Noncontrolling Interests (Tables)

3 Months Ended

Mar. 31, 2012

Noncontrolling Interest [Abstract]

Changes in noncontrolling interests

	Three months ended March 31,
	2012			2011
	(Dollars in millions)
Balance at January 1	$	38.4		$	40.9
Distributions to noncontrolling interests		(0.7	)		(0.7	)
Comprehensive income:
Net income attributable to noncontrolling interests		1.6			1.8
Other comprehensive income, net of tax		—			—
Comprehensive income		1.6			1.8
Balance at March 31	$	39.3		$	42.0