Investments (Reconciliation Of Available-For-Sale Securities From Cost Basis To Fair Value) (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Amortized cost, gross unrealized gains, losses, OTTI and fair value of AFS securities
Amortized cost	$ 78,903	$ 77,217
Gross unrealized gains	7,912	5,168
Gross unrealized losses	322	1,265
Gross Unrealized OTTI	128	144
Fair Value	86,365	80,976
Equity AFS Securities [Member]
Amortized cost, gross unrealized gains, losses, OTTI and fair value of AFS securities
Amortized cost	235	182
Gross unrealized gains	21	19
Fair Value	256	201
Fixed Maturity AFS Securities [Member]
Amortized cost, gross unrealized gains, losses, OTTI and fair value of AFS securities
Amortized cost	78,668	77,035
Gross unrealized gains	7,891	5,149
Gross unrealized losses	322	1,265
Gross Unrealized OTTI	128	144
Fair Value	86,109	80,775
Corporate Bonds [Member] | Fixed Maturity AFS Securities [Member]
Amortized cost, gross unrealized gains, losses, OTTI and fair value of AFS securities
Amortized cost	67,738	65,808
Gross unrealized gains	6,644	4,374
Gross unrealized losses	277	1,157
Gross Unrealized OTTI	88	90
Fair Value	74,017	68,935
U.S. Government Bonds [Member] | Fixed Maturity AFS Securities [Member]
Amortized cost, gross unrealized gains, losses, OTTI and fair value of AFS securities
Amortized cost	362	355
Gross unrealized gains	37	26
Gross unrealized losses	3	14
Fair Value	396	367
Foreign Government Bonds [Member] | Fixed Maturity AFS Securities [Member]
Amortized cost, gross unrealized gains, losses, OTTI and fair value of AFS securities
Amortized cost	491	505
Gross unrealized gains	65	45
Gross unrealized losses		1
Fair Value	556	549
RMBS [Member] | Fixed Maturity AFS Securities [Member]
Amortized cost, gross unrealized gains, losses, OTTI and fair value of AFS securities
Amortized cost	3,986	4,135
Gross unrealized gains	286	256
Gross unrealized losses		10
Gross Unrealized OTTI	22	31
Fair Value	4,250	4,350
CMBS [Member] | Fixed Maturity AFS Securities [Member]
Amortized cost, gross unrealized gains, losses, OTTI and fair value of AFS securities
Amortized cost	658	713
Gross unrealized gains	36	36
Gross unrealized losses		4
Gross Unrealized OTTI	15	17
Fair Value	679	728
CLOs [Member] | Fixed Maturity AFS Securities [Member]
Amortized cost, gross unrealized gains, losses, OTTI and fair value of AFS securities
Amortized cost	258	232
Gross unrealized gains	1
Gross unrealized losses		1
Gross Unrealized OTTI	3	6
Fair Value	256	225
State And Municipal Bonds [Member] | Fixed Maturity AFS Securities [Member]
Amortized cost, gross unrealized gains, losses, OTTI and fair value of AFS securities
Amortized cost	3,703	3,638
Gross unrealized gains	697	308
Gross unrealized losses	5	27
Fair Value	4,395	3,919
Hybrid And Redeemable Preferred Securities [Member] | Fixed Maturity AFS Securities [Member]
Amortized cost, gross unrealized gains, losses, OTTI and fair value of AFS securities
Amortized cost	888	967
Gross unrealized gains	111	89
Gross unrealized losses	37	51
Fair Value	962	1,005
VIEs' Fixed Maturity Securities [Member] | Fixed Maturity AFS Securities [Member]
Amortized cost, gross unrealized gains, losses, OTTI and fair value of AFS securities
Amortized cost	584	682
Gross unrealized gains	14	15
Fair Value	$ 598	$ 697