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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2021 | Mar. 31, 2020
Cash flows from operating activities: |  |
Net income | $ 151.2 | $ 74.3
Adjustments to reconcile net income to net cash provided by operating activities: |  |
Depreciation | 28.0 | 24.9
Amortization | 1.1 | 1.1
Stock-based compensation | 5.9 | 5.4
Pension settlement charge | 0.6 | 1.4
Contingent consideration payments in excess of acquisition-date liability | (0.4) | (0.1)
Other non-cash items, net | (2.8) | (4.3)
Changes in assets and liabilities | (94.9) | (45.6)
Net cash provided by operating activities | 88.7 | 57.1
Cash flows from investing activities: |  |
Capital expenditures | (54.7) | (32.1)
Other, net | 0.2 | 0.2
Net cash used in investing activities | (54.5) | (31.9)
Cash flows from financing activities: |  |
Repayments of long-term debt | (0.6) | (0.6)
Dividend payments | (12.6) | (11.8)
Proceeds from stock-based compensation awards | 5.8 | 7.5
Employee stock purchase plan contributions | 1.8 | 1.3
Shares purchased under share repurchase program | (137.1) | (115.5)
Shares repurchased for employee tax withholdings | (13.7) | (1.2)
Net cash used in financing activities | (156.4) | (120.3)
Effect of exchange rates on cash | (9.6) | (8.7)
Net decrease in cash and cash equivalents | (131.8) | (103.8)
Cash, including cash equivalents at beginning of period | 615.5 | 439.1
Cash, including cash equivalents at end of period | $ 483.7 | $ 335.3

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