Deferred Policy Acquisition Costs and Present Value of Future Profits Level 4 (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Movement Analysis of Deferred Policy Acquisition Costs and Present Value of Future Profits [Roll Forward]
Balance, beginning of period	$ 2,161,000,000	$ 5,725,000,000	$ 6,556,000,000
Deferred Policy Acquisition Costs and Present Value of Future Profits, Additions	1,364,000,000	1,330,000,000	1,639,000,000
Deferred Policy Acquisition Cost, Amortization Expense, Effect of Adjustments to Estimated Gross Profit	(136,000,000)	(1,086,000,000)	(144,000,000)
Adjustments to unrealized gains and losses on securities available-for-sale and other	(27,000,000)	(122,000,000)	364,000,000
Effect of currency translation	0	86,000,000	118,000,000
Balance, end of period	1,823,000,000	2,161,000,000	5,725,000,000
Retirement Plans and Individual Life Businesses [Member]
Movement Analysis of Deferred Policy Acquisition Costs and Present Value of Future Profits [Roll Forward]
Deferred Policy Acquisition Cost, Amortization Expense	0	(2,229,000,000)	0
Retirement Plans [Member]
Movement Analysis of Deferred Policy Acquisition Costs and Present Value of Future Profits [Roll Forward]
Adjustments to unrealized gains and losses on securities available-for-sale and other	0
Deferred Policy Acquisition Costs, Period Increase (Decrease)	0
Individual Life [Member]
Movement Analysis of Deferred Policy Acquisition Costs and Present Value of Future Profits [Roll Forward]
Adjustments to unrealized gains and losses on securities available-for-sale and other	0
Deferred Policy Acquisition Costs, Period Increase (Decrease)	0
Variable Annuity [Member]
Movement Analysis of Deferred Policy Acquisition Costs and Present Value of Future Profits [Roll Forward]
Deferred Policy Acquisition Cost, Amortization Expense, Effect of Adjustments to Estimated Gross Profit	(887)
Continuing Operations [Member]
Movement Analysis of Deferred Policy Acquisition Costs and Present Value of Future Profits [Roll Forward]
Deferred Policy Acquisition Cost, Amortization Expense	$ (1,593,000,000)	$ (1,615,000,000)	$ (1,844,000,000)