| In millions, except per share items | Dec-31-20 | Dec-31-19 | Dec-31-18 | Dec-31-17 | Dec-31-16 | Dec-31-15 | Dec-31-14 | Dec-31-13 |
| | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K |
| Cash flows from operating activities: | | | | | | | | |
| Net income | 72.7 | 117.0 | 182.8 | 144.2 | 158.1 | 237.6 | 313.3 | 253.0 |
| Adjustments to reconcile net income to net cash from operating activities: | | | | | | | | |
| Depreciation and amortization | 12.6 | 20.0 | 28.3 | 21.0 | 18.4 | 16.1 | 14.8 | 13.7 |
| Write-down of impaired assets | 3.4 | 12.8 | 1.5 | 1.5 | 9.7 | | | |
| Amortization of deferred sales commissions | 1.6 | 1.9 | 3.3 | 4.9 | 23.6 | 43.1 | 64.4 | 57.9 |
| Share-based compensation | 56.8 | 46.6 | 51.6 | 57.7 | 51.5 | 47.5 | 54.1 | 53.2 |
| Investments and derivatives (gain) loss, net of collateral | -17.6 | -25.8 | 26.3 | -17.1 | -12.1 | 12.4 | -7.5 | |
| Net purchases, maturities, and sales of trading and equity securities | 97.6 | -21.6 | -30.2 | -43.7 | | | | |
| Deferred income taxes | -4.7 | -3.0 | 0.8 | 20.5 | 2.0 | -6.2 | 0.7 | -3.0 |
| Pension and postretirement plan benefits | -3.3 | 10.7 | -15.4 | | | | | |
| Net change in equity securities and trading debt securities held by consolidated sponsored funds | -10.9 | 14.4 | 81.1 | -101.5 | -79.1 | | | |
| Other | 2.9 | 1.8 | 1.2 | 3.3 | -2.5 | -4.1 | | |
| Changes in assets and liabilities: | | | | | | | | |
| Customer and other receivables | -2.8 | 54.0 | -25.6 | -3.0 | 92.6 | -3.8 | -75.4 | |
| Payable to investment companies for securities and payable to customers | -8.8 | -64.8 | 76.0 | -26.4 | -97.5 | -6.0 | 17.3 | 24.8 |
| Receivables from funds and separate accounts | 0.3 | 2.9 | 7.6 | 1.5 | 7.2 | 4.7 | -2.6 | -2.6 |
| Other assets | 3.9 | 15.1 | 7.2 | 10.1 | 2.3 | -25.1 | -5.6 | -1.1 |
| Accounts payable and payable to third party brokers | -3.2 | -8.5 | -18.8 | 4.4 | -22.9 | -17.5 | 21.6 | 8.6 |
| Other liabilities | -12.6 | -7.4 | -20.7 | -8.9 | -42.2 | -17.6 | -5.8 | 41.7 |
| Net cash provided by operating activities | 188.0 | 166.0 | 357.0 | 50.9 | 87.9 | 234.0 | 345.0 | 286.9 |
| |
| Cash flows from investing activities: | | | | | | | | |
| Purchases of available for sale and equity method securities | -28.3 | -162.4 | -114.0 | -365.8 | -72.1 | -27.4 | -166.3 | -241.6 |
| Proceeds from sales of available for sale and equity method securities | 15.1 | 19.7 | 1.2 | 160.2 | | | | |
| Proceeds from maturities of available for sale securities | 118.1 | 141.6 | 125.7 | | | | | |
| Additions to property and equipment | -8.6 | -5.8 | -2.6 | -6.8 | -15.7 | -29.6 | -35.6 | -16.9 |
| Proceeds from sales of property and equipment | 2.3 | | | | | | | |
| Net cash provided by (used in) investing activities | 98.7 | -6.9 | 10.3 | -212.4 | 75.9 | -22.6 | -39.1 | 25.6 |
| |
| Cash flows from financing activities: | | | | | | | | |
| Dividends paid | -65.6 | -74.3 | -81.2 | -154.0 | -152.8 | -144.0 | -115.3 | -96.0 |
| Repurchase of common stock | -115.6 | -155.8 | -133.4 | -35.8 | -49.8 | -80.3 | -131.0 | -72.1 |
| Repayment of short-term debt, net of debt issuance costs | | | -94.9 | | | | | |
| Net subscriptions (redemptions, distributions and deconsolidations) of redeemable noncontrolling interests in sponsored funds | 5.8 | 5.8 | -2.3 | 0.9 | | | | |
| Other | -0.1 | -0.2 | | 0.2 | 3.1 | 4.8 | | |
| Net cash used in financing activities | -175.5 | -224.5 | -311.8 | -188.7 | -202.9 | -219.5 | -227.2 | -155.0 |
| Net increase (decrease) in cash and cash equivalents | 111.2 | -65.4 | 55.6 | | | | | |
| |
| Cash paid for: | | | | | | | | |
| Income taxes, net | 39.2 | 53.0 | 59.1 | 85.3 | 77.0 | 152.3 | 165.2 | 124.2 |
| Interest | 5.5 | 5.5 | 7.9 | 10.3 | 10.3 | 10.3 | 10.3 | 10.3 |