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v3.21.1

Equity - Share-based payments (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2021 | Mar. 31, 2020
Share-based compensation expense |  |
Pre-tax compensation expense | $ 5 | $ 6
Income tax benefit |  | (1)
Total share-based compensation expense, net of income taxes | 5 | 5
Stock options |  |
Share-based compensation expense |  |
Pre-tax compensation expense | 1 | 1
Total share-based compensation expense, net of income taxes | 1 | 1
Restricted stock units (RSUs) |  |
Share-based compensation expense |  |
Pre-tax compensation expense | 3 | 3
Income tax benefit |  | (1)
Total share-based compensation expense, net of income taxes | 3 | 2
Performance shares and other share-based awards |  |
Share-based compensation expense |  |
Pre-tax compensation expense | 1 | 2
Total share-based compensation expense, net of income taxes | $ 1 | $ 2

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