COMMITMENTS, GUARANTEES AND CONTINGENCIES (Details) beneficiary in Millions, $ in Millions	12 Months Ended
Dec. 31, 2021 USD ($) state beneficiary
Loss Contingencies [Line Items]
Purchase obligations in 2022	$ 656
Purchase obligations in 2023	310
Purchase obligations in 2024	192
Purchase obligations in 2025	97
Purchase obligations in 2026	$ 52
Percentage of risk score calculated from claims submitted through EDS	75.00%
Number of states comprising TRICARE beneficiaries \| state	32
Number of TRICARE beneficiaries \| beneficiary	6,000,000
Medicare
Loss Contingencies [Line Items]
Percentage of premiums and services revenue	82.00%
Medicaid
Loss Contingencies [Line Items]
Percentage of premiums and services revenue	6.00%
Military services
Loss Contingencies [Line Items]
Percentage of premiums and services revenue	1.00%
Tricare East Region Contract
Loss Contingencies [Line Items]
Contract term years	5 years

Contract term, years.

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Number Of States Comprising TRICARE Beneficiaries

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Number Of TRICARE Beneficiaries

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Percentage Of Risk Score Calculated From Claims Submitted Through EDS

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Percentage Of Total Premium And Services Revenues

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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.

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Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 440
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123406679&loc=d3e25336-109308

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Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 440
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123406679&loc=d3e25336-109308

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