Deferred Acquisition Costs and Deferred Sales Inducement Costs (Details) - Ameriprise Financial [Member] - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Balances of and changes in DAC [Roll Forward]
Balance, at the beginning of the period	$ 2,698	$ 2,776
Capitalization of acquisition costs	60	71
Amortization, excluding the impact of valuation assumptions review	(512)	(16)
Impact of change in net unrealized (gains) losses on securities	118	(59)
Reclassified to assets held for sale	0	(15)	[1]
Balance, at the end of the period	2,364	2,757
Balances of and changes in DSIC [Roll Forward]
Balance at the beginning of the period	218	251
Amortization, excluding the impact of valuation assumptions review	(36)	0
Impact of change in net unrealized (gains) losses on securities	15	(10)
Balance at the end of the period	$ 197	$ 241

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