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N-2
Dec. 31, 2022
shares
Cover [Abstract]  
Entity Central Index Key 0000908187
Amendment Flag false
Document Type N-CSRS
Entity Registrant Name PCM Fund, Inc.
General Description of Registrant [Abstract]  
Investment Objectives and Practices [Text Block]
Investment Objective and Strategy Overview
The Fund’s primary investment objective is to achieve high current income. Capital gain from the disposition of investments is a secondary objective of the Fund.
Fund Insights at NAV
The following affected performance (on a gross basis) during the reporting period:
»   Exposure to holdings related to special situation investments, which include companies undergoing stress, distress, challenges, or significant transition, contributed to absolute performance as the securities posted positive returns.
»   Exposure to high yield credit contributed to absolute performance as the sector posted positive performance.
»   Security selection within structured agency mortgage backed securities contributed to absolute performance as the securities posted positive returns.
»   Exposure to asset-backed securities detracted from absolute performance as the sector posted negative performance.
»   Interest rate positioning, most notably long exposure at the short to intermediate portion of the curve detracted from performance as rates rose.
»   Exposure to re‑performing residential mortgage loans detracted from performance as the securities posted negative returns.
Common Shares [Member]  
Capital Stock, Long-Term Debt, and Other Securities [Abstract]  
Outstanding Security, Title [Text Block] Common Shares
Outstanding Security, Held [Shares] 11,846