Employee Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2020

Compensation And Retirement Disclosure [Abstract]

Components of Net Periodic Benefit Cost

The components of net periodic defined benefit pension cost are presented in the table below.

	Three months ended
	March 31,
	2019			2020
	(In millions)
Service cost	$	2.8		$	3.2
Interest cost		3.5			2.6
Expected return on plan assets		(3.2	)		(2.3	)
Amortization of prior service cost		.1			-
Recognized actuarial losses		3.4			4.4
Total	$	6.6		$	7.9