Liabilities for Unpaid Claims and Claims Expenses (Tables)

9 Months Ended

Sep. 30, 2017

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

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

Liability balance details

(In millions)	September 30, 2017		September 30, 2016
Group Disability and Life	$	4,442	$	4,288
Global Supplemental Benefits		453		392
Other Operations		182		209
Unpaid claims and claim expenses	$	5,077	$	4,889

Group Disability and Life and Global Supplemental Benefits [Member]

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

Liability balance details

	Three Months Ended				Nine Months Ended
(In millions)	September 30, 2017		September 30, 2016		September 30, 2017		September 30, 2016
Beginning balance	$	4,852	$	4,618	$	4,726	$	4,359
Less: Reinsurance		130		120		121		115
Beginning balance, net		4,722		4,498		4,605		4,244
Incurred claims related to:
Current year		1,066		1,046		3,290		3,158
Prior years:
Interest accretion		36		40		119		125
All other incurred		12		4		(59)		90
Total incurred		1,114		1,090		3,350		3,373
Paid claims related to:
Current year		806		761		1,880		1,771
Prior years		269		275		1,327		1,295
Total paid		1,075		1,036		3,207		3,066
Foreign currency		-		7		13		8
Ending balance, net		4,761		4,559		4,761		4,559
Add: Reinsurance		134		121		134		121
Ending balance	$	4,895	$	4,680	$	4,895	$	4,680