CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Cash flows from operating activities:
Net income	$ 593.4	$ 585.9	$ 661.8
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	133.7	116.9	116.9
Amortization	3.6	3.7	5.4
Stock-based compensation	23.3	23.7	37.5
Non-cash restructuring charges	0.0	15.3	0.0
Pension settlement charge	0.1	52.2	1.8
Loss on disposal of plant	11.6	0.0	0.0
Asset impairments	9.6	6.2	5.6
Deferred income taxes	37.5	(30.8)	(42.9)
Pension and other retirement plans, net	(2.6)	(14.0)	14.8
Equity in undistributed earnings of affiliates, net of dividends	(14.3)	(18.1)	(17.4)
Other, net	1.0	(2.0)	(1.4)
Changes in assets and liabilities:
Decrease (increase) in accounts receivable	4.0	(35.6)	(123.5)
Increase in inventories	(13.5)	(49.8)	(86.5)
(Increase) decrease in other current assets	(21.3)	18.5	(7.3)
Increase (decrease) in accounts payable	4.4	(2.8)	16.8
Changes in other assets and liabilities	6.0	54.7	2.4
Net cash provided by operating activities	776.5	724.0	584.0
Cash flows from investing activities:
Capital expenditures	(362.0)	(284.6)	(253.4)
Acquisition of business	0.0	0.0	(2.2)
Other, net	(6.7)	(3.6)	2.5
Net cash used in investing activities	(368.7)	(288.2)	(253.1)
Cash flows from financing activities:
Debt issuance cost	0.0	(1.2)	0.0
Repayments of long-term debt	(2.3)	(44.3)	(2.2)
Dividend payments	(57.0)	(54.1)	(51.1)
Proceeds from stock-based compensation awards	43.9	20.9	29.4
Employee stock purchase plan contributions	7.1	7.3	7.7
Shares purchased under share repurchase programs	(438.3)	(202.8)	(137.1)
Shares repurchased for employee tax withholdings	(12.9)	(19.4)	(14.8)
Other, net	(0.1)	0.0	0.0
Net cash used in financing activities	(459.6)	(293.6)	(168.1)
Effect of exchange rates on cash	11.4	(10.5)	(15.7)
Net (decrease) increase in cash and cash equivalents	(40.4)	131.7	147.1
Cash, including cash equivalents at beginning of period	894.3	762.6	615.5
Cash, including cash equivalents at end of period	853.9	894.3	762.6
Supplemental cash flow information:
Interest paid, net of amounts capitalized	6.0	6.6	8.0
Income taxes paid, net	90.8	109.7	171.8
Accrued capital expenditures	53.3	33.2	41.1
Dividends declared, not paid	$ 14.8	$ 14.1	$ 13.4