Separate Accounts, Death Benefits and Other Insurance Benefit Features Level 4 (Details) - USD ($)	3 Months Ended	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2017	Jun. 30, 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		590,000,000	591,000,000
Liabilities for Guarantees on Long-Duration Contracts, Benefits Paid		(453,000,000)	(464,000,000)
Liability balance as of September 30	$ 14,156,000,000	14,156,000,000	14,446,000,000
Reinsurance recoverable asset, as of January 1		4,451,000,000	4,314,000,000
Incurred	220,000,000	220,000,000	227,000,000
Paid	(70,000,000)	(70,000,000)	(84,000,000)
Reinsurance recoverable asset, as of September 30	4,601,000,000	4,601,000,000	4,457,000,000
Minimum Guarantees, Net Amount at Risk [Abstract]
Net Amount at Risk by Product and Guarantee, General Account Value	18,736,000,000	18,736,000,000
Net Amount at Risk by Product and Guarantee, Net Amount at Risk	2,871,000,000	2,871,000,000
Separate Accounts, Liability	116,746,000,000	116,746,000,000		$ 115,665,000,000
Net Amount at Risk by Product and Guarantee, Separate Account Value	79,764,000,000	79,764,000,000
Separate Accounts by Major Category of Investment [Abstract]
Schedule of Fair Value of Separate Accounts by Major Category of Investment, Fair Value	$ 36,982,000,000	$ 36,982,000,000		$ 36,925,000,000
Invested in Fixed Income Securities	15.00%	15.00%		16.00%
Invested in Equity Securities	85.00%	85.00%		84.00%
Liabilities for Guarantees on Long-Duration Contracts, Other Liability Adjustments		$ 90,000,000	460,000,000
MAV Only [Member]
Minimum Guarantees, Net Amount at Risk [Abstract]
Net Amount at Risk by Product and Guarantee, General Account Value	$ 13,641,000,000	$ 13,641,000,000
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	1,155,000,000	$ 1,155,000,000
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	3,465,000,000	$ 3,465,000,000
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	$ 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	10,243,000,000	$ 10,243,000,000
Net Amount at Risk by Product and Guarantee, Weighted Average Attained Age		70 years
Lifetime Income Benefit [Member]
Minimum Guarantees, Net Amount at Risk [Abstract]
Net Amount at Risk by Product and Guarantee, General Account Value	459,000,000	$ 459,000,000
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	2,437,000,000	$ 2,437,000,000
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	8,793,000,000	$ 8,793,000,000
Net Amount at Risk by Product and Guarantee, Weighted Average Attained Age		71 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		408,000,000	392,000,000
Liabilities for Guarantees on Long-Duration Contracts, Benefits Paid		(401,000,000)	(398,000,000)
Liability balance as of September 30	10,613,000,000	10,613,000,000	11,137,000,000
Reinsurance recoverable asset, as of January 1		1,392,000,000	1,478,000,000
Incurred	49,000,000	49,000,000	37,000,000
Paid	(27,000,000)	(27,000,000)	(33,000,000)
Reinsurance recoverable asset, as of September 30	1,414,000,000	1,414,000,000	1,482,000,000
Minimum Guarantees, Net Amount at Risk [Abstract]
Net Amount at Risk by Product and Guarantee, Net Amount at Risk	467,000,000	467,000,000
Separate Accounts by Major Category of Investment [Abstract]
Liabilities for Guarantees on Long-Duration Contracts, Other Liability Adjustments		90,000,000	460,000,000
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		33,000,000	41,000,000
Liabilities for Guarantees on Long-Duration Contracts, Benefits Paid		(52,000,000)	(66,000,000)
Liability balance as of September 30	767,000,000	767,000,000	838,000,000
Reinsurance recoverable asset, as of January 1		432,000,000	523,000,000
Incurred	22,000,000	22,000,000	32,000,000
Paid	(43,000,000)	(43,000,000)	(51,000,000)
Reinsurance recoverable asset, as of September 30	411,000,000	411,000,000	504,000,000
Minimum Guarantees, Net Amount at Risk [Abstract]
Net Amount at Risk by Product and Guarantee, General Account Value	3,686,000,000	$ 3,686,000,000
Net Amount at Risk by Product and Guarantee, Weighted Average Attained Age		71 years
Separate Accounts, Liability	36,982,000,000	$ 36,982,000,000
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	6,300,000,000	6,300,000,000
Net Amount at Risk by Product and Guarantee, Net Amount at Risk	$ 0	0
Net Amount at Risk by Product and Guarantee, Weighted Average Attained Age	73 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	$ 1,600,000,000	1,600,000,000
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	40,668,000,000	40,668,000,000
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		149,000,000	158,000,000
Liability balance as of September 30	2,776,000,000	2,776,000,000	2,471,000,000
Reinsurance recoverable asset, as of January 1		2,627,000,000	2,313,000,000
Incurred	149,000,000	149,000,000	158,000,000
Reinsurance recoverable asset, as of September 30	2,776,000,000	2,776,000,000	2,471,000,000
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	2,109,000,000	2,109,000,000
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	316,000,000	316,000,000
With Five Percent Rollup [Member]
Minimum Guarantees, Net Amount at Risk [Abstract]
Net Amount at Risk by Product and Guarantee, Net Amount at Risk	154,000,000	154,000,000
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	49,000,000	49,000,000
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	504,000,000	504,000,000
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	79,000,000	79,000,000
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	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	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	114,000,000	114,000,000
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	76,000,000	76,000,000
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	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	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	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	6,000,000	6,000,000
Return of Net Deposit [Member]
Minimum Guarantees, Net Amount at Risk [Abstract]
Net Amount at Risk by Product and Guarantee, Net Amount at Risk	59,000,000	59,000,000
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	56,000,000	56,000,000
Guaranteed Minimum Death Benefit [Member]
Minimum Guarantees, Net Amount at Risk [Abstract]
Net Amount at Risk by Product and Guarantee, Net Amount at Risk	3,056,000,000	3,056,000,000
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	610,000,000	610,000,000
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	34,135,000,000	34,135,000,000		$ 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	$ 2,847,000,000	$ 2,847,000,000		$ 3,045,000,000