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BENEFITS PAYABLE - Activity in Benefits Payable (Details) - USD ($) $ in Millions | 9 Months Ended
--- | ---
Sep. 30, 2022 | Sep. 30, 2021
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward] |  |
Balances, beginning of period | $ 8,289 | $ 8,143
Acquisitions | 0 | 42
Incurred related to: |  |
Current year | 57,512 | 52,529
Prior years | (404) | (768)
Total incurred | 57,108 | 51,761
Paid related to: |  |
Current year | (48,835) | (44,370)
Prior years | (7,325) | (6,818)
Total paid | (56,160) | (51,188)
Balances, end of period | 9,237 | 8,758
Retail |  |
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward] |  |
Balances, beginning of period | 7,675 | 7,428
Acquisitions | 0 | 42
Incurred related to: |  |
Current year | 54,731 | 49,247
Prior years | (379) | (673)
Total incurred | 54,352 | 48,574
Paid related to: |  |
Current year | (46,608) | (41,721)
Prior years | (6,757) | (6,216)
Total paid | (53,365) | (47,937)
Balances, end of period | 8,662 | 8,107
Total IBNR included in benefits payable | 5,200 |
Group and Specialty |  |
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward] |  |
Balances, beginning of period | 614 | 715
Acquisitions | 0 | 0
Incurred related to: |  |
Current year | 3,168 | 3,769
Prior years | (25) | (95)
Total incurred | 3,143 | 3,674
Paid related to: |  |
Current year | (2,614) | (3,136)
Prior years | (568) | (602)
Total paid | (3,182) | (3,738)
Balances, end of period | 575 | $ 651
Total IBNR included in benefits payable | $ 484 |

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- Definition The amount needed to reflect the estimated ultimate cost of settling claims relating to insured events that have occurred on or before the balance sheet date, whether or not reported to the insurer at that date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 3 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=116884095&loc=d3e14764-158437 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 3 -Subparagraph (cc) -URI https://asc.fasb.org/extlink&oid=116884095&loc=d3e14764-158437 + Details
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- Definition Amount of increase (decrease) in the cost of settling unpaid claims after deduction of reinsurance recoveries related to the acquisition of a business. Includes, but is not limited to, claims which have been incurred but not reported. + References No definition available. + Details
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- Definition Estimated costs as of the balance sheet date of settling insured claims and costs incurred in the claims settlement process for claims that have not yet been submitted to the insurance company for reimbursement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 5.W) -URI https://asc.fasb.org/extlink&oid=27015833&loc=d3e570705-122907 + Details
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