Other Income, Net (Tables)

3 Months Ended

Mar. 31, 2017

Other Income And Expenses [Abstract]

Schedule of Components of Other Income

	Three months ended March 31,
	2016		2017
	(In millions)
Securities earnings:
Dividends and interest	$	6.7	$	7.0
Securities transactions, net		.1		—
Total		6.8		7.0
Currency transactions, net		2.3		(.2	)
Insurance recoveries		.1		.1
Business interruption insurance proceeds		2.0		—
Other, net		.2		.7
Total	$	11.4	$	7.6