Fair Value of Financial Instruments (Fair Value Inputs Quantitative Information) (Details) (USD $) In Millions, unless otherwise specified										9 Months Ended											9 Months Ended
	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013 Significant Unobservable Inputs (Level 3) [Member]	Dec. 31, 2012 Significant Unobservable Inputs (Level 3) [Member]	Sep. 30, 2013 Significant Unobservable Inputs (Level 3) [Member] Discounted Cash Flow Valuation Technique [Member] Corporate Bonds [Member] Fixed Maturity AFS Securities [Member]	Sep. 30, 2013 Significant Unobservable Inputs (Level 3) [Member] Discounted Cash Flow Valuation Technique [Member] Foreign Government Bonds [Member] Fixed Maturity AFS Securities [Member]	Sep. 30, 2013 Significant Unobservable Inputs (Level 3) [Member] Discounted Cash Flow Valuation Technique [Member] Hybrid And Redeemable Preferred Securities [Member] Fixed Maturity AFS Securities [Member]	Sep. 30, 2013 Significant Unobservable Inputs (Level 3) [Member] Discounted Cash Flow Valuation Technique [Member] Equity AFS Securities [Member]	Sep. 30, 2013 Significant Unobservable Inputs (Level 3) [Member] Discounted Cash Flow Valuation Technique [Member] Indexed Annuity and Universal Life Contracts Embedded Derivatives [Member]	Sep. 30, 2013 Significant Unobservable Inputs (Level 3) [Member] Discounted Cash Flow Valuation Technique [Member] Minimum [Member] Corporate Bonds [Member] Fixed Maturity AFS Securities [Member]	Sep. 30, 2013 Significant Unobservable Inputs (Level 3) [Member] Discounted Cash Flow Valuation Technique [Member] Minimum [Member] Foreign Government Bonds [Member] Fixed Maturity AFS Securities [Member]	Sep. 30, 2013 Significant Unobservable Inputs (Level 3) [Member] Discounted Cash Flow Valuation Technique [Member] Minimum [Member] Hybrid And Redeemable Preferred Securities [Member] Fixed Maturity AFS Securities [Member]	Sep. 30, 2013 Significant Unobservable Inputs (Level 3) [Member] Discounted Cash Flow Valuation Technique [Member] Minimum [Member] Equity AFS Securities [Member]	Sep. 30, 2013 Significant Unobservable Inputs (Level 3) [Member] Discounted Cash Flow Valuation Technique [Member] Minimum [Member] Indexed Annuity and Universal Life Contracts Embedded Derivatives [Member]	Sep. 30, 2013 Significant Unobservable Inputs (Level 3) [Member] Discounted Cash Flow Valuation Technique [Member] Maximum [Member] Corporate Bonds [Member] Fixed Maturity AFS Securities [Member]	Sep. 30, 2013 Significant Unobservable Inputs (Level 3) [Member] Discounted Cash Flow Valuation Technique [Member] Maximum [Member] Foreign Government Bonds [Member] Fixed Maturity AFS Securities [Member]	Sep. 30, 2013 Significant Unobservable Inputs (Level 3) [Member] Discounted Cash Flow Valuation Technique [Member] Maximum [Member] Hybrid And Redeemable Preferred Securities [Member] Fixed Maturity AFS Securities [Member]	Sep. 30, 2013 Significant Unobservable Inputs (Level 3) [Member] Discounted Cash Flow Valuation Technique [Member] Maximum [Member] Equity AFS Securities [Member]	Sep. 30, 2013 Significant Unobservable Inputs (Level 3) [Member] Discounted Cash Flow Valuation Technique [Member] Maximum [Member] Indexed Annuity and Universal Life Contracts Embedded Derivatives [Member]	Sep. 30, 2013 Significant Unobservable Inputs (Level 3) [Member] Monte Carlo Valuation Technique [Member] GLB Embedded Derivative Reserves [Member]	Sep. 30, 2013 Significant Unobservable Inputs (Level 3) [Member] Monte Carlo Valuation Technique [Member] Minimum [Member] GLB Embedded Derivative Reserves [Member]	Sep. 30, 2013 Significant Unobservable Inputs (Level 3) [Member] Monte Carlo Valuation Technique [Member] Maximum [Member] GLB Embedded Derivative Reserves [Member]
Assets Fair Value Disclosure [Abstract]
Assets Fair Value Disclosure	$ 197,224	$ 187,710	$ 4,383	$ 4,055	$ 1,031	$ 97	$ 21	$ 13												$ 711
Liquidity Duration Adjustment										0.60%	2.10%	1.60%	4.30%		15.30%	4.10%	2.00%	4.50%
Liabilities Fair Value Disclosure [Abstract]
Liabilities measured at fair value	$ (2,320)	$ (3,198)	$ (996)	$ (1,780)					$ (924)
Fair Value Inputs [Abstract]
Lapse Rate														1.00%					15.00%		1.00%	27.00%
Utilization of guaranteed withdrawal																					90.00%	100.00%
NPR																					0.00%	0.51%
Volatility																					1.00%	28.00%