Separate Accounts, Death Benefits, and Other Insurance Benefits Level 4 (Details) - USD ($)		12 Months Ended
		Dec. 31, 2015		Dec. 31, 2014	Dec. 31, 2013
Movement in Changes in U.S. GMDB/GMWB, International GMDB/GMIB, and UL Secondary Guarantee Benefits [Roll Forward]
Deferred Policy Acquisition Cost, Foreign Currency Translation Adjustment		$ 0		$ 0	$ (86,000,000)
Reinsurance Recoverables on Paid Losses		119,000,000		133,000,000
Minimum Guarantees, Net Amount at Risk [Abstract]
Net Amount at Risk by Product and Guarantee, General Account Value	[1],[2]	19,981,000,000
Net Amount at Risk by Product and Guarantee, Net Amount at Risk	[2],[3]	3,567,000,000
Separate Accounts, Liability		120,123,000,000	[1]	134,702,000,000
Net Amount at Risk by Product and Guarantee, Separate Account Value	[1]	79,700,000,000
Schedule of Fair Value of Separate Accounts [Abstract]
Schedule of Fair Value of Separate Accounts by Major Category of Investment, Fair Value		$ 40,423,000,000		$ 48,852,000,000
Invested in Equity Securities		83.00%		83.00%
Invested in Fixed Income Securities		17.00%		17.00%
JAPAN
Movement in Changes in U.S. GMDB/GMWB, International GMDB/GMIB, and UL Secondary Guarantee Benefits [Roll Forward]
Liabilities, as of Jan. 1		$ 0		$ 272,000,000
Liabilities for Guarantees on Long-Duration Contracts, Incurred Benefits	[4]			(13,000,000)
Liabilities for Guarantees on Long-Duration Contracts, Benefits Paid				15,000,000
Liabilities for Guarantees on Long Duration Contracts, Business Disposition Impact				254,000,000
Deferred Policy Acquisition Cost, Foreign Currency Translation Adjustment				10,000,000
Liabilities, as of Dec. 31				0	272,000,000
Reinsurance Recoverable, as of Jan. 1		0		23,000,000
Reinsurance Recoverable, as of Dec. 31				0	23,000,000
Universal Life [Member]
Movement in Changes in U.S. GMDB/GMWB, International GMDB/GMIB, and UL Secondary Guarantee Benefits [Roll Forward]
Liabilities, as of Jan. 1		2,041,000,000
Liabilities for Guarantees on Long-Duration Contracts, Incurred Benefits		(272,000,000)
Liabilities, as of Dec. 31		2,313,000,000		2,041,000,000
Reinsurance Recoverable, as of Jan. 1		2,041,000,000
Reinsurance Recoverable, as of Dec. 31		2,313,000,000		2,041,000,000
Reinsurance Recoverable [Member] | JAPAN
Movement in Changes in U.S. GMDB/GMWB, International GMDB/GMIB, and UL Secondary Guarantee Benefits [Roll Forward]
Deferred Policy Acquisition Cost, Foreign Currency Translation Adjustment				1,000,000
Reinsurance Recoverables on Unpaid Losses	[4]			7,000,000
Reinsurance Recoverables on Paid Losses				4,000,000
reinsurance recoverable asset impact of business disposition				27,000,000
Reinsurance Recoverable [Member] | Universal Life [Member]
Movement in Changes in U.S. GMDB/GMWB, International GMDB/GMIB, and UL Secondary Guarantee Benefits [Roll Forward]
Reinsurance Recoverables on Unpaid Losses	[4]	272,000,000
Equity Securities [Member]
Schedule of Fair Value of Separate Accounts [Abstract]
Schedule of Fair Value of Separate Accounts by Major Category of Investment, Fair Value		36,970,000,000		44,786,000,000
Cash and Cash Equivalents [Member]
Schedule of Fair Value of Separate Accounts [Abstract]
Schedule of Fair Value of Separate Accounts by Major Category of Investment, Fair Value		3,453,000,000		4,066,000,000
Guaranteed Minimum Withdrawal Benefit [Member]
Minimum Guarantees, Net Amount at Risk [Abstract]
Net Amount at Risk by Product and Guarantee, General Account Value		$ 7,000,000,000
Guaranteed Minimum Withdrawal Benefit [Member] | UNITED STATES
Minimum Guarantees, Net Amount at Risk [Abstract]
Net Amount at Risk by Product and Guarantee, Weighted Average Attained Age		71 years
With Five Percent Rollup and EPB [Member]
Minimum Guarantees, Net Amount at Risk [Abstract]
Net Amount at Risk by Product and Guarantee, General Account Value	[1],[2]	$ 487,000,000
Net Amount at Risk by Product and Guarantee, Weighted Average Attained Age	[2]	72 years
With Earnings Protection Benefit Rider (EPB) [Member]
Minimum Guarantees, Net Amount at Risk [Abstract]
Net Amount at Risk by Product and Guarantee, General Account Value	[1],[2]	$ 3,697,000,000
Net Amount at Risk by Product and Guarantee, Weighted Average Attained Age	[2]	69 years
With Five Percent Rollup [Member]
Minimum Guarantees, Net Amount at Risk [Abstract]
Net Amount at Risk by Product and Guarantee, General Account Value	[1],[2]	$ 1,257,000,000
Net Amount at Risk by Product and Guarantee, Weighted Average Attained Age	[2]	71 years
Annuitization Benefit [Member]
Minimum Guarantees, Net Amount at Risk [Abstract]
Net Amount at Risk by Product and Guarantee, Net Amount at Risk	[2],[3]	$ 654,000,000
Annuitization Benefit [Member] | UNITED STATES
Minimum Guarantees, Net Amount at Risk [Abstract]
Net Amount at Risk by Product and Guarantee, Net Amount at Risk		0
MAV Only [Member]
Minimum Guarantees, Net Amount at Risk [Abstract]
Net Amount at Risk by Product and Guarantee, General Account Value	[1],[2]	$ 14,540,000,000
Net Amount at Risk by Product and Guarantee, Weighted Average Attained Age	[2]	70 years
Guaranteed Minimum Death Benefit [Member]
Minimum Guarantees, Net Amount at Risk [Abstract]
Net Amount at Risk by Product and Guarantee, General Account Value	[1]	$ 3,822,000,000
Separate Accounts, Liability	[1]	40,423,000,000
Guaranteed Minimum Death Benefit [Member] | UNITED STATES
Movement in Changes in U.S. GMDB/GMWB, International GMDB/GMIB, and UL Secondary Guarantee Benefits [Roll Forward]
Liabilities, as of Jan. 1	[5]	812,000,000		849,000,000
Liabilities for Guarantees on Long-Duration Contracts, Incurred Benefits	[4],[5]	(163,000,000)		(73,000,000)
Liabilities for Guarantees on Long-Duration Contracts, Benefits Paid	[5]	112,000,000		110,000,000
Liabilities for Guarantees on Long Duration Contracts, Business Disposition Impact	[5]			0
Liabilities, as of Dec. 31	[5]	863,000,000		812,000,000	849,000,000
Reinsurance Recoverable, as of Jan. 1	[5]	481,000,000		533,000,000
Reinsurance Recoverables on Unpaid Losses	[4],[5]	131,000,000
Reinsurance Recoverable, as of Dec. 31	[5]	523,000,000		481,000,000	533,000,000
Minimum Guarantees, Net Amount at Risk [Abstract]
Net Amount at Risk by Product and Guarantee, General Account Value	[1],[6]	$ 44,245,000,000
Net Amount at Risk by Product and Guarantee, Weighted Average Attained Age	[6]	69 years
Guaranteed Minimum Death Benefit [Member] | Reinsurance Recoverable [Member] | UNITED STATES
Movement in Changes in U.S. GMDB/GMWB, International GMDB/GMIB, and UL Secondary Guarantee Benefits [Roll Forward]
Reinsurance Recoverables on Unpaid Losses	[4],[5]			33,000,000
Reinsurance Recoverables on Paid Losses	[5]	$ 89,000,000		85,000,000
reinsurance recoverable asset impact of business disposition	[5]			0
Reset [Member]
Minimum Guarantees, Net Amount at Risk [Abstract]
Net Amount at Risk by Product and Guarantee, General Account Value	[1],[7]	$ 2,582,000,000
Net Amount at Risk by Product and Guarantee, Weighted Average Attained Age	[7]	70 years
Return of Net Deposit [Member]
Minimum Guarantees, Net Amount at Risk [Abstract]
Net Amount at Risk by Product and Guarantee, General Account Value	[1],[8]	$ 9,459,000,000
Net Amount at Risk by Product and Guarantee, Weighted Average Attained Age	[8]	68 years
Secondary Guarantees [Member] | Universal Life [Member]
Movement in Changes in U.S. GMDB/GMWB, International GMDB/GMIB, and UL Secondary Guarantee Benefits [Roll Forward]
Liabilities, as of Jan. 1		$ 2,041,000,000		1,802,000,000
Liabilities for Guarantees on Long-Duration Contracts, Incurred Benefits	[4]			(239,000,000)
Liabilities for Guarantees on Long Duration Contracts, Business Disposition Impact				0
Liabilities, as of Dec. 31				2,041,000,000	1,802,000,000
Reinsurance Recoverable, as of Jan. 1		2,041,000,000		1,802,000,000
Reinsurance Recoverable, as of Dec. 31				2,041,000,000	$ 1,802,000,000
Secondary Guarantees [Member] | Reinsurance Recoverable [Member] | Universal Life [Member]
Movement in Changes in U.S. GMDB/GMWB, International GMDB/GMIB, and UL Secondary Guarantee Benefits [Roll Forward]
Reinsurance Recoverables on Unpaid Losses	[4]			239,000,000
reinsurance recoverable asset impact of business disposition				$ 0
Asset Protection Benefit [Member]
Minimum Guarantees, Net Amount at Risk [Abstract]
Net Amount at Risk by Product and Guarantee, General Account Value		$ 11,707,000,000
Net Amount at Risk by Product and Guarantee, Weighted Average Attained Age		69 years
Lifetime Income Benefit [Member]
Minimum Guarantees, Net Amount at Risk [Abstract]
Net Amount at Risk by Product and Guarantee, General Account Value		$ 516,000,000
Net Amount at Risk by Product and Guarantee, Weighted Average Attained Age		69 years
Lifetime Income Benefit [Member]
Minimum Guarantees, Net Amount at Risk [Abstract]
Net Amount at Risk by Product and Guarantee, Net Amount at Risk		$ 9,000,000
Lifetime Income Benefit [Member] | Annuitization Benefit [Member]
Minimum Guarantees, Net Amount at Risk [Abstract]
Net Amount at Risk by Product and Guarantee, Net Amount at Risk		9,000,000
Asset Protection Benefit [Member]
Minimum Guarantees, Net Amount at Risk [Abstract]
Net Amount at Risk by Product and Guarantee, Net Amount at Risk		519,000,000
Asset Protection Benefit [Member] | Annuitization Benefit [Member]
Minimum Guarantees, Net Amount at Risk [Abstract]
Net Amount at Risk by Product and Guarantee, Net Amount at Risk		346,000,000
Guaranteed Minimum Death Benefit [Member] | UNITED STATES
Minimum Guarantees, Net Amount at Risk [Abstract]
Net Amount at Risk by Product and Guarantee, Net Amount at Risk	[3],[6]	4,198,000,000
Guaranteed Minimum Death Benefit [Member] | Annuitization Benefit [Member] | UNITED STATES
Minimum Guarantees, Net Amount at Risk [Abstract]
Net Amount at Risk by Product and Guarantee, Net Amount at Risk	[3],[6]	1,105,000,000
Return of Net Deposit [Member]
Minimum Guarantees, Net Amount at Risk [Abstract]
Net Amount at Risk by Product and Guarantee, Net Amount at Risk	[3],[8]	71,000,000
Return of Net Deposit [Member] | Annuitization Benefit [Member]
Minimum Guarantees, Net Amount at Risk [Abstract]
Net Amount at Risk by Product and Guarantee, Net Amount at Risk	[3],[8]	64,000,000
MAV Only [Member]
Minimum Guarantees, Net Amount at Risk [Abstract]
Net Amount at Risk by Product and Guarantee, Net Amount at Risk	[2],[3]	2,743,000,000
MAV Only [Member] | Annuitization Benefit [Member]
Minimum Guarantees, Net Amount at Risk [Abstract]
Net Amount at Risk by Product and Guarantee, Net Amount at Risk	[2],[3]	477,000,000
With Five Percent Rollup [Member]
Minimum Guarantees, Net Amount at Risk [Abstract]
Net Amount at Risk by Product and Guarantee, Net Amount at Risk	[2],[3]	227,000,000
With Five Percent Rollup [Member] | Annuitization Benefit [Member]
Minimum Guarantees, Net Amount at Risk [Abstract]
Net Amount at Risk by Product and Guarantee, Net Amount at Risk	[2],[3]	77,000,000
Reset [Member]
Minimum Guarantees, Net Amount at Risk [Abstract]
Net Amount at Risk by Product and Guarantee, Net Amount at Risk	[3],[7]	32,000,000
Reset [Member] | Annuitization Benefit [Member]
Minimum Guarantees, Net Amount at Risk [Abstract]
Net Amount at Risk by Product and Guarantee, Net Amount at Risk	[3],[7]	32,000,000
With Earnings Protection Benefit Rider (EPB) [Member]
Minimum Guarantees, Net Amount at Risk [Abstract]
Net Amount at Risk by Product and Guarantee, Net Amount at Risk	[2],[3]	490,000,000
With Earnings Protection Benefit Rider (EPB) [Member] | Annuitization Benefit [Member]
Minimum Guarantees, Net Amount at Risk [Abstract]
Net Amount at Risk by Product and Guarantee, Net Amount at Risk	[2],[3]	77,000,000
With Five Percent Rollup and EPB [Member]
Minimum Guarantees, Net Amount at Risk [Abstract]
Net Amount at Risk by Product and Guarantee, Net Amount at Risk	[2],[3]	107,000,000
With Five Percent Rollup and EPB [Member] | Annuitization Benefit [Member]
Minimum Guarantees, Net Amount at Risk [Abstract]
Net Amount at Risk by Product and Guarantee, Net Amount at Risk	[2],[3]	$ 23,000,000

[1] AV includes the contract holder’s investment in the separate account and the general account.

[2] MAV GMDB is the greatest of current AV, net premiums paid and the highest AV on any anniversary before age 80 years (adjusted for withdrawals).

[3] NAR is defined as the guaranteed benefit in excess of the current AV. RNAR represents NAR reduced for reinsurance. NAR and RNAR are highly sensitive to equity markets movements and increase when equity markets decline.

[4] [2]Includes the portion of assessments established as additions to reserves as well as changes in estimates affecting the reserves.

[5] [1]These liability balances include all GMDB benefits, plus the life-contingent portion of GMWB benefits in excess of the return of the GRB. GMWB benefits up to the return of the GRB are embedded derivatives held at fair value and are excluded from these balances.

[6] Some variable annuity contracts with GMDB also have a life-contingent GMWB that may provide for benefits in excess of the return of the GRB. Such contracts included in this amount have $7.0 billion of total account value and weighted average attained age of 71 years. There is no NAR or retained NAR related to these contracts.

[7] Reset GMDB is the greatest of current AV, net premiums paid and the most recent five to seven year anniversary AV before age 80 years (adjusted for withdrawals).

[8] ROP GMDB is the greater of current AV or net premiums paid.