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Consolidated Statements of Cash Flows - USD ($) $ in Millions | 6 Months Ended
--- | ---
Jun. 30, 2024 | Jun. 30, 2023
Cash Flows from Operating Activities: |  |
Net income | $ 345.9 | $ 392.8
Adjustments to reconcile net income to net cash provided by operating activities: |  |
Depreciation, depletion, and amortization of intangibles | 256.9 | 257.4
Amortization of deferred financing costs | 1.2 | 1.1
Share-based compensation expense | 29.2 | 24.8
Deferred income tax benefit | (5.9) | (5.4)
Net loss on asset disposals | 7.4 | 3.2
Pension and post-retirement benefits expense, net of contributions | 3.1 | 9.8
Other, net | 22.2 | 12.7
(Increase) decrease in assets - |  |
Accounts receivable | (112.0) | 7.8
Inventories | (16.4) | (14.9)
Prepaid expenses and other current assets | (142.3) | (17.5)
Increase (decrease) in liabilities - |  |
Accounts payable | 53.1 | (32.2)
Accrued liabilities | 92.3 | (43.0)
Federal and state income taxes payable/receivable | 4.0 | 43.7
Net cash provided by operating activities | 538.7 | 640.3
Cash Flows from Investing Activities: |  |
Additions to property, plant, and equipment | (321.7) | (238.8)
Additions to other long-term assets | (1.7) | (2.2)
Proceeds from asset disposals | 0.6 | 0.4
Purchases of available-for-sale debt securities | (62.6) | (55.7)
Proceeds from sales of available-for-sale debt securities | 1.5 | 1.2
Proceeds from maturities of available-for-sale debt securities | 60.1 | 52.9
Net cash used for investing activities | (323.8) | (242.2)
Cash Flows from Financing Activities: |  |
Repayments of debt and finance lease obligations | (1.0) | (0.9)
Common stock dividends paid | (224.2) | (224.5)
Shares withheld to cover employee restricted stock taxes | (24.1) | (15.6)
Net cash used for financing activities | (249.3) | (241.0)
Net (decrease) increase in cash and cash equivalents | (34.4) | 157.1
Cash and cash equivalents, beginning of period | 648.0 | 320.0
Cash and cash equivalents, end of period | $ 613.6 | $ 477.1

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