Financing Receivables Financing Receivables (Credit Quality Information Tables) (Details 3) (USD $) In Millions, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013	Dec. 31, 2012
Commercial mortgage loans
Total loans, gross	$ 3,995	$ 3,941
Less: allowance for loan losses	35	37	39	44
Commercial mortgage loans [Member]
Commercial mortgage loans
Total loans, gross	2,714	2,682
Less: allowance for loan losses	25	26
Total loans, net	2,689	2,656
Percentage of gross commercial mortgage loans	100.00%	100.00%
Commercial mortgage loans [Member] | Apartment Building [Member]
Commercial mortgage loans
Total loans, gross	478	488
Percentage of gross commercial mortgage loans	18.00%	18.00%
Commercial mortgage loans [Member] | Hotel [Member]
Commercial mortgage loans
Total loans, gross	34	33
Percentage of gross commercial mortgage loans	1.00%	1.00%
Commercial mortgage loans [Member] | Industrial [Member]
Commercial mortgage loans
Total loans, gross	476	454
Percentage of gross commercial mortgage loans	18.00%	17.00%
Commercial mortgage loans [Member] | Mixed use [Member]
Commercial mortgage loans
Total loans, gross	45	36
Percentage of gross commercial mortgage loans	2.00%	1.00%
Commercial mortgage loans [Member] | Office [Member]
Commercial mortgage loans
Total loans, gross	556	559
Percentage of gross commercial mortgage loans	20.00%	21.00%
Commercial mortgage loans [Member] | Retail [Member]
Commercial mortgage loans
Total loans, gross	977	951
Percentage of gross commercial mortgage loans	36.00%	36.00%
Commercial mortgage loans [Member] | Other [Member]
Commercial mortgage loans
Total loans, gross	148	161
Percentage of gross commercial mortgage loans	5.00%	6.00%
Commercial mortgage loans [Member] | East North Central [Member]
Commercial mortgage loans
Total loans, gross	235	251
Percentage of gross commercial mortgage loans	9.00%	9.00%
Commercial mortgage loans [Member] | East South Central [Member]
Commercial mortgage loans
Total loans, gross	65	71
Percentage of gross commercial mortgage loans	2.00%	3.00%
Commercial mortgage loans [Member] | Middle Atlantic [Member]
Commercial mortgage loans
Total loans, gross	220	211
Percentage of gross commercial mortgage loans	8.00%	8.00%
Commercial mortgage loans [Member] | Mountain [Member]
Commercial mortgage loans
Total loans, gross	261	257
Percentage of gross commercial mortgage loans	10.00%	10.00%
Commercial mortgage loans [Member] | New England [Member]
Commercial mortgage loans
Total loans, gross	141	149
Percentage of gross commercial mortgage loans	5.00%	5.00%
Commercial mortgage loans [Member] | Pacific [Member]
Commercial mortgage loans
Total loans, gross	680	661
Percentage of gross commercial mortgage loans	25.00%	25.00%
Commercial mortgage loans [Member] | South Atlantic [Member]
Commercial mortgage loans
Total loans, gross	733	713
Percentage of gross commercial mortgage loans	27.00%	26.00%
Commercial mortgage loans [Member] | West North Central [Member]
Commercial mortgage loans
Total loans, gross	217	207
Percentage of gross commercial mortgage loans	8.00%	8.00%
Commercial mortgage loans [Member] | West South Central [Member]
Commercial mortgage loans
Total loans, gross	$ 162	$ 162
Percentage of gross commercial mortgage loans	6.00%	6.00%