Insurance Claim Reserves (Tables)

3 Months Ended

Mar. 31, 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)	March 31, 2023		December 31, 2022
Property-casualty	$	59,058	$	58,643
Accident and health	6		6
Total	$	59,064	$	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:

	Three Months Ended March 31,
(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	6,025		5,133
Estimated decrease in claims and claim adjustment expenses for  claims arising in prior years	(90)		(114)
Total increases	5,935		5,019
Claims and claim adjustment expense payments for claims arising in:
Current year	1,177		1,074
Prior years	4,382		3,498
Total payments	5,559		4,572
Unrealized foreign exchange (gain) loss	28		(13)
Net reserves at end of period	51,257		49,122
Plus reinsurance recoverables on unpaid losses	7,801		8,441
Claims and claim adjustment expense reserves at end of period	$	59,058	$	57,563