Insurance Claim Reserves (Tables)

3 Months Ended

Mar. 31, 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)	March 31, 2019		December 31, 2018
Property-casualty	$	50,704	$	50,653
Accident and health	14		15
Total	$	50,718	$	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:

	Three Months Ended March 31,
(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	4,435			4,391
Estimated decrease in claims and claim adjustment expenses for claims arising in prior years	(16		)	(116		)
Total increases	4,419			4,275
Claims and claim adjustment expense payments for claims arising in:
Current year	970			1,009
Prior years	3,320			3,040
Total payments	4,290			4,049
Unrealized foreign exchange (gain) loss	41			(10		)
Net reserves at end of period	42,641			41,726
Plus reinsurance recoverables on unpaid losses	8,063			8,068
Claims and claim adjustment expense reserves at end of period	$	50,704		$	49,794