Other Income, Net (Tables)

6 Months Ended

Jun. 30, 2017

Other Income And Expenses [Abstract]

Schedule of Components of Other Income

	Six months ended June 30,
	2016		2017
	(In millions)
Securities earnings:
Dividends and interest	$	13.6	$	14.2
Securities transactions, net		.1		—
Total		13.7		14.2
Currency transactions, net		4.2		(3.7	)
Insurance recoveries		.3		.1
Business interruption insurance proceeds		3.4		—
Termination fee		—		4.0
Other, net		.5		.7
Total	$	22.1	$	15.3