Offsetting Assets and Liabilities (Liabilities Subject to Netting) (Details 2) - USD ($) $ in Millions		Sep. 30, 2015	Dec. 31, 2014
Derivatives [Abstract]
Gross amounts of recognized liabilities	[1]	$ 4,741	$ 4,688
Securities loaned [Abstract]
Gross amounts of recognized liabilities		353	261
Gross amounts not offset in the consolidated balance sheets [Abstract]
Financial instruments	[2]	(38)	(49)
Securities collateral		(302)	(205)
Net amount		13	7
Repurchase agreements [Abstract]
Gross amounts of recognized liabilities		50	50
Gross amounts not offset in the consolidated balance sheets [Abstract]
Securities collateral		(50)	(50)
Net amount		0	0
Total [Abstract]
Gross amounts of recognized liabilities		3,713	4,266
Gross amounts not offset in the consolidated balance sheets [Abstract]
Financial instruments	[2]	(2,920)	(3,273)
Cash collateral		(42)	(8)
Securities collateral		(708)	(978)
Net amount		43	7
OTC [Member]
Derivatives [Abstract]
Gross amounts of recognized liabilities		2,834	3,723
Gross amounts not offset in the consolidated balance sheets [Abstract]
Financial instruments	[2]	(2,460)	(3,000)
Securities collateral		(356)	(723)
Net amount		18
OTC cleared [Member]
Derivatives [Abstract]
Gross amounts of recognized liabilities		459	232
Gross amounts not offset in the consolidated balance sheets [Abstract]
Financial instruments	[2]	(417)	(224)
Cash collateral		(42)	(8)
Exchange-traded [Member]
Derivatives [Abstract]
Gross amounts of recognized liabilities		17
Gross amounts not offset in the consolidated balance sheets [Abstract]
Financial instruments	[2]	(5)
Net amount		12
Total derivatives [Member]
Derivatives [Abstract]
Gross amounts of recognized liabilities		3,310	3,955
Gross amounts not offset in the consolidated balance sheets [Abstract]
Financial instruments	[2]	(2,882)	(3,224)
Cash collateral		(42)	(8)
Securities collateral		(356)	$ (723)
Net amount		$ 30

[1] The fair value of the Company’s derivative liabilities after considering the effects of master netting arrangements, cash collateral held by the same counterparty and the fair value of net embedded derivatives was $1.8 billion and $1.5 billion at September 30, 2015 and December 31, 2014, respectively. See Note 11 for additional information related to master netting arrangements and cash collateral. See Note 3 for information about derivatives held by consolidated VIEs. See (2) above for additional information related to gross GMWB and GMAB embedded derivatives.

[2] Represents the amount of liabilities that could be offset by assets with the same counterparty under master netting or similar arrangements that management elects not to offset on the Consolidated Balance Sheets.