Consolidated Statements of Cash Flows - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Cash Flows from Operating Activities:
Net income		$ 449.6	$ 436.8	$ 392.6
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, depletion, and amortization of intangibles		358.0	356.5	381.6
Amortization of deferred financing costs		7.8	7.8	9.2
Share-based compensation expense		19.7	18.2	15.6
Deferred income tax provision (benefit)		(4.0)	1.7	2.6
Loss on disposals of property, plant, and equipment		7.3	0.5	7.0
Pension and post retirement benefits expense, net of contributions		(30.5)	31.2	25.4
Other, net		(5.9)	(20.3)	(0.9)
Decrease (increase) in assets —
Accounts receivable		(3.6)	9.5	(8.5)
Inventories		(25.7)	(11.9)	(72.4)
Prepaid expenses and other current assets		0.0	4.1	(5.1)
Increase (decrease) in liabilities —
Accounts payable		16.6	(37.3)	(36.0)
Accrued liabilities		(3.2)	(15.5)	7.0
Federal and state income tax payable/receivable		15.1	(18.7)	18.0
Net cash provided by operating activities		801.2	762.6	736.1
Cash Flows from Investing Activities:
Additions to property, plant, and equipment	[1]	(274.3)	(314.5)	(420.2)
Proceeds from sale of a business		0.0	23.0	0.0
Acquisitions of businesses, net of cash acquired		(485.4)	0.0	(20.5)
Additions to other long-term assets		(10.4)	(12.3)	(12.5)
Other, net		0.5	5.7	2.1
Net cash used for investing activities		(769.6)	(298.1)	(451.1)
Cash Flows from Financing Activities:
Proceeds from issuance of debt		385.0	0.0	398.9
Repayments of debt		(37.5)	(47.6)	(592.5)
Financing costs paid		(2.0)	0.0	(3.4)
Common stock dividends paid		(216.1)	(200.8)	(157.4)
Repurchases of common stock		(100.3)	(154.7)	0.0
Proceeds from exercise of stock options		0.0	0.0	3.7
Excess tax benefits from stock-based awards		5.7	6.0	12.2
Shares withheld to cover employee restricted stock taxes		(11.2)	(8.7)	(13.2)
Other, net		(0.1)	0.6	0.6
Net cash provided by (used for) financing activities		23.5	(405.2)	(351.1)
Net increase (decrease) in cash and cash equivalents		55.1	59.3	(66.1)
Cash and cash equivalents, beginning of year		184.2	124.9	191.0
Cash and cash equivalents, end of year		$ 239.3	$ 184.2	$ 124.9

[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.