Deferred Acquisition Costs and Deferred Sales Inducement Costs (Details) - Ameriprise Financial [Member] - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Balances of and changes in DAC [Roll Forward]
Balance, at the beginning of the period	$ 2,648	$ 2,730	[1]
Capitalization of acquisition costs	220	274	[2]
Amortization, excluding the impact of valuations assumptions review	(201)	(279)
Amortization, impact of valuation assumptions review	12	(81)
Impact of change in net unrealized securities (gains) losses	(18)	(105)
Balance, at the end of the period	2,661	2,539	[1]
Benefit related to the write-off of the deferred reinsurance liability		27
Balances of and changes in DSIC [Roll Forward]
Balance at the beginning of the period	302	335
Capitalization of sales inducement costs	3	4
Amortization, excluding the impact of valuation assumptions review	(26)	(32)
Amortization, impact of valuation assumptions review	(1)	4
Impact of change in net unrealized securities (gains) losses	1	(14)
Balance at the end of the period	$ 279	$ 297

[1] DAC balances were restated for the correction of commission expense accrual for certain insurance and annuity products in the fourth quarter of 2016. See Note 1 in the 2016 10-K.

[2] Includes a $27 million benefit related to the write-off of the deferred reinsurance liability in connection with the loss recognition on LTC business.