Unaudited Consolidated Balance Sheets - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Investments:
Debt securities available for sale, at fair value	$ 24,167	$ 21,015
Equity securities, at fair value	894	860
Other investments, at fair value	2,068	1,644
Investments accounted for using the equity method	4,251	3,774
Total investments	31,380	27,293
Cash	859	855
Accrued investment income	217	159
Investment in operating affiliates	1,000	965
Premiums receivable (net of allowance for credit losses: $34 and $35)	4,937	3,625
Reinsurance recoverable on unpaid and paid losses and loss adjustment expenses (net of allowance for credit losses: $23 and $22)	6,821	6,564
Contractholder receivables (net of allowance for credit losses: $3 and $3)	1,805	1,731
Ceded unearned premiums	2,444	1,799
Deferred acquisition costs	1,483	1,264
Receivable for securities sold	59	12
Goodwill and intangible assets	739	804
Other assets	3,483	2,919
Total assets	55,227	47,990
Liabilities
Reserve for losses and loss adjustment expenses	21,836	20,032
Unearned premiums	9,074	7,337
Reinsurance balances payable	2,215	1,530
Contractholder payables	1,807	1,734
Collateral held for insured obligations	274	249
Senior notes	2,726	2,725
Payable for securities purchased	417	95
Other liabilities	1,637	1,367
Total liabilities	39,986	35,069
Commitments and contingencies (refer to Note 10)
Redeemable noncontrolling interests	2	11
Shareholders' Equity
Non-cumulative preferred shares	830	830
Common shares ($0.0011 par, shares issued: 591.4 and 588.3)	1	1
Additional paid-in capital	2,297	2,211
Retained earnings	17,971	15,892
Accumulated other comprehensive income (loss), net of deferred income tax	(1,453)	(1,646)
Common shares held in treasury, at cost (shares: 218.3 and 217.9)	(4,407)	(4,378)
Total shareholders' equity available to Arch	15,239	12,910
Total liabilities, noncontrolling interests and shareholders' equity	55,227	47,990
Fixed maturities available for sale, at fair value (amortized cost: $23,882 and $21,282; net of allowance for credit losses: $57 and $41)
Investments:
Debt securities available for sale, at fair value	22,485	19,683
Short-term investments available for sale, at fair value (amortized cost: $1,680 and $1,333; net of allowance for credit losses: $0 and $0)
Investments:
Debt securities available for sale, at fair value	$ 1,682	$ 1,332