Consolidated Statements of Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Revenue:
Revenue	$ 8,215	$ 7,272	$ 6,405
Interest and dividends	362	265	193
Other revenue	17	60	34
Total revenue	8,594	7,597	6,632
Interest expense	125	91	75
Net revenue	8,469	7,506	6,557
Operating expenses:
Compensation and benefits	5,993	5,299	4,606
Occupancy and equipment	448	416	396
Communications and data processing	338	324	302
Fund sub-adviser fees	132	99	57
Advertising	92	86	78
Professional and consulting fees	87	68	67
Postage and shipping	55	64	53
Other operating expenses	334	278	252
Total operating expenses	7,479	6,634	5,811
Income before allocations to partners	990	872	746
Allocations to partners:
Limited partners	114	109	100
Subordinated limited partners	127	109	90
General partners	749	654	556
Net income	$ 0	$ 0	$ 0
Income allocated to limited partners per weighted average $1,000 equivalent limited partnership unit outstanding	$ 128.13	$ 121.15	$ 110.55
Weighted average $1,000 equivalent limited partnership units outstanding	889,502	896,566	908,919
Asset-based Fee Revenue [Member]
Revenue:
Revenue	$ 6,075	$ 5,047	$ 3,705
Account and Activity Fee Revenue [Member]
Revenue:
Revenue	678	678	719
Total Fee Revenue [Member]
Revenue:
Revenue	6,753	5,725	4,424
Trade Revenue [Member]
Revenue:
Revenue	$ 1,462	$ 1,547	$ 1,981