Supplemental Cash Flow Disclosures - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Supplemental Cash Flow Information [Abstract]
Income taxes paid, net	$ 36	$ 34
Leased assets obtained in exchange for operating lease liabilities	44	31
Non-cash Investing Activity:
Partnership commitments not yet remitted	0	2
Exchange of an investment that resulted in a realized gain and an increase to amortized cost	17
Ameriprise Financial [Member]
Supplemental Cash Flow Information [Abstract]
Interest Paid	30	55
Variable Interest Entity, Primary Beneficiary [Member]
Supplemental Cash Flow Information [Abstract]
Interest Paid	$ 11	$ 17