Shareholders' Equity (Tables)

12 Months Ended

Dec. 31, 2022

Stockholders' Equity Note [Abstract]

Roll-forward of changes in issued and outstanding Common Shares

The following table presents a roll-forward of changes in Arch Capital’s issued and outstanding Common Shares:

	Year Ended December 31,
	2022	2021	2020
Common Shares:
Shares issued and outstanding, beginning of year	583,289,850	579,000,841	574,617,195
Shares issued (1)	3,517,399	2,669,229	2,646,164
Restricted shares issued, net of cancellations	1,443,513	1,619,780	1,737,482
Shares issued and outstanding, end of year	588,250,762	583,289,850	579,000,841
Common shares in treasury, end of year	(217,904,765)	(204,365,956)	(172,280,199)
Shares issued and outstanding, end of year	370,345,997	378,923,894	406,720,642

(1)    Includes shares issued from the exercise of stock options and stock appreciation rights, the vesting of restricted share units and shares issued from the employee share purchase plan.

Schedule of share repurchases

The Company’s repurchases under the share repurchase program were as follows:

	Year Ended December 31,
	2022		2021		2020
Aggregate cost of shares repurchased	$	585,823	$	1,234,294	$	83,472
Shares repurchased	12,891,405		31,486,830		2,850,102
Average price per share repurchased	$	45.44	$	39.20	$	29.29