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Reportable Business Segments and International Operations, Geographic information (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenues and long-lived assets by geographical area
Net sales	$ 2,151.0	$ 2,100.6	$ 2,015.3	$ 1,958.5	$ 2,224.7	$ 2,129.0	$ 1,981.4	$ 1,866.9	$ 8,225.4	$ 8,202.0	$ 7,011.3
Long-lived assets	1,195.7				875.8				1,195.7	875.8	816.8
United States
Revenues and long-lived assets by geographical area
Net sales									2,524.7	2,241.4	1,978.4
Long-lived assets	355.0				225.1				355.0	225.1	212.7
China
Revenues and long-lived assets by geographical area
Net sales									2,306.4	2,594.0	2,067.3
Long-lived assets	343.1				273.8				343.1	273.8	244.7
Other foreign locations
Revenues and long-lived assets by geographical area
Net sales									3,394.3	3,366.6	2,965.6
Long-lived assets	$ 497.6				$ 376.9				$ 497.6	$ 376.9	$ 359.4