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Equity - Share-based Payments (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Share-based compensation expense |  |  |  |
Pre-tax compensation expense | $ 9 | $ 7 | $ 23 | $ 22
Income tax benefit | (1) | 0 | (2) | (2)
Total share-based compensation expense, net of income taxes | 8 | 7 | 21 | 20
Stock options |  |  |  |
Share-based compensation expense |  |  |  |
Pre-tax compensation expense | 1 | 1 | 3 | 3
Income tax benefit | 0 | 0 | 0 | 0
Total share-based compensation expense, net of income taxes | 1 | 1 | 3 | 3
Restricted Stock Units ("RSUs") | Employee |  |  |  |
Share-based compensation expense |  |  |  |
Pre-tax compensation expense | 4 | 4 | 11 | 10
Income tax benefit | 0 | 0 | (1) | (1)
Total share-based compensation expense, net of income taxes | 4 | 4 | 10 | 9
Performance shares and other share-based awards |  |  |  |
Share-based compensation expense |  |  |  |
Pre-tax compensation expense | 4 | 2 | 9 | 9
Income tax benefit | (1) | 0 | (1) | (1)
Total share-based compensation expense, net of income taxes | $ 3 | $ 2 | $ 8 | $ 8

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