Consolidated Statements of Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Revenue:
Revenue	$ 9,894	$ 9,033	$ 8,215
Interest and dividends	207	416	362
Other revenue	64	77	17
Total revenue	10,165	9,526	8,594
Interest expense	102	157	125
Net revenue	10,063	9,369	8,469
Operating expenses:
Compensation and benefits	7,186	6,538	5,993
Occupancy and equipment	522	499	448
Communications and data processing	413	392	338
Fund sub-adviser fees	187	159	132
Professional and consulting fees	109	113	87
Advertising	67	96	92
Postage and shipping	50	56	55
Other operating expenses	244	424	334
Total operating expenses	8,778	8,277	7,479
Income before allocations to partners	1,285	1,092	990
Allocations to partners:
Limited partners	189	166	114
Subordinated limited partners	149	130	127
General partners	947	796	749
Net income	$ 0	$ 0	$ 0
Income allocated to limited partners per weighted average $1,000 equivalent limited partnership unit outstanding	$ 147.81	$ 132.22	$ 128.13
Weighted average $1,000 equivalent limited partnership units outstanding	1,242,781	1,256,459	889,502
Asset-based Fee Revenue [Member]
Revenue:
Revenue	$ 7,515	$ 6,778	$ 6,075
Account and Activity Fee Revenue [Member]
Revenue:
Revenue	660	674	678
Total Fee Revenue [Member]
Revenue:
Revenue	8,175	7,452	6,753
Trade Revenue [Member]
Revenue:
Revenue	$ 1,719	$ 1,581	$ 1,462