Cash Flow Hedges Derivative Instruments Not Designated As Hedging Instruments Average Months To Expiration

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- Definition

The percentage Interest Rate Swaps Linked to Overnight Index Swap Rate in the portfolio.

+ References

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- Definition

The percentage of Interest Rate Swaps Linked to Secured Overnight Financing Rate in the portfolio.

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- Definition

Options At Cost

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-5

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-5

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- Definition

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

+ References

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- Definition

Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition

Nominal or face amount used to calculate payments on the derivative liability.

+ References

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- Definition

Fair value as of the balance sheet date of interest rate derivative assets, net of interest rate derivative liabilities, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized on the balance sheet.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-Name Accounting Standards Codification
-Section 50
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Derivative and Other Hedging Instruments (Summary Of Outstanding Interest Rate Swaps) (Details) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2026 USD ($)	Jun. 30, 2025 USD ($)	Jun. 30, 2026 USD ($) month	Jun. 30, 2025 USD ($)	Dec. 31, 2025 USD ($) month	Dec. 31, 2024
Interest Rate Swaps Linked to Overnight Index Swap Rate	2.00%		2.00%		5.00%
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	$ 487	$ (369)	$ 869	$ (1,380)
Interest Rate Swaps Linked to Secured Overnight Financing Rate	98.00%		98.00%		95.00%
Interest Rate Swaption [Member]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net		(9)		(28)
Interest Rate Swap [Member]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	$ 640	(236)	$ 1,095	(805)
Notional Amount	$ 73,752		$ 73,752		$ 64,632
Average Fixed Pay Rate	2.76%		2.76%		2.57%
Average Receive Rate	3.68%		3.68%		3.86%
Average Maturity (Years)			4 years			4 years 8 months 12 days
Receiver Swaption [Member]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	$ (15)	$ 0	$ (21)	$ 0
Less Than or Equal to One Year [Member] \| Interest Rate Swap [Member]
Notional Amount	$ 6,300		$ 6,300		$ 7,300
Average Fixed Pay Rate	0.21%		0.21%		0.20%
Average Receive Rate	3.68%		3.68%		3.80%
Average Maturity (Years)			4 months 24 days			6 months
Less Than or Equal to One Year [Member] \| Receiver Swaption [Member]
Notional Amount					$ 7,000
Average Fixed Pay Rate					3.04%
Options At Cost					$ 70
Interest Rate Derivatives, at Fair Value, Net					$ 24
Cash Flow Hedges Derivative Instruments Not Designated As Hedging Instruments Average Months To Expiration \| month					9
Average Maturity (Years)					9 years 2 months 12 days
Greater Than One Year and Less Than or Equal to Two Years [Member] \| Receiver Swaption [Member]
Notional Amount	$ 7,750		$ 7,750
Average Fixed Pay Rate	3.24%		3.24%
Options At Cost			$ 71
Interest Rate Derivatives, at Fair Value, Net	$ 31		$ 31
Cash Flow Hedges Derivative Instruments Not Designated As Hedging Instruments Average Months To Expiration \| month			7
Average Maturity (Years)			9 years
Greater Than One Year and Less Than or Equal to Three Years [Member] \| Interest Rate Swap [Member]
Notional Amount	$ 30,771		$ 30,771		$ 20,421
Average Fixed Pay Rate	2.89%		2.89%		2.38%
Average Receive Rate	3.68%		3.68%		3.86%
Average Maturity (Years)			1 year 8 months 12 days			2 years 1 month 6 days
Greater Than Three Years and Less Than or Equal to Five Years [Member] \| Interest Rate Swap [Member]
Notional Amount	$ 9,000		$ 9,000		$ 8,970
Average Fixed Pay Rate	2.18%		2.18%		2.26%
Average Receive Rate	3.68%		3.68%		3.85%
Average Maturity (Years)			4 years			4 years 6 months
Greater Than Five Years and Less than or Equal to Seven Years [Member] \| Interest Rate Swap [Member]
Notional Amount	$ 15,670		$ 15,670		$ 13,980
Average Fixed Pay Rate	3.29%		3.29%		3.43%
Average Receive Rate	3.68%		3.68%		3.87%
Average Maturity (Years)			6 years 4 months 24 days			6 years 9 months 18 days
Greater Than Seven Years and Less than or Equal to Ten Years [Member] \| Interest Rate Swap [Member]
Notional Amount	$ 12,011		$ 12,011		$ 13,961
Average Fixed Pay Rate	3.48%		3.48%		3.43%
Average Receive Rate	3.68%		3.68%		3.87%
Average Maturity (Years)			8 years 4 months 24 days			8 years 7 months 6 days