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COMMITMENTS AND CONTINGENT LIABILITIES - Additional Information (Details) $ in Millions, ¥ in Billions | 3 Months Ended
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Sep. 30, 2021 JPY (¥) | Sep. 30, 2021 USD ($) | Mar. 31, 2017 USD ($)
Commitments and Contingencies Disclosure [Line Items] |  |  |
Loss contingency accrual, insurance-related assessment, discount rate |  |  | 4.25%
Loss contingency, discounted amount of insurance-related assessment liability |  |  | $ 62
Loss contingency, undiscounted amount of insurance-related assessment liability |  |  | 94
Loss contingency, insurance-related assessment, discounted amount of premium tax offset |  |  | 48
Loss contingency, insurance-related assessment, undiscounted amount of premium tax offset |  |  | 74
Loss contingency, loss in period |  |  | $ 14
Mainframe and server computer operations and support |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |
Outsourcing agreement, remaining term | 4 years | 4 years |
Outsourcing agreement, aggregate remaining cost | ¥ 29.3 | $ 262 |
Management consulting and technology services company application maintenance and development services |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |
Outsourcing agreement, remaining term | 6 years | 6 years |
Outsourcing agreement, aggregate remaining cost | ¥ 16.9 | $ 151 |
Enterprise software licensing agreement |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |
Outsourcing agreement, remaining term | 3 years | 3 years |
Outsourcing agreement, aggregate remaining cost | ¥ 1.8 | $ 16 |

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- Definition The amount of insurance-related assessment liability that is expected to be recovered through premium tax offset (discounted) based on current laws applied to in-force policies. + References No definition available. + Details
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- Definition The amount of insurance-related assessment liability that is expected to be recovered through premium tax offset (undiscounted) based on current laws applied to in-force policies. + References No definition available. + Details
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- Definition The minimum amount the entity agreed to spend under the long-term purchase commitment. + References No definition available. + Details
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- Definition Period covered by the long-term purchase commitment, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition The rate applied as of the balance sheet date to reduce the undiscounted amount of a guarantee fund and other insurance-related assessments to present value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 405 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6392405&loc=d3e24119-109301 + Details
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- Definition The present value of the liability as of the balance sheet date representing required funding mandated by statute or regulatory authority that is related directly or indirectly to underwriting activities, including pools for self-insurance and excluding premium taxes and income taxes. The funds derived from the assessments generally enable a government guarantor to pay insurance claims in the event that the underwriting insurer is insolvent or otherwise unable to meet its payment obligations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 405 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6392405&loc=d3e24119-109301 + Details
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- Definition The amount of loss pertaining to the specified contingency that was charged against earnings in the period, including the effects of revisions in previously reported estimates. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121557415&loc=d3e14326-108349 + Details
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- Definition The liability as of the balance sheet date representing required funding mandated by statute or regulatory authority that is related directly or indirectly to underwriting activities, including pools for self-insurance and excluding premium taxes and income taxes. The funds derived from the assessments generally enable a government guarantor to pay insurance claims in the event that the underwriting insurer is insolvent or otherwise unable to meet its payment obligations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 405 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6392405&loc=d3e24119-109301 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 405 -SubTopic 30 -Section 15 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=99384745&loc=d3e23169-109297 + Details
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