Investments (Reconciliation Of Available-For-Sale Securities From Cost Basis To Fair Value) (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Amortized cost, gross unrealized gains, losses, OTTI and fair value of AFS securities
Amortized cost	$ 79,287	$ 77,217
Gross unrealized gains	7,426	5,168
Gross unrealized losses	413	1,265
Gross Unrealized OTTI	120	144
Fair Value	86,180	80,976
Equity AFS Securities [Member]
Amortized cost, gross unrealized gains, losses, OTTI and fair value of AFS securities
Amortized cost	217	182
Gross unrealized gains	17	19
Fair Value	234	201
Fixed Maturity AFS Securities [Member]
Amortized cost, gross unrealized gains, losses, OTTI and fair value of AFS securities
Amortized cost	79,070	77,035
Gross unrealized gains	7,409	5,149
Gross unrealized losses	413	1,265
Gross Unrealized OTTI	120	144
Fair Value	85,946	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	68,077	65,808
Gross unrealized gains	6,175	4,374
Gross unrealized losses	369	1,157
Gross Unrealized OTTI	85	90
Fair Value	73,798	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	365	355
Gross unrealized gains	38	26
Gross unrealized losses	1	14
Fair Value	402	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	489	505
Gross unrealized gains	62	45
Gross unrealized losses		1
Fair Value	551	549
RMBS [Member] | Fixed Maturity AFS Securities [Member]
Amortized cost, gross unrealized gains, losses, OTTI and fair value of AFS securities
Amortized cost	4,063	4,135
Gross unrealized gains	267	256
Gross unrealized losses		10
Gross Unrealized OTTI	21	31
Fair Value	4,309	4,350
CMBS [Member] | Fixed Maturity AFS Securities [Member]
Amortized cost, gross unrealized gains, losses, OTTI and fair value of AFS securities
Amortized cost	607	713
Gross unrealized gains	29	36
Gross unrealized losses		4
Gross Unrealized OTTI	14	17
Fair Value	622	728
CLOs [Member] | Fixed Maturity AFS Securities [Member]
Amortized cost, gross unrealized gains, losses, OTTI and fair value of AFS securities
Amortized cost	287	232
Gross unrealized losses	1	1
Gross Unrealized OTTI		6
Fair Value	286	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	3,709	3,638
Gross unrealized gains	716	308
Gross unrealized losses	5	27
Fair Value	4,420	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	887	967
Gross unrealized gains	110	89
Gross unrealized losses	37	51
Fair Value	960	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	586	682
Gross unrealized gains	12	15
Fair Value	$ 598	$ 697