Investments (OCI rollforward) (Details 7) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Rollforward of the net unrealized securities gains (losses) on Available-for-Sale securities included in accumulated other comprehensive income
Net unrealized securities gains (losses) arising during the period, net of tax	$ 345		$ (971)		$ 588
Reclassification of net securities (gains) losses included in net income	(25)		(5)		(5)
Impact of other adjustments	(189)		319		(154)
Ameriprise Financial [Member] | Net unrealized securities gains/losses, gross [Member]
Rollforward of the net unrealized securities gains (losses) on Available-for-Sale securities included in accumulated other comprehensive income
Balance at the beginning of the period	1,016		2,017		1,350
Net unrealized securities gains (losses) arising during the period	529	[1]	(1,484)	[1]	911	[1]
Reclassification of net securities (gains) losses included in net income	(39)		(7)		(7)
Impact of other adjustments	(290)		490		(237)
Balance at the end of the period	1,216		1,016		2,017
Ameriprise Financial [Member] | Deferred income tax [Member]
Rollforward of the net unrealized securities gains (losses) on Available-for-Sale securities included in accumulated other comprehensive income
Balance at the beginning of the period	(361)		(705)		(467)
Net unrealized securities (gains) losses arising during the period	(184)	[1]	513	[1]	(323)	[1]
Reclassification of net securities gains (losses) included in net income	14		2		2
Impact of other adjustments	101		(171)		83
Balance at the end of the period	(430)		(361)		(705)
Ameriprise Financial [Member] | Net unrealized securities gains/losses, net of tax [Member]
Rollforward of the net unrealized securities gains (losses) on Available-for-Sale securities included in accumulated other comprehensive income
Balance at the beginning of the period	655	[2]	1,312	[2]	883
Net unrealized securities gains (losses) arising during the period, net of tax	345	[1]	(971)	[1]	588	[1]
Reclassification of net securities (gains) losses included in net income	(25)		(5)		(5)
Impact of other adjustments	(189)		319		(154)
Balance at the end of the period	786	[2]	655	[2]	1,312	[2]
Noncredit related impairments on securities and net unrealized securities losses on previously impaired securities, included in accumulated other comprehensive income	$ 5		$ (4)		$ (18)

[1] Includes other-than-temporary impairment losses on Available-for-Sale securities related to factors other than credit that were recognized in other comprehensive income (loss) during the period.

[2] Includes $5 million, $(4) million and $(18) million of noncredit related impairments on securities and net unrealized securities gains (losses) on previously impaired securities at December 31, 2014, 2013 and 2012, respectively.