Other Income, Net (Tables)

3 Months Ended

Mar. 31, 2019

Other Income And Expenses [Abstract]

Schedule of Components of Other Income

	Three months ended March 31,
	2018			2019
	(In millions)
Securities earnings:
Dividends and interest	$	8.3		$	2.9
Securities transactions, net		—			.2
		8.3			3.1
Currency transactions, net		(5.0	)		.9
Insurance recoveries		.2			.3
Infrastructure reimbursement		3.8			1.1
Gain on land sales		12.5			—
Other, net		.6			1.2
Total	$	20.4		$	6.6