Pension And Other Postretirement Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2012

Pension And Other Postretirement Benefit Plans [Abstract]

Components Of Net Periodic Pension Cost

	Three Months Ended March 31,
	2012			2011
(dollars in millions)
Service cost, net of employee contributions	$	6.9		$	6.7
Interest cost		4.8			4.7
Expected return on plan assets		(5.8	)		(5.8	)
Amortization		2.5			2.0
Net periodic pension cost	$	8.4		$	7.6