Employee Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2013

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.

	Threemonthsended June30,						Sixmonthsended June30,
	2012			2013				2012			2013
	(In millions)
Service cost	$	2.6		$	3.2			$	5.2		$	6.5
Interest cost		6.5			5.8				12.9			11.9
Expected return on plan assets		(5.5	)		(5.9	)			(11.0	)		(12.0	)
Amortization of unrecognized:
Prior service cost		.4			.4				.8			.8
Net transition obligations		.1			.1				.2			.2
Actuarial losses		2.3			3.4				4.6			6.8
Total	$	6.4		$	7.0			$	12.7		$	14.2

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.

	Threemonthsended June30,							Sixmonthsended June30,
	2012			2013				2012				2013
	(In millions)							(In millions)
Service cost	$	—			$	.1			$	.1			$	.2
Interest cost		.3				.  1				.5				.3
Amortization of prior service credit		(.4	)			(.4	)			(.9	)			(.9	)
Total	$	(.1	)		$	(.2	)		$	(.3	)		$	(.4	)