Liabilities for Unpaid Claims and Claims Expenses (Tables)

3 Months Ended

Mar. 31, 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

	March 31,		March 31,
(In millions)	2017		2016
Group Disability and Life	$	4,384	$	4,146
Global Supplemental Benefits		425		367
Other Operations		197		211
Unpaid claims and claim expenses	$	5,006	$	4,724

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
(In millions)	March 31, 2017		March 31, 2016
Beginning balance	$	4,726	$	4,359
Less: Reinsurance		121		115
Beginning balance, net		4,605		4,244
Incurred claims related to:
Current year		1,148		988
Prior years:
Interest accretion		43		43
All other incurred		(64)		105
Total incurred		1,127		1,136
Paid claims related to:
Current year		371		327
Prior years		691		660
Total paid		1,062		987
Foreign currency		16		5
Ending balance, net		4,686		4,398
Add: Reinsurance		123		115
Ending balance	$	4,809	$	4,513