Other Income, Net (Tables)

3 Months Ended

Mar. 31, 2022

Other Income And Expenses [Abstract]

Schedule of Components of Other Income

	Three months ended
	March 31,
	2021		2022
	(In millions)
Interest income and other:
Interest and dividends	$	.9	$	1.1
Securities transactions, net		—		(.2)
Total		.9		.9
Infrastructure reimbursements		6.2		—
Currency transactions, net		(.5)		(1.5)
Other, net		.4		.6
Total	$	7.0	$	—