Insurance Claim Reserves (Tables)

6 Months Ended

Jun. 30, 2023

Insurance Loss Reserves [Abstract]

Claims and claim adjustment expense reserves [Table Text Block]

Claims and claim adjustment expense reserves were as follows:

(in millions)	June 30, 2023		December 31, 2022
Property-casualty	$	60,564	$	58,643
Accident and health	7		6
Total	$	60,571	$	58,649

Reconciliation of beginning and ending property casualty reserve balances for claims and claim adjustment expenses [Table Text Block]

The following table presents a reconciliation of beginning and ending property casualty reserve balances for claims and claim adjustment expenses:

	Six Months Ended June 30,
(in millions)	2023		2022
Claims and claim adjustment expense reserves at beginning of year	$	58,643	$	56,897
Less reinsurance recoverables on unpaid losses	7,790		8,209
Net reserves at beginning of year	50,853		48,688
Estimated claims and claim adjustment expenses for claims arising in the current year	13,260		11,194
Estimated decrease in claims and claim adjustment expenses for  claims arising in prior years	(118)		(387)
Total increases	13,142		10,807
Claims and claim adjustment expense payments for claims arising in:
Current year	3,898		3,357
Prior years	7,466		6,205
Total payments	11,364		9,562
Unrealized foreign exchange (gain) loss	104		(164)
Net reserves at end of period	52,735		49,769
Plus reinsurance recoverables on unpaid losses	7,829		8,207
Claims and claim adjustment expense reserves at end of period	$	60,564	$	57,976