Deferred Acquisition Costs and Deferred Sales Inducement Costs (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Balances of and changes in DAC
Benefit related to the write-off of the deferred reinsurance liability			$ (27)
Expense related to the loss recognition on LTC business			58
Ameriprise Financial [Member]
Balances of and changes in DAC
Balance at the beginning of the period	$ 2,676	$ 2,648	2,730
Capitalization of acquisition costs	318	302	360	[1]
Amortization, excluding the impact of valuation assumptions review	(355)	(279)	(334)
Amortization, impact of valuation assumptions review	33	12	(81)	[2]
Impact of change in net unrealized (gains) losses on securities	104	(7)	(27)
Balance at the end of the period	2,776	2,676	2,648
Balances of and changes in DSIC
Balance at the beginning of the period	276	302	335
Capitalization of sales inducement costs	2	4	5
Amortization, excluding the impact of valuation assumptions review	(43)	(35)	(42)
Amortization, impact of valuation assumptions review	0	(1)	4
Impact of change in net unrealized (gains) losses on securities	16	6	0
Balance at the end of the period	$ 251	$ 276	$ 302

[1] Includes a $27 million benefit related to the write-off of the deferred reinsurance liability in connection with the loss recognition on LTC business. The benefit was reported in distribution expenses on the Consolidated Statements of Operations.

[2] Includes a $58 million expense related to the loss recognition on LTC business.