Consolidated Balance Sheets (Parenthetical) - USD ($) shares in Millions, $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Trade accounts receivable, allowance	$ 26.0	$ 19.0
Property, plant and equipment, accumulated depreciation and amortization	497.6	454.4
Other intangibles, net of accumulated amortization	$ 1,589.9	$ 1,482.1
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	1,000.0	1,000.0
Common stock, shares issued	195.3	193.5
Common stock, shares outstanding	190.1	188.7
Treasury stock, shares	5.2	4.8