Sales Inducements (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Amortization charged to income	$ (3)	$ (7)
Changes in deferred sales inducement
Balance, beginning of period	118	186
Sales inducements deferred	0	2
Amortization - Unlock	1	1
Balance, end of period	43	180
Deferred Sales Inducements, Amortization Expense	3	7
Retirement Plans [Member]
Amortization charged to income	(22)
Changes in deferred sales inducement
Deferred Sales Inducements, Amortization Expense	22
Retirement Plans and Individual Life Businesses [Member]
Amortization charged to income	(71)	0
Changes in deferred sales inducement
Deferred Sales Inducements, Amortization Expense	71	0
Individual Life [Member]
Amortization charged to income	(49)
Changes in deferred sales inducement
Deferred Sales Inducements, Amortization Expense	$ 49