Other Income, Net - Schedule of Components of Other Income (Detail) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Securities earnings:
Dividends and interest			$ 16.8	$ 14.1
Currency transactions, net			4.8	(3.7)
Insurance recoveries	$ 0.2		0.4	0.1
Infrastructure reimbursement			4.0	0.2
Gain on land sales			12.5
Other, net			1.2	0.7
Total	$ 19.3	$ 3.8	$ 39.7	$ 11.4

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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Infrastructure development cost reimbursed.

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