Capital World Bond Fund N-CSRS 30 Aug 24 Certified semi-annual shareholder report (management investment company) Financial data

Form N-CSR Cover

Form N-CSR Cover	6 Months Ended
	Jun. 30, 2024
Shareholder Report [Line Items]
Document Type	N-CSRS
Amendment Flag	false
Registrant Name	Capital World Bond Fund
Entity Central Index Key	0000812303
Entity Investment Company Type	N-1A
Document Period End Date	Jun. 30, 2024

Shareholder Report

Shareholder Report	6 Months Ended
	Jun. 30, 2024 USD ($) Holdings
Shareholder Report [Line Items]
Document Type	N-CSRS
Amendment Flag	false
Registrant Name	Capital World Bond Fund
Entity Central Index Key	0000812303
Entity Investment Company Type	N-1A
Document Period End Date	Jun. 30, 2024
Capital World Bond Fund Class R-6 - RCWGX
Shareholder Report [Line Items]
Fund Name	Capital World Bond Fund®
Class Name	Class R-6
Trading Symbol	RCWGX
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about Capital World Bond Fund for the period from January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	semi-annual shareholder report
Additional Information [Text Block]	You can find additional information about the fund at capitalgroup.com/mutual-fund-literature-R6
Additional Information Phone Number	(800) 421-4225
Additional Information Website	capitalgroup.com/mutual-fund-literature-R6
Expenses [Text Block]	What were the fund costs for the last six months? hypothetical 10,000 investment Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class R-6 $24 0.49%*
Expenses Paid, Amount	$ 24
Expense Ratio, Percent	0.49%	[1]
Net Assets	$ 9,955,000,000
Holdings Count | Holdings	2,074
Investment Company, Portfolio Turnover	167%
Additional Fund Statistics [Text Block]	Key fund statistics Fund net assets (in millions) $ Total number of portfolio holdings 2,074 Portfolio turnover rate including 167% Portfolio turnover rate excluding mortgage dollar roll transactions 37%
Holdings [Text Block]	Portfolio holdings by asset type *Includes derivatives.
Capital World Bond Fund Class R-5 - RCWFX
Shareholder Report [Line Items]
Fund Name	Capital World Bond Fund®
Class Name	Class R-5
Trading Symbol	RCWFX
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about Capital World Bond Fund for the period from January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	semi-annual shareholder report
Additional Information [Text Block]	You can find additional information about the fund at capitalgroup.com/mutual-fund-literature-R5
Additional Information Phone Number	(800) 421-4225
Additional Information Website	capitalgroup.com/mutual-fund-literature-R5
Expenses [Text Block]	What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class R-5 $26 0.54%* *Annualized
Expenses Paid, Amount	$ 26
Expense Ratio, Percent	0.54%	[1]
Net Assets	$ 9,955,000,000
Holdings Count | Holdings	2,074
Investment Company, Portfolio Turnover	167%
Additional Fund Statistics [Text Block]	Key fund statistics Fund net assets (in millions) $9,955 Total number of portfolio holdings 2,074 Portfolio turnover rate including 167% Portfolio turnover rate excluding mortgage dollar roll transactions 37%
Holdings [Text Block]	Portfolio holdings by asset type *Includes derivatives.
Capital World Bond Fund Class R-5E - RCWHX
Shareholder Report [Line Items]
Fund Name	Capital World Bond Fund
Class Name	Class R-5E
Trading Symbol	RCWHX
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about Capital World Bond Fund for the period from January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	semi-annual shareholder report
Additional Information [Text Block]	You can find additional information about the fund at capitalgroup.com/mutual-fund-literature-R5E
Additional Information Phone Number	(800) 421-4225
Additional Information Website	capitalgroup.com/mutual-fund-literature-R5E
Expenses [Text Block]	What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class R-5E $31 0.64%* *Annualized
Expenses Paid, Amount	$ 31
Expense Ratio, Percent	0.64%	[1]
Net Assets	$ 9,955,000,000
Holdings Count | Holdings	2,074
Investment Company, Portfolio Turnover	167%
Additional Fund Statistics [Text Block]	Key fund statistics Fund net assets (in millions) $9,955 Total number of portfolio holdings 2,074 Portfolio turnover rate including 167% Portfolio turnover rate excluding mortgage dollar roll transactions 37%
Holdings [Text Block]	Portfolio holdings by asset type *Includes derivatives.
Capital World Bond Fund Class R-4 - RCWEX
Shareholder Report [Line Items]
Fund Name	Capital World Bond Fund®
Class Name	Class R-4
Trading Symbol	RCWEX
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about Capital World Bond Fund for the period from January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	semi-annual shareholder report
Additional Information [Text Block]	You can find additional information about the fund at capitalgroup.com/mutual-fund-literature-R4
Additional Information Phone Number	(800) 421-4225
Additional Information Website	capitalgroup.com/mutual-fund-literature-R4
Expenses [Text Block]	What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class R-4 $41 0.83%* *Annualized
Expenses Paid, Amount	$ 41
Expense Ratio, Percent	0.83%	[1]
Net Assets	$ 9,955,000,000
Holdings Count | Holdings	2,074
Investment Company, Portfolio Turnover	167%
Additional Fund Statistics [Text Block]	Key fund statistics Fund net assets (in millions) $9,955 Total number of portfolio holdings 2,074 Portfolio turnover rate including 167% Portfolio turnover rate excluding mortgage dollar roll transactions 37%
Holdings [Text Block]	Portfolio holdings by asset type *Includes derivatives.
Capital World Bond Fund Class R-3 - RCWCX
Shareholder Report [Line Items]
Fund Name	Capital World Bond Fund®
Class Name	Class R-3
Trading Symbol	RCWCX
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about Capital World Bond Fund for the period from January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	semi-annual shareholder report
Additional Information [Text Block]	You can find additional information about the fund at capitalgroup.com/mutual-fund-literature-R3
Additional Information Phone Number	(800) 421-4225
Additional Information Website	capitalgroup.com/mutual-fund-literature-R3
Expenses [Text Block]	What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class R-3 $55 1.13%* *Annualized
Expenses Paid, Amount	$ 55
Expense Ratio, Percent	1.13%	[1]
Net Assets	$ 9,955,000,000
Holdings Count | Holdings	2,074
Investment Company, Portfolio Turnover	167%
Additional Fund Statistics [Text Block]	Key fund statistics Fund net assets (in millions) $9,955 Total number of portfolio holdings 2,074 Portfolio turnover rate including 167% Portfolio turnover rate excluding mortgage dollar roll transactions 37%
Holdings [Text Block]	Portfolio holdings by asset type *Includes derivatives.
Capital World Bond Fund Class R-2E - RCEBX
Shareholder Report [Line Items]
Fund Name	Capital World Bond Fund®
Class Name	Class R-2E
Trading Symbol	RCEBX
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about Capital World Bond Fund for the period from January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	semi-annual shareholder report
Additional Information [Text Block]	You can find additional information about the fund at capitalgroup.com/mutual-fund-literature-R2E
Additional Information Phone Number	(800) 421-4225
Additional Information Website	capitalgroup.com/mutual-fund-literature-R2E
Expenses [Text Block]	What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class R-2E $63 1.29%* *Annualized
Expenses Paid, Amount	$ 63
Expense Ratio, Percent	1.29%	[1]
Net Assets	$ 9,955,000,000
Holdings Count | Holdings	2,074
Investment Company, Portfolio Turnover	167%
Additional Fund Statistics [Text Block]	Key fund statistics Fund net assets (in millions) $9,955 Total number of portfolio holdings 2,074 Portfolio turnover rate including 167% Portfolio turnover rate excluding mortgage dollar roll transactions 37%
Holdings [Text Block]	Portfolio holdings by asset type *Includes derivatives.
Capital World Bond Fund Class R-2 - RCWBX
Shareholder Report [Line Items]
Fund Name	Capital World Bond Fund®
Class Name	Class R-2
Trading Symbol	RCWBX
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about Capital World Bond Fund for the period from January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	semi-annual shareholder report
Additional Information [Text Block]	You can find additional information about the fund at capitalgroup.com/mutual-fund-literature-R2
Additional Information Phone Number	(800) 421-4225
Additional Information Website	capitalgroup.com/mutual-fund-literature-R2
Expenses [Text Block]	What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class R-2 $77 1.58%* *Annualized
Expenses Paid, Amount	$ 77
Expense Ratio, Percent	1.58%	[1]
Net Assets	$ 9,955,000,000
Holdings Count | Holdings	2,074
Investment Company, Portfolio Turnover	167%
Additional Fund Statistics [Text Block]	Key fund statistics Fund net assets (in millions) $9,955 Total number of portfolio holdings 2,074 Portfolio turnover rate including 167% Portfolio turnover rate excluding mortgage dollar roll transactions 37%
Holdings [Text Block]	Portfolio holdings by asset type *Includes derivatives.
Capital World Bond Fund Class R-1 - RCWAX
Shareholder Report [Line Items]
Fund Name	Capital World Bond Fund®
Class Name	Class R-1
Trading Symbol	RCWAX
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about Capital World Bond Fund for the period from January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	semi-annual shareholder report
Additional Information [Text Block]	You can find additional information about the fund at capitalgroup.com/mutual-fund-literature-R1
Additional Information Phone Number	(800) 421-4225
Additional Information Website	capitalgroup.com/mutual-fund-literature-R1
Expenses [Text Block]	What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class R-1 $77 1.58%* *Annualized
Expenses Paid, Amount	$ 77
Expense Ratio, Percent	1.58%	[1]
Net Assets	$ 9,955,000,000
Holdings Count | Holdings	2,074
Investment Company, Portfolio Turnover	167%
Additional Fund Statistics [Text Block]	Key fund statistics Fund net assets (in millions) $9,955 Total number of portfolio holdings 2,074 Portfolio turnover rate including 167% Portfolio turnover rate excluding mortgage dollar roll transactions 37%
Holdings [Text Block]	Portfolio holdings by asset type *Includes derivatives.
Capital World Bond Fund Class 529-F-3 - FWBCX
Shareholder Report [Line Items]
Fund Name	Capital World Bond Fund®
Class Name	Class 529-F-3
Trading Symbol	FWBCX
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about Capital World Bond Fund for the period from January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	semi-annual shareholder report
Additional Information [Text Block]	You can find additional information about the fund at capitalgroup.com/mutual-fund-literature-529F3
Additional Information Phone Number	(800) 421-4225
Additional Information Website	capitalgroup.com/mutual-fund-literature-529F3
Expenses [Text Block]	What were the fund costs for the last six months? based Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 529-F-3 $26 0.53%* *Annualized
Expenses Paid, Amount	$ 26
Expense Ratio, Percent	0.53%	[1]
Net Assets	$ 9,955,000,000
Holdings Count | Holdings	2,074
Investment Company, Portfolio Turnover	167%
Additional Fund Statistics [Text Block]	Key fund statistics Fund net assets (in millions) $9,955 Total number of portfolio holdings 2,074 Portfolio turnover rate including 167% Portfolio turnover rate excluding mortgage dollar roll transactions 37%
Holdings [Text Block]	Portfolio holdings by asset type *Includes derivatives.
Capital World Bond Fund Class 529-F-2 - FCWBX
Shareholder Report [Line Items]
Fund Name	Capital World Bond Fund®
Class Name	Class 529-F-2
Trading Symbol	FCWBX
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about Capital World Bond Fund for the period from January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	semi-annual shareholder report
Additional Information [Text Block]	You can find additional information about the fund at capitalgroup.com/mutual-fund-literature-529F2
Additional Information Phone Number	(800) 421-4225
Additional Information Website	capitalgroup.com/mutual-fund-literature-529F2
Expenses [Text Block]	What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 529-F-2 $32 0.65%* *Annualized
Expenses Paid, Amount	$ 32
Expense Ratio, Percent	0.65%	[1]
Net Assets	$ 9,955,000,000
Holdings Count | Holdings	2,074
Investment Company, Portfolio Turnover	167%
Additional Fund Statistics [Text Block]	Key fund statistics Fund net assets (in millions) $9,955 Total number of portfolio holdings 2,074 Portfolio turnover rate including 167% Portfolio turnover rate excluding mortgage dollar roll transactions 37%
Holdings [Text Block]	Portfolio holdings by asset type *Includes derivatives.
Capital World Bond Fund Class 529-F-1 - CCWFX
Shareholder Report [Line Items]
Fund Name	Capital World Bond Fund®
Class Name	Class 529-F-1
Trading Symbol	CCWFX
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about Capital World Bond Fund for the period from January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	semi-annual shareholder report
Additional Information [Text Block]	You can find additional information about the fund at capitalgroup.com/mutual-fund-literature-529F1
Additional Information Phone Number	(800) 421-4225
Additional Information Website	capitalgroup.com/mutual-fund-literature-529F1
Expenses [Text Block]	What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class $41 0.84%* *Annualized
Expenses Paid, Amount	$ 41
Expense Ratio, Percent	0.84%	[1]
Net Assets	$ 9,955,000,000
Holdings Count | Holdings	2,074
Investment Company, Portfolio Turnover	167%
Additional Fund Statistics [Text Block]	Key fund statistics Fund net assets (in millions $9,955 Total number of portfolio holdings 2,074 Portfolio turnover rate including 167% Portfolio turnover rate excluding mortgage dollar roll transactions 37%
Holdings [Text Block]	Portfolio holdings by asset type *Includes derivatives.
Capital World Bond Fund Class 529-T - TWCBX
Shareholder Report [Line Items]
Fund Name	Capital World Bond Fund®
Class Name	Class 529-T
Trading Symbol	TWCBX
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about Capital World Bond Fund for the period from January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	semi-annual shareholder report
Additional Information [Text Block]	You can find additional information about the fund at capitalgroup.com/mutual-fund-literature
Additional Information Phone Number	(800) 421-4225
Additional Information Website	capitalgroup.com/mutual-fund-literature
Expenses [Text Block]	What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 529-T $39 0.79%* *Annualized
Expenses Paid, Amount	$ 39
Expense Ratio, Percent	0.79%	[1]
Net Assets	$ 9,955,000,000
Holdings Count | Holdings	2,074
Investment Company, Portfolio Turnover	167%
Additional Fund Statistics [Text Block]	Key fund statistics Fund net assets (in millions $9,955 Total number of portfolio holdings 2,074 Portfolio turnover rate including 167% Portfolio turnover rate excluding mortgage dollar roll transactions 37%
Holdings [Text Block]	Portfolio holdings by asset type *Includes derivatives.
Capital World Bond Fund Class 529-E - CCWEX
Shareholder Report [Line Items]
Fund Name	Capital World Bond Fund®
Class Name	Class 529-E
Trading Symbol	CCWEX
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about Capital World Bond Fund for the period from January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	semi-annual shareholder report
Additional Information [Text Block]	You can find additional information about the fund at capitalgroup.com/mutual-fund-literature-529E
Additional Information Phone Number	(800) 421-4225
Additional Information Website	capitalgroup.com/mutual-fund-literature-529E
Expenses [Text Block]	What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 529-E $56 1.14%* * Annualized
Expenses Paid, Amount	$ 56
Expense Ratio, Percent	1.14%	[1]
Net Assets	$ 9,955,000,000
Holdings Count | Holdings	2,074
Investment Company, Portfolio Turnover	167%
Additional Fund Statistics [Text Block]	Key fund statistics Fund net assets (in millions $9,955 Total number of portfolio holdings 2,074 Portfolio turnover rate including 167% Portfolio turnover rate excluding mortgage dollar roll transactions 37%
Holdings [Text Block]	Portfolio holdings by asset type *Includes derivatives.
Capital World Bond Fund Class 529-C - CCWCX
Shareholder Report [Line Items]
Fund Name	Capital World Bond Fund®
Class Name	Class 529-C
Trading Symbol	CCWCX
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about Capital World Bond Fund for the period from January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	semi-annual shareholder report
Additional Information [Text Block]	You can find additional information about the fund at capitalgroup.com/mutual-fund-literature-529C
Additional Information Phone Number	(800) 421-4225
Additional Information Website	capitalgroup.com/mutual-fund-literature-529C
Expenses [Text Block]	What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 529-C $85 1.75%* *Annualized
Expenses Paid, Amount	$ 85
Expense Ratio, Percent	1.75%	[1]
Net Assets	$ 9,955,000,000
Holdings Count | Holdings	2,074
Investment Company, Portfolio Turnover	167%
Additional Fund Statistics [Text Block]	Key fund statistics Fund net assets (in millions $9,955 Total number of portfolio holdings 2,074 Portfolio turnover rate including 167% Portfolio turnover rate excluding mortgage dollar roll transactions 37%
Holdings [Text Block]	Portfolio holdings by asset type *Includes derivatives.
Capital World Bond Fund Class 529-A - CCWAX
Shareholder Report [Line Items]
Fund Name	Capital World Bond Fund®
Class Name	Class 529-A
Trading Symbol	CCWAX
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about Capital World Bond Fund for the period from January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	semi-annual shareholder report
Additional Information [Text Block]	You can find additional information about the fund at capitalgroup.com/mutual-fund-literature-529A
Additional Information Phone Number	(800) 421-4225
Additional Information Website	capitalgroup.com/mutual-fund-literature-529A
Expenses [Text Block]	What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 529-A $49 1.01%* *Annualized
Expenses Paid, Amount	$ 49
Expense Ratio, Percent	1.01%
Net Assets	$ 9,955,000,000
Holdings Count | Holdings	2,074
Investment Company, Portfolio Turnover	167%
Additional Fund Statistics [Text Block]	Key fund statistics Fund net assets (in millions) $9,955 Total number of portfolio holdings 2,074 Portfolio turnover rate including 167% Portfolio turnover rate excluding mortgage dollar 37%
Holdings [Text Block]	Portfolio holdings by asset type *Includes derivatives.
Capital World Bond Fund Class F-3 - WFBFX
Shareholder Report [Line Items]
Fund Name	Capital World Bond Fund®
Class Name	Class F-3
Trading Symbol	WFBFX
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about Capital World Bond Fund for the period from January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	semi-annual shareholder report
Additional Information [Text Block]	You can find additional information about the fund at capitalgroup.com/mutual-fund-literature-F3
Additional Information Phone Number	(800) 421-4225
Additional Information Website	capitalgroup.com/mutual-fund-literature-F3
Expenses [Text Block]	What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class F-3 $23 0.48%* *Annualized
Expenses Paid, Amount	$ 23
Expense Ratio, Percent	0.48%	[1]
Net Assets	$ 9,955,000,000
Holdings Count | Holdings	2,074
Investment Company, Portfolio Turnover	167%
Additional Fund Statistics [Text Block]	Key fund statistics Fund net assets (in millions $9,955 Total number of portfolio holdings 2,074 Portfolio turnover rate including 167% Portfolio turnover rate excluding mortgage dollar roll transactions 37%
Holdings [Text Block]	Portfolio holdings by asset type *Includes derivatives.
Capital World Bond Fund Class F-2 - BFWFX
Shareholder Report [Line Items]
Fund Name	Capital World Bond Fund®
Class Name	Class F-2
Trading Symbol	BFWFX
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about Capital World Bond Fund for the period from January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	semi-annual shareholder report
Additional Information [Text Block]	You can find additional information about the fund at capitalgroup.com/mutual-fund-literature-F2
Additional Information Phone Number	(800) 421-4225
Additional Information Website	capitalgroup.com/mutual-fund-literature-F2
Expenses [Text Block]	What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class F-2 $29 0.60%* *Annualized
Expenses Paid, Amount	$ 29
Expense Ratio, Percent	0.60%	[1]
Net Assets	$ 9,955,000,000
Holdings Count | Holdings	2,074
Investment Company, Portfolio Turnover	167%
Additional Fund Statistics [Text Block]	Key fund statistics Fund net assets (in millions $9,955 Total number of portfolio holdings 2,074 Portfolio turnover rate including transactions 167% Portfolio turnover rate excluding mortgage dollar roll transactions 37%
Holdings [Text Block]	Portfolio holdings by asset type *Includes derivatives.
Capital World Bond Fund Class F-1 - WBFFX
Shareholder Report [Line Items]
Fund Name	Capital World Bond Fund®
Class Name	Class F-1
Trading Symbol	WBFFX
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about Capital World Bond Fund for the period from January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	semi-annual shareholder report
Additional Information [Text Block]	You can find additional information about the fund at capitalgroup.com/mutual-fund-literature-F1
Additional Information Phone Number	(800) 421-4225
Additional Information Website	capitalgroup.com/mutual-fund-literature-F1
Expenses [Text Block]	What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class F-1 $51 1.04%* *Annualized
Expenses Paid, Amount	$ 51
Expense Ratio, Percent	1.04%	[1]
Net Assets	$ 9,955,000,000
Holdings Count | Holdings	2,074
Investment Company, Portfolio Turnover	167%
Additional Fund Statistics [Text Block]	Key fund statistics Fund net assets (in millions $9,955 Total number of portfolio holdings 2,074 Portfolio turnover rate including 167% Portfolio turnover rate excluding mortgage dollar roll transactions 37%
Holdings [Text Block]	Portfolio holdings by asset type *Includes derivatives.
Capital World Bond Fund Class T - TWCWX
Shareholder Report [Line Items]
Fund Name	Capital World Bond Fund®
Class Name	Class T
Trading Symbol	TWCWX
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about Capital World Bond Fund for the period from January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	semi-annual shareholder report
Additional Information [Text Block]	You can find additional information about the fund at capitalgroup.com/mutual-fund-literature
Additional Information Phone Number	(800) 421-4225
Additional Information Website	capitalgroup.com/mutual-fund-literature
Expenses [Text Block]	What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class T $36 0.73%* *Annualized
Expenses Paid, Amount	$ 36
Expense Ratio, Percent	0.73%	[1]
Net Assets	$ 9,955,000,000
Holdings Count | Holdings	2,074
Investment Company, Portfolio Turnover	167%
Additional Fund Statistics [Text Block]	Key fund statistics Fund net assets millions $9,955 Total number of portfolio holdings 2,074 Portfolio turnover rate including 167% Portfolio turnover rate excluding mortgage dollar roll transactions 37%
Holdings [Text Block]	Portfolio holdings by asset type *Includes derivatives.
Capital World Bond Fund Class C - CWBCX
Shareholder Report [Line Items]
Fund Name	Capital World Bond Fund®
Class Name	Class C
Trading Symbol	CWBCX
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about Capital World Bond Fund for the period from January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	semi-annual shareholder report
Additional Information [Text Block]	You can find additional information about the fund at capitalgroup.com/mutual-fund-literature-C
Additional Information Phone Number	(800) 421-4225
Additional Information Website	capitalgroup.com/mutual-fund-literature-C
Expenses [Text Block]	What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class $83 1.71%* *Annualized
Expenses Paid, Amount	$ 83
Expense Ratio, Percent	1.71%	[1]
Net Assets	$ 9,955,000,000
Holdings Count | Holdings	2,074
Investment Company, Portfolio Turnover	167%
Additional Fund Statistics [Text Block]	Key fund statistics Fund net assets (in millions) $9,955 Total number of portfolio holdings 2,074 Portfolio turnover rate including 167% Portfolio turnover rate excluding mortgage dollar roll transactions 37%
Holdings [Text Block]	Portfolio holdings by asset type *Includes derivatives.
Capital World Bond Fund Class A - CWBFX
Shareholder Report [Line Items]
Fund Name	Capital World Bond Fund®
Class Name	Class A
Trading Symbol	CWBFX
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about Capital World Bond Fund for the period from January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	semi-annual shareholder report
Additional Information [Text Block]	You can find additional information about the fund at capitalgroup.com/mutual-fund-literature-A
Additional Information Phone Number	(800) 421-4225
Additional Information Website	capitalgroup.com/mutual-fund-literature-A
Expenses [Text Block]	What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class A $48 0.99%* *Annualized
Expenses Paid, Amount	$ 48
Expense Ratio, Percent	0.99%	[1]
Net Assets	$ 9,955,000,000
Holdings Count | Holdings	2,074
Investment Company, Portfolio Turnover	167%
Additional Fund Statistics [Text Block]	Key fund statistics Fund net assets (in millions) $9,955 Total number of portfolio holdings 2,074 Portfolio turnover rate including 167% Portfolio turnover rate excluding 37
Holdings [Text Block]	Portfolio holdings by asset type *Includes derivatives.
[1]Annualized

Shareholder Report, Holdings (D

Shareholder Report, Holdings (Details)	Jun. 30, 2024
Capital World Bond Fund Class R-6 - RCWGX | Bonds & notes of governments & government agencies outside the U.S. [Member]
Holdings [Line Items]
Percent of Net Asset Value	37.83%
Capital World Bond Fund Class R-6 - RCWGX | Corporate bonds, notes & loans [Member]
Holdings [Line Items]
Percent of Net Asset Value	24.92%
Capital World Bond Fund Class R-6 - RCWGX | Mortgage-backed obligations [Member]
Holdings [Line Items]
Percent of Net Asset Value	20.08%
Capital World Bond Fund Class R-6 - RCWGX | U.S. Treasury bonds & notes [Member]
Holdings [Line Items]
Percent of Net Asset Value	7.31%
Capital World Bond Fund Class R-6 - RCWGX | Asset-backed obligations [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.74%
Capital World Bond Fund Class R-6 - RCWGX | Federal agency bonds & notes [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.21%
Capital World Bond Fund Class R-6 - RCWGX | Supranational debt [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.16%
Capital World Bond Fund Class R-6 - RCWGX | Municipals [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.03%
Capital World Bond Fund Class R-6 - RCWGX | Other securities [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.05%
Capital World Bond Fund Class R-6 - RCWGX | Options purchased [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.07%
Capital World Bond Fund Class R-6 - RCWGX | Short-term securities & other assets less liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	8.60%	[1]
Capital World Bond Fund Class R-5 - RCWFX | Bonds & notes of governments & government agencies outside the U.S. [Member]
Holdings [Line Items]
Percent of Net Asset Value	37.83%
Capital World Bond Fund Class R-5 - RCWFX | Corporate bonds, notes & loans [Member]
Holdings [Line Items]
Percent of Net Asset Value	24.92%
Capital World Bond Fund Class R-5 - RCWFX | Mortgage-backed obligations [Member]
Holdings [Line Items]
Percent of Net Asset Value	20.08%
Capital World Bond Fund Class R-5 - RCWFX | U.S. Treasury bonds & notes [Member]
Holdings [Line Items]
Percent of Net Asset Value	7.31%
Capital World Bond Fund Class R-5 - RCWFX | Asset-backed obligations [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.74%
Capital World Bond Fund Class R-5 - RCWFX | Federal agency bonds & notes [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.21%
Capital World Bond Fund Class R-5 - RCWFX | Supranational debt [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.16%
Capital World Bond Fund Class R-5 - RCWFX | Municipals [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.03%
Capital World Bond Fund Class R-5 - RCWFX | Other securities [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.05%
Capital World Bond Fund Class R-5 - RCWFX | Options purchased [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.07%
Capital World Bond Fund Class R-5 - RCWFX | Short-term securities & other assets less liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	8.60%	[1]
Capital World Bond Fund Class R-5E - RCWHX | Bonds & notes of governments & government agencies outside the U.S. [Member]
Holdings [Line Items]
Percent of Net Asset Value	37.83%
Capital World Bond Fund Class R-5E - RCWHX | Corporate bonds, notes & loans [Member]
Holdings [Line Items]
Percent of Net Asset Value	24.92%
Capital World Bond Fund Class R-5E - RCWHX | Mortgage-backed obligations [Member]
Holdings [Line Items]
Percent of Net Asset Value	20.08%
Capital World Bond Fund Class R-5E - RCWHX | U.S. Treasury bonds & notes [Member]
Holdings [Line Items]
Percent of Net Asset Value	7.31%
Capital World Bond Fund Class R-5E - RCWHX | Asset-backed obligations [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.74%
Capital World Bond Fund Class R-5E - RCWHX | Federal agency bonds & notes [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.21%
Capital World Bond Fund Class R-5E - RCWHX | Supranational debt [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.16%
Capital World Bond Fund Class R-5E - RCWHX | Municipals [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.03%
Capital World Bond Fund Class R-5E - RCWHX | Other securities [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.05%
Capital World Bond Fund Class R-5E - RCWHX | Options purchased [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.07%
Capital World Bond Fund Class R-5E - RCWHX | Short-term securities & other assets less liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	8.60%	[1]
Capital World Bond Fund Class R-4 - RCWEX | Bonds & notes of governments & government agencies outside the U.S. [Member]
Holdings [Line Items]
Percent of Net Asset Value	37.83%
Capital World Bond Fund Class R-4 - RCWEX | Corporate bonds, notes & loans [Member]
Holdings [Line Items]
Percent of Net Asset Value	24.92%
Capital World Bond Fund Class R-4 - RCWEX | Mortgage-backed obligations [Member]
Holdings [Line Items]
Percent of Net Asset Value	20.08%
Capital World Bond Fund Class R-4 - RCWEX | U.S. Treasury bonds & notes [Member]
Holdings [Line Items]
Percent of Net Asset Value	7.31%
Capital World Bond Fund Class R-4 - RCWEX | Asset-backed obligations [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.74%
Capital World Bond Fund Class R-4 - RCWEX | Federal agency bonds & notes [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.21%
Capital World Bond Fund Class R-4 - RCWEX | Supranational debt [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.16%
Capital World Bond Fund Class R-4 - RCWEX | Municipals [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.03%
Capital World Bond Fund Class R-4 - RCWEX | Other securities [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.05%
Capital World Bond Fund Class R-4 - RCWEX | Options purchased [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.07%
Capital World Bond Fund Class R-4 - RCWEX | Short-term securities & other assets less liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	8.60%	[1]
Capital World Bond Fund Class R-3 - RCWCX | Bonds & notes of governments & government agencies outside the U.S. [Member]
Holdings [Line Items]
Percent of Net Asset Value	37.83%
Capital World Bond Fund Class R-3 - RCWCX | Corporate bonds, notes & loans [Member]
Holdings [Line Items]
Percent of Net Asset Value	24.92%
Capital World Bond Fund Class R-3 - RCWCX | Mortgage-backed obligations [Member]
Holdings [Line Items]
Percent of Net Asset Value	20.08%
Capital World Bond Fund Class R-3 - RCWCX | U.S. Treasury bonds & notes [Member]
Holdings [Line Items]
Percent of Net Asset Value	7.31%
Capital World Bond Fund Class R-3 - RCWCX | Asset-backed obligations [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.74%
Capital World Bond Fund Class R-3 - RCWCX | Federal agency bonds & notes [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.21%
Capital World Bond Fund Class R-3 - RCWCX | Supranational debt [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.16%
Capital World Bond Fund Class R-3 - RCWCX | Municipals [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.03%
Capital World Bond Fund Class R-3 - RCWCX | Other securities [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.05%
Capital World Bond Fund Class R-3 - RCWCX | Options purchased [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.07%
Capital World Bond Fund Class R-3 - RCWCX | Short-term securities & other assets less liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	8.60%	[1]
Capital World Bond Fund Class R-2E - RCEBX | Bonds & notes of governments & government agencies outside the U.S. [Member]
Holdings [Line Items]
Percent of Net Asset Value	37.83%
Capital World Bond Fund Class R-2E - RCEBX | Corporate bonds, notes & loans [Member]
Holdings [Line Items]
Percent of Net Asset Value	24.92%
Capital World Bond Fund Class R-2E - RCEBX | Mortgage-backed obligations [Member]
Holdings [Line Items]
Percent of Net Asset Value	20.08%
Capital World Bond Fund Class R-2E - RCEBX | U.S. Treasury bonds & notes [Member]
Holdings [Line Items]
Percent of Net Asset Value	7.31%
Capital World Bond Fund Class R-2E - RCEBX | Asset-backed obligations [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.74%
Capital World Bond Fund Class R-2E - RCEBX | Federal agency bonds & notes [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.21%
Capital World Bond Fund Class R-2E - RCEBX | Supranational debt [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.16%
Capital World Bond Fund Class R-2E - RCEBX | Municipals [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.03%
Capital World Bond Fund Class R-2E - RCEBX | Other securities [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.05%
Capital World Bond Fund Class R-2E - RCEBX | Options purchased [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.07%
Capital World Bond Fund Class R-2E - RCEBX | Short-term securities & other assets less liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	8.60%	[1]
Capital World Bond Fund Class R-2 - RCWBX | Bonds & notes of governments & government agencies outside the U.S. [Member]
Holdings [Line Items]
Percent of Net Asset Value	37.83%
Capital World Bond Fund Class R-2 - RCWBX | Corporate bonds, notes & loans [Member]
Holdings [Line Items]
Percent of Net Asset Value	24.92%
Capital World Bond Fund Class R-2 - RCWBX | Mortgage-backed obligations [Member]
Holdings [Line Items]
Percent of Net Asset Value	20.08%
Capital World Bond Fund Class R-2 - RCWBX | U.S. Treasury bonds & notes [Member]
Holdings [Line Items]
Percent of Net Asset Value	7.31%
Capital World Bond Fund Class R-2 - RCWBX | Asset-backed obligations [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.74%
Capital World Bond Fund Class R-2 - RCWBX | Federal agency bonds & notes [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.21%
Capital World Bond Fund Class R-2 - RCWBX | Supranational debt [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.16%
Capital World Bond Fund Class R-2 - RCWBX | Municipals [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.03%
Capital World Bond Fund Class R-2 - RCWBX | Other securities [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.05%
Capital World Bond Fund Class R-2 - RCWBX | Options purchased [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.07%
Capital World Bond Fund Class R-2 - RCWBX | Short-term securities & other assets less liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	8.60%	[1]
Capital World Bond Fund Class R-1 - RCWAX | Bonds & notes of governments & government agencies outside the U.S. [Member]
Holdings [Line Items]
Percent of Net Asset Value	37.83%
Capital World Bond Fund Class R-1 - RCWAX | Corporate bonds, notes & loans [Member]
Holdings [Line Items]
Percent of Net Asset Value	24.92%
Capital World Bond Fund Class R-1 - RCWAX | Mortgage-backed obligations [Member]
Holdings [Line Items]
Percent of Net Asset Value	20.08%
Capital World Bond Fund Class R-1 - RCWAX | U.S. Treasury bonds & notes [Member]
Holdings [Line Items]
Percent of Net Asset Value	7.31%
Capital World Bond Fund Class R-1 - RCWAX | Asset-backed obligations [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.74%
Capital World Bond Fund Class R-1 - RCWAX | Federal agency bonds & notes [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.21%
Capital World Bond Fund Class R-1 - RCWAX | Supranational debt [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.16%
Capital World Bond Fund Class R-1 - RCWAX | Municipals [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.03%
Capital World Bond Fund Class R-1 - RCWAX | Other securities [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.05%
Capital World Bond Fund Class R-1 - RCWAX | Options purchased [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.07%
Capital World Bond Fund Class R-1 - RCWAX | Short-term securities & other assets less liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	8.60%	[1]
Capital World Bond Fund Class 529-F-3 - FWBCX | Bonds & notes of governments & government agencies outside the U.S. [Member]
Holdings [Line Items]
Percent of Net Asset Value	37.83%
Capital World Bond Fund Class 529-F-3 - FWBCX | Corporate bonds, notes & loans [Member]
Holdings [Line Items]
Percent of Net Asset Value	24.92%
Capital World Bond Fund Class 529-F-3 - FWBCX | Mortgage-backed obligations [Member]
Holdings [Line Items]
Percent of Net Asset Value	20.08%
Capital World Bond Fund Class 529-F-3 - FWBCX | U.S. Treasury bonds & notes [Member]
Holdings [Line Items]
Percent of Net Asset Value	7.31%
Capital World Bond Fund Class 529-F-3 - FWBCX | Asset-backed obligations [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.74%
Capital World Bond Fund Class 529-F-3 - FWBCX | Federal agency bonds & notes [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.21%
Capital World Bond Fund Class 529-F-3 - FWBCX | Supranational debt [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.16%
Capital World Bond Fund Class 529-F-3 - FWBCX | Municipals [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.03%
Capital World Bond Fund Class 529-F-3 - FWBCX | Other securities [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.05%
Capital World Bond Fund Class 529-F-3 - FWBCX | Options purchased [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.07%
Capital World Bond Fund Class 529-F-3 - FWBCX | Short-term securities & other assets less liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	8.60%	[1]
Capital World Bond Fund Class 529-F-2 - FCWBX | Bonds & notes of governments & government agencies outside the U.S. [Member]
Holdings [Line Items]
Percent of Net Asset Value	37.83%
Capital World Bond Fund Class 529-F-2 - FCWBX | Corporate bonds, notes & loans [Member]
Holdings [Line Items]
Percent of Net Asset Value	24.92%
Capital World Bond Fund Class 529-F-2 - FCWBX | Mortgage-backed obligations [Member]
Holdings [Line Items]
Percent of Net Asset Value	20.08%
Capital World Bond Fund Class 529-F-2 - FCWBX | U.S. Treasury bonds & notes [Member]
Holdings [Line Items]
Percent of Net Asset Value	7.31%
Capital World Bond Fund Class 529-F-2 - FCWBX | Asset-backed obligations [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.74%
Capital World Bond Fund Class 529-F-2 - FCWBX | Federal agency bonds & notes [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.21%
Capital World Bond Fund Class 529-F-2 - FCWBX | Supranational debt [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.16%
Capital World Bond Fund Class 529-F-2 - FCWBX | Municipals [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.03%
Capital World Bond Fund Class 529-F-2 - FCWBX | Other securities [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.05%
Capital World Bond Fund Class 529-F-2 - FCWBX | Options purchased [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.07%
Capital World Bond Fund Class 529-F-2 - FCWBX | Short-term securities & other assets less liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	8.60%	[1]
Capital World Bond Fund Class 529-F-1 - CCWFX | Bonds & notes of governments & government agencies outside the U.S. [Member]
Holdings [Line Items]
Percent of Net Asset Value	37.83%
Capital World Bond Fund Class 529-F-1 - CCWFX | Corporate bonds, notes & loans [Member]
Holdings [Line Items]
Percent of Net Asset Value	24.92%
Capital World Bond Fund Class 529-F-1 - CCWFX | Mortgage-backed obligations [Member]
Holdings [Line Items]
Percent of Net Asset Value	20.08%
Capital World Bond Fund Class 529-F-1 - CCWFX | U.S. Treasury bonds & notes [Member]
Holdings [Line Items]
Percent of Net Asset Value	7.31%
Capital World Bond Fund Class 529-F-1 - CCWFX | Asset-backed obligations [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.74%
Capital World Bond Fund Class 529-F-1 - CCWFX | Federal agency bonds & notes [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.21%
Capital World Bond Fund Class 529-F-1 - CCWFX | Supranational debt [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.16%
Capital World Bond Fund Class 529-F-1 - CCWFX | Municipals [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.03%
Capital World Bond Fund Class 529-F-1 - CCWFX | Other securities [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.05%
Capital World Bond Fund Class 529-F-1 - CCWFX | Options purchased [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.07%
Capital World Bond Fund Class 529-F-1 - CCWFX | Short-term securities & other assets less liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	8.60%	[1]
Capital World Bond Fund Class 529-T - TWCBX | Bonds & notes of governments & government agencies outside the U.S. [Member]
Holdings [Line Items]
Percent of Net Asset Value	37.83%
Capital World Bond Fund Class 529-T - TWCBX | Corporate bonds, notes & loans [Member]
Holdings [Line Items]
Percent of Net Asset Value	24.92%
Capital World Bond Fund Class 529-T - TWCBX | Mortgage-backed obligations [Member]
Holdings [Line Items]
Percent of Net Asset Value	20.08%
Capital World Bond Fund Class 529-T - TWCBX | U.S. Treasury bonds & notes [Member]
Holdings [Line Items]
Percent of Net Asset Value	7.31%
Capital World Bond Fund Class 529-T - TWCBX | Asset-backed obligations [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.74%
Capital World Bond Fund Class 529-T - TWCBX | Federal agency bonds & notes [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.21%
Capital World Bond Fund Class 529-T - TWCBX | Supranational debt [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.16%
Capital World Bond Fund Class 529-T - TWCBX | Municipals [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.03%
Capital World Bond Fund Class 529-T - TWCBX | Other securities [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.05%
Capital World Bond Fund Class 529-T - TWCBX | Options purchased [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.07%
Capital World Bond Fund Class 529-T - TWCBX | Short-term securities & other assets less liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	8.60%	[1]
Capital World Bond Fund Class 529-E - CCWEX | Bonds & notes of governments & government agencies outside the U.S. [Member]
Holdings [Line Items]
Percent of Net Asset Value	37.83%
Capital World Bond Fund Class 529-E - CCWEX | Corporate bonds, notes & loans [Member]
Holdings [Line Items]
Percent of Net Asset Value	24.92%
Capital World Bond Fund Class 529-E - CCWEX | Mortgage-backed obligations [Member]
Holdings [Line Items]
Percent of Net Asset Value	20.08%
Capital World Bond Fund Class 529-E - CCWEX | U.S. Treasury bonds & notes [Member]
Holdings [Line Items]
Percent of Net Asset Value	7.31%
Capital World Bond Fund Class 529-E - CCWEX | Asset-backed obligations [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.74%
Capital World Bond Fund Class 529-E - CCWEX | Federal agency bonds & notes [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.21%
Capital World Bond Fund Class 529-E - CCWEX | Supranational debt [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.16%
Capital World Bond Fund Class 529-E - CCWEX | Municipals [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.03%
Capital World Bond Fund Class 529-E - CCWEX | Other securities [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.05%
Capital World Bond Fund Class 529-E - CCWEX | Options purchased [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.07%
Capital World Bond Fund Class 529-E - CCWEX | Short-term securities & other assets less liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	8.60%	[1]
Capital World Bond Fund Class 529-C - CCWCX | Bonds & notes of governments & government agencies outside the U.S. [Member]
Holdings [Line Items]
Percent of Net Asset Value	37.83%
Capital World Bond Fund Class 529-C - CCWCX | Corporate bonds, notes & loans [Member]
Holdings [Line Items]
Percent of Net Asset Value	24.92%
Capital World Bond Fund Class 529-C - CCWCX | Mortgage-backed obligations [Member]
Holdings [Line Items]
Percent of Net Asset Value	20.08%
Capital World Bond Fund Class 529-C - CCWCX | U.S. Treasury bonds & notes [Member]
Holdings [Line Items]
Percent of Net Asset Value	7.31%
Capital World Bond Fund Class 529-C - CCWCX | Asset-backed obligations [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.74%
Capital World Bond Fund Class 529-C - CCWCX | Federal agency bonds & notes [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.21%
Capital World Bond Fund Class 529-C - CCWCX | Supranational debt [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.16%
Capital World Bond Fund Class 529-C - CCWCX | Municipals [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.03%
Capital World Bond Fund Class 529-C - CCWCX | Other securities [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.05%
Capital World Bond Fund Class 529-C - CCWCX | Options purchased [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.07%
Capital World Bond Fund Class 529-C - CCWCX | Short-term securities & other assets less liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	8.60%	[1]
Capital World Bond Fund Class 529-A - CCWAX | Bonds & notes of governments & government agencies outside the U.S. [Member]
Holdings [Line Items]
Percent of Net Asset Value	37.83%
Capital World Bond Fund Class 529-A - CCWAX | Corporate bonds, notes & loans [Member]
Holdings [Line Items]
Percent of Net Asset Value	24.92%
Capital World Bond Fund Class 529-A - CCWAX | Mortgage-backed obligations [Member]
Holdings [Line Items]
Percent of Net Asset Value	20.08%
Capital World Bond Fund Class 529-A - CCWAX | U.S. Treasury bonds & notes [Member]
Holdings [Line Items]
Percent of Net Asset Value	7.31%
Capital World Bond Fund Class 529-A - CCWAX | Asset-backed obligations [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.74%
Capital World Bond Fund Class 529-A - CCWAX | Federal agency bonds & notes [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.21%
Capital World Bond Fund Class 529-A - CCWAX | Supranational debt [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.16%
Capital World Bond Fund Class 529-A - CCWAX | Municipals [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.03%
Capital World Bond Fund Class 529-A - CCWAX | Other securities [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.05%
Capital World Bond Fund Class 529-A - CCWAX | Options purchased [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.07%
Capital World Bond Fund Class 529-A - CCWAX | Short-term securities & other assets less liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	8.60%	[1]
Capital World Bond Fund Class F-3 - WFBFX | Bonds & notes of governments & government agencies outside the U.S. [Member]
Holdings [Line Items]
Percent of Net Asset Value	37.83%
Capital World Bond Fund Class F-3 - WFBFX | Corporate bonds, notes & loans [Member]
Holdings [Line Items]
Percent of Net Asset Value	24.92%
Capital World Bond Fund Class F-3 - WFBFX | Mortgage-backed obligations [Member]
Holdings [Line Items]
Percent of Net Asset Value	20.08%
Capital World Bond Fund Class F-3 - WFBFX | U.S. Treasury bonds & notes [Member]
Holdings [Line Items]
Percent of Net Asset Value	7.31%
Capital World Bond Fund Class F-3 - WFBFX | Asset-backed obligations [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.74%
Capital World Bond Fund Class F-3 - WFBFX | Federal agency bonds & notes [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.21%
Capital World Bond Fund Class F-3 - WFBFX | Supranational debt [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.16%
Capital World Bond Fund Class F-3 - WFBFX | Municipals [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.03%
Capital World Bond Fund Class F-3 - WFBFX | Other securities [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.05%
Capital World Bond Fund Class F-3 - WFBFX | Options purchased [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.07%
Capital World Bond Fund Class F-3 - WFBFX | Short-term securities & other assets less liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	8.60%	[1]
Capital World Bond Fund Class F-2 - BFWFX | Bonds & notes of governments & government agencies outside the U.S. [Member]
Holdings [Line Items]
Percent of Net Asset Value	37.83%
Capital World Bond Fund Class F-2 - BFWFX | Corporate bonds, notes & loans [Member]
Holdings [Line Items]
Percent of Net Asset Value	24.92%
Capital World Bond Fund Class F-2 - BFWFX | Mortgage-backed obligations [Member]
Holdings [Line Items]
Percent of Net Asset Value	20.08%
Capital World Bond Fund Class F-2 - BFWFX | U.S. Treasury bonds & notes [Member]
Holdings [Line Items]
Percent of Net Asset Value	7.31%
Capital World Bond Fund Class F-2 - BFWFX | Asset-backed obligations [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.74%
Capital World Bond Fund Class F-2 - BFWFX | Federal agency bonds & notes [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.21%
Capital World Bond Fund Class F-2 - BFWFX | Supranational debt [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.16%
Capital World Bond Fund Class F-2 - BFWFX | Municipals [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.03%
Capital World Bond Fund Class F-2 - BFWFX | Other securities [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.05%
Capital World Bond Fund Class F-2 - BFWFX | Options purchased [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.07%
Capital World Bond Fund Class F-2 - BFWFX | Short-term securities & other assets less liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	8.60%	[1]
Capital World Bond Fund Class F-1 - WBFFX | Bonds & notes of governments & government agencies outside the U.S. [Member]
Holdings [Line Items]
Percent of Net Asset Value	37.83%
Capital World Bond Fund Class F-1 - WBFFX | Corporate bonds, notes & loans [Member]
Holdings [Line Items]
Percent of Net Asset Value	24.92%
Capital World Bond Fund Class F-1 - WBFFX | Mortgage-backed obligations [Member]
Holdings [Line Items]
Percent of Net Asset Value	20.08%
Capital World Bond Fund Class F-1 - WBFFX | U.S. Treasury bonds & notes [Member]
Holdings [Line Items]
Percent of Net Asset Value	7.31%
Capital World Bond Fund Class F-1 - WBFFX | Asset-backed obligations [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.74%
Capital World Bond Fund Class F-1 - WBFFX | Federal agency bonds & notes [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.21%
Capital World Bond Fund Class F-1 - WBFFX | Supranational debt [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.16%
Capital World Bond Fund Class F-1 - WBFFX | Municipals [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.03%
Capital World Bond Fund Class F-1 - WBFFX | Other securities [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.05%
Capital World Bond Fund Class F-1 - WBFFX | Options purchased [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.07%
Capital World Bond Fund Class F-1 - WBFFX | Short-term securities & other assets less liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	8.60%	[1]
Capital World Bond Fund Class T - TWCWX | Bonds & notes of governments & government agencies outside the U.S. [Member]
Holdings [Line Items]
Percent of Net Asset Value	37.83%
Capital World Bond Fund Class T - TWCWX | Corporate bonds, notes & loans [Member]
Holdings [Line Items]
Percent of Net Asset Value	24.92%
Capital World Bond Fund Class T - TWCWX | Mortgage-backed obligations [Member]
Holdings [Line Items]
Percent of Net Asset Value	20.08%
Capital World Bond Fund Class T - TWCWX | U.S. Treasury bonds & notes [Member]
Holdings [Line Items]
Percent of Net Asset Value	7.31%
Capital World Bond Fund Class T - TWCWX | Asset-backed obligations [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.74%
Capital World Bond Fund Class T - TWCWX | Federal agency bonds & notes [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.21%
Capital World Bond Fund Class T - TWCWX | Supranational debt [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.16%
Capital World Bond Fund Class T - TWCWX | Municipals [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.03%
Capital World Bond Fund Class T - TWCWX | Other securities [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.05%
Capital World Bond Fund Class T - TWCWX | Options purchased [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.07%
Capital World Bond Fund Class T - TWCWX | Short-term securities & other assets less liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	8.60%	[1]
Capital World Bond Fund Class C - CWBCX | Bonds & notes of governments & government agencies outside the U.S. [Member]
Holdings [Line Items]
Percent of Net Asset Value	37.83%
Capital World Bond Fund Class C - CWBCX | Corporate bonds, notes & loans [Member]
Holdings [Line Items]
Percent of Net Asset Value	24.92%
Capital World Bond Fund Class C - CWBCX | Mortgage-backed obligations [Member]
Holdings [Line Items]
Percent of Net Asset Value	20.08%
Capital World Bond Fund Class C - CWBCX | U.S. Treasury bonds & notes [Member]
Holdings [Line Items]
Percent of Net Asset Value	7.31%
Capital World Bond Fund Class C - CWBCX | Asset-backed obligations [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.74%
Capital World Bond Fund Class C - CWBCX | Federal agency bonds & notes [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.21%
Capital World Bond Fund Class C - CWBCX | Supranational debt [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.16%
Capital World Bond Fund Class C - CWBCX | Municipals [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.03%
Capital World Bond Fund Class C - CWBCX | Other securities [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.05%
Capital World Bond Fund Class C - CWBCX | Options purchased [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.07%
Capital World Bond Fund Class C - CWBCX | Short-term securities & other assets less liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	8.60%	[1]
Capital World Bond Fund Class A - CWBFX | Bonds & notes of governments & government agencies outside the U.S. [Member]
Holdings [Line Items]
Percent of Net Asset Value	37.83%
Capital World Bond Fund Class A - CWBFX | Corporate bonds, notes & loans [Member]
Holdings [Line Items]
Percent of Net Asset Value	24.92%
Capital World Bond Fund Class A - CWBFX | Mortgage-backed obligations [Member]
Holdings [Line Items]
Percent of Net Asset Value	20.08%
Capital World Bond Fund Class A - CWBFX | U.S. Treasury bonds & notes [Member]
Holdings [Line Items]
Percent of Net Asset Value	7.31%
Capital World Bond Fund Class A - CWBFX | Asset-backed obligations [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.74%
Capital World Bond Fund Class A - CWBFX | Federal agency bonds & notes [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.21%
Capital World Bond Fund Class A - CWBFX | Supranational debt [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.16%
Capital World Bond Fund Class A - CWBFX | Municipals [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.03%
Capital World Bond Fund Class A - CWBFX | Other securities [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.05%
Capital World Bond Fund Class A - CWBFX | Options purchased [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.07%
Capital World Bond Fund Class A - CWBFX | Short-term securities & other assets less liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	8.60%	[1]
[1]Includes derivatives.