Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Revenues:
Asset management, administration and distribution fees	$ 256,748	$ 236,191	$ 503,516	$ 461,262
Information processing and software servicing fees	73,699	75,828	144,352	145,006
Transaction-based and trade execution fees	7,298	6,796	15,321	14,933
Total revenues	337,745	318,815	663,189	621,201
Expenses:
Subadvisory, distribution and other asset management costs	40,872	37,244	79,389	71,256
Software royalties and other information processing costs	8,057	8,417	15,566	16,970
Brokerage commissions	5,431	5,119	11,403	11,098
Compensation, benefits and other personnel	98,999	92,470	193,185	186,894
Stock-based compensation	3,859	2,872	7,609	5,695
Consulting, outsourcing and professional fees	36,969	33,404	72,597	68,337
Data processing and computer related	14,527	13,378	27,927	25,998
Facilities, supplies and other costs	16,659	17,366	33,718	33,218
Amortization	10,611	9,584	20,969	18,798
Depreciation	5,843	5,331	11,838	10,915
Total expenses	241,827	225,185	474,201	449,179
Income from operations	95,918	93,630	188,988	172,022
Net (loss) gain from investments	(38)	391	212	527
Interest and dividend income	755	721	1,724	1,498
Interest expense	(114)	(114)	(227)	(227)
Equity in earnings of unconsolidated affiliates	37,289	34,226	71,322	66,117
Gain on sale of subsidiary	0	0	2,791	5,582
Income before income taxes	133,810	128,854	264,810	245,519
Income taxes	47,570	46,041	93,959	87,886
Net income	$ 86,240	$ 82,813	$ 170,851	$ 157,633
Basic earnings per common share	$ 0.52	$ 0.49	$ 1.03	$ 0.93
Shares used to compute basic earnings per share	166,152	168,606	166,423	168,956
Diluted earnings per common share	$ 0.51	$ 0.48	$ 1.00	$ 0.91
Shares used to compute diluted earnings per share	169,973	172,304	170,338	173,066
Dividends declared per common share	$ 0.24	$ 0.22	$ 0.24	$ 0.22