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Consolidated Statements of Cash Flows - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Cash Flows from Operating Activities:      
Net income $ 668.6 $ 449.6 $ 436.8
Adjustments to reconcile net income to net cash provided by operating activities:      
Depreciation, depletion, and amortization of intangibles 391.4 358.0 356.5
Amortization of deferred financing costs 10.0 7.8 7.8
Share-based compensation expense 20.6 19.7 18.2
Deferred income tax (benefit) provision (84.5) (4.0) 1.7
Net loss on impairment of assets 13.5    
Pension and post retirement benefits expense, net of contributions (20.4) (30.5) 31.2
Other, net 3.0 1.4 (19.8)
(Increase) decrease in assets —      
Accounts receivable (115.1) (3.6) 9.5
Inventories (21.0) (25.7) (11.9)
Prepaid expenses and other current assets (5.2)   4.1
Increase (decrease) in liabilities —      
Accounts payable 41.0 16.6 (37.3)
Accrued liabilities 8.4 (3.2) (15.5)
Federal and state income tax payable / receivable (54.2) 20.8 (12.7)
Net cash provided by operating activities 856.1 806.9 768.6
Cash Flows from Investing Activities:      
Additions to property, plant, and equipment [1] (343.0) (274.3) (314.5)
Proceeds from sale of a business     23.0
Acquisitions of businesses, net of cash acquired (273.8) (485.4)  
Additions to other long term assets (7.8) (10.4) (12.3)
Proceeds from asset disposals 16.6 0.5 1.5
Other, net (1.1)   4.2
Net cash used for investing activities (609.1) (769.6) (298.1)
Cash Flows from Financing Activities:      
Proceeds from issuance of debt 997.8 385.0  
Repayments of debt and capital lease obligations (1,011.9) (37.5) (47.6)
Financing costs paid (6.8) (2.0)  
Common stock dividends paid (237.6) (216.1) (200.8)
Repurchases of common stock   (100.3) (154.7)
Shares withheld to cover employee restricted stock taxes (10.8) (11.2) (8.7)
Other, net (0.1) (0.1) 0.6
Net cash provided by (used for) financing activities (269.4) 17.8 (411.2)
Net (decrease) increase in cash and cash equivalents (22.4) 55.1 59.3
Cash and cash equivalents, beginning of year 239.3 184.2 124.9
Cash and cash equivalents, end of year $ 216.9 $ 239.3 $ 184.2
[1] Includes “Additions to property, plant, and equipment” and excludes cash used for “Acquisitions of businesses, net of cash acquired” as reported on our Consolidated Statements of Cash Flows.