Insurance Claim Reserves (Tables)

3 Months Ended

Mar. 31, 2022

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, 2022		December 31, 2021
Property-casualty	$	57,563	$	56,897
Accident and health	9		10
Total	$	57,572	$	56,907

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)	2022		2021
Claims and claim adjustment expense reserves at beginning of year	$	56,897	$	54,510
Less reinsurance recoverables on unpaid losses	8,209		8,153
Net reserves at beginning of year	48,688		46,357
Estimated claims and claim adjustment expenses for claims arising in the current year	5,133		5,242
Estimated decrease in claims and claim adjustment expenses for  claims arising in prior years	(114)		(294)
Total increases	5,019		4,948
Claims and claim adjustment expense payments for claims arising in:
Current year	1,074		1,059
Prior years	3,498		3,012
Total payments	4,572		4,071
Unrealized foreign exchange (gain) loss	(13)		28
Net reserves at end of period	49,122		47,262
Plus reinsurance recoverables on unpaid losses	8,441		8,068
Claims and claim adjustment expense reserves at end of period	$	57,563	$	55,330