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Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2020 | Mar. 31, 2019
Statement Of Cash Flows [Abstract] |  |
Net income | $ 8.6 | $ 11.2
Adjustments to reconcile net income to net cash provided by (used in) operating activities: |  |
Deferred income tax expense (benefit) | 4.1 | (1.9)
Depreciation and amortization | 11.8 | 14.4
Amortization of debt issuance costs and debt discount | 0.3 | 0.3
Net periodic pension and postretirement cost | 0.8 | 1.3
Non-cash share-based compensation | 12.5 | 6.0
Other | 0.8 | 0.5
Changes in operating assets and liabilities excluding effects of acquisitions and divestitures: |  |
Trade and other receivables | (4.5) | (3.8)
Prepaid expenses and other current assets | (7.5) | (7.0)
Accounts payable and other accrued expenses | (2.0) | (5.8)
Deferred revenue | 2.1 | (0.2)
Employee compensation and benefits | (26.4) | (16.9)
Accrued interest |  | 3.4
Accrued taxes | 0.9 | (8.1)
Other assets and liabilities | (0.1) | (2.2)
Net cash provided by (used in) operating activities | 1.4 | (8.8)
Cash Flows from Investing Activities |  |
Purchase of customer trust funds marketable securities | (24.6) | (143.3)
Proceeds from sale and maturity of customer trust funds marketable securities | 49.5 | 49.8
Expenditures for property, plant, and equipment | (4.9) | (4.0)
Expenditures for software and technology | (10.7) | (9.9)
Acquisition costs, net of cash acquired |  | (10.2)
Net cash provided by (used in) investing activities | 9.3 | (117.6)
Cash Flows from Financing Activities |  |
Increase in customer trust funds obligations, net | 480.8 | 1,916.1
Proceeds from issuance of common stock under share-based compensation plans | 11.4 | 20.1
Repayment of long-term debt obligations | (2.7) | (1.7)
Net cash provided by financing activities | 489.5 | 1,934.5
Effect of exchange rate changes on cash, restricted cash, and equivalents | (14.5) | 3.9
Net increase in cash, restricted cash, and equivalents | 485.7 | 1,812.0
Cash, restricted cash, and equivalents at beginning of period | 1,658.6 | 1,106.3
Cash, restricted cash, and equivalents at end of period | 2,144.3 | 2,918.3
Reconciliation of cash, restricted cash, and equivalents to the condensed consolidated balance sheets |  |
Cash and equivalents | 255.3 | 206.3
Restricted cash and equivalents included in customer trust funds | $ 1,889.0 | $ 2,712.0
Restricted Cash and Cash Equivalents, Current, Asset, Statement of Financial Position [Extensible List] | us-gaap:FundsHeldForClients | us-gaap:FundsHeldForClients
Cash, restricted cash, and equivalents at end of period | $ 2,144.3 | $ 2,918.3

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