Investment in Kronos Worldwide, Inc. - Selected Financial Information of Kronos Income Statement (Detail) - Kronos - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Schedule Of Equity Method Investments [Line Items]
Net sales	$ 421.0	$ 436.5
Cost of sales	332.9	327.2
Income from operations	43.5	49.0
Income tax expense	8.4	12.8
Net income	$ 27.0	$ 30.3

Equity method investment summarized financial information income tax expense benefit.

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The amount of the cost of sales reported by an equity method investment of the entity.

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The amount of gross profit (loss) reported by an equity method investment of the entity.

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The amount of net income (loss) reported by an equity method investment of the entity.

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Amount of revenue from sale of product and rendering of service reported by equity method investee.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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