Consolidated Statements of Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenue:
Revenue	$ 9,033	$ 8,215	$ 7,272
Interest and dividends	416	362	265
Other revenue	77	17	60
Total revenue	9,526	8,594	7,597
Interest expense	157	125	91
Net revenue	9,369	8,469	7,506
Operating expenses:
Compensation and benefits	6,538	5,993	5,299
Occupancy and equipment	499	448	416
Communications and data processing	392	338	324
Fund sub-adviser fees	159	132	99
Professional and consulting fees	113	87	68
Advertising	96	92	86
Postage and shipping	56	55	64
Other operating expenses	424	334	278
Total operating expenses	8,277	7,479	6,634
Income before allocations to partners	1,092	990	872
Allocations to partners:
Limited partners	166	114	109
Subordinated limited partners	130	127	109
General partners	796	749	654
Net income	$ 0	$ 0	$ 0
Income allocated to limited partners per weighted average $1,000 equivalent limited partnership unit outstanding	$ 132.22	$ 128.13	$ 121.15
Weighted average $1,000 equivalent limited partnership units outstanding	1,256,459	889,502	896,566
Asset-based Fee Revenue [Member]
Revenue:
Revenue	$ 6,778	$ 6,075	$ 5,047
Account and Activity Fee Revenue [Member]
Revenue:
Revenue	674	678	678
Total Fee Revenue [Member]
Revenue:
Revenue	7,452	6,753	5,725
Trade Revenue [Member]
Revenue:
Revenue	$ 1,581	$ 1,462	$ 1,547