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INCOME PER COMMON SHARE - Reconciliations of the Numerators and Denominators Used in the Computations of Basic and Diluted Earnings per Common Share (Details) - USD ($) shares in Millions, $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Mar. 31, 2022 | Jun. 30, 2023 | Jun. 30, 2022
Numerator (basic and diluted): |  |  |  |  |
Net income | $ 263 | $ 278 |  | $ 468 | $ 511
Less: Allocation to redeemable noncontrolling interest | 0 | 1 | $ (1) | 0 | 0
Less: Allocation to unvested restricted stock awards | 0 | 1 |  | 0 | 2
Net income attributable to common shareholders | $ 263 | $ 276 |  | $ 468 | $ 509
Denominator: |  |  |  |  |
Basic common shares (based upon weighted average) (in shares) | 225 | 231 |  | 226 | 235
Add: Stock option dilution (in shares) | 1 | 2 |  | 0 | 2
Diluted common shares (in shares) | 226 | 233 |  | 226 | 237

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