REINSURANCE (Tables)

12 Months Ended

Dec. 31, 2017

Effects of Reinsurance [Line Items]

Supplemental information for gross loss and benefit reserves net of ceded reinsurance

At December 31,		2017				2016
		As		Net of		As		Net of
(in millions)		Reported	Reinsurance			Reported	Reinsurance
Liability for unpaid losses and loss adjustment expenses	$	(78,393)	$	(51,685)	$	(77,077)	$	(61,545)
Future policy benefits for life and accident and health insurance contracts		(45,432)		(44,457)		(42,204)		(41,140)
Reserve for unearned premiums		(19,030)		(15,890)		(19,634)		(16,280)
Reinsurance assets(a)		30,823				19,950

(a)Represents gross reinsurance assets, excluding allowances and reinsurance recoverable on paid losses.

Schedule of long-duration insurance in force ceded to other insurance companies

At December 31,
(in millions)		2017		2016		2015
Long-duration insurance in force ceded	$	202,402	$	174,363	$	177,025

Short-Duration Reinsurance

Effects of Reinsurance [Line Items]

Schedule of insurance premiums written and earned

	Years Ended December 31,
(in millions)		2017		2016		2015
Premiums written:
Direct	$	30,205	$	33,970	$	37,698
Assumed		3,084		2,824		2,972
Ceded		(7,533)		(7,561)		(7,604)
Net	$	25,756	$	29,233	$	33,066
Premiums earned:
Direct	$	30,904	$	34,869	$	37,105
Assumed		3,373		2,962		2,659
Ceded		(7,902)		(7,284)		(7,593)
Net	$	26,375	$	30,547	$	32,171

Long-Duration Reinsurance

Effects of Reinsurance [Line Items]

Schedule of insurance premiums written and earned

Years Ended December 31,
(in millions)		2017		2016		2015
Gross premiums	$	5,338	$	4,732	$	5,240
Ceded premiums		(809)		(789)		(756)
Net	$	4,529	$	3,943	$	4,484