Revenue from Contract with Customer Revenue from Contract with Customer (Details) - USD ($) $ in Millions		3 Months Ended								12 Months Ended
		Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disaggregation of Revenue [Line Items]
Less: Banking and deposit interest expense										$ 136	$ 89	$ 48
Total segment net revenues										12,710	12,694	11,993
Total net revenues		$ 3,287	$ 3,317	$ 3,245	$ 3,118	$ 3,179	$ 3,292	$ 3,196	$ 3,168	12,967	12,835	12,132
Consolidation, Eliminations [Member]
Disaggregation of Revenue [Line Items]
Total segment net revenues										1,410	1,431	1,426
Total before eliminations [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers										9,604	9,336	8,845
Revenue from other sources	[1]									4,917	5,025	4,764
Total segment gross revenues										14,521	14,361	13,609
Less: Banking and deposit interest expense										144	95	51
Total segment net revenues										14,377	14,266	13,558
Total before eliminations [Member] | Management and financial advice fees [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers										6,371	6,120	5,766
Total before eliminations [Member] | Management and financial advice fees [Member] | Asset Management: Retail [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers										1,783	1,874	1,851
Total before eliminations [Member] | Management and financial advice fees [Member] | Asset Management: Institutional [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers										495	453	495
Total before eliminations [Member] | Management and financial advice fees [Member] | Advisory fees [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers										3,156	2,865	2,494
Total before eliminations [Member] | Management and financial advice fees [Member] | Financial Planning Fees [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers										330	318	297
Total before eliminations [Member] | Management and financial advice fees [Member] | Transaction and other fees [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers										607	610	629
Total before eliminations [Member] | Distribution fees [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers										3,052	3,041	2,913
Total before eliminations [Member] | Distribution fees [Member] | Mutual Funds [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers										963	989	1,054
Total before eliminations [Member] | Distribution fees [Member] | Insurance and annuity products [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers										1,409	1,430	1,384
Total before eliminations [Member] | Distribution fees [Member] | Other products [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers										680	622	475
Total before eliminations [Member] | Other revenues [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers										181	175	166
Total Segment [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers										9,604	9,336	8,845
Revenue from other sources	[1]									4,652	4,867	4,610
Total segment gross revenues										14,256	14,203	13,455
Less: Banking and deposit interest expense										144	95	51
Total segment net revenues										14,112	14,108	13,404
Total net revenues										12,710	12,694	11,993
Total Segment [Member] | Consolidation, Eliminations [Member]
Disaggregation of Revenue [Line Items]
Total segment net revenues										1,402	1,414	1,411
Total Segment [Member] | Management and financial advice fees [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers										6,371	6,120	5,766
Total Segment [Member] | Management and financial advice fees [Member] | Asset Management: Retail [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers										1,783	1,874	1,851
Total Segment [Member] | Management and financial advice fees [Member] | Asset Management: Institutional [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers										495	453	495
Total Segment [Member] | Management and financial advice fees [Member] | Advisory fees [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers										3,156	2,865	2,494
Total Segment [Member] | Management and financial advice fees [Member] | Financial Planning Fees [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers										330	318	297
Total Segment [Member] | Management and financial advice fees [Member] | Transaction and other fees [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers										607	610	629
Total Segment [Member] | Distribution fees [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers										3,052	3,041	2,913
Total Segment [Member] | Distribution fees [Member] | Mutual Funds [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers										963	989	1,054
Total Segment [Member] | Distribution fees [Member] | Insurance and annuity products [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers										1,409	1,430	1,384
Total Segment [Member] | Distribution fees [Member] | Other products [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers										680	622	475
Total Segment [Member] | Other revenues [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers										181	175	166
Advice & Wealth Management [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers										6,299	5,950	5,412
Revenue from other sources	[1]									436	328	252
Total segment gross revenues										6,735	6,278	5,664
Less: Banking and deposit interest expense										136	89	48
Total segment net revenues										6,599	6,189	5,616
Total net revenues										5,675	5,237	4,663
Advice & Wealth Management [Member] | Consolidation, Eliminations [Member]
Disaggregation of Revenue [Line Items]
Total segment net revenues										924	952	953
Advice & Wealth Management [Member] | Management and financial advice fees [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers										3,841	3,538	3,153
Advice & Wealth Management [Member] | Management and financial advice fees [Member] | Advisory fees [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers										3,156	2,865	2,494
Advice & Wealth Management [Member] | Management and financial advice fees [Member] | Financial Planning Fees [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers										330	318	297
Advice & Wealth Management [Member] | Management and financial advice fees [Member] | Transaction and other fees [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers										355	355	362
Advice & Wealth Management [Member] | Distribution fees [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers										2,281	2,241	2,095
Advice & Wealth Management [Member] | Distribution fees [Member] | Mutual Funds [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers										726	729	765
Advice & Wealth Management [Member] | Distribution fees [Member] | Insurance and annuity products [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers										875	890	855
Advice & Wealth Management [Member] | Distribution fees [Member] | Other products [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers										680	622	475
Advice & Wealth Management [Member] | Other revenues [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers										177	171	164
Asset Management [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers										2,879	2,953	3,008
Revenue from other sources	[1]									34	58	64
Total segment gross revenues										2,913	3,011	3,072
Total segment net revenues										2,913	3,011	3,072
Total net revenues										2,858	2,961	3,025
Asset Management [Member] | Consolidation, Eliminations [Member]
Disaggregation of Revenue [Line Items]
Total segment net revenues										55	50	47
Asset Management [Member] | Management and financial advice fees [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers										2,467	2,517	2,548
Asset Management [Member] | Management and financial advice fees [Member] | Asset Management: Retail [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers										1,783	1,874	1,851
Asset Management [Member] | Management and financial advice fees [Member] | Asset Management: Institutional [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers										495	453	495
Asset Management [Member] | Management and financial advice fees [Member] | Transaction and other fees [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers										189	190	202
Asset Management [Member] | Distribution fees [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers										408	433	458
Asset Management [Member] | Distribution fees [Member] | Mutual Funds [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers										237	260	289
Asset Management [Member] | Distribution fees [Member] | Insurance and annuity products [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers										171	173	169
Asset Management [Member] | Other revenues [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers										4	3	2
Annuities [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers										384	389	384
Revenue from other sources	[1]									2,075	2,087	2,115
Total segment gross revenues										2,459	2,476	2,499
Total segment net revenues										2,459	2,476	2,499
Total net revenues										2,092	2,120	2,148
Annuities [Member] | Consolidation, Eliminations [Member]
Disaggregation of Revenue [Line Items]
Total segment net revenues										367	356	351
Annuities [Member] | Management and financial advice fees [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers										55	57	57
Annuities [Member] | Management and financial advice fees [Member] | Transaction and other fees [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers										55	57	57
Annuities [Member] | Distribution fees [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers										329	332	327
Annuities [Member] | Distribution fees [Member] | Insurance and annuity products [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers										329	332	327
Protection [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers										36	37	36
Revenue from other sources	[1]									1,011	1,059	947
Total segment gross revenues										1,047	1,096	983
Total segment net revenues										1,047	1,096	983
Total net revenues										985	1,035	921
Protection [Member] | Consolidation, Eliminations [Member]
Disaggregation of Revenue [Line Items]
Total segment net revenues										62	61	62
Protection [Member] | Management and financial advice fees [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers										8	8	8
Protection [Member] | Management and financial advice fees [Member] | Transaction and other fees [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers										8	8	8
Protection [Member] | Distribution fees [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers										28	28	28
Protection [Member] | Distribution fees [Member] | Insurance and annuity products [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers										28	28	28
Protection [Member] | Other revenues [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers											1
Corporate Segment [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers										6	7	5
Revenue from other sources	[1]									1,096	1,335	1,232
Total segment gross revenues										1,102	1,342	1,237
Less: Banking and deposit interest expense										8	6	3
Total segment net revenues										1,094	1,336	1,234
Total net revenues										1,100	1,341	1,236
Corporate Segment [Member] | Consolidation, Eliminations [Member]
Disaggregation of Revenue [Line Items]
Total segment net revenues										(6)	(5)	(2)
Corporate Segment [Member] | Distribution fees [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers										6	7	5
Corporate Segment [Member] | Distribution fees [Member] | Insurance and annuity products [Member]
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers										6	7	5
Non-Operating [Member]
Disaggregation of Revenue [Line Items]
Revenue from other sources	[1]									265	158	154
Total segment gross revenues										265	158	154
Total segment net revenues										265	158	154
Total net revenues										257	141	139
Non-Operating [Member] | Consolidation, Eliminations [Member]
Disaggregation of Revenue [Line Items]
Total segment net revenues										$ 8	$ 17	$ 15

[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.