XML 77 R66.htm IDEA: XBRL DOCUMENT
v3.23.2

DERIVATIVE INSTRUMENTS - Narrative (Details) - USD ($) $ in Billions | Jun. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Interest rate swaps, at fair value |  |
Derivative [Line Items] |  |
Variation margin | $ (3.1) | $ (3.2)

X
- Definition Derivative Instruments, Variation Margin on Collateral + References No definition available. + Details
Name: | nly_DerivativeInstrumentsVariationMarginonCollateral
Namespace Prefix: | nly_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- 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 Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480237/815-40-50-5 + Details
Name: | us-gaap_DerivativeLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_InterestRateSwapMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |