Debt and Financing Arrangements - (Tables)

12 Months Ended

Dec. 31, 2021

Debt Disclosure [Abstract]

Schedule of senior notes

The Company’s senior notes payable at December 31, 2021 and 2020 were as follows:

					Carrying Amount at
	Interest		Principal		December 31,
	(Fixed)		Amount		2021		2020
2034 notes (1)	7.350	%	300,000		297,488		297,367
2043 notes (2)	5.144	%	500,000		495,063		494,944
2026 notes (3)	4.011	%	500,000		497,633		497,211
2046 notes (4)	5.031	%	450,000		445,490		445,402
2050 notes (5)	3.635	%	1,000,000		988,720		988,500
Somers notes (6)							137,689
			$	2,750,000	$	2,724,394	$	2,861,113

(1) Senior notes of Arch Capital issued on May 4, 2004 and due May 1, 2034 (“2034 notes”).

(2) Senior notes of Arch-U.S., a wholly-owned subsidiary of Arch Capital, issued on December 13, 2013 and due November 1, 2043 (“2043 notes”), fully and unconditionally guaranteed by Arch Capital.

(3) Senior notes of Arch Capital Finance LLC (“Arch Finance”), a wholly-owned finance subsidiary of Arch Capital, issued on December 8, 2016 and due December 15, 2026 (“2026 notes”), fully and unconditionally guaranteed by Arch Capital.

(4) Senior notes of Arch Finance issued on December 8, 2016 and due December 15, 2046 (“2046 notes”), fully and unconditionally guaranteed by Arch Capital

(5) Senior notes of Arch Capital issued on June 30, 2020 and due June 30, 2050 (“2050 notes”).

(6) Senior notes of Somers issued on July 2, 2019 and due July 2, 2029 (“Somers Senior Notes”), reflecting the elimination of amounts owned by Arch-U.S. Effective July 1, 2021, the Company no longer consolidates Somers in its financials. See note 12.

Schedule of outstanding revolving credit agreement borrowings

The Company’s outstanding revolving credit agreement borrowings were as follows:

	Year Ended December 31,
	2021		2020
Arch Capital	$	—	$	—
Somers			155,687
Total	$	—	$	155,687