Other Income, Net - Schedule of Components of Other Income (Detail) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Securities earnings:
Dividends and interest			$ 2.9	$ 6.1
Securities transactions, net			(0.3)	0.3
Total	$ 1.0	$ 3.3	2.6	6.4
Currency transactions, net			6.1	(0.2)
Insurance recoveries		4.7	1.6	5.0
Infrastructure reimbursement			19.1	9.1
Gain on land sales			0.5	0.7
Other, net			1.4	1.0
Total	$ (3.6)	$ 15.4	$ 31.3	$ 22.0

Amount of unrealized and realized gain (loss) on investment in debt and equity securities.

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Amount before tax of foreign currency transaction realized and unrealized gain (loss) recognized in the income statement.

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Amount of gain (loss) on sale or disposal of property, plant and equipment assets, excluding oil and gas property and timber property.

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The amount recovered from insurance. These recoveries reduce costs and losses that are reported as a separate line item under operating expenses.

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Amount of operating dividend and interest income, including amortization and accretion of premiums and discounts, on securities.

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Amount of revenue and income classified as other.

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Amount of income (expense) related to nonoperating activities, classified as other.

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Infrastructure development cost reimbursed.

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Aggregate nonoperating income amounts earned from investment securities including dividends, interest on securities, profits (losses) on securities and net and miscellaneous other income items.

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