Deferred Acquisition Costs and Deferred Sales Inducement Costs (Details) - Ameriprise Financial [Member] - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2019		Jun. 30, 2018
Balances of and changes in DAC [Roll Forward]
Balance, at the beginning of the period	$ 2,776		$ 2,676
Capitalization of acquisition costs	150		164
Amortization	(74)		(155)
Impact of change in net unrealized (gains) losses on securities	(123)		83
Reclassified to assets held for sale	(16)	[1]	0
Balance, at the end of the period	2,713		2,768
Balances of and changes in DSIC [Roll Forward]
Balance at the beginning of the period	251		276
Capitalization of sales inducement costs	1		1
Amortization	(6)		(20)
Impact of change in net unrealized (gains) losses on securities	(19)		14
Balance at the end of the period	$ 227		$ 271

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