Liabilities for Unpaid Claims and Claims Expenses

6 Months Ended

Jun. 30, 2018

Group Disability and Life, Global Supplemental Beneftits and Other Operations [Member]

Liability For Unpaid Claims And Claims Adjustment Expense [Line Items]

Liabilities for Unpaid Claims and Claims Expenses

Note7―Liabilities for Unpaid Claims and Claim Expenses

The following information relates to unpaid claims and claim expense liabilities for short-duration insurance contracts other than those sold by the Global Health Care segment. See Note 8 to the Consolidated Financial Statements in the Company’s 2017 Form 10-K for further information about the assumptions and estimates used to establish this liability.

The liability for unpaid claims and claim expenses by segment as of June 30is as follows:

(In millions)	June 30, 2018		June 30, 2017
Group Disability and Life	$	4,573	$	4,400
Global Supplemental Benefits		480		452
Other Operations		193		187
Unpaid claims and claim expenses	$	5,246	$	5,039

Activity in the Group Disability and Life and the Global Supplemental Benefits segments’ liabilities for unpaid claims and claim expenses is presented in the following table. Liabilities associated with Other Operations are excluded because they pertain to obligations for long-duration insurance contracts or, if short-duration, the liabilities have been fully reinsured.

	Six Months Ended
(In millions)	June 30, 2018		June 30, 2017
Beginning balance	$	4,975	$	4,726
Less: Reinsurance		137		121
Beginning balance, net		4,838		4,605
Incurred claims related to:
Current year		2,382		2,224
Prior years:
Interest accretion		77		83
All other incurred		(66)		(71)
Total incurred		2,393		2,236
Paid claims related to:
Current year		1,204		1,074
Prior years		1,101		1,058
Total paid		2,305		2,132
Foreign currency		(14)		13
Ending balance, net		4,912		4,722
Add: Reinsurance		141		130
Ending balance	$	5,053	$	4,852

Reinsurance in the table above reflects amounts due from reinsurers related to unpaid claims liabilities. The Company's insurance subsidiaries enter into agreements with other companies primarily to limit losses from large exposures and to permit recovery of a portion of incurred losses. See Note 8 for additional information on reinsurance.

The majority of the liability for unpaid claims and claim expenses is related to disability claims with long-tailed payouts. Interest earned on assets backing these liabilities is an integral part of pricing and reserving. Therefore, interest accreted on prior year balances is shown as a separate component of prior year incurred claims. This interest is calculated by applying the average discount rateused in determining the liability balance to the average liability balance over the period. The remaining prior year incurred claims amount primarily reflects updates to the Company’s liability estimates and variances between actual experience during the period relative to the assumptions and expectations reflected in determining the liability. Assumptions reflect the Company’s expectations over the life of the book of business and will vary from actual experience in any period, both favorably and unfavorably, with variation in resolution rates being the most significant driver for the long-term disability business and variations in mortality and morbidity being the most significant factors for other business. Favorable prior year incurred claims reported for the six months endedJune 30, 2018 largely reflect favorable life and voluntary loss ratio experience relative to expectations for claims incurred in 2017. Favorable prior year incurred claims reported for the six months endedJune 30, 2017 largely reflect improvedlong-term disability resolution rate experience relative to expectations.