Derivatives and Hedging Activities (Derivative Location and Fair Value) (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2014		Dec. 31, 2013
Balance sheet location and the gross fair value of derivative instruments, including embedded derivatives, by type of derivative and product
Derivative asset, fair value	$ 3,406		$ 3,418
Derivative liability, fair value	4,123		4,370
Macro hedge program [Member]
Balance sheet location and the gross fair value of derivative instruments, including embedded derivatives, by type of derivative and product
Derivative, Notional Amount	2,900		2,800
GMWB and GMAB Embedded Derivatives [Member]
Balance sheet location and the gross fair value of derivative instruments, including embedded derivatives, by type of derivative and product
Derivative, Notional Amount	133,000		142,400
Designated as Hedging Instrument [Member] | Fair value hedges
Balance sheet location and the gross fair value of derivative instruments, including embedded derivatives, by type of derivative and product
Derivative asset, fair value	85		82
Derivatives not designated as hedging instruments
Balance sheet location and the gross fair value of derivative instruments, including embedded derivatives, by type of derivative and product
Derivative asset, fair value	3,321		3,336
Derivative liability, fair value	4,123		4,370
Derivatives not designated as hedging instruments | Guaranteed Minimum Withdrawal Benefit and Accumulation Benefit [Member]
Balance sheet location and the gross fair value of derivative instruments, including embedded derivatives, by type of derivative and product
Derivative asset, fair value	3,229		3,230
Derivative liability, fair value	3,726		4,015
Derivatives not designated as hedging instruments | Other Derivatives [Member]
Balance sheet location and the gross fair value of derivative instruments, including embedded derivatives, by type of derivative and product
Derivative asset, fair value	92		106
Derivative liability, fair value	397		355
Other assets | Designated as Hedging Instrument [Member] | Fair value hedges | Fixed rate debt
Balance sheet location and the gross fair value of derivative instruments, including embedded derivatives, by type of derivative and product
Derivative asset, fair value	85		82
Other assets | Derivatives not designated as hedging instruments | Interest rate derivatives | Guaranteed Minimum Withdrawal Benefit and Accumulation Benefit [Member]
Balance sheet location and the gross fair value of derivative instruments, including embedded derivatives, by type of derivative and product
Derivative asset, fair value	1,585		1,484
Other assets | Derivatives not designated as hedging instruments | Equity derivatives | IUL
Balance sheet location and the gross fair value of derivative instruments, including embedded derivatives, by type of derivative and product
Derivative asset, fair value	33		27
Other assets | Derivatives not designated as hedging instruments | Equity derivatives | Guaranteed Minimum Withdrawal Benefit and Accumulation Benefit [Member]
Balance sheet location and the gross fair value of derivative instruments, including embedded derivatives, by type of derivative and product
Derivative asset, fair value	1,642		1,741
Other assets | Derivatives not designated as hedging instruments | Equity derivatives | Stock Market Certificates [Member]
Balance sheet location and the gross fair value of derivative instruments, including embedded derivatives, by type of derivative and product
Derivative asset, fair value	55		73
Other assets | Derivatives not designated as hedging instruments | Credit derivative contract | Guaranteed Minimum Withdrawal Benefit and Accumulation Benefit [Member]
Balance sheet location and the gross fair value of derivative instruments, including embedded derivatives, by type of derivative and product
Derivative asset, fair value			3
Other assets | Derivatives not designated as hedging instruments | Foreign exchange contract | Guaranteed Minimum Withdrawal Benefit and Accumulation Benefit [Member]
Balance sheet location and the gross fair value of derivative instruments, including embedded derivatives, by type of derivative and product
Derivative asset, fair value	2		2
Other assets | Derivatives not designated as hedging instruments | Foreign exchange contract | Foreign Currency [Member]
Balance sheet location and the gross fair value of derivative instruments, including embedded derivatives, by type of derivative and product
Derivative asset, fair value	3		2
Other assets | Derivatives not designated as hedging instruments | Other Contract [Member] | Macro hedge program [Member]
Balance sheet location and the gross fair value of derivative instruments, including embedded derivatives, by type of derivative and product
Derivative asset, fair value	1		4
Other Liabilities [Member] | Derivatives not designated as hedging instruments | Interest rate derivatives | Guaranteed Minimum Withdrawal Benefit and Accumulation Benefit [Member]
Balance sheet location and the gross fair value of derivative instruments, including embedded derivatives, by type of derivative and product
Derivative liability, fair value	1,306		1,672
Other Liabilities [Member] | Derivatives not designated as hedging instruments | Equity derivatives | IUL
Balance sheet location and the gross fair value of derivative instruments, including embedded derivatives, by type of derivative and product
Derivative liability, fair value	11		13
Other Liabilities [Member] | Derivatives not designated as hedging instruments | Equity derivatives | Guaranteed Minimum Withdrawal Benefit and Accumulation Benefit [Member]
Balance sheet location and the gross fair value of derivative instruments, including embedded derivatives, by type of derivative and product
Derivative liability, fair value	2,767		2,918
Other Liabilities [Member] | Derivatives not designated as hedging instruments | Equity derivatives | Stock Market Certificates [Member]
Balance sheet location and the gross fair value of derivative instruments, including embedded derivatives, by type of derivative and product
Derivative liability, fair value	49		66
Other Liabilities [Member] | Derivatives not designated as hedging instruments | Foreign exchange contract | Foreign Currency [Member]
Balance sheet location and the gross fair value of derivative instruments, including embedded derivatives, by type of derivative and product
Derivative liability, fair value	1		0
Other Liabilities [Member] | Derivatives not designated as hedging instruments | Other Contract [Member] | Macro hedge program [Member]
Balance sheet location and the gross fair value of derivative instruments, including embedded derivatives, by type of derivative and product
Derivative liability, fair value	141		139
Policyholder Account Balances, Future Policy Benefits and Claims [Member] | Derivatives not designated as hedging instruments | Equity derivatives | EIA embedded derivatives
Balance sheet location and the gross fair value of derivative instruments, including embedded derivatives, by type of derivative and product
Derivative liability, fair value	5		5
Policyholder Account Balances, Future Policy Benefits and Claims [Member] | Derivatives not designated as hedging instruments | Equity derivatives | IUL embedded derivatives
Balance sheet location and the gross fair value of derivative instruments, including embedded derivatives, by type of derivative and product
Derivative liability, fair value	184		125
Policyholder Account Balances, Future Policy Benefits and Claims [Member] | Derivatives not designated as hedging instruments | GMWB and GMAB Embedded Derivatives [Member] | Guaranteed Minimum Withdrawal Benefit and Accumulation Benefit [Member]
Balance sheet location and the gross fair value of derivative instruments, including embedded derivatives, by type of derivative and product
Derivative liability, fair value	(347)	[1],[2]	(575)	[1],[2]
Deposits [Member] | Derivatives not designated as hedging instruments | Equity derivatives | Stock Market Certificates Embedded Derivatives [Member]
Balance sheet location and the gross fair value of derivative instruments, including embedded derivatives, by type of derivative and product
Derivative liability, fair value	$ 6		$ 7

[1] The fair value of the GMWB and GMAB embedded derivatives was a net asset at June 30, 2014 and December 31, 2013 and the amount is reported as a contra liability.

[2] The fair values of GMWB and GMAB embedded derivatives fluctuate based on changes in equity, interest rate and credit markets.