v3.25.1

Related Party Transactions - Reimbursement of Expenses; Expense Cap, NXDT (Details) $ in Millions	12 Months Ended
	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Related Party Transactions [Abstract]
Maximum fee, percentage of managed assets	1.50%
Advisory agreement, term	3 years
Advisory agreement, additional term	1 year
Termination threshold with cause	30 days
Termination threshold without cause	180 days
Termination threshold, material breach of contract	30 days
Material breach of contract, term	30 days
Fees earned multiplier	3
Termination fee calculation, threshold period	1 year
Administrative fees and advisory fees	$ (13.3)	$ 13.7
Administrative and advisory fees expense waived to comply with cap	$ 0.0	$ 2.0
Maximum expense (as a percent)	1.50%
Deferred expense to comply with cap	$ 3.4
Internalization Fee Percent	7.50%
Debt conversion, converted instrument, amount	$ 50.2

Administrative And Advisory Fees Expense Waived To Comply With Cap

+ References

No definition available.

+ Details

Name:	nxdt_AdministrativeAndAdvisoryFeesExpenseWaivedToComplyWithCap
Namespace Prefix:	nxdt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Administrative Fees and Advisory Fee

+ References

No definition available.

+ Details

Name:	nxdt_AdministrativeFeesAndAdvisoryFee
Namespace Prefix:	nxdt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Advisory Agreement, Additional Term

+ References

No definition available.

+ Details

Name:	nxdt_AdvisoryAgreementAdditionalTerm
Namespace Prefix:	nxdt_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Advisory Agreement, Automatic Termination, Termination Fee, Fees Earned Multiplier

+ References

No definition available.

+ Details

Name:	nxdt_AdvisoryAgreementAutomaticTerminationTerminationFeeFeesEarnedMultiplier
Namespace Prefix:	nxdt_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

- Definition

Advisory Agreement, Material Breach Of Contract, Term

+ References

No definition available.

+ Details

Name:	nxdt_AdvisoryAgreementMaterialBreachOfContractTerm
Namespace Prefix:	nxdt_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Advisory Agreement, Term

+ References

No definition available.

+ Details

Name:	nxdt_AdvisoryAgreementTerm
Namespace Prefix:	nxdt_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Advisory Agreement, Termination Threshold, Material Breach Of Contract

+ References

No definition available.

+ Details

Name:	nxdt_AdvisoryAgreementTerminationThresholdMaterialBreachOfContract
Namespace Prefix:	nxdt_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Advisory Agreement, Termination Threshold With Cause

+ References

No definition available.

+ Details

Name:	nxdt_AdvisoryAgreementTerminationThresholdWithCause
Namespace Prefix:	nxdt_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Advisory Agreement, Termination Threshold Without Cause

+ References

No definition available.

+ Details

Name:	nxdt_AdvisoryAgreementTerminationThresholdWithoutCause
Namespace Prefix:	nxdt_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Deferred Expense To Comply With Cap

+ References

No definition available.

+ Details

Name:	nxdt_DeferredExpenseToComplyWithCap
Namespace Prefix:	nxdt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Internalization Fee Percent

+ References

No definition available.

+ Details

Name:	nxdt_InternalizationFeePercent
Namespace Prefix:	nxdt_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of managed assets for maximum fee.

+ References

No definition available.

+ Details

Name:	nxdt_MaximumFeePercentageOfManagedAssets
Namespace Prefix:	nxdt_
Data Type:	dtr-types1:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Related Party Expense, Maximum Percentage

+ References

No definition available.

+ Details

Name:	nxdt_RelatedPartyExpenseMaximumPercentage
Namespace Prefix:	nxdt_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Termination Fee Calculation, Threshold Period

+ References

No definition available.

+ Details

Name:	nxdt_TerminationFeeCalculationThresholdPeriod
Namespace Prefix:	nxdt_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The value of the financial instrument(s) that the original debt is being converted into in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482913/230-10-50-3

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 5
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482913/230-10-50-5

+ Details

Name:	us-gaap_DebtConversionConvertedInstrumentAmount1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- References

No definition available.

+ Details

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

NEXPOINT DIVERSIFIED REAL ESTATE TRUST 10-K