Reserve for Property-Liability Insurance Claims and Claims Expense (Tables)

3 Months Ended

Mar. 31, 2017

Reserve for Property-Liability Insurance Claims and Claims Expense [Abstract]

Schedule of liability for unpaid claims and claims adjustment expense

Activity in the reserve for property-liability insurance claims and claims expense is summarized as follows:

($ in millions)	Three months ended March 31,
	2017			2016
Balance as of January 1	$	25,250		$	23,869
Less reinsurance recoverables	6,184			5,892
Net balance as of January 1	19,066			17,977
SquareTrade acquisition as of January 3, 2017	17			—
Incurred claims and claims expense related to:
Current year	5,513			5,660
Prior years	(97		)	24
Total incurred	5,416			5,684
Claims and claims expense paid related to:
Current year	2,239			2,148
Prior years	2,815			2,867
Total paid	5,054			5,015
Net balance as of March 31	19,445			18,646
Plus reinsurance recoverables	6,183			5,959
Balance as of March 31	$	25,628		$	24,605