Consolidated Balance Sheets - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Investments:
Debt securities available for sale, at fair value	$ 25,616	$ 21,015
Equity securities, at fair value	1,186	860
Other investments (portion measured at fair value: $2,488 and $1,644)	2,488	1,644
Investments accounted for using the equity method	4,566	3,774
Total investments	33,856	27,293
Cash	917	855
Accrued investment income	236	159
Investment in operating affiliates	1,119	965
Premiums receivable (net of allowance for credit losses: $34 and $35)	4,644	3,625
Reinsurance recoverable on unpaid and paid losses and loss adjustment expenses (net of allowance for credit losses: $21 and $22)	7,064	6,564
Contractholder receivables (net of allowance for credit losses: $3 and $3)	1,814	1,731
Ceded unearned premiums	2,170	1,799
Deferred acquisition costs	1,531	1,264
Receivable for securities sold	63	12
Goodwill and intangible assets	731	804
Other assets	4,761	2,919
Total assets	58,906	47,990
Liabilities
Reserve for losses and loss adjustment expenses	22,752	20,032
Unearned premiums	8,808	7,337
Reinsurance balances payable	2,000	1,530
Contractholder payables	1,817	1,734
Collateral held for insured obligations	259	249
Senior notes	2,726	2,725
Payable for securities purchased	247	95
Other liabilities	1,942	1,367
Total liabilities	40,551	35,069
Commitments and Contingencies
Redeemable noncontrolling interests	2	11
Shareholders’ Equity
Non-cumulative preferred shares	830	830
Common shares ($0.0011 par, shares issued: 591.9 and 588.3)	1	1
Additional paid-in capital	2,327	2,211
Retained earnings	20,295	15,892
Accumulated other comprehensive income (loss), net of deferred income tax	(676)	(1,646)
Common shares held in treasury, at cost (shares: 218.5 and 217.9)	(4,424)	(4,378)
Total shareholders' equity available to Arch	18,353	12,910
Total liabilities, noncontrolling interests and shareholders' equity	58,906	47,990
Fixed maturities available for sale, at fair value (amortized cost: $24,131 and $21,282; net of allowance for credit losses: $28 and $41)
Investments:
Debt securities available for sale, at fair value	23,553	19,683
Short-term investments available for sale, at fair value (amortized cost: $2,064 and $1,333; net of allowance for credit losses: $0 and $0 )
Investments:
Debt securities available for sale, at fair value	$ 2,063	$ 1,332