Deferred Acquisition Costs and Deferred Sales Inducement Costs (Details) - Ameriprise Financial [Member] - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Balances of and changes in DAC [Roll Forward]
Balance, at the beginning of the period	$ 2,698	$ 2,776
Capitalization of acquisition costs	108	150
Amortization, excluding the impact of valuation assumptions review	(264)	(74)
Impact of change in net unrealized (gains) losses on securities	(43)	(123)
Reclassified to assets held for sale	0	(16)	[1]
Balance, at the end of the period	2,499	2,713
Balances of and changes in DSIC [Roll Forward]
Balance at the beginning of the period	218	251
Deferred Sale Inducement Cost, Capitalization	1	1
Amortization, excluding the impact of valuation assumptions review	(18)	(6)
Impact of change in net unrealized (gains) losses on securities	(5)	(19)
Balance at the end of the period	$ 196	$ 227

[1] On April 2, 2019, the Company announced it signed a definitive agreement with a subsidiary of American Family Mutual Holding Company (American Family Insurance) for the sale of AAH, a business unit of Ameriprise Financial. The Company met the requirements to classify assets related to AAH as held for sale as of June 30, 2019.