Net Assets C000209656 [Member] Capital Group Central Cash Fund - Class M Investment Type [Axis] Federal Agency Bills And Notes [Member] Federal agency bills & notes [Member] Other Assets Less Liabilities [Member] Other assets less liabilities [Member] Repurchase Agreements [Member] Repurchase agreements [Member] U.S. Treasury bills [Member] U S Treasury Bonds And Notes [Member] U.S. Treasury bonds & notes [Member]