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v3.5.0.2

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions | 6 Months Ended
--- | ---
Jun. 30, 2016 | Jun. 30, 2015
Operating activities |  |
Net income | $ 132.1 | $ 111.8
Adjustments to reconcile net income to net cash provided by operating activities |  |
Depreciation and amortization | 100.5 | 100.6
Deferred income taxes | 20.9 | 10.1
Stock-based compensation | 10.5 | 7.7
Pensions and other postretirement benefits, net of contributions | (2.4) | 0.2
Loss on disposal of property, plant and equipment, net | 1.1 | 0.8
Changes in operating assets and liabilities |  |
Accounts receivable | (100.6) | (110.7)
Inventories | 6.3 | 8.3
Accounts payable and accrued expenses | 74.8 | 59.9
Deferred revenue | (7.5) | (20.4)
Other assets and liabilities | (52.2) | (14.0)
Net cash provided by operating activities | 183.5 | 154.3
Investing activities |  |
Purchases of property, plant and equipment | (105.7) | (91.4)
Proceeds from sale of property, plant and equipment | 0.6 | 0.1
Proceeds from government grants | 2.8 | 0.0
Final distribution of Reserve Yield Plus Fund | 1.0 | 0.0
Net cash used in investing activities | (101.3) | (91.3)
Financing activities |  |
Payments of long-term debt and capital lease obligations | (3.8) | (17.3)
Proceeds from issuance of long-term debt | 29.6 | 12.9
Purchase of treasury stock | (5.0) | (2.7)
Employee stock option exercises | 0.1 | 0.4
Net cash provided by (used in) financing activities | 20.9 | (6.7)
Effect of exchange rate changes on cash | 2.8 | (4.2)
Net increase in cash and cash equivalents | 105.9 | 52.1
Cash and cash equivalents at beginning of period | 282.5 | 249.2
Cash and cash equivalents at end of period | 388.4 | 301.3
Supplemental cash flow information |  |
Interest paid | 43.9 | 47.2
Income taxes paid, net of refunds | $ 38.1 | $ 7.9

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