Pension and Other Postretirement Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2012

Components Of Net Periodic Pension Cost

The components of net periodic pension cost are as follows:

	Quarter Ended June 30,						Six Months Ended June 30,
	2012			2011			2012			2011
(dollars in millions)
Service cost, net of employee contributions	$	6.9		$	6.8		$	13.8		$	13.5
Interest cost		4.9			4.7			9.7			9.4
Expected return on plan assets		(5.9	)		(5.9	)		(11.7	)		(11.7	)
Amortization		2.5			2.0			5.0			4.0
Net periodic pension cost	$	8.4		$	7.6		$	16.8		$	15.2