Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash Flows from Operating Activities:
Consolidated net earnings	$ 612.0	$ 470.4	$ 713.4
Adjustments to reconcile consolidated net earnings to net cash provided by operating activities:
Depreciation, depletion and amortization	371.5	344.0	297.2
Stock-based compensation expense	34.1	29.3	30.5
Gains on divestitures and sales of assets	(3.1)	(39.3)	(19.4)
Deferred income taxes, net	29.4	85.1	(239.1)
Noncash portion of asset and portfolio rationalization charge	17.0	17.0
Other items, net	8.6	(9.0)	(13.4)
Changes in operating assets and liabilities, net of effects of acquisitions and divestitures:
Accounts receivable, net	(50.4)	(10.6)	(29.3)
Inventories, net	(27.7)	(22.0)	(79.0)
Accounts payable	25.9	20.1	(17.9)
Other assets and liabilities, net	(34.2)	(179.9)	14.6
Net Cash Provided by Operating Activities	966.1	705.1	657.6
Cash Flows from Investing Activities:
Additions to property, plant and equipment	(393.5)	(376.0)	(410.3)
Acquisitions, net of cash acquired		(1,642.1)	(12.1)
Proceeds from divestitures and sales of assets	8.4	69.1	36.0
Payment of railcar construction advances		(79.4)	(43.6)
Reimbursement of railcar construction advances		79.4	43.6
Investments in life insurance contracts, net	0.6	0.8	0.3
Other investing activities, net	(1.4)
Net Cash Used for Investing Activities	(385.9)	(1,948.2)	(386.1)
Cash Flows from Financing Activities:
Borrowings of long-term debt	625.0	1,000.0	2,408.8
Repayments of long-term debt	(975.1)	(910.1)	(1,065.0)
Debt issuance costs		(3.9)	(2.2)
Payments on finance lease obligations	(11.0)
Payments on capital lease obligations		(3.5)	(3.5)
Dividends paid	(129.8)	(116.4)	(108.9)
Repurchases of common stock	(98.2)	(100.4)	(100.0)
Payments of deferred acquisition consideration		(6.7)	(2.8)
Purchase of the noncontrolling interest in the existing joint venture		(12.8)
Distributions to owners of noncontrolling interest	(0.6)
Contributions by noncontrolling interest to joint venture			0.2
Proceeds from exercise of stock options	13.7	7.3	10.1
Shares withheld for employees’ income tax obligations	(28.1)	(11.9)	(11.8)
Net Cash (Used for) Provided by Financing Activities	(604.1)	(158.4)	1,124.9
Net (Decrease) Increase in Cash and Cash Equivalents	(23.9)	(1,401.5)	1,396.4
Cash and Cash Equivalents, beginning of year	44.9	1,446.4	50.0
Cash and Cash Equivalents, end of year	$ 21.0	$ 44.9	$ 1,446.4

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Aggregate cash proceeds received from a combination of transactions in which noncurrent assets are sold, which may include the sale of a business, an investment in an affiliate (including an equity method investee), property, plant and equipment and intangible assets. Excludes sales of trading, available-for-sale, and held-to-maturity securities.

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Amount of cash inflow from exercise of option under share-based payment arrangement.

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The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

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The cash outflow for the payments made by the entity, generally on a straight-line basis over periods ranging from five to forty years to developers, builders, government agencies and municipalities for borrowings received in construction.

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The cash outflow for the obligation for a lease meeting the criteria for capitalization (with maturities exceeding one year or beyond the operating cycle of the entity, if longer).

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The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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Amount of noncash expense for share-based payment arrangement.

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