Debt Instrument, Pariu-Passu, Ratio

No definition available.

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Namespace Prefix:	ari_
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Balance Type:	na
Period Type:	instant

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

+ References

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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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- Definition

The cash inflow from the issuance of a long-term debt instrument which can be exchanged for a specified amount of another security, typically the entity's common stock, at the option of the issuer or the holder.

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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Including the current and noncurrent portions, carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer). Senior note holders are paid off in full before any payments are made to junior note holders.

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Balance Type:	credit
Period Type:	instant

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=ari_TwentyTwentyNineNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Senior Secured Notes, Net (Details)	1 Months Ended	12 Months Ended
Senior Secured Notes, Net (Details)	Jun. 30, 2021 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Derivative [Line Items]
Proceeds from issuance of senior secured notes		$ 0	$ 500,000,000	$ 0
Less: deferred financing costs		$ 27,700,000
Debt instrument, pariu-passu, ratio		1.20
Senior Notes
Derivative [Line Items]
Senior notes		$ 494,844,000	494,051,000
2029 Notes \| Senior Notes
Derivative [Line Items]
Debt instrument, face amount	$ 500,000,000
Coupon Rate	4.625%
Proceeds from issuance of senior secured notes	$ 495,000,000
Senior notes		494,800,000	494,100,000
Less: deferred financing costs		$ 5,200,000	$ 5,900,000