Revenue from Contracts with Customers - Disaggregated Revenue (Details) - USD ($) $ in Millions		3 Months Ended				9 Months Ended
		Sep. 30, 2021		Sep. 30, 2020		Sep. 30, 2021		Sep. 30, 2020
Revenue disaggregated by segment
Total revenues		$ 2,906		$ 3,013		$ 9,681		$ 8,769
Banking and deposit interest expense		(3)		(10)		(10)		(53)
Total net revenues		2,903		3,003		9,671		8,716
Management and financial advice fees
Revenue disaggregated by segment
Revenue from contracts with customers		2,367		1,893		6,720		5,365
Distribution fees
Revenue disaggregated by segment
Revenue from contracts with customers		458		400		1,368		1,239
Advice and Wealth Management Segment
Revenue disaggregated by segment
Total net revenues		1,787		1,448		5,130		4,250
Asset Management Segment
Revenue disaggregated by segment
Total net revenues		903		726		2,583		2,054
Retirement and Protection Solutions Segment
Revenue disaggregated by segment
Total net revenues		712		671		2,073		1,976
Corporate and Other Segment
Revenue disaggregated by segment
Total net revenues		113		132		370		413
Reportable segments
Revenue disaggregated by segment
Revenue from contracts with customers		3,012		2,433		8,672		7,089
Revenue from other sources	[1]	901		896		2,668		2,665
Total revenues		3,913		3,329		11,340		9,754
Banking and deposit interest expense		(3)		(10)		(11)		(55)
Total net revenues		3,910		3,319		11,329		9,699
Reportable segments | Management and financial advice fees
Revenue disaggregated by segment
Revenue from contracts with customers		2,179		1,726		6,177		4,892
Reportable segments | Asset Management: Retail
Revenue disaggregated by segment
Revenue from contracts with customers		587		466		1,685		1,330
Reportable segments | Asset Management: Institutional
Revenue disaggregated by segment
Revenue from contracts with customers		143		122		397		308
Reportable segments | Advisory fees
Revenue disaggregated by segment
Revenue from contracts with customers		1,189		907		3,330		2,558
Reportable segments | Financial planning fees
Revenue disaggregated by segment
Revenue from contracts with customers		91		81		272		248
Reportable segments | Transaction and other fees
Revenue disaggregated by segment
Revenue from contracts with customers		169		150		493		448
Reportable segments | Distribution fees
Revenue disaggregated by segment
Revenue from contracts with customers		785		658		2,338		2,049
Reportable segments | Mutual funds
Revenue disaggregated by segment
Revenue from contracts with customers		289		245		844		714
Reportable segments | Insurance and annuity
Revenue disaggregated by segment
Revenue from contracts with customers		400		322		1,188		1,001
Reportable segments | Other products
Revenue disaggregated by segment
Revenue from contracts with customers		96		91		306		334
Reportable segments | Other revenues
Revenue disaggregated by segment
Revenue from contracts with customers		48		49		157		148
Reportable segments | Advice and Wealth Management Segment
Revenue disaggregated by segment
Revenue from contracts with customers		1,981		1,600		5,706		4,688
Revenue from other sources	[1]	70		77		211		264
Total revenues		2,051		1,677		5,917		4,952
Banking and deposit interest expense		(3)		(10)		(10)		(53)
Total net revenues		2,048		1,667		5,907		4,899
Reportable segments | Advice and Wealth Management Segment | Management and financial advice fees
Revenue disaggregated by segment
Revenue from contracts with customers		1,374		1,077		3,878		3,070
Reportable segments | Advice and Wealth Management Segment | Advisory fees
Revenue disaggregated by segment
Revenue from contracts with customers		1,189		907		3,330		2,558
Reportable segments | Advice and Wealth Management Segment | Financial planning fees
Revenue disaggregated by segment
Revenue from contracts with customers		91		81		272		248
Reportable segments | Advice and Wealth Management Segment | Transaction and other fees
Revenue disaggregated by segment
Revenue from contracts with customers		94		89		276		264
Reportable segments | Advice and Wealth Management Segment | Distribution fees
Revenue disaggregated by segment
Revenue from contracts with customers		561		479		1,682		1,480
Reportable segments | Advice and Wealth Management Segment | Mutual funds
Revenue disaggregated by segment
Revenue from contracts with customers		219		186		638		540
Reportable segments | Advice and Wealth Management Segment | Insurance and annuity
Revenue disaggregated by segment
Revenue from contracts with customers		246		202		738		606
Reportable segments | Advice and Wealth Management Segment | Other products
Revenue disaggregated by segment
Revenue from contracts with customers		96		91		306		334
Reportable segments | Advice and Wealth Management Segment | Other revenues
Revenue disaggregated by segment
Revenue from contracts with customers		46		44		146		138
Reportable segments | Asset Management Segment
Revenue disaggregated by segment
Revenue from contracts with customers		908		739		2,608		2,082
Revenue from other sources	[1]	7				14		11
Total revenues		915		739		2,622		2,093
Total net revenues		915		739		2,622		2,093
Reportable segments | Asset Management Segment | Management and financial advice fees
Revenue disaggregated by segment
Revenue from contracts with customers		787		635		2,247		1,777
Reportable segments | Asset Management Segment | Asset Management: Retail
Revenue disaggregated by segment
Revenue from contracts with customers		587		466		1,685		1,330
Reportable segments | Asset Management Segment | Asset Management: Institutional
Revenue disaggregated by segment
Revenue from contracts with customers		143		122		397		308
Reportable segments | Asset Management Segment | Transaction and other fees
Revenue disaggregated by segment
Revenue from contracts with customers		57		47		165		139
Reportable segments | Asset Management Segment | Distribution fees
Revenue disaggregated by segment
Revenue from contracts with customers		120		104		352		303
Reportable segments | Asset Management Segment | Mutual funds
Revenue disaggregated by segment
Revenue from contracts with customers		70		59		206		174
Reportable segments | Asset Management Segment | Insurance and annuity
Revenue disaggregated by segment
Revenue from contracts with customers		50		45		146		129
Reportable segments | Asset Management Segment | Other revenues
Revenue disaggregated by segment
Revenue from contracts with customers		1				9		2
Reportable segments | Retirement and Protection Solutions Segment
Revenue disaggregated by segment
Revenue from contracts with customers		122		94		356		316
Revenue from other sources	[1]	712		687		2,073		1,979
Total revenues		834		781		2,429		2,295
Total net revenues		834		781		2,429		2,295
Reportable segments | Retirement and Protection Solutions Segment | Management and financial advice fees
Revenue disaggregated by segment
Revenue from contracts with customers		18		14		52		45
Reportable segments | Retirement and Protection Solutions Segment | Transaction and other fees
Revenue disaggregated by segment
Revenue from contracts with customers		18		14		52		45
Reportable segments | Retirement and Protection Solutions Segment | Distribution fees
Revenue disaggregated by segment
Revenue from contracts with customers		104		75		304		266
Reportable segments | Retirement and Protection Solutions Segment | Insurance and annuity
Revenue disaggregated by segment
Revenue from contracts with customers		104		75		304		266
Reportable segments | Corporate and Other Segment
Revenue disaggregated by segment
Revenue from contracts with customers		1				2		3
Revenue from other sources	[1]	112		132		370		411
Total revenues		113		132		372		414
Banking and deposit interest expense						(1)		(2)
Total net revenues		113		132		371		412
Reportable segments | Corporate and Other Segment | Other revenues
Revenue disaggregated by segment
Revenue from contracts with customers		1				2		3
Intersegment eliminations
Revenue disaggregated by segment
Total net revenues		(395)	[2]	(342)	[2]	(1,173)	[3]	(1,006)	[3]
Intersegment eliminations | Advice and Wealth Management Segment
Revenue disaggregated by segment
Total net revenues		(261)		(219)		(777)		(649)
Intersegment eliminations | Asset Management Segment
Revenue disaggregated by segment
Total net revenues		(12)		(13)		(39)		(39)
Intersegment eliminations | Retirement and Protection Solutions Segment
Revenue disaggregated by segment
Total net revenues		(122)		(110)		(356)		(319)
Intersegment eliminations | Corporate and Other Segment
Revenue disaggregated by segment
Total net revenues		0		0		(1)		1
Segment reconciling items
Revenue disaggregated by segment
Total net revenues		(612)		26		(485)		23
Non-operating
Revenue disaggregated by segment
Revenue from other sources	[1]	(605)		27		(472)		28
Total revenues		(605)		27		(472)		28
Total net revenues		(605)		27		(472)		28
Total
Revenue disaggregated by segment
Revenue from other sources	[1]	296		923		2,196		2,693
Total revenues		3,308		3,356		10,868		9,782
Banking and deposit interest expense		(3)		(10)		(11)		(55)
Total net revenues		3,305		3,346		10,857		9,727
Eliminations
Revenue disaggregated by segment
Total net revenues		(402)		(343)		(1,186)		(1,011)
Total Segments after intersegment eliminations | Reportable segments
Revenue disaggregated by segment
Total net revenues		3,515		2,977		10,156		8,693
Non-operating | Eliminations
Revenue disaggregated by segment
Total net revenues		$ (7)		$ (1)		$ (13)		$ (5)

[1] Revenues not included in the scope of the revenue from contracts with customers standard. The amounts primarily consist of revenue associated with insurance and annuity products or financial instruments.

[2] Represents the elimination of intersegment revenues recognized for the three months ended September 30, 2021 and 2020 in each segment as follows: Advice & Wealth Management ($261 million and $219 million, respectively); Asset Management ($12 million and $13 million, respectively); Retirement & Protection Solutions ($122 million and $110 million, respectively); and Corporate & Other (nil and nil, respectively).

[3] Represents the elimination of intersegment revenues recognized for the nine months ended September 30, 2021 and 2020 in each segment as follows: Advice & Wealth Management ($777 million and $649 million, respectively); Asset Management ($39 million and $39 million, respectively); Retirement & Protection Solutions ($356 million and $319 million, respectively); and Corporate & Other ($1 million and $(1) million, respectively).