INSURANCE LIABILITIES AND ANNUITY BENEFITS - Undiscounted and Discounted Expected Gross Premiums and Benefit Payments (Details) - USD ($) $ in Millions	Mar. 31, 2024	Mar. 31, 2023
Long-term care
Liability for Future Policy Benefit, by Product Segment [Line Items]
Undiscounted, Gross premiums	$ 7,376	$ 7,924
Undiscounted, Benefit payments	62,774	64,944
Discounted, Gross premiums	4,794	5,105
Discounted, Benefit payments	29,654	30,271
Structured settlement annuities
Liability for Future Policy Benefit, by Product Segment [Line Items]
Undiscounted, Benefit payments	19,092	19,745
Discounted, Benefit payments	8,909	9,349
Life
Liability for Future Policy Benefit, by Product Segment [Line Items]
Undiscounted, Gross premiums	12,082	13,537
Undiscounted, Benefit payments	10,935	11,800
Discounted, Gross premiums	5,446	6,104
Discounted, Benefit payments	$ 5,581	$ 6,025

Liability for Future Policy Benefit, Expected Future Policy Benefit, Discounted, before Reinsurance

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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

Amount, before effect of reinsurance, of discounted balance for expected future gross premium component of liability for future policy benefit.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (b)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480081/944-40-50-6

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- Definition

Amount, before effect of reinsurance, of undiscounted balance for expected future gross premium component of liability for future policy benefit.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 944
-SubTopic 40
-Name Accounting Standards Codification
-Section 55
-Paragraph 29E
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480046/944-40-55-29E

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (b)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480081/944-40-50-6

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- Definition

Amount, before effect of reinsurance, of undiscounted balance for expected future policy benefit and expense component of liability for future policy benefit.

+ References

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