Discontinued Operations

3 Months Ended

Mar. 31, 2019

Discontinued Operations and Disposal Groups [Abstract]

Discontinued Operations

Discontinued Operations

On December 20, 2018, we closed the sale of our oxygen-related products business to NGK SPARK PLUG CO., LTD. (the “Divestiture”). As a result of the Divestiture, the asset group, which included our respiratory and on-site generation systems businesses, qualified for discontinued operations for the three months ended March 31, 2018. As such, the financial results of the respiratory therapy and on-site generation systems businesses are reflected in our unaudited condensed consolidated statements of income and comprehensive income as discontinued operations for the prior-year period presented.

Summarized Financial Information of Discontinued Operations

The following table represents income from discontinued operations, net of tax:

	Three Months Ended March 31, 2018
Sales	$	35.6
Cost of sales	25.4
Selling, general and administrative expenses	7.5
Amortization expense	0.6
Operating income (1)	2.1
Other income, net	0.2
Income before income taxes	2.3
Income tax expense	0.7
Income from discontinued operations, net of tax	$	1.6

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⁽¹⁾  Includes depreciation expense of $0.4 for the three months ended March 31, 2018.