/17 $10,532 $10,969 09/18 $10,497 $11,060 09/19 $11,398 $12,237 09/20 $11,689 $12,743 09/21 $11,797 $12,672 09/22 $10,214 $11,145 09/23 $10,333 $11,378 09/24 $11,490 $12,588 |
| Average Annual Return [Table Text Block] | Class Name 1 Year 5 Years 10 Years Class A (without sales charges) 10.90 % 0.16 % 1.84 % Class A (with sales charges) 6.21 % - % 1.40 % Bloomberg Global Aggregate Bond Index (USD hedged) 10.63 % 0.57 % 2.33 % |
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or the redemption or sale of Fund shares. Visit https://www.abfunds.com/link/AB/ANAGX-A for the most recent performance information. |
| AssetsNet | $ 5,823,520,550 |
| Holdings Count | Holding | 1,694 |
| Advisory Fees Paid, Amount | $ 26,054,282 |
| InvestmentCompanyPortfolioTurnover | 302% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net Assets $5,823,520,550 # of Portfolio Holdings 1,694 Portfolio Turnover Rate 302% Total Advisory Fees Paid $26,054,282 |
| Holdings [Text Block] | Security Type Breakdown Value Value Governments - Treasuries 43.8% Corporates - Investment Grade 26.2% Mortgage Pass-Throughs 13.7% Covered Bonds 3.1% Collateralized Mortgage Obligations 2.9% Collateralized Loan Obligations 2.6% Local Governments - Provincial Bonds 2.3% Asset-Backed Securities 2.1% Inflation-Linked Securities 1.9% Supranationals 1.8% Governments - Sovereign Bonds 1.5% Local Governments - Regional Bonds 1.4% Commercial Mortgage-Backed Securities 1.4% Other 4.7% Short-Term Investments 1.9% Other Assets less Liabilities (11.3)% |
| Material Fund Change [Text Block] | |
| C000057412 | |
| Shareholder Report [Line Items] | |
| Fund Name | AB Global Bond Fund |
| Class Name | Advisor Class |
| Trading Symbol | ANAYX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the AB Global Bond Fund (the “Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | Annual Shareholder Report |
| Additional Information [Text Block] | You can find additional information about the Fund at https://www.abfunds.com/link/AB/ANAYX-A. You can also request this information by contacting us at (800) 227 4618. |
| Additional Information Phone Number | (800) 227 4618 |
| Additional Information Website | https://www.abfunds.com/link/AB/ANAYX-A |
| Expenses [Text Block] | What were the Fund costs for the last year? (Based on a hypothetical $10,000 investment) Class Name Cost of a $10,000 investment Costs paid as a percentage of a $10,000 investment Advisor Class $58 0.55% |
| Expenses Paid, Amount | $ 58 |
| Expense Ratio, Percent | 0.55% |
| Factors Affecting Performance [Text Block] | How Did the Fund Perform Last Year? What Affected the Fund's Performance? During the 12-month period ended September 30, 2024, all share classes except for the C class outperformed the Bloomberg Global Aggregate Bond Index (USD hedged) (“the benchmark”), before sales charges. Country allocation contributed the most to performance, namely underweights to China and Canada, and an overweight to Japan. Security selection in eurozone and US investment-grade corporate bonds and emerging-market corporates was also beneficial. Additionally, sector allocation contributed mainly from an underweight to US Treasuries and off-benchmark exposure to US high-yield corporates. These gains offset losses from yield-curve positioning, particularly in South Korea, the US and the eurozone. At the sector allocation level, off-benchmark exposure to US Treasuries and inflation-linked bonds detracted from performance, while currency decisions were also a minor detractor. During both periods, the Fund used derivatives in the form of interest rate swaps and futures to manage and hedge duration risk and/or to take active yield-curve positioning. The Fund used currency forwards to hedge foreign currency exposure and to take active currency risk. Credit default swaps were used to hedge credit risk and as a tool to effectively gain exposure to specific sectors. |
| Performance Past Does Not Indicate Future [Text] | <span style="font-weight: 700; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: left;">The Fund’s past performance is not a good predictor of the Fund’s future performance.</span></p>" id="sjs-B49"><p style="box-sizing: border-box; color: rgb(0, 0, 0); display: block; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: left;"><span style="font-weight: 700; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: left;">The Fund’s past performance is not a good predictor of the Fund’s future performance.</span></p> |
| Line Graph [Table Text Block] | Advisor Class Bloomberg Global Aggregate Bond Index (USD hedged) 09/14 $10,000 $10,000 09/15 $10,226 $10,314 09/16 $10,942 $10,989 09/17 $11,090 $10,969 09/18 $11,083 $11,060 09/19 $12,065 $12,237 09/20 $12,405 $12,743 09/21 $12,551 $12,672 09/22 $10,905 $11,145 09/23 $11,043 $11,378 09/24 $12,316 $12,588 |
| Average Annual Return [Table Text Block] | Class Name 1 Year 5 Years 10 Years Advisor Class 11.19 % 0.41 % 2.10 % Bloomberg Global Aggregate Bond Index (USD hedged) 10.63 % 0.57 % 2.33 % |
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or the redemption or sale of Fund shares. Visit https://www.abfunds.com/link/AB/ANAYX-A for the most recent performance information. |
| AssetsNet | $ 5,823,520,550 |
| Holdings Count | Holding | 1,694 |
| Advisory Fees Paid, Amount | $ 26,054,282 |
| InvestmentCompanyPortfolioTurnover | 302% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net Assets $5,823,520,550 # of Portfolio Holdings 1,694 Portfolio Turnover Rate 302% Total Advisory Fees Paid $26,054,282 |
| Holdings [Text Block] | Security Type Breakdown Value Value Governments - Treasuries 43.8% Corporates - Investment Grade 26.2% Mortgage Pass-Throughs 13.7% Covered Bonds 3.1% Collateralized Mortgage Obligations 2.9% Collateralized Loan Obligations 2.6% Local Governments - Provincial Bonds 2.3% Asset-Backed Securities 2.1% Inflation-Linked Securities 1.9% Supranationals 1.8% Governments - Sovereign Bonds 1.5% Local Governments - Regional Bonds 1.4% Commercial Mortgage-Backed Securities 1.4% Other 4.7% Short-Term Investments 1.9% Other Assets less Liabilities (11.3)% |
| Material Fund Change [Text Block] | |
| C000028115 | |
| Shareholder Report [Line Items] | |
| Fund Name | AB Global Bond Fund |
| Class Name | Class C |
| Trading Symbol | ANACX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the AB Global Bond Fund (the “Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | Annual Shareholder Report |
| Additional Information [Text Block] | You can find additional information about the Fund at https://www.abfunds.com/link/AB/ANACX-A. You can also request this information by contacting us at (800) 227 4618. |
| Additional Information Phone Number | (800) 227 4618 |
| Additional Information Website | https://www.abfunds.com/link/AB/ANACX-A |
| Expenses [Text Block] | What were the Fund costs for the last year? (Based on a hypothetical $10,000 investment) Class Name Cost of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class C $163 1.55% |
| Expenses Paid, Amount | $ 163 |
| Expense Ratio, Percent | 1.55% |
| Factors Affecting Performance [Text Block] | How Did the Fund Perform Last Year? What Affected the Fund's Performance? During the 12-month period ended September 30, 2024, all share classes except for the C class outperformed the Bloomberg Global Aggregate Bond Index (USD hedged) (“the benchmark”), before sales charges. Country allocation contributed the most to performance, namely underweights to China and Canada, and an overweight to Japan. Security selection in eurozone and US investment-grade corporate bonds and emerging-market corporates was also beneficial. Additionally, sector allocation contributed mainly from an underweight to US Treasuries and off-benchmark exposure to US high-yield corporates. These gains offset losses from yield-curve positioning, particularly in South Korea, the US and the eurozone. At the sector allocation level, off-benchmark exposure to US Treasuries and inflation-linked bonds detracted from performance, while currency decisions were also a minor detractor. During both periods, the Fund used derivatives in the form of interest rate swaps and futures to manage and hedge duration risk and/or to take active yield-curve positioning. The Fund used currency forwards to hedge foreign currency exposure and to take active currency risk. Credit default swaps were used to hedge credit risk and as a tool to effectively gain exposure to specific sectors. |
| Performance Past Does Not Indicate Future [Text] | <span style="font-weight: 700; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: left;">The Fund’s past performance is not a good predictor of the Fund’s future performance.</span></p>" id="sjs-B74"><p style="box-sizing: border-box; color: rgb(0, 0, 0); display: block; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: left;"><span style="font-weight: 700; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: left;">The Fund’s past performance is not a good predictor of the Fund’s future performance.</span></p> |
| Line Graph [Table Text Block] | Class C Bloomberg Global Aggregate Bond Index (USD hedged) 09/14 $10,000 $10,000 09/15 $10,123 $10,314 09/16 $10,744 $10,989 09/17 $10,780 $10,969 09/18 $10,645 $11,060 09/19 $11,482 $12,237 09/20 $11,673 $12,743 09/21 $11,705 $12,672 09/22 $10,069 $11,145 09/23 $10,095 $11,378 09/24 $11,132 $12,588 |
| Average Annual Return [Table Text Block] | Class Name 1 Year 5 Years 10 Years Class C (without sales charges) 10.03 % - % 1.08 % Class C (with sales charges) 9.03 % - % 1.08 % Bloomberg Global Aggregate Bond Index (USD hedged) 10.63 % 0.57 % 2.33 % |
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or the redemption or sale of Fund shares. Visit https://www.abfunds.com/link/AB/ANACX-A for the most recent performance information. |
| AssetsNet | $ 5,823,520,550 |
| Holdings Count | Holding | 1,694 |
| Advisory Fees Paid, Amount | $ 26,054,282 |
| InvestmentCompanyPortfolioTurnover | 302% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net Assets $5,823,520,550 # of Portfolio Holdings 1,694 Portfolio Turnover Rate 302% Total Advisory Fees Paid $26,054,282 |
| Holdings [Text Block] | Security Type Breakdown Value Value Governments - Treasuries 43.8% Corporates - Investment Grade 26.2% Mortgage Pass-Throughs 13.7% Covered Bonds 3.1% Collateralized Mortgage Obligations 2.9% Collateralized Loan Obligations 2.6% Local Governments - Provincial Bonds 2.3% Asset-Backed Securities 2.1% Inflation-Linked Securities 1.9% Supranationals 1.8% Governments - Sovereign Bonds 1.5% Local Governments - Regional Bonds 1.4% Commercial Mortgage-Backed Securities 1.4% Other 4.7% Short-Term Investments 1.9% Other Assets less Liabilities (11.3)% |
| Material Fund Change [Text Block] | |
| C000057409 | |
| Shareholder Report [Line Items] | |
| Fund Name | AB Global Bond Fund |
| Class Name | Class I |
| Trading Symbol | ANAIX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the AB Global Bond Fund (the “Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | Annual Shareholder Report |
| Additional Information [Text Block] | You can find additional information about the Fund at https://www.abfunds.com/link/AB/ANAIX-A. You can also request this information by contacting us at (800) 227 4618. |
| Additional Information Phone Number | (800) 227 4618 |
| Additional Information Website | https://www.abfunds.com/link/AB/ANAIX-A |
| Expenses [Text Block] | What were the Fund costs for the last year? (Based on a hypothetical $10,000 investment) Class Name Cost of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class I $62 0.59% |
| Expenses Paid, Amount | $ 62 |
| Expense Ratio, Percent | 0.59% |
| Factors Affecting Performance [Text Block] | How Did the Fund Perform Last Year? What Affected the Fund's Performance? During the 12-month period ended September 30, 2024, all share classes except for the C class outperformed the Bloomberg Global Aggregate Bond Index (USD hedged) (“the benchmark”), before sales charges. Country allocation contributed the most to performance, namely underweights to China and Canada, and an overweight to Japan. Security selection in eurozone and US investment-grade corporate bonds and emerging-market corporates was also beneficial. Additionally, sector allocation contributed mainly from an underweight to US Treasuries and off-benchmark exposure to US high-yield corporates. These gains offset losses from yield-curve positioning, particularly in South Korea, the US and the eurozone. At the sector allocation level, off-benchmark exposure to US Treasuries and inflation-linked bonds detracted from performance, while currency decisions were also a minor detractor. During both periods, the Fund used derivatives in the form of interest rate swaps and futures to manage and hedge duration risk and/or to take active yield-curve positioning. The Fund used currency forwards to hedge foreign currency exposure and to take active currency risk. Credit default swaps were used to hedge credit risk and as a tool to effectively gain exposure to specific sectors. |
| Performance Past Does Not Indicate Future [Text] | <span style="font-weight: 700; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: left;">The Fund’s past performance is not a good predictor of the Fund’s future performance.</span></p>" id="sjs-B99"><p style="box-sizing: border-box; color: rgb(0, 0, 0); display: block; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: left;"><span style="font-weight: 700; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: left;">The Fund’s past performance is not a good predictor of the Fund’s future performance.</span></p> |
| Line Graph [Table Text Block] | Class I Bloomberg Global Aggregate Bond Index (USD hedged) 09/14 $10,000 $10,000 09/15 $10,227 $10,314 09/16 $10,944 $10,989 09/17 $11,092 $10,969 09/18 $11,089 $11,060 09/19 $12,073 $12,237 09/20 $12,409 $12,743 09/21 $12,569 $12,672 09/22 $10,907 $11,145 09/23 $11,044 $11,378 09/24 $12,311 $12,588 |
| Average Annual Return [Table Text Block] | Class Name 1 Year 5 Years 10 Years Class I 11.14 % 0.39 % 2.10 % Bloomberg Global Aggregate Bond Index (USD hedged) 10.63 % 0.57 % 2.33 % |
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or the redemption or sale of Fund shares. Visit https://www.abfunds.com/link/AB/ANAIX-A for the most recent performance information. |
| AssetsNet | $ 5,823,520,550 |
| Holdings Count | Holding | 1,694 |
| Advisory Fees Paid, Amount | $ 26,054,282 |
| InvestmentCompanyPortfolioTurnover | 302% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net Assets $5,823,520,550 # of Portfolio Holdings 1,694 Portfolio Turnover Rate 302% Total Advisory Fees Paid $26,054,282 |
| Holdings [Text Block] | Security Type Breakdown Value Value Governments - Treasuries 43.8% Corporates - Investment Grade 26.2% Mortgage Pass-Throughs 13.7% Covered Bonds 3.1% Collateralized Mortgage Obligations 2.9% Collateralized Loan Obligations 2.6% Local Governments - Provincial Bonds 2.3% Asset-Backed Securities 2.1% Inflation-Linked Securities 1.9% Supranationals 1.8% Governments - Sovereign Bonds 1.5% Local Governments - Regional Bonds 1.4% Commercial Mortgage-Backed Securities 1.4% Other 4.7% Short-Term Investments 1.9% Other Assets less Liabilities (11.3)% |
| Material Fund Change [Text Block] | |
| C000135460 | |
| Shareholder Report [Line Items] | |
| Fund Name | AB Global Bond Fund |
| Class Name | Class Z |
| Trading Symbol | ANAZX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the AB Global Bond Fund (the “Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | Annual Shareholder Report |
| Additional Information [Text Block] | You can find additional information about the Fund at https://www.abfunds.com/link/AB/ANAZX-A. You can also request this information by contacting us at (800) 227 4618. |
| Additional Information Phone Number | (800) 227 4618 |
| Additional Information Website | https://www.abfunds.com/link/AB/ANAZX-A |
| Expenses [Text Block] | What were the Fund costs for the last year? (Based on a hypothetical $10,000 investment) Class Name Cost of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class Z $55 0.52% |
| Expenses Paid, Amount | $ 55 |
| Expense Ratio, Percent | 0.52% |
| Factors Affecting Performance [Text Block] | How Did the Fund Perform Last Year? What Affected the Fund's Performance? During the 12-month period ended September 30, 2024, all share classes except for the C class outperformed the Bloomberg Global Aggregate Bond Index (USD hedged) (“the benchmark”), before sales charges. Country allocation contributed the most to performance, namely underweights to China and Canada, and an overweight to Japan. Security selection in eurozone and US investment-grade corporate bonds and emerging-market corporates was also beneficial. Additionally, sector allocation contributed mainly from an underweight to US Treasuries and off-benchmark exposure to US high-yield corporates. These gains offset losses from yield-curve positioning, particularly in South Korea, the US and the eurozone. At the sector allocation level, off-benchmark exposure to US Treasuries and inflation-linked bonds detracted from performance, while currency decisions were also a minor detractor. During both periods, the Fund used derivatives in the form of interest rate swaps and futures to manage and hedge duration risk and/or to take active yield-curve positioning. The Fund used currency forwards to hedge foreign currency exposure and to take active currency risk. Credit default swaps were used to hedge credit risk and as a tool to effectively gain exposure to specific sectors. |
| Performance Past Does Not Indicate Future [Text] | <span style="font-weight: 700; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: left;">The Fund’s past performance is not a good predictor of the Fund’s future performance.</span></p>" id="sjs-B124"><p style="box-sizing: border-box; color: rgb(0, 0, 0); display: block; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: left;"><span style="font-weight: 700; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: left;">The Fund’s past performance is not a good predictor of the Fund’s future performance.</span></p> |
| Line Graph [Table Text Block] | Class Z Bloomberg Global Aggregate Bond Index (USD hedged) 09/14 $10,000 $10,000 09/15 $10,232 $10,314 09/16 $10,967 $10,989 09/17 $11,108 $10,969 09/18 $11,110 $11,060 09/19 $12,102 $12,237 09/20 $12,445 $12,743 09/21 $12,612 $12,672 09/22 $10,950 $11,145 09/23 $11,092 $11,378 09/24 $12,391 $12,588 |
| Average Annual Return [Table Text Block] | Class Name 1 Year 5 Years 10 Years Class Z 11.38 % 0.47 % 2.17 % Bloomberg Global Aggregate Bond Index (USD hedged) 10.63 % 0.57 % 2.33 % |
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or the redemption or sale of Fund shares. Visit https://www.abfunds.com/link/AB/ANAZX-A for the most recent performance information. |
| AssetsNet | $ 5,823,520,550 |
| Holdings Count | Holding | 1,694 |
| Advisory Fees Paid, Amount | $ 26,054,282 |
| InvestmentCompanyPortfolioTurnover | 302% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net Assets $5,823,520,550 # of Portfolio Holdings 1,694 Portfolio Turnover Rate 302% Total Advisory Fees Paid $26,054,282 |
| Holdings [Text Block] | Security Type Breakdown Value Value Governments - Treasuries 43.8% Corporates - Investment Grade 26.2% Mortgage Pass-Throughs 13.7% Covered Bonds 3.1% Collateralized Mortgage Obligations 2.9% Collateralized Loan Obligations 2.6% Local Governments - Provincial Bonds 2.3% Asset-Backed Securities 2.1% Inflation-Linked Securities 1.9% Supranationals 1.8% Governments - Sovereign Bonds 1.5% Local Governments - Regional Bonds 1.4% Commercial Mortgage-Backed Securities 1.4% Other 4.7% Short-Term Investments 1.9% Other Assets less Liabilities (11.3)% |
| Material Fund Change [Text Block] |
| Shareholder Report, Line Graph (Details) - USD ($) | 12 Months Ended | ||||||||||
| Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2015 | Sep. 30, 2014 | |
| C000028113 | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | Class A | ||||||||||
| Account Value | $ 11,490 | $ 10,333 | $ 10,214 | $ 11,797 | $ 11,689 | $ 11,398 | $ 10,497 | $ 10,532 | $ 10,418 | $ 9,760 | $ 9,573 |
| C000057412 | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | Advisor Class | ||||||||||
| Account Value | $ 12,316 | 11,043 | 10,905 | 12,551 | 12,405 | 12,065 | 11,083 | 11,090 | 10,942 | 10,226 | 10,000 |
| C000028115 | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | Class C | ||||||||||
| Account Value | $ 11,132 | 10,095 | 10,069 | 11,705 | 11,673 | 11,482 | 10,645 | 10,780 | 10,744 | 10,123 | 10,000 |
| C000057409 | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | Class I | ||||||||||
| Account Value | $ 12,311 | 11,044 | 10,907 | 12,569 | 12,409 | 12,073 | 11,089 | 11,092 | 10,944 | 10,227 | 10,000 |
| C000135460 | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | Class Z | ||||||||||
| Account Value | $ 12,391 | 11,092 | 10,950 | 12,612 | 12,445 | 12,102 | 11,110 | 11,108 | 10,967 | 10,232 | 10,000 |
| Bloomberg Global Aggregate Bond Index (USD hedged) | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | Bloomberg Global Aggregate Bond Index (USD hedged) | ||||||||||
| Account Value | $ 12,588 | 11,378 | 11,145 | 12,672 | 12,743 | 12,237 | 11,060 | 10,969 | 10,989 | 10,314 | 10,000 |
| Bloomberg Global Aggregate Bond Index (USD hedged) | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | Bloomberg Global Aggregate Bond Index (USD hedged) | ||||||||||
| Account Value | $ 12,588 | 11,378 | 11,145 | 12,672 | 12,743 | 12,237 | 11,060 | 10,969 | 10,989 | 10,314 | 10,000 |
| Bloomberg Global Aggregate Bond Index (USD hedged) | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | Bloomberg Global Aggregate Bond Index (USD hedged) | ||||||||||
| Account Value | $ 12,588 | 11,378 | 11,145 | 12,672 | 12,743 | 12,237 | 11,060 | 10,969 | 10,989 | 10,314 | 10,000 |
| Bloomberg Global Aggregate Bond Index (USD hedged) | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | Bloomberg Global Aggregate Bond Index (USD hedged) | ||||||||||
| Account Value | $ 12,588 | 11,378 | 11,145 | 12,672 | 12,743 | 12,237 | 11,060 | 10,969 | 10,989 | 10,314 | 10,000 |
| Bloomberg Global Aggregate Bond Index (USD hedged) | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | Bloomberg Global Aggregate Bond Index (USD hedged) | ||||||||||
| Account Value | $ 12,588 | $ 11,378 | $ 11,145 | $ 12,672 | $ 12,743 | $ 12,237 | $ 11,060 | $ 10,969 | $ 10,989 | $ 10,314 | $ 10,000 |
| Shareholder Report, Average Annual Return (Details) | 12 Months Ended | 60 Months Ended | 120 Months Ended |
| Sep. 30, 2024 | Sep. 30, 2024 | Sep. 30, 2024 | |
| C000028113 | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Class A | ||
| Average Annual Return, Percent | 6.21% | (0.69%) | 1.40% |
| C000057412 | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Advisor Class | ||
| C000028115 | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Class C | ||
| Average Annual Return, Percent | 9.03% | (0.62%) | 1.08% |
| C000057409 | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Class I | ||
| C000135460 | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Class Z | ||
| Without Sales Load [Member] | C000028113 | |||
| Average Annual Return [Line Items] | |||
| Average Annual Return, Percent | 10.90% | 0.16% | 1.84% |
| Without Sales Load [Member] | C000057412 | |||
| Average Annual Return [Line Items] | |||
| Average Annual Return, Percent | 11.19% | 0.41% | 2.10% |
| Without Sales Load [Member] | C000028115 | |||
| Average Annual Return [Line Items] | |||
| Average Annual Return, Percent | 10.03% | (0.62%) | 1.08% |
| Without Sales Load [Member] | C000057409 | |||
| Average Annual Return [Line Items] | |||
| Average Annual Return, Percent | 11.14% | 0.39% | 2.10% |
| Without Sales Load [Member] | C000135460 | |||
| Average Annual Return [Line Items] | |||
| Average Annual Return, Percent | 11.38% | 0.47% | 2.17% |
| Bloomberg Global Aggregate Bond Index (USD hedged) | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Bloomberg Global Aggregate Bond Index (USD hedged) | ||
| Average Annual Return, Percent | 10.63% | 0.57% | 2.33% |
| Bloomberg Global Aggregate Bond Index (USD hedged) | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Bloomberg Global Aggregate Bond Index (USD hedged) | ||
| Average Annual Return, Percent | 10.63% | 0.57% | 2.33% |
| Bloomberg Global Aggregate Bond Index (USD hedged) | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Bloomberg Global Aggregate Bond Index (USD hedged) | ||
| Average Annual Return, Percent | 10.63% | 0.57% | 2.33% |
| Bloomberg Global Aggregate Bond Index (USD hedged) | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Bloomberg Global Aggregate Bond Index (USD hedged) | ||
| Average Annual Return, Percent | 10.63% | 0.57% | 2.33% |
| Bloomberg Global Aggregate Bond Index (USD hedged) | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Bloomberg Global Aggregate Bond Index (USD hedged) | ||
| Average Annual Return, Percent | 10.63% | 0.57% | 2.33% |
| Shareholder Report, Holdings (Details) | Sep. 30, 2024 |
| C000028113 | Supranational | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000028113 | Other Assets and Liabilities Country Weighting | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (11.30%) |
| C000028113 | Short-Term Investments Asset Weighting | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (11.30%) |
| C000028113 | USD | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.40% |
| C000028113 | Short-Term Investments Country Weighting | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000028113 | United States | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 51.20% |
| C000028113 | Japan | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.70% |
| C000028113 | Canada | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.50% |
| C000028113 | United Kingdom | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.20% |
| C000028113 | China | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.40% |
| C000028113 | France | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.80% |
| C000028113 | Germany | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000028113 | Italy | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| C000028113 | Spain | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000028113 | Australia | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000028113 | Colombia | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
| C000028113 | South Korea | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
| C000028113 | Governments - Treasuries | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 43.80% |
| C000028113 | Corporates - Investment Grade | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 26.20% |
| C000028113 | Mortgage Pass-Throughs | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.70% |
| C000028113 | Covered Bonds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000028113 | Collateralized Mortgage Obligations | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| C000028113 | Collateralized Loan Obligations | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| C000028113 | Local Governments - Provincial Bonds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000028113 | Asset-Backed Securities | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000028113 | Inflation-Linked Securities | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000028113 | Supranationals | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000028113 | Governments - Sovereign Bonds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| C000028113 | Local Governments - Regional Bonds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
| C000028113 | Commercial Mortgage-Backed Securities | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
| C000028113 | Other | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| C000028113 | Short-Term Investments | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000057412 | Supranational | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000057412 | Other Assets and Liabilities Country Weighting | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (11.30%) |
| C000057412 | Short-Term Investments Asset Weighting | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (11.30%) |
| C000057412 | USD | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.40% |
| C000057412 | Short-Term Investments Country Weighting | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000057412 | United States | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 51.20% |
| C000057412 | Japan | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.70% |
| C000057412 | Canada | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.50% |
| C000057412 | United Kingdom | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.20% |
| C000057412 | China | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.40% |
| C000057412 | France | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.80% |
| C000057412 | Germany | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000057412 | Italy | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| C000057412 | Spain | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000057412 | Australia | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000057412 | Colombia | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
| C000057412 | South Korea | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
| C000057412 | Governments - Treasuries | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 43.80% |
| C000057412 | Corporates - Investment Grade | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 26.20% |
| C000057412 | Mortgage Pass-Throughs | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.70% |
| C000057412 | Covered Bonds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000057412 | Collateralized Mortgage Obligations | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| C000057412 | Collateralized Loan Obligations | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| C000057412 | Local Governments - Provincial Bonds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000057412 | Asset-Backed Securities | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000057412 | Inflation-Linked Securities | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000057412 | Supranationals | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000057412 | Governments - Sovereign Bonds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| C000057412 | Local Governments - Regional Bonds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
| C000057412 | Commercial Mortgage-Backed Securities | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
| C000057412 | Other | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| C000057412 | Short-Term Investments | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000028115 | Supranational | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000028115 | Other Assets and Liabilities Country Weighting | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (11.30%) |
| C000028115 | Short-Term Investments Asset Weighting | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (11.30%) |
| C000028115 | USD | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.40% |
| C000028115 | Short-Term Investments Country Weighting | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000028115 | United States | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 51.20% |
| C000028115 | Japan | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.70% |
| C000028115 | Canada | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.50% |
| C000028115 | United Kingdom | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.20% |
| C000028115 | China | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.40% |
| C000028115 | France | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.80% |
| C000028115 | Germany | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000028115 | Italy | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| C000028115 | Spain | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000028115 | Australia | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000028115 | Colombia | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
| C000028115 | South Korea | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
| C000028115 | Governments - Treasuries | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 43.80% |
| C000028115 | Corporates - Investment Grade | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 26.20% |
| C000028115 | Mortgage Pass-Throughs | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.70% |
| C000028115 | Covered Bonds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000028115 | Collateralized Mortgage Obligations | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| C000028115 | Collateralized Loan Obligations | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| C000028115 | Local Governments - Provincial Bonds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000028115 | Asset-Backed Securities | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000028115 | Inflation-Linked Securities | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000028115 | Supranationals | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000028115 | Governments - Sovereign Bonds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| C000028115 | Local Governments - Regional Bonds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
| C000028115 | Commercial Mortgage-Backed Securities | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
| C000028115 | Other | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| C000028115 | Short-Term Investments | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000057409 | Supranational | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000057409 | Other Assets and Liabilities Country Weighting | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (11.30%) |
| C000057409 | Short-Term Investments Asset Weighting | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (11.30%) |
| C000057409 | USD | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.40% |
| C000057409 | Short-Term Investments Country Weighting | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000057409 | United States | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 51.20% |
| C000057409 | Japan | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.70% |
| C000057409 | Canada | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.50% |
| C000057409 | United Kingdom | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.20% |
| C000057409 | China | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.40% |
| C000057409 | France | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.80% |
| C000057409 | Germany | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000057409 | Italy | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| C000057409 | Spain | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000057409 | Australia | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000057409 | Colombia | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
| C000057409 | South Korea | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
| C000057409 | Governments - Treasuries | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 43.80% |
| C000057409 | Corporates - Investment Grade | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 26.20% |
| C000057409 | Mortgage Pass-Throughs | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.70% |
| C000057409 | Covered Bonds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000057409 | Collateralized Mortgage Obligations | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| C000057409 | Collateralized Loan Obligations | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| C000057409 | Local Governments - Provincial Bonds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000057409 | Asset-Backed Securities | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000057409 | Inflation-Linked Securities | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000057409 | Supranationals | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000057409 | Governments - Sovereign Bonds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| C000057409 | Local Governments - Regional Bonds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
| C000057409 | Commercial Mortgage-Backed Securities | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
| C000057409 | Other | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| C000057409 | Short-Term Investments | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000135460 | Supranational | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000135460 | Other Assets and Liabilities Country Weighting | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (11.30%) |
| C000135460 | Short-Term Investments Asset Weighting | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (11.30%) |
| C000135460 | USD | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.40% |
| C000135460 | Short-Term Investments Country Weighting | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000135460 | United States | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 51.20% |
| C000135460 | Japan | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.70% |
| C000135460 | Canada | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.50% |
| C000135460 | United Kingdom | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.20% |
| C000135460 | China | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.40% |
| C000135460 | France | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.80% |
| C000135460 | Germany | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000135460 | Italy | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| C000135460 | Spain | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000135460 | Australia | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000135460 | Colombia | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
| C000135460 | South Korea | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
| C000135460 | Governments - Treasuries | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 43.80% |
| C000135460 | Corporates - Investment Grade | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 26.20% |
| C000135460 | Mortgage Pass-Throughs | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.70% |
| C000135460 | Covered Bonds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000135460 | Collateralized Mortgage Obligations | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| C000135460 | Collateralized Loan Obligations | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| C000135460 | Local Governments - Provincial Bonds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000135460 | Asset-Backed Securities | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000135460 | Inflation-Linked Securities | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000135460 | Supranationals | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000135460 | Governments - Sovereign Bonds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| C000135460 | Local Governments - Regional Bonds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
| C000135460 | Commercial Mortgage-Backed Securities | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
| C000135460 | Other | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| C000135460 | Short-Term Investments | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
