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STOCK COMPENSATION - Performance Shares Narrative (Details) $ / shares in Units, shares in Millions, $ in Millions | 1 Months Ended | 12 Months Ended
--- | --- | ---
Feb. 28, 2024 $ / shares shares | Feb. 28, 2023 $ / shares shares | Dec. 31, 2023 USD ($) type $ / shares shares | Dec. 31, 2022 $ / shares shares | Dec. 31, 2021 $ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Shares converted (in shares) |  | 1.8 |  |  |
Shares converted (in dollars per share) | $ / shares |  | $ 67.13 |  |  |
Subsequent Event |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Shares converted (in shares) | 2.3 |  |  |  |
Shares converted (in dollars per share) | $ / shares | $ 66.95 |  |  |  |
Performance Shares |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Vesting period of performance share units issued under performance share plan |  |  | 3 years | 3 years |
Minimum percentage of transfer performance shares to common stock based on actual total shareholder return |  |  | 0.00% |  |
Maximum percentage of transfer performance shares to common stock based on actual total shareholder return |  |  | 200.00% |  |
Number of types of PSUs | type |  |  | 2 |  |
Performance share units, unvested (in shares) |  |  | 2.4 | 2.4 |
Equity instrument, granted (in shares) |  |  | 1.3 |  |
Equity instruments, vested (in shares) |  |  | 1.3 |  |
Unrecognized compensation cost | $ |  |  | $ 32 |  |
Total unrecognized compensation cost related to award, weighted average period |  |  | 19 months |  |
EPS-based and ROE-based Performance Share Units |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Vesting period of performance share units issued under performance share plan |  |  | 3 years |  |
Equity instrument granted in period, weighted average grant date fair value (in dollars per share) | $ / shares |  |  | $ 68.93 | $ 66.87 | $ 59.49

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- Definition Maximum Percentage of transfer performance shares to common stock based on actual Shareholder Return. + References No definition available. + Details
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- Definition The number of shares converted in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482913/230-10-50-4 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482913/230-10-50-3 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482913/230-10-50-5 + Details
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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(01) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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