Insurance (Liabilities for Guarantees) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Movement In Guaranteed Benefit Liability Gross Rollforward
Balance at January 1,	$ 7,233	$ 5,998	$ 5,084
Incurred guaranteed benefits	385	1,396	1,061
Paid guaranteed benefits	(118)	(161)	(147)
Balance at December 31,	7,500	7,233	5,998
Ceded [Member]
Movement In Guaranteed Benefit Liability Gross Rollforward
Balance at January 1,	991	831	771
Incurred guaranteed benefits	184	180	80
Paid guaranteed benefits	(12)	(20)	(20)
Balance at December 31,	1,163	991	831
Net [Member]
Movement In Guaranteed Benefit Liability Gross Rollforward
Balance at January 1,	6,242	5,167	4,313
Incurred guaranteed benefits	201	1,216	981
Paid guaranteed benefits	(106)	(141)	(127)
Balance at December 31,	6,337	6,242	5,167
Variable Annuity Guarantees [Member] | Guaranteed Minimum Death Benefit [Member]
Movement In Guaranteed Benefit Liability Gross Rollforward
Balance at January 1,	567	432	272
Incurred guaranteed benefits	200	252	273
Paid guaranteed benefits	(82)	(117)	(113)
Balance at December 31,	685	567	432
Variable Annuity Guarantees [Member] | Guaranteed Minimum Income Benefit [Member]
Movement In Guaranteed Benefit Liability Gross Rollforward
Balance at January 1,	1,635	882	623
Incurred guaranteed benefits	229	771	269
Paid guaranteed benefits	(13)	(18)	(10)
Balance at December 31,	1,851	1,635	882
Variable Annuity Guarantees [Member] | Ceded [Member] | Guaranteed Minimum Death Benefit [Member]
Movement In Guaranteed Benefit Liability Gross Rollforward
Balance at January 1,	56	54	39
Incurred guaranteed benefits	(5)	22	35
Paid guaranteed benefits	(10)	(20)	(20)
Balance at December 31,	41	56	54
Variable Annuity Guarantees [Member] | Ceded [Member] | Guaranteed Minimum Income Benefit [Member]
Movement In Guaranteed Benefit Liability Gross Rollforward
Balance at January 1,	9	8	(1)
Incurred guaranteed benefits	0	1	9
Paid guaranteed benefits	(2)	0	0
Balance at December 31,	7	9	8
Variable Annuity Guarantees [Member] | Net [Member] | Guaranteed Minimum Death Benefit [Member]
Movement In Guaranteed Benefit Liability Gross Rollforward
Balance at January 1,	511	378	233
Incurred guaranteed benefits	205	230	238
Paid guaranteed benefits	(72)	(97)	(93)
Balance at December 31,	644	511	378
Variable Annuity Guarantees [Member] | Net [Member] | Guaranteed Minimum Income Benefit [Member]
Movement In Guaranteed Benefit Liability Gross Rollforward
Balance at January 1,	1,626	874	624
Incurred guaranteed benefits	229	770	260
Paid guaranteed benefits	(11)	(18)	(10)
Balance at December 31,	1,844	1,626	874
Universal And Variable Life Contracts [Member] | Secondary Guarantees [Member]
Movement In Guaranteed Benefit Liability Gross Rollforward
Balance at January 1,	4,785	4,463	3,991
Incurred guaranteed benefits	(64)	348	496
Paid guaranteed benefits	(23)	(26)	(24)
Balance at December 31,	4,698	4,785	4,463
Universal And Variable Life Contracts [Member] | Secondary Guarantees [Member] | Foreign Currency Translation [Member]
Movement In Guaranteed Benefit Liability Gross Rollforward
Incurred guaranteed benefits	(597)	(39)	231
Universal And Variable Life Contracts [Member] | Paid-Up Guarantees [Member]
Movement In Guaranteed Benefit Liability Gross Rollforward
Balance at January 1,	246	221	198
Incurred guaranteed benefits	20	25	23
Paid guaranteed benefits	0	0	0
Balance at December 31,	266	246	221
Universal And Variable Life Contracts [Member] | Ceded [Member] | Secondary Guarantees [Member]
Movement In Guaranteed Benefit Liability Gross Rollforward
Balance at January 1,	753	614	594
Incurred guaranteed benefits	175	139	20
Paid guaranteed benefits	0	0	0
Balance at December 31,	928	753	614
Universal And Variable Life Contracts [Member] | Ceded [Member] | Paid-Up Guarantees [Member]
Movement In Guaranteed Benefit Liability Gross Rollforward
Balance at January 1,	173	155	139
Incurred guaranteed benefits	14	18	16
Paid guaranteed benefits	0	0	0
Balance at December 31,	187	173	155
Universal And Variable Life Contracts [Member] | Net [Member] | Secondary Guarantees [Member]
Movement In Guaranteed Benefit Liability Gross Rollforward
Balance at January 1,	4,032	3,849	3,397
Incurred guaranteed benefits	(239)	209	476
Paid guaranteed benefits	(23)	(26)	(24)
Balance at December 31,	3,770	4,032	3,849
Universal And Variable Life Contracts [Member] | Net [Member] | Paid-Up Guarantees [Member]
Movement In Guaranteed Benefit Liability Gross Rollforward
Balance at January 1,	73	66	59
Incurred guaranteed benefits	6	7	7
Paid guaranteed benefits	0	0	0
Balance at December 31,	$ 79	$ 73	$ 66