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v3.5.0.2

Consolidated Statements of Cash Flows - USD ($) $ in Millions | 12 Months Ended
--- | ---
May 31, 2016 | May 31, 2015 | May 31, 2014
Operating activities |  |  |
Net income | $ 756.8 | $ 674.9 | $ 627.5
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |
Depreciation and amortization on property and equipment and intangible assets | 115.1 | 106.6 | 105.0
Amortization of premiums and discounts on available-for-sale securities | 75.7 | 76.2 | 70.3
Stock-based compensation costs | 34.6 | 31.4 | 26.3
Provision/(benefit) for deferred income taxes | 7.1 | (4.1) | (4.9)
Provision for allowance for doubtful accounts | 2.5 | 1.6 | 2.5
Net realized gains on sales of available-for-sale securities | (0.1) | (0.3) | (0.6)
Changes in operating assets and liabilities: |  |  |
Interest receivable | 1.8 | (1.6) | (3.9)
Accounts receivable | (37.5) | (28.2) | (18.2)
Prepaid expenses and other current assets | (5.0) | (8.5) | 22.5
Accounts payable and other current liabilities | 63.3 | 51.1 | 45.1
Net change in other long-term assets and liabilities | 3.9 | (3.9) | 9.3
Net cash provided by operating activities | 1,018.2 | 895.2 | 880.9
Investing activities |  |  |
Purchases of available-for-sale securities | (12,572.2) | (34,020.4) | (29,850.5)
Proceeds from sales and maturities of available-for-sale securities | 11,984.3 | 33,719.5 | 30,080.6
Net change in funds held for clients’ money market securities and other cash equivalents | 927.6 | 149.1 | (441.5)
Purchases of property and equipment | (97.7) | (102.8) | (84.1)
Acquisition of businesses, net of cash acquired | (296.1) | (27.1) | (9.3)
Purchases of other assets | (9.0) | (3.3) | (11.3)
Net cash used in by investing activities | (63.1) | (285.0) | (316.1)
Financing activities |  |  |
Net change in client fund obligations | (304.8) | 93.0 | 127.4
Dividends paid | (606.5) | (551.8) | (510.6)
Repurchases of common shares | (107.9) | (182.4) | (249.7)
Equity activity related to stock-based awards | 25.6 | 48.5 | 113.3
Net cash used in financing activities | (993.6) | (592.7) | (519.6)
(Decrease)/increase in cash and cash equivalents | (38.5) | 17.5 | 45.2
Cash and cash equivalents, beginning of fiscal year | 170.0 | 152.5 | 107.3
Cash and cash equivalents, end of fiscal year | $ 131.5 | $ 170.0 | $ 152.5

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