Securitized Debt - Callable Debt (Details) - Securitized Loans $ in Thousands	Sep. 30, 2024 USD ($)
Debt Instrument, Redemption [Line Items]
Currently callable	$ 2,952,845
2024	0
2025	2,410,761
2026	531,530
2027	817,892
2028	592,457
Total	$ 7,305,485

- Definition

The principal amount of securitized debt collateralized by loans held for investment callable at the option of the Company.

+ References

No definition available.

+ Details

Name:	cim_SecuritizedDebtLoansHeldForInvestmentPrincipalCallable
Namespace Prefix:	cim_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Securitized Debt Loans Held For Investment Principal Callable In Remainder Of Fiscal Year

+ References

No definition available.

+ Details

Name:	cim_SecuritizedDebtLoansHeldForInvestmentPrincipalCallableInRemainderOfFiscalYear
Namespace Prefix:	cim_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Securitized Debt Loans Held For Investment Principal Callable In Year Five

+ References

No definition available.

+ Details

Name:	cim_SecuritizedDebtLoansHeldForInvestmentPrincipalCallableInYearFive
Namespace Prefix:	cim_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Securitized Debt Loans Held For Investment Principal Callable In Year Four

+ References

No definition available.

+ Details

Name:	cim_SecuritizedDebtLoansHeldForInvestmentPrincipalCallableInYearFour
Namespace Prefix:	cim_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The principal amount of securitized debt collateralized by loans held for investment callable in year two following the date of the latest balance sheet presented in the financial statements.

+ References

No definition available.

+ Details

Name:	cim_SecuritizedDebtLoansHeldForInvestmentPrincipalCallableInYearOne
Namespace Prefix:	cim_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Securitized Debt Loans Held for Investment Principal Callable in Year Three

+ References

No definition available.

+ Details

Name:	cim_SecuritizedDebtLoansHeldForInvestmentPrincipalCallableInYearThree
Namespace Prefix:	cim_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The principal amount of securitized debt collateralized by loans held for investment callable in year three following the date of the latest balance sheet presented in the financial statements.

+ References

No definition available.

+ Details

Name:	cim_SecuritizedDebtLoansHeldForInvestmentPrincipalCallableInYearTwo
Namespace Prefix:	cim_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_LongtermDebtTypeAxis=cim_SecuritizedLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: