Earnings Per Common Share (Tables)

12 Months Ended

Dec. 31, 2024

Earnings Per Share [Abstract]

Schedule of computation of basic and diluted earnings per common share

The following table sets forth the computation of basic and diluted earnings per common share:

	Year Ended December 31,
	2024		2023		2022
Numerator:
Net income	$	4,312	$	4,442	$	1,482
Amounts attributable to noncontrolling interests	—		1		(6)
Net income available to Arch	4,312		4,443		1,476
Preferred dividends	(40)		(40)		(40)
Net income available to Arch common shareholders	$	4,272	$	4,403	$	1,436
Denominator:
Weighted average common shares outstanding	372.5		368.7		368.6
Effect of dilutive common share equivalents:
Nonvested restricted shares	2.1		2.5		2.1
Stock options (1)	7.2		7.6		6.9
Weighted average common shares and common share equivalents outstanding – diluted	381.8		378.8		377.6
Earnings per common share:
Basic	$	11.47	$	11.94	$	3.90
Diluted	$	11.19	$	11.62	$	3.80

(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 2024, 2023 and 2022, the number of stock options excluded were 2.2 million, 0.5 million and 0.8 million, respectively.