XML 60 R49.htm IDEA: XBRL DOCUMENT
v3.22.2

SECURITIES - Summary of Residential Securities and CMBS (Details) $ in Thousands | 6 Months Ended
--- | ---
Jun. 30, 2022 USD ($)
Debt Securities, Available-For-Sale [Roll Forward] |
Beginning balance January 1, 2022 | $ 63,655,674
Purchases | 16,087,634
Sales and transfers | (9,563,655)
Principal paydowns | (5,711,774)
(Amortization) / accretion | 31,235
Fair value adjustment | (5,456,380)
Ending balance June 30, 2022 | 59,042,734
Agency Securities |
Debt Securities, Available-For-Sale [Roll Forward] |
Beginning balance January 1, 2022 | 60,525,605
Purchases | 14,731,945
Sales and transfers | (9,042,404)
Principal paydowns | (5,385,047)
(Amortization) / accretion | 28,799
Fair value adjustment | (5,265,562)
Ending balance June 30, 2022 | 55,593,336
Residential Credit Securities |
Debt Securities, Available-For-Sale [Roll Forward] |
Beginning balance January 1, 2022 | 2,599,564
Purchases | 1,243,293
Sales and transfers | (352,027)
Principal paydowns | (323,281)
(Amortization) / accretion | 2,358
Fair value adjustment | (177,535)
Ending balance June 30, 2022 | 2,992,372
Commercial Securities |
Debt Securities, Available-For-Sale [Roll Forward] |
Beginning balance January 1, 2022 | 530,505
Purchases | 112,396
Sales and transfers | (169,224)
Principal paydowns | (3,446)
(Amortization) / accretion | 78
Fair value adjustment | (13,283)
Ending balance June 30, 2022 | $ 457,026

X
- Definition Accretion (Amortization) Of Debt Securities Available-For-Sale + References No definition available. + Details
Name: | nly_AccretionAmortizationOfDebtSecuritiesAvailableForSale
Namespace Prefix: | nly_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Debt Securities, Available-For-Sale [Roll Forward] + References No definition available. + Details
Name: | nly_DebtSecuritiesAvailableForSaleRollForward
Namespace Prefix: | nly_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Payments to Acquire Debt Securities, Available-for-sale, Excluding Variable Interest Entity + References No definition available. + Details
Name: | nly_PaymentstoAcquireDebtSecuritiesAvailableforsaleExcludingVariableInterestEntity
Namespace Prefix: | nly_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Proceeds from Sale of Debt Securities, Available-for-sale, Excluding Variable Interest Entity + References No definition available. + Details
Name: | nly_ProceedsfromSaleofDebtSecuritiesAvailableforsaleExcludingVariableInterestEntity
Namespace Prefix: | nly_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount excluding accrued interest, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454 + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, after tax and adjustment, of unrealized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale) and unrealized gain (loss) on investment in debt security measured at amortized cost (held-to-maturity) from transfer to available-for-sale. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (f) -URI https://asc.fasb.org/extlink&oid=126968391&loc=SL7669646-108580 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI https://asc.fasb.org/extlink&oid=126968391&loc=d3e637-108580 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (e) -URI https://asc.fasb.org/extlink&oid=126968391&loc=SL7669646-108580 + Details
Name: | us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of cash inflow from sale, maturity, prepayment and call of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 11 -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3151-108585 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3179-108585 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 11 -URI https://asc.fasb.org/extlink&oid=124260329&loc=d3e26853-111562 + Details
Name: | us-gaap_ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_AgencySecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_ResidentialMortgageBackedSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_CommercialMortgageBackedSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |