Fair Value of Assets and Liabilities (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Separate Account assets transferred from Level 2 to Level 1	$ 933,000,000	$ 5,000,000
Total commercial mortgage and other loans, net of valuation allowance	398,991,000	426,981,000
Other Long-Term Investments	60,585,000	175,661,000
Other liabilities	113,125,000	108,737,000
Embedded Derivative Fair Value of Embedded Derivative	778,000,000	1,793,000,000
Embedded Derivative Gross Asset	245,000,000	84,000,000
Embedded Derivative Gross Liability	1,023,000,000	1,877,000,000
Fair Value of Level 3 Derivatives	0	739,000
Fair Value Of Preferred Stocks That Transferred From Level 1 To 2	0	7,000,000
Separate Account assets transferred from Level 1 to Level 2	0
MarginDepositAssets	$ 700,000	$ 0