SCHEDULE IV - CONSOLIDATED REINSURANCE (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Consolidated reinsurance, net [Abstract]
Premiums Earned, Net, Total	$ 2,988		$ 2,687		$ 2,462
Reinsurance Related [Member]
Consolidated reinsurance, net [Abstract]
Gross Amount	9,064		8,023		7,379
Ceded to Other Companies	1,410		1,275		1,190
Assumed from Other Companies	7		8		9
Premiums Earned, Net, Total	7,661		6,756		6,198
Gross Amount, Life Insurance in Force	1,034,800	[1]	990,600	[1]	929,100	[1]
Ceded to Other Companies, Life Insurance in Force	292,800	[1]	313,200	[1]	323,300	[1]
Assumed from Other Companies, Life Insurance in Force	1,500	[1]	1,700	[1]	2,000	[1]
Premiums, Net, Life Insurance in Force, Total	743,500	[1]	679,100	[1]	607,800	[1]
Percentage of Amount Assumed to Net, Life Insurance in Force	0.20%	[1]	0.30%	[1]	0.30%	[1]
Life insurance and annuities [Member] | Reinsurance Related [Member]
Consolidated reinsurance, net [Abstract]
Gross Amount	7,579	[2]	6,644	[2]	6,113	[2]
Ceded to Other Companies	1,381	[2]	1,247	[2]	1,164	[2]
Assumed from Other Companies	7	[2]	8	[2]	9	[2]
Premiums Earned, Net, Total	6,205	[2]	5,405	[2]	4,958	[2]
Percentage of Amount Assumed to Net	0.10%	[2]	0.10%	[2]	0.20%	[2]
Accident and health insurance [Member] | Reinsurance Related [Member]
Consolidated reinsurance, net [Abstract]
Gross Amount	1,485		1,379		1,266
Ceded to Other Companies	29		28		26
Premiums Earned, Net, Total	$ 1,456		$ 1,351		$ 1,240
Percentage of Amount Assumed to Net	0.00%		0.00%		0.00%

[1] Includes Group Protection segment and Other Operations in-force amounts.

[2] Includes insurance fees on universal life and other interest-sensitive products.