Goodwill and Other Intangible Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Changes in the carrying amount of goodwill, by segment:
Goodwill, balance at the beginning of the period	$ 1,167	$ 1,158
Foreign currency translation	10	10
Purchase price adjustment	(1)	(1)
Goodwill, balance at the end of the period	1,176	1,167
Impairment of Intangible Assets (Excluding Goodwill)	(2)	5
Advice & Wealth Management [Member]
Changes in the carrying amount of goodwill, by segment:
Goodwill, balance at the beginning of the period	279	279
Goodwill, balance at the end of the period	279	279
Asset Management [Member]
Changes in the carrying amount of goodwill, by segment:
Goodwill, balance at the beginning of the period	797	788
Foreign currency translation	10	10
Purchase price adjustment	(1)	(1)
Goodwill, balance at the end of the period	806	797
Protection [Member]
Changes in the carrying amount of goodwill, by segment:
Goodwill, balance at the beginning of the period	91	91
Goodwill, balance at the end of the period	$ 91	$ 91