v3.26.1
Shareholder Report
 6 Months Ended
Apr. 30, 2026
USD ($)
Holding
Shareholder Report [Line Items]  
Document Type N-CSRS
Amendment Flag false
Registrant Name Capital Group Central Fund Series
Entity Central Index Key 0001757150
Entity Investment Company Type N-1A
Document Period End Date Apr. 30, 2026
Capital Group Central Cash Fund - Class M  
Shareholder Report [Line Items]  
Fund Name Capital Group Central Cash Fund
Class Name Class M
Trading Symbol CMQXX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Capital Group Central Cash Fund (the "fund") for the period from November 1, 2025 to April 30, 2026.
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/CCF-M. You can also request this information by contacting us at (800) 421-4225.
Additional Information Phone Number (800) 421-4225
Additional Information Website capitalgroup.com/CCF-M
Expenses [Text Block]
What were the fund costs for the last six months?
(based on a hypothetical $10,000 investment)
Share class
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class M
$
0
1
0.00
%
2,3
1
Amount less than $1.
2
Amount less than 0.01%
3
Annualized.
Expenses Paid, Amount $ 0 [1]
Expense Ratio, Percent 0.00% [2],[3]
Net Assets $ 119,347,000,000
Holdings Count | Holding 173
Additional Fund Statistics [Text Block]
Key fund statistics
Fund net assets (in millions)
$
119,347
Total number of portfolio holdings173
Holdings [Text Block]
Portfolio holdings by asset type
 (percent of net assets)
Short-term securities:
U.S. Treasury bills47.49
%
Federal agency bills & notes36.63
%
Repurchase agreements10.26
%
Bonds, notes & other debt instruments:
U.S. Treasury bonds & notes5.55
%
Other assets less liabilities0.07
%
Total100.00
%
[1] Amount less than $1.
[2] Amount less than 0.01%
[3] Annualized.