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Condensed Consolidated Statements of Shareholders' Equity (Unaudited) (Parenthetical) - USD ($) shares in Millions, $ in Millions | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2025 | Mar. 31, 2025 | Jun. 30, 2024 | Mar. 31, 2024 | Jun. 30, 2025 | Jun. 30, 2024 | Dec. 31, 2024 | Dec. 31, 2023
Statement of Stockholders' Equity [Abstract] |  |  |  |  |  |  |  |
Dividends declared per share (in dollars per share) | $ 0.665 | $ 0.665 | $ 0.665 | $ 0.665 | $ 1.33 | $ 1.33 |  |
Treasury shares held in trust (in shares) | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
Treasury shares held in trust | $ 29 | $ 29 | $ 29 | $ 29 | $ 29 | $ 29 | $ 29 | $ 29
Common stock | $ 18 | $ 18 | $ 18 | $ 18 | $ 18 | $ 18 | $ 18 | $ 18

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