Separate Accounts, Death Benefits and Other Insurance Benefit Features Level 4 (Details) - USD ($)	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Movement in Changes in the gross U.S. GMDB, International GMDB/GMIB, and UL Secondary Guarantee Benefits [Roll Forward]
Liability, balance as of January 1	$ 13,929,000,000	$ 13,859,000,000
Incurred	328,000,000	324,000,000
Liabilities for Guarantees on Long-Duration Contracts, Benefits Paid	(224,000,000)	(234,000,000)
Liability balance as of September 30	14,051,000,000	14,173,000,000
Reinsurance recoverable asset, as of January 1	4,451,000,000	4,314,000,000
Incurred	142,000,000	131,000,000
Paid	(34,000,000)	(44,000,000)
Reinsurance recoverable asset, as of September 30	4,559,000,000	4,401,000,000
Minimum Guarantees, Net Amount at Risk [Abstract]
Net Amount at Risk by Product and Guarantee, General Account Value	18,838,000,000
Net Amount at Risk by Product and Guarantee, Net Amount at Risk	2,929,000,000
Separate Accounts, Liability	116,582,000,000		$ 115,665,000,000
Net Amount at Risk by Product and Guarantee, Separate Account Value	79,361,000,000
Separate Accounts by Major Category of Investment [Abstract]
Schedule of Fair Value of Separate Accounts by Major Category of Investment, Fair Value	$ 37,221,000,000		$ 36,925,000,000
Invested in Fixed Income Securities	15.00%		16.00%
Invested in Equity Securities	85.00%		84.00%
Liabilities for Guarantees on Long-Duration Contracts, Other Liability Adjustments	$ 18,000,000	224,000,000
MAV Only [Member]
Minimum Guarantees, Net Amount at Risk [Abstract]
Net Amount at Risk by Product and Guarantee, General Account Value	$ 13,713,000,000
Net Amount at Risk by Product and Guarantee, Weighted Average Attained Age	71 years
With Five Percent Rollup [Member]
Minimum Guarantees, Net Amount at Risk [Abstract]
Net Amount at Risk by Product and Guarantee, General Account Value	$ 1,166,000,000
Net Amount at Risk by Product and Guarantee, Weighted Average Attained Age	71 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	$ 3,484,000,000
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	$ 475,000,000
Net Amount at Risk by Product and Guarantee, Weighted Average Attained Age	73 years
Asset Protection Benefit [Member]
Minimum Guarantees, Net Amount at Risk [Abstract]
Net Amount at Risk by Product and Guarantee, General Account Value	$ 10,416,000,000
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	$ 463,000,000
Net Amount at Risk by Product and Guarantee, Weighted Average Attained Age	70 years
Reset [Member]
Minimum Guarantees, Net Amount at Risk [Abstract]
Net Amount at Risk by Product and Guarantee, General Account Value	$ 2,436,000,000
Net Amount at Risk by Product and Guarantee, Weighted Average Attained Age	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	$ 8,795,000,000
Net Amount at Risk by Product and Guarantee, Weighted Average Attained Age	69 years
Annuitization Benefit [Member]
Movement in Changes in the gross U.S. GMDB, International GMDB/GMIB, and UL Secondary Guarantee Benefits [Roll Forward]
Liability, balance as of January 1	$ 10,516,000,000	10,683,000,000
Incurred	225,000,000	227,000,000
Liabilities for Guarantees on Long-Duration Contracts, Benefits Paid	(197,000,000)	(196,000,000)
Liability balance as of September 30	10,562,000,000	10,938,000,000
Reinsurance recoverable asset, as of January 1	1,392,000,000	1,478,000,000
Incurred	46,000,000	37,000,000
Paid	(11,000,000)	(15,000,000)
Reinsurance recoverable asset, as of September 30	1,427,000,000	1,500,000,000
Minimum Guarantees, Net Amount at Risk [Abstract]
Net Amount at Risk by Product and Guarantee, Net Amount at Risk	479,000,000
Separate Accounts by Major Category of Investment [Abstract]
Liabilities for Guarantees on Long-Duration Contracts, Other Liability Adjustments	18,000,000	224,000,000
Guaranteed Minimum Death Benefit [Member]
Movement in Changes in the gross U.S. GMDB, International GMDB/GMIB, and UL Secondary Guarantee Benefits [Roll Forward]
Liability, balance as of January 1	786,000,000	863,000,000
Incurred	24,000,000	28,000,000
Liabilities for Guarantees on Long-Duration Contracts, Benefits Paid	(27,000,000)	(38,000,000)
Liability balance as of September 30	783,000,000	853,000,000
Reinsurance recoverable asset, as of January 1	432,000,000	523,000,000
Incurred	17,000,000	25,000,000
Paid	(23,000,000)	(29,000,000)
Reinsurance recoverable asset, as of September 30	426,000,000	519,000,000
Minimum Guarantees, Net Amount at Risk [Abstract]
Net Amount at Risk by Product and Guarantee, General Account Value	$ 3,727,000,000
Net Amount at Risk by Product and Guarantee, Weighted Average Attained Age	70 years
Separate Accounts, Liability	$ 37,221,000,000
Separate Accounts by Major Category of Investment [Abstract]
Liabilities for Guarantees on Long-Duration Contracts, Other Liability Adjustments	0	0
Guaranteed Minimum Withdrawal Benefit [Member]
Minimum Guarantees, Net Amount at Risk [Abstract]
Net Amount at Risk by Product and Guarantee, General Account Value	6,400,000,000
Net Amount at Risk by Product and Guarantee, Net Amount at Risk	$ 0
Net Amount at Risk by Product and Guarantee, Weighted Average Attained Age	72 years
Deferred Annuitization [Member] | Guaranteed Minimum Death Benefit [Member]
Minimum Guarantees, Net Amount at Risk [Abstract]
Net Amount at Risk by Product and Guarantee, General Account Value	$ 1,500,000,000
Variable Annuity [Member] | Guaranteed Minimum Death Benefit [Member]
Minimum Guarantees, Net Amount at Risk [Abstract]
Net Amount at Risk by Product and Guarantee, General Account Value	40,948,000,000
Universal Life [Member] | Secondary Guarantees [Member]
Movement in Changes in the gross U.S. GMDB, International GMDB/GMIB, and UL Secondary Guarantee Benefits [Roll Forward]
Liability, balance as of January 1	2,627,000,000	2,313,000,000
Incurred	79,000,000	69,000,000
Liability balance as of September 30	2,706,000,000	2,382,000,000
Reinsurance recoverable asset, as of January 1	2,627,000,000	2,313,000,000
Incurred	79,000,000	69,000,000
Reinsurance recoverable asset, as of September 30	2,706,000,000	2,382,000,000
Separate Accounts by Major Category of Investment [Abstract]
Liabilities for Guarantees on Long-Duration Contracts, Other Liability Adjustments	0	$ 0
MAV Only [Member]
Minimum Guarantees, Net Amount at Risk [Abstract]
Net Amount at Risk by Product and Guarantee, Net Amount at Risk	2,166,000,000
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	326,000,000
With Five Percent Rollup [Member]
Minimum Guarantees, Net Amount at Risk [Abstract]
Net Amount at Risk by Product and Guarantee, Net Amount at Risk	166,000,000
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	53,000,000
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	493,000,000
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	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	104,000,000
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	23,000,000
Asset Protection Benefit [Member]
Minimum Guarantees, Net Amount at Risk [Abstract]
Net Amount at Risk by Product and Guarantee, Net Amount at Risk	127,000,000
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	83,000,000
Lifetime Income Benefit [Member]
Minimum Guarantees, Net Amount at Risk [Abstract]
Net Amount at Risk by Product and Guarantee, Net Amount at Risk	5,000,000
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	5,000,000
Reset [Member]
Minimum Guarantees, Net Amount at Risk [Abstract]
Net Amount at Risk by Product and Guarantee, Net Amount at Risk	7,000,000
Reset [Member] | Annuitization Benefit [Member]
Minimum Guarantees, Net Amount at Risk [Abstract]
Net Amount at Risk by Product and Guarantee, Net Amount at Risk	7,000,000
Return of Net Deposit [Member]
Minimum Guarantees, Net Amount at Risk [Abstract]
Net Amount at Risk by Product and Guarantee, Net Amount at Risk	63,000,000
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	60,000,000
Guaranteed Minimum Death Benefit [Member]
Minimum Guarantees, Net Amount at Risk [Abstract]
Net Amount at Risk by Product and Guarantee, Net Amount at Risk	3,131,000,000
Guaranteed Minimum Death Benefit [Member] | Annuitization Benefit [Member]
Minimum Guarantees, Net Amount at Risk [Abstract]
Net Amount at Risk by Product and Guarantee, Net Amount at Risk	634,000,000
Equity Securities [Member]
Separate Accounts by Major Category of Investment [Abstract]
Schedule of Fair Value of Separate Accounts by Major Category of Investment, Fair Value	34,244,000,000		$ 33,880,000,000
Cash and Cash Equivalents [Member]
Separate Accounts by Major Category of Investment [Abstract]
Schedule of Fair Value of Separate Accounts by Major Category of Investment, Fair Value	$ 2,977,000,000		$ 3,045,000,000