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CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Millions, unless otherwise specified | 6 Months Ended
--- | ---
Jun. 30, 2013 | Jun. 30, 2012
Operating activities: |  |
Net income | $ 166.4 | $ 228.1
Adjustments to reconcile net income to net cash provided by operating activities: |  |
Depreciation and amortization expense | 91.2 | 72.0
Deferred income tax provision (benefit) | 0.6 | (2.5)
Loss (gain) on sales of property, plant and equipment | 1.0 | (0.2)
Equity in earnings of unconsolidated entities | (0.9) | (1.1)
Dividends received from unconsolidated entities | 0.4 | 0.6
Share-based compensation expense | 14.5 | 11.5
Other | (0.5) | 0.8
Changes in operating assets and liabilities (excluding effect of businesses acquired): |  |
Accounts receivable | (133.2) | (98.6)
Inventories | 62.8 | (183.4)
Prepaid expenses and other assets | 11.3 | 8.8
Accounts payable and other liabilities | 70.3 | (14.8)
Net cash provided by operating activities | 283.9 | 21.2
Investing activities: |  |
Purchases of property, plant and equipment | (74.3) | (86.8)
Acquisitions, net of cash acquired | (794.7) | (82.3)
Proceeds from sales of property, plant and equipment | 0.8 | 2.8
Net proceeds from redemptions of life insurance policies | 6.9 | 0.7
Other | 0.8 | (1.7)
Net cash used in investing activities | (860.5) | (167.3)
Financing activities: |  |
Net short-term debt repayments | (469.3) | (29.4)
Proceeds from long-term debt borrowings | 2,257.9 | 458.0
Principal payments on long-term debt | (1,191.6) | (259.5)
Debt issuance costs | (10.3) |
Payments to noncontrolling interest holders | (1.4) | (1.4)
Dividends paid | (46.0) | (22.5)
Tax (deficit) benefit from share-based compensation | (0.3) | 0.2
Exercise of stock options | 42.4 | 9.7
Net cash provided by financing activities | 581.4 | 155.1
Effect of exchange rate changes on cash | (1.6) |
Increase in cash and cash equivalents | 3.2 | 9.0
Cash and cash equivalents at beginning of year | 97.6 | 84.6
Cash and cash equivalents at end of period | 100.8 | 93.6
Supplemental cash flow information: |  |
Interest paid during the period | 29.9 | 29.0
Income taxes paid during the period | 65.7 | 142.4
Non-cash investing and financing activities: |  |
Debt assumed in connection with acquisitions | $ 529.9 | $ 29.5

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