Insurance Claim Reserves (Tables)

6 Months Ended

Jun. 30, 2019

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, 2019		December 31, 2018
Property-casualty	$	51,059	$	50,653
Accident and health	14		15
Total	$	51,073	$	50,668

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)	2019			2018
Claims and claim adjustment expense reserves at beginning of year	$	50,653		$	49,633
Less reinsurance recoverables on unpaid losses	8,182			8,123
Net reserves at beginning of year	42,471			41,510
Estimated claims and claim adjustment expenses for claims arising in the current year	9,329			9,084
Estimated decrease in claims and claim adjustment expenses for claims arising in prior years	(118		)	(268		)
Total increases	9,211			8,816
Claims and claim adjustment expense payments for claims arising in:
Current year	2,810			2,851
Prior years	5,897			5,454
Total payments	8,707			8,305
Unrealized foreign exchange (gain) loss	62			(102		)
Net reserves at end of period	43,037			41,919
Plus reinsurance recoverables on unpaid losses	8,022			8,026
Claims and claim adjustment expense reserves at end of period	$	51,059		$	49,945