Employee Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2014

Defined Benefit Pension Plans

Components of Net Periodic Defined Benefit Cost

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

	Three months ended September 30,						Nine months ended September 30,
	2013			2014				2013			2014
	(In millions)
Service cost	$	3.2		$	2.5		$	9.7		$	7.6
Interest cost		6.0			6.3			17.9			19.0
Expected return on plan assets		(5.8	)		(6.2	)		(17.8	)		(18.7	)
Amortization of unrecognized:
Prior service cost		.4			.2			1.2			.6
Net transition obligations		.1			—			.3			—
Recognized actuarial losses		3.4			2.8			10.2			8.4
Total	$	7.3		$	5.6		$	21.5		$	16.9

OPEB

Components of Net Periodic Defined Benefit Cost

Other postretirement benefits – The components of our net periodic other postretirement benefit cost are presented in the table below.

	Three months ended September 30,						Nine months ended September 30,
	2013			2014				2013			2014
	(In millions)
Service cost	$	.1		$	—		$	.3		$	.1
Interest cost		.3			.2			.5			.5
Amortization of prior service credit		(.5	)		(.5	)		(1.4	)		(1.6	)
Recognized actuarial gains		—			—			.1			(.1	)
Total	$	(.1	)	$	(.3	)	$	(.5	)	$	(1.1	)