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v3.25.1

Earnings Per Common Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2025 | Mar. 31, 2024
Numerator: |  |  |
Net income available to Arch |  | $ 574 | $ 1,120
Preferred dividends |  | (10) | (10)
Net income (loss) available to Arch common shareholders, basic |  | 564 | 1,110
Net income (loss) available to Arch common shareholders, diluted |  | $ 564 | $ 1,110
Denominator: |  |  |
Weighted average common shares outstanding — basic |  | 372.9 | 370.9
Effect of dilutive common share equivalents: |  |  |
Nonvested restricted shares |  | 2.1 | 2.3
Stock options | [1] | 6.9 | 7.3
Weighted average common shares and common share equivalents outstanding — diluted |  | 381.9 | 380.5
Earnings per common share: |  |  |
Basic (per share) |  | $ 1.51 | $ 2.99
Diluted (per share) |  | $ 1.48 | $ 2.92
Stock options |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |
Antidilutive securities excluded from computation of earnings per common share (shares) |  | 2.3 | 0.6
[1] | Certain stock options were not included in the computation of diluted earnings per share where the exercise price of the stock options exceeded the average market price and would have been anti-dilutive or where, when applying the treasury stock method to in-the-money options, the sum of the proceeds, including unrecognized compensation, exceeded the average market price and would have been anti-dilutive. For the 2025 first quarter and 2024 first quarter, the number of stock options excluded were 2.3 million and 0.6 million, respectively.

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