Cost (or upfront payable/receivable) as of the balance sheet date of the derivative or group of derivatives.

No definition available.

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- Definition

The portion of the notional amount of swaptions outstanding as of the balance sheet date with underlying swaps with floating rates tied to the 3-Month London Interbank Offered Rate (LIBOR).

+ References

No definition available.

+ Details

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- Definition

The portion of the notional amount of swaptions outstanding as of the balance sheet date with underlying swaps with floating rates tied to the Secured Overnight Financing Rate (SOFR).

+ References

No definition available.

+ Details

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- Definition

Average fixed interest rate related to the group of interest rate derivatives.

+ References

No definition available.

+ Details

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- Definition

Average remaining period until maturity of the derivative contract, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

Fair value of the assets less the liabilities of a derivative or group of derivatives.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=123594938&loc=d3e13433-108611

+ Details

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- 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.

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- Definition

Nominal or face amount used to calculate payment on derivative.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5580258-113959

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5579245-113959

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- Details

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Derivative Instruments and Hedging Activities Schedule of Interest Rate Swaptions (Details) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021	Mar. 31, 2021	Dec. 31, 2020
Derivative [Line Items]
Notional	$ (18,878,215,000)	$ (17,159,801,000)	$ (19,137,094,000)	$ (23,932,603,000)
Percentage of Underlying Swaps Tied to SOFR	2210.00%
Percentage of Underlying Swaps Tied to LIBOR	7790.00%	10000.00%
Interest Rate Swaption [Member] \| Long [Member] \| Variable Income Interest Rate [Member] \| Less Than Six Months Remaining Maturity [Member]
Derivative [Line Items]
Cost Basis	$ (11,314,000)	$ (11,314,000)
Fair Value	$ (21,175,000)	$ (3,539,000)
Weighted Average Remaining Maturity	2 months 10 days	5 months 10 days
Interest Rate Swaption [Member] \| Short [Member] \| Variable Income Interest Rate [Member] \| Greater than or Equal to Six Months Remaining Maturity
Derivative [Line Items]
Cost Basis	$ (47,963,000)	$ (26,329,000)
Fair Value	$ (63,404,000)	$ (23,958,000)
Weighted Average Remaining Maturity	1 year 3 months 14 days	1 year 5 months 24 days
Interest Rate Swaption [Member] \| Short [Member] \| Fixed Income Interest Rate [Member] \| Less Than Six Months Remaining Maturity [Member]
Derivative [Line Items]
Cost Basis	$ (10,640,000)	$ (10,640,000)
Fair Value	$ (205,000)	$ (6,856,000)
Weighted Average Remaining Maturity	2 months 9 days	5 months 3 days
Interest Rate Swaption [Member] \| Short [Member] \| Fixed Income Interest Rate [Member] \| Greater than or Equal to Six Months Remaining Maturity
Derivative [Line Items]
Cost Basis	$ (47,963,000)	$ (26,329,000)
Fair Value	$ (50,640,000)	$ (24,468,000)
Weighted Average Remaining Maturity	1 year 8 months 11 days	1 year 6 months 28 days
Underlying Swap [Member] \| Long [Member] \| Variable Income Interest Rate [Member] \| Less Than Six Months Remaining Maturity [Member]
Derivative [Line Items]
Weighted Average Remaining Maturity	10 years	10 years
Notional	$ (886,000,000)	$ (886,000,000)
Weighted Average Fixed Interest Rate	2.26%	2.26%
Underlying Swap [Member] \| Short [Member] \| Variable Income Interest Rate [Member] \| Greater than or Equal to Six Months Remaining Maturity
Derivative [Line Items]
Weighted Average Remaining Maturity	10 years	10 years
Notional	$ (1,280,000,000)	$ (780,000,000)
Weighted Average Fixed Interest Rate	1.82%	1.72%
Underlying Swap [Member] \| Short [Member] \| Fixed Income Interest Rate [Member] \| Less Than Six Months Remaining Maturity [Member]
Derivative [Line Items]
Weighted Average Remaining Maturity	10 years	10 years
Notional	$ (1,087,000,000)	$ (1,087,000,000)
Weighted Average Fixed Interest Rate	1.26%	1.26%
Underlying Swap [Member] \| Short [Member] \| Fixed Income Interest Rate [Member] \| Greater than or Equal to Six Months Remaining Maturity
Derivative [Line Items]
Weighted Average Remaining Maturity	10 years	10 years
Notional	$ (1,280,000,000)	$ (780,000,000)
Weighted Average Fixed Interest Rate	1.82%	1.72%