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Schedule III - Supplementary Insurance Information | 12 Months Ended
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Dec. 31, 2022
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Abstract] |
Supplementary Insurance Information | SCHEDULE III ARCH CAPITAL GROUP LTD. AND SUBSIDIARIES SUPPLEMENTARY INSURANCE INFORMATION (U.S. dollars in thousands)
| Deferred Acquisition Costs | Reserves for Losses and Loss Adjustment Expenses | Unearned Premiums | Net Premiums Earned | Net Investment Income (1) | Net Losses and Loss Adjustment Expenses Incurred | Amortization of Deferred Acquisition Costs | Other Operating Expenses (2) | Net Premiums Written
December 31, 2022 |  |  |  |  |  |  |  |  |
Insurance | $301,398 |  | $11,017,327 |  | $3,381,810 |  | $4,559,335 |  | NM | $2,782,945 |  | $885,866 |  | $665,472 |  | $5,020,642 |
Reinsurance | 992,339 |  | 8,305,854 |  | 3,206,284 |  | 3,959,381 |  | NM | 2,568,843 |  | 813,555 |  | 267,531 |  | 4,923,976 |
Mortgage | (29,867) |  | 708,762 |  | 748,908 |  | 1,159,361 |  | NM | (324,271) |  | 40,159 |  | 195,172 |  | 1,132,571 |
Other |  |  |  |  |  |  |  |  |
Total | $1,263,870 |  | $20,031,943 |  | $7,337,002 |  | $9,678,077 |  | NM | $5,027,517 |  | $1,739,580 |  | $1,128,175 |  | $11,077,189 |
December 31, 2021 |  |  |  |  |  |  |  |  |
Insurance | $378,265 |  | $9,810,622 |  | $2,937,664 |  | $3,626,468 |  | NM | $2,344,365 |  | $606,265 |  | $558,906 |  | $4,148,193 |
Reinsurance | 424,390 |  | 6,878,721 |  | 2,263,264 |  | 2,840,443 |  | NM | 1,924,719 |  | 536,754 |  | 212,810 |  | 3,254,374 |
Mortgage | 99,186 |  | 1,067,813 |  | 811,014 |  | 1,283,419 |  | NM | 56,677 |  | 97,418 |  | 194,010 |  | 1,261,068 |
Other |  |  |  | 331,968 |  | NM | 259,042 |  | 62,741 |  | 32,869 |  | 354,702 |
Total | $901,841 |  | $17,757,156 |  | $6,011,942 |  | $8,082,298 |  | NM | $4,584,803 |  | $1,303,178 |  | $998,595 |  | $9,018,337 |
December 31, 2020 |  |  |  |  |  |  |  |  |
Insurance | $254,833 |  | $8,989,930 |  | $2,334,225 |  | $2,871,420 |  | NM | $2,092,453 |  | $418,483 |  | $489,153 |  | $3,162,907 |
Reinsurance | 278,422 |  | 5,027,742 |  | 1,356,983 |  | 2,162,229 |  | NM | 1,628,320 |  | 354,048 |  | 168,011 |  | 2,457,370 |
Mortgage | 203,748 |  | 976,673 |  | 740,043 |  | 1,397,935 |  | NM | 528,344 |  | 134,240 |  | 162,202 |  | 1,279,850 |
Other | 53,705 |  | 1,519,583 |  | 407,714 |  | 560,351 |  | NM | 440,482 |  | 98,071 |  | 55,810 |  | 537,589 |
Total | $790,708 |  | $16,513,928 |  | $4,838,965 |  | $6,991,935 |  | NM | $4,689,599 |  | $1,004,842 |  | $875,176 |  | $7,437,716 |
(1) The Company does not manage its assets by segment and, accordingly, net investment income is not allocated to each underwriting segment. See note 4, “Segment Information,” to our consolidated financial statements in Item 8 for information related to the ‘other’ segment. (2) Certain other operating expenses relate to the Company’s corporate segment. Such amounts are not reflected in the table above. See note 4, “Segment Information,” to our consolidated financial statements in Item 8 for information related to the corporate segment.

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- Definition The entire disclosure for supplementary insurance information by segment. Includes, but is not limited to, deferred policy acquisition cost; future policy benefit, loss, claim and loss expenses; unearned premium; other policy claim and benefit payable; premium revenue; net investment income; benefit, claim, loss and settlement expenses; amortization of deferred policy acquisition cost; other operating expense; and premium written. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 12 -Subsection 16 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 235 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-16) -URI https://asc.fasb.org/extlink&oid=120401096&loc=d3e574960-122915 + Details
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