Acquisitions (Estimated Fair Values of The Assets Acquired And Liabilities Assumed) (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Business Acquisition [Line Items]
Property, plant and equipment	$ 1,297.4	$ 85.4	$ 47.9
Goodwill (see Note E)	1,406.3	833.8	822.2
Series of Individually Immaterial Business Acquisitions
Business Acquisition [Line Items]
Accounts receivable	75.2	19.6	10.5
Inventory	63.2	26.2	6.2
Property, plant and equipment	82.3	28.2	15.7
Goodwill (see Note E)	566.3	28.1	11.5
Other current and long-term assets	29.4	0.8	0.8
Current liabilities	(48.2)	(11.9)	(4.6)
Deferred income taxes	(127.4)	(9.9)	(6.3)
Long-term liabilities	(23.7)	(0.8)	0.0
Noncontrolling interest	0.0	0.0	(0.5)
Fair value of net identifiable assets	1,265.1	109.2	53.6
Less: Additional consideration payable	0.0	0.0	2.7
Less: Common stock issued for acquired companies	0.0	0.0	11.8
Net cash consideration	1,265.1	109.2	39.1
Series of Individually Immaterial Business Acquisitions \| Customer relationships (7 to 20-year life)
Business Acquisition [Line Items]
Other intangible assets (see Note E)	378.9	19.4	11.3
Series of Individually Immaterial Business Acquisitions \| Technology (5 to 15-year life)
Business Acquisition [Line Items]
Other intangible assets (see Note E)	173.3	4.9	0.0
Series of Individually Immaterial Business Acquisitions \| Trademarks and trade names (15-year)
Business Acquisition [Line Items]
Other intangible assets (see Note E)	$ 67.1	2.7	8.6
Useful life	15 years
Series of Individually Immaterial Business Acquisitions \| Non-compete agreements and other (5 to 15-year life)
Business Acquisition [Line Items]
Other intangible assets (see Note E)	$ 28.7	$ 1.9	$ 0.4
Series of Individually Immaterial Business Acquisitions \| Minimum \| Customer relationships (7 to 20-year life)
Business Acquisition [Line Items]
Useful life	15 years
Series of Individually Immaterial Business Acquisitions \| Minimum \| Technology (5 to 15-year life)
Business Acquisition [Line Items]
Useful life	5 years
Series of Individually Immaterial Business Acquisitions \| Minimum \| Non-compete agreements and other (5 to 15-year life)
Business Acquisition [Line Items]
Useful life	5 years
Series of Individually Immaterial Business Acquisitions \| Maximum \| Customer relationships (7 to 20-year life)
Business Acquisition [Line Items]
Useful life	20 years
Series of Individually Immaterial Business Acquisitions \| Maximum \| Technology (5 to 15-year life)
Business Acquisition [Line Items]
Useful life	15 years
Series of Individually Immaterial Business Acquisitions \| Maximum \| Non-compete agreements and other (5 to 15-year life)
Business Acquisition [Line Items]
Useful life	15 years

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Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Additional Consideration Payable

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