CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Operating activities:
Net income	$ 614.5	$ 182.6	$ 445.7
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	40.7	49.2	62.6
Impairment of goodwill and intangible assets	121.9	513.7	18.0
Deferred income taxes	(2.2)	(104.8)	(4.7)
Stock-based compensation plan expense	68.2	66.7	74.2
Impairment of right-of-use operating asset		1.3	4.7
Gain on sale of Geneva		(16.2)
Investment gains, net	(0.8)	(57.5)	(34.2)
Contributions to pension plans in excess of costs recognized	1.2	(4.6)	1.0
Contingent consideration fair value adjustment		(7.1)	(20.0)
Other, net	(8.4)	(20.5)	(11.1)
Changes in operating assets and liabilities:
OEIC and unit trust receivables and payables	1.0	7.6	0.4
Other assets	(44.1)	(53.4)	(16.4)
Other accruals and liabilities	103.4	88.7	(57.0)
Net operating activities	895.4	645.7	463.2
Sales (purchases) of:
Investment securities, net	(177.1)	134.8	1.5
Property, equipment and software	(10.4)	(17.8)	(37.8)
Investment securities by consolidated seeded investment products, net	(97.4)	(20.2)	(320.8)
Cash paid on settled seed capital hedges, net	(27.0)	(11.6)	(34.9)
Dividends received from equity-method investments	1.2	0.4	0.4
Receipt of contingent consideration payments from sale of Volantis	2.0	2.2	2.3
Receipt of contingent consideration payments from sale of Geneva	25.4	3.2
Proceeds from sale of Geneva		38.4
Net investing activities	(283.3)	129.4	(389.3)
Financing activities:
Proceeds from stock-based compensation plans	12.5	1.0
Purchase of common stock for stock-based compensation plans	(71.8)	(49.1)	(39.0)
Purchase of common stock from Dai-ichi Life and share buyback program	(372.1)	(130.8)	(199.9)
Dividends paid to shareholders	(256.0)	(262.9)	(272.4)
Payment of contingent consideration		(13.8)	(14.1)
Distributions to noncontrolling interests	(0.5)	(0.8)	(1.3)
Third-party sales (purchases) in consolidated seeded investment products, net	100.3	(34.0)	320.8
Principal payments under capital lease obligations	(0.5)	(0.6)	(1.1)
Net financing activities	(588.1)	(491.0)	(207.0)
Cash and cash equivalents:
Effect of foreign exchange rate changes	(13.5)	27.5	13.0
Net change	10.5	311.6	(120.1)
At beginning of period	1,108.1	796.5	916.6
At end of period	1,118.6	1,108.1	796.5
Supplemental cash flow information:
Cash paid for interest	14.6	14.6	14.6
Cash paid for income taxes, net of refunds	217.6	159.0	160.0
Reconciliation of cash and cash equivalents:
Cash and cash equivalents	1,118.6	1,108.1	796.5
Consolidated VIEs
Cash and cash equivalents:
At beginning of period	8.4	62.6
At end of period	11.3	8.4	62.6
Reconciliation of cash and cash equivalents:
Cash and cash equivalents	11.3	8.4	62.6
Consolidated excluding VIEs
Cash and cash equivalents:
At beginning of period	1,099.7	733.9
At end of period	1,107.3	1,099.7	733.9
Reconciliation of cash and cash equivalents:
Cash and cash equivalents	$ 1,107.3	$ 1,099.7	$ 733.9