XML 75 R59.htm IDEA: XBRL DOCUMENT
v3.25.4

Shareholders' Equity (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2025
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,
| 2025 |  | 2024 |  | 2023
Common Shares: |  |  |  |  |
Shares issued and outstanding, beginning of year | 595.6 |  |  | 591.9 |  |  | 588.3 |
Shares issued (1) | 3.1 |  |  | 2.5 |  |  | 2.8 |
Restricted shares issued, net of cancellations | 1.1 |  |  | 1.2 |  |  | 0.8 |
Shares issued and outstanding, end of year | 599.8 |  |  | 595.6 |  |  | 591.9 |
Common shares in treasury, end of year | (240.8) |  |  | (219.2) |  |  | (218.5) |
Shares issued and outstanding, end of year | 359.0 |  |  | 376.4 |  |  | 373.4 |
(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,
| 2025 |  | 2024 |  | 2023
Aggregate cost of shares repurchased | $ | 1,889.8 |  |  | $ | 23.5 |  |  | $ | — |
Shares repurchased | 21.2 |  |  | 0.3 |  |  | — |
Average price per share repurchased | $ | 89.26 |  |  | $ | 89.63 |  |  | $ | — |

X
- Definition Tabular disclosure of the change in common stock outstanding. + References No definition available. + Details
Name: | us-gaap_ScheduleOfCommonStockOutstandingRollForwardTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of treasury stock, including, but not limited to, average cost per share, description of share repurchase program, shares repurchased, shares held for each class of treasury stock. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481520/505-30-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481520/505-30-50-3 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481520/505-30-50-4 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481549/505-30-45-1 + Details
Name: | us-gaap_ScheduleOfTreasuryStockByClassTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_StockholdersEquityNoteAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration