Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended			9 Months Ended		12 Months Ended
	Sep. 30, 2021	Dec. 31, 2020	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Statement of Cash Flows [Abstract]
Net earnings	$ 107.7		$ 134.0	$ 325.9	$ 360.7
Adjustments to reconcile net earnings to net cash provided by operating activities
Depreciation and amortization				135.9	129.7
Share-based incentive compensation				33.1	31.2
Profit sharing expense				17.0	20.8
Loss on debt redemption and refinancing cost	14.7		0.0	14.7	0.0
Provisions for bad debt				1.3	3.4
Provisions for inventory obsolescence				7.9	6.2
Deferred taxes, net				4.6	1.9
Net gain on sale of business				(1.6)	(14.4)
Gain on equity investment	(6.6)		0.0	(6.6)	0.0	$ (15.1)
Other non-cash items				9.0	(0.6)
Changes in operating assets and liabilities:
Trade receivables, net				(117.2)	(35.2)
Inventories, net				(168.8)	(76.6)
Accounts payable				173.6	(14.9)
Customer advance payments				7.6	8.1
Income tax receivable/payable				44.4	47.8
Other assets and liabilities				(103.3)	(57.9)
Net cash provided by operating activities				377.5	410.2
Cash flows from investing activities:
Capital expenditures				(154.8)	(118.3)
Receipts associated with sale of business and property and equipment				1.1	7.3
Business acquired, net of cash acquired				(0.1)	1.5
Payments associated with debt, equity and equity method investments		$ (5.7)		(16.0)	0.0
Investment in marketable securities				0.0	13.9
Settlement of foreign currency forward contracts				7.8	(3.6)
Proceeds of Corporate Owned Life Insurance				7.7	0.0
Other investing activities				0.0	(1.9)
Net cash used in investing activities				(154.3)	(101.1)
Cash flows from financing activities:
Net payments of short-term borrowings				(6.7)	(98.5)
Proceeds from long-term debt				601.5	0.0
Payments of long-term debt				(522.6)	(2.8)
Payments of debt extinguishment costs				(13.3)	0.0
Dividends paid on common stock				(86.0)	(75.6)
Impact of tax withholding on share-based compensation				(14.8)	(11.5)
Repurchases of common stock				(329.5)	(20.0)
Principal payments related to financing leases				(7.8)	(8.7)
Net cash used in financing activities				(379.2)	(217.1)
Effect of foreign currency exchange rate changes on cash and cash equivalents				1.5	(37.6)
Cash and cash equivalents				548.7	262.4	262.4
Restricted cash and cash equivalents		0.0		0.0	0.0	0.0
Balance, beginning of period				548.7	262.4	262.4
Net change during the period				(154.5)	54.4
Cash and cash equivalents (includes $0.5 in 2021 of cash classified as held for sale)	394.2		316.8	394.2	316.8
Restricted cash and cash equivalents	0.0	$ 0.0	0.0	0.0	0.0	$ 0.0
Balance, end of period	$ 394.2		$ 316.8	394.2	316.8
Supplemental Cash Flow Information:
Interest payments, net of amounts capitalized				137.8	140.5
Income tax payments, net of cash refunds				75.0	53.0
Restructuring payments including associated costs				16.4	58.7
Non-cash items:
Transfers of shares of common stock from treasury for profit-sharing contributions				$ 28.0	$ 24.4