Insurance Claim Reserves (Tables)

9 Months Ended

Sep. 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)	September 30, 2019		December 31, 2018
Property-casualty	$	51,598	$	50,653
Accident and health	14		15
Total	$	51,612	$	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:

	Nine Months Ended September 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	14,193		13,707
Estimated increase (decrease) in claims and claim adjustment expenses for claims arising in prior years	214		(255		)
Total increases	14,407		13,452
Claims and claim adjustment expense payments for claims arising in:
Current year	5,174		5,112
Prior years	8,034		7,419
Total payments	13,208		12,531
Unrealized foreign exchange (gain) loss	12		(82		)
Net reserves at end of period	43,682		42,349
Plus reinsurance recoverables on unpaid losses	7,916		8,066
Claims and claim adjustment expense reserves at end of period	$	51,598	$	50,415