Consolidated Statements of Income (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Operating revenues:
Investment management fees	$ 4,054.1	$ 3,599.6	$ 3,127.8
Service and distribution fees	893.1	872.8	771.6
Performance fees	61.1	55.9	41.4
Other	138.8	116.3	109.6
Total operating revenues	5,147.1	4,644.6	4,050.4
Operating expenses:
Employee compensation	1,394.5	1,329.3	1,228.0
Third-party distribution, service and advisory	1,630.7	1,489.2	1,308.2
Marketing	112.1	98.6	102.2
Property, office and technology	336.4	292.8	265.1
General and administrative	396.5	311.3	296.1
Transaction and integration	0	3.2	8.2
Total operating expenses	3,870.2	3,524.4	3,207.8
Operating Income (Loss)	1,276.9	1,120.2	842.6
Other income/(expense):
Equity in earnings of unconsolidated affiliates	32.8	35.5	29.7
Interest and dividend income	13.1	10.0	9.8
Interest expense	(73.1)	(44.6)	(52.3)
Other gains and losses, net	28.1	2.6	8.3
Other income/(expense) of CSIP, net	24.3	2.9	0
Interest and dividend income of CIP	206.5	190.0	258.5
Interest expense of CIP	(133.9)	(123.3)	(168.3)
Other gains/(losses) of CIP, net	20.4	61.9	(97.7)
Income from continuing operations before income taxes	1,395.1	1,255.2	830.6
Income tax provision	(390.6)	(336.9)	(261.4)
Income from continuing operations, net of taxes	1,004.5	918.3	569.2
Income/(loss) from discontinued operations, net of taxes	(3.4)	64.5	18.1
Net income	1,001.1	982.8	587.3
Net (income)/loss attributable to noncontrolling interests in consolidated entities	(13.0)	(42.5)	89.8
Net income attributable to common shareholders	$ 988.1	$ 940.3	$ 677.1
Basic:
Earnings per share from continuing operations (usd per share)	$ 2.28	$ 1.96	$ 1.46
Earnings per share from discontinued operations (usd per share)	$ (0.01)	$ 0.14	$ 0.04
Basic earnings per share (usd per share)	$ 2.27	$ 2.10	$ 1.50
Diluted:
Earnings per share from continuing operations (usd per share)	$ 2.28	$ 1.95	$ 1.45
Earnings per share from discontinued operations (usd per share)	$ (0.01)	$ 0.14	$ 0.04
Diluted earnings per share (usd per share)	$ 2.27	$ 2.10	$ 1.49
Dividends declared per share	$ 0.975	$ 0.8475	$ 0.6400