Consolidated Statements of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Cash Flows from Operating Activities:
Net income	$ 332.6	$ 294.1
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, depletion, and amortization of intangibles and deferred financing costs	273.7	296.5
Share-based compensation expense	13.7	11.6
Deferred income tax provision	1.2	17.4
Pension and postretirement benefits expense, net of contributions	24.0	19.2
(Gain) Loss on disposal of assets	(3.0)	2.1
Non-cash DeRidder restructuring items	(3.7)	6.3
Other, net	(9.7)	(1.7)
Increase in assets —
Accounts receivable	(37.5)	(75.0)
Inventories	(31.0)	(24.9)
Prepaid expenses and other current assets	(16.8)	(27.9)
Increase (decrease) in liabilities —
Accounts payable	(14.1)	(13.0)
Accrued liabilities	5.2	21.8
Federal and state income taxes payable / receivable	7.4	30.2
Net cash provided by operating activities	542.0	556.7
Cash Flows from Investing Activities:
Additions to property, plant, and equipment	(217.9)	(254.9)
Proceeds from sale of a business	23.0	0.0
Acquisition of business, net of cash acquired	0.0	(20.3)
Additions to other long-term assets	(9.2)	(11.6)
Other, net	1.3	3.2
Net cash used for investing activities	(202.8)	(283.6)
Cash Flows from Financing Activities:
Repayments of debt and capital lease obligations	(30.7)	(590.6)
Proceeds from issuance of debt	0.0	398.9
Financing costs paid	0.0	(3.2)
Common stock dividends paid	(147.3)	(118.0)
Repurchases of common stock	(98.1)	0.0
Proceeds from exercise of stock options	0.0	3.7
Excess tax benefits from stock-based awards	5.6	11.8
Shares withheld to cover employee restricted stock taxes	(7.4)	(12.1)
Other, net	0.7	(0.3)
Net cash used for financing activities	(277.2)	(309.8)
Net increase (decrease) in cash and cash equivalents	62.0	(36.7)
Cash and cash equivalents, beginning of period	124.9	191.0
Cash and cash equivalents, end of period	$ 186.9	$ 154.3