CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Cash flows from operating activities:
Net income	$ 492.7	$ 593.4	$ 585.9
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	151.8	133.7	116.9
Amortization	3.6	3.6	3.7
Stock-based compensation	18.7	23.3	23.7
Non-cash restructuring charges	0.0	0.0	15.3
Pension settlement charges	0.0	0.1	52.2
Loss on disposal of plant	0.0	11.6	0.0
Asset impairments	7.3	9.6	6.2
Deferred income taxes	(3.5)	37.5	(30.8)
Pension and other retirement plans, net	(2.0)	(2.6)	(14.0)
Equity in undistributed earnings of affiliates, net of dividends	(13.4)	(14.3)	(18.1)
Other, net	(4.7)	1.0	(2.0)
Changes in assets and liabilities:
(Increase) decrease in accounts receivable	(58.8)	4.0	(35.6)
Decrease (increase) in inventories	42.0	(13.5)	(49.8)
(Increase) decrease in other current assets	(5.8)	(21.3)	18.5
Increase (decrease) in accounts payable	2.9	4.4	(2.8)
Changes in other assets and liabilities	22.6	6.0	54.7
Net cash provided by operating activities	653.4	776.5	724.0
Cash flows from investing activities:
Capital expenditures	(377.0)	(362.0)	(284.6)
Other, net	(1.7)	(6.7)	(3.6)
Net cash used in investing activities	(378.7)	(368.7)	(288.2)
Cash flows from financing activities:
Borrowings of long-term debt	164.7	0.0	0.0
Repayments of long-term debt	(169.0)	(2.3)	(44.3)
Debt issuance cost	0.0	0.0	(1.2)
Principal repayments on finance leases	(23.3)	(0.1)	0.0
Dividend payments	(59.1)	(57.0)	(54.1)
Excise tax payments	(2.0)	0.0	0.0
Proceeds from stock-based compensation awards	25.5	43.9	20.9
Employee stock purchase plan contributions	7.2	7.1	7.3
Shares purchased under share repurchase programs	(560.9)	(438.3)	(202.8)
Shares repurchased for employee tax withholdings	(5.7)	(12.9)	(19.4)
Net cash used in financing activities	(622.6)	(459.6)	(293.6)
Effect of exchange rates on cash	(21.4)	11.4	(10.5)
Net (decrease) increase in cash and cash equivalents	(369.3)	(40.4)	131.7
Cash, including cash equivalents at beginning of period	853.9	894.3	762.6
Cash, including cash equivalents at end of period	484.6	853.9	894.3
Supplemental cash flow information:
Interest paid, net of amounts capitalized	0.5	6.0	6.6
Income taxes paid, net	71.4	90.8	109.7
Accrued capital expenditures	53.0	53.3	33.2
Dividends declared, not paid	$ 15.2	$ 14.8	$ 14.1