Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Revenues:
Revenues	$ 409,586	$ 404,830	$ 810,406	$ 810,428
Expenses:
Subadvisory, distribution and other asset management costs	46,177	45,209	89,982	90,414
Software royalties and other information processing costs	7,393	7,977	15,521	16,695
Compensation, benefits and other personnel	125,999	127,375	256,334	251,652
Stock-based compensation	5,064	5,323	10,102	10,518
Consulting, outsourcing and professional fees	45,330	50,441	95,536	99,148
Data processing and computer related	22,184	21,133	43,176	41,724
Facilities, supplies and other costs	17,100	17,783	35,845	35,396
Amortization	12,781	12,161	25,460	24,015
Depreciation	7,422	7,138	14,753	14,260
Total expenses	289,450	294,540	586,709	583,822
Income from operations	120,136	110,290	223,697	226,606
Net gain (loss) from investments	231	(139)	1,510	(549)
Interest and dividend income	4,313	3,162	8,570	5,664
Interest expense	(166)	(132)	(323)	(389)
Equity in earnings of unconsolidated affiliate	37,832	41,073	75,149	81,680
Income before income taxes	162,346	154,254	308,603	313,012
Income taxes	35,806	32,577	68,082	51,497
Net income	$ 126,540	$ 121,677	$ 240,521	$ 261,515
Basic earnings per common share (in USD per share)	$ 0.83	$ 0.77	$ 1.58	$ 1.66
Shares used to compute basic earnings per share (in shares)	151,863	157,542	152,587	157,488
Diluted earnings per common share (in USD per share)	$ 0.82	$ 0.75	$ 1.54	$ 1.61
Shares used to compute diluted earnings per share (in shares)	155,165	162,225	155,853	162,825
Dividends declared per common share (in USD per share)	$ 0.33	$ 0.30	$ 0.33	$ 0.30
Asset management, administration and distribution fees
Revenues:
Revenues	$ 324,925	$ 316,508	$ 638,869	$ 632,717
Information processing and software servicing fees
Revenues:
Revenues	$ 84,661	$ 88,322	$ 171,537	$ 177,711