Insurance Claim Reserves (Tables)

3 Months Ended

Mar. 31, 2024

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, 2024		December 31, 2023
Property-casualty	$	62,482	$	61,621
Accident and health	5		6
Total	$	62,487	$	61,627

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)	2024		2023
Claims and claim adjustment expense reserves at beginning of year	$	61,621	$	58,643
Less reinsurance recoverables on unpaid losses	7,817		7,790
Net reserves at beginning of year	53,804		50,853
Estimated claims and claim adjustment expenses for claims arising in the current year	6,679		6,025
Estimated decrease in claims and claim adjustment expenses for  claims arising in prior years	(49)		(90)
Total increases	6,630		5,935
Claims and claim adjustment expense payments for claims arising in:
Current year	1,275		1,177
Prior years	4,435		4,382
Total payments	5,710		5,559
Unrealized foreign exchange (gain) loss	(61)		28
Net reserves at end of period	54,663		51,257
Plus reinsurance recoverables on unpaid losses	7,819		7,801
Claims and claim adjustment expense reserves at end of period	$	62,482	$	59,058