Deferred Acquisition Costs and Deferred Sales Inducement Costs (Details) - Ameriprise Financial [Member] - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019		Mar. 31, 2018
Balances of and changes in DAC [Roll Forward]
Balance, at the beginning of the period	$ 2,776		$ 2,676
Capitalization of acquisition costs	71		79
Amortization	(16)		(92)
Impact of change in net unrealized (gains) losses on securities	(59)		55
Reclassified to assets held for sale	(15)	[1]	0
Balance, at the end of the period	2,757		2,718
Balances of and changes in DSIC [Roll Forward]
Balance at the beginning of the period	251		276
Capitalization of sales inducement costs	0		1
Amortization	0		(11)
Impact of change in net unrealized (gains) losses on securities	(10)		9
Balance at the end of the period	$ 241		$ 275

[1] See Note 15 for additional information on held for sale classification.