Derivatives - Narrative (Details) $ in Millions	9 Months Ended
Sep. 30, 2023 USD ($) swap	Dec. 31, 2022 USD ($)
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Number of interest rate swaps entered during the period \| swap	5
Gains (losses) on interest rate swaps expected to be reclassified from AOCI to net earnings over the next 12 months.	$ (27)
Interest rate swaps \| Cash flow hedging \| Designated as hedging instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, notional amount	1,330	$ 1,250
Receivable for collateral posted related to swaps	69	62
New interest rate swaps entered during the period \| Cash flow hedging \| Designated as hedging instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, notional amount	200
Total return swap \| Not designated as hedging instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Receivable for collateral posted related to swaps	$ 5	$ 7

Number Of Interest Rate Swaps Entered During The Period

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- Definition

Receivable for collateral posted related to swaps

+ References

No definition available.

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- Definition

The estimated net amount of existing gains or losses on cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 815
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480870/815-30-50-1

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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

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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
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480434/815-10-50-1B

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1A
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480434/815-10-50-1A

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