Pensions and Postretirement Benefits Other Than Pensions (Tables)

3 Months Ended

Mar. 31, 2012

Pensions and Postretirement Benefits Other Than Pensions [Abstract]

Net periodic benefit cost for pensions

	U.S. Plans						U.K. Plans						Other Plans
	Three Months Ended March 31,						Three Months Ended March 31,						Three Months Ended March 31,
	2012			2011			2012			2011			2012			2011
	(Dollars in millions)
Service cost	$	14.2		$	12.2		$	5.0		$	4.2		$	2.4		$	1.7
Interest cost		42.0			43.1			11.0			10.8			2.2			2.0
Expected return on plan assets		(54.3	)		(52.6	)		(16.0	)		(15.4	)		(2.3	)		(2.1	)
Amortization of prior service cost		1.9			1.6			(0.1	)		(0.1	)		0.1			0.1
Amortization of actuarial loss		18.9			15.6			3.4			0.4			1.2			0.6
Gross periodic benefit cost (income)		22.7			19.9			3.3			(0.1	)		3.6			2.3
Curtailment loss (1)		—			—			—			—			1.5			—
Net periodic benefit cost (income)	$	22.7		$	19.9		$	3.3		$	(0.1	)	$	5.1		$	2.3
Termination benefit charge	$	—		$	—		$	—		$	0.7		$	—		$	—

(1) Due to the approval of a plan to close a non-U.S. facility, pension assumptions were reevaluated on March 30, 2012 for the remeasurement of a non-U.S. plan. The facility closure resulted in a curtailment loss of $1.5 million.

Weighted average assumptions used to determine net periodic benefit costs

	U.S. Plans						U.K. Plans						Other Plans
	2012			2011			2012			2011			2012			2011
Discount rate		5.03	%		5.67	%		5.00	%		5.81	%		4.38	%		5.19	%
Expected long-term rate of return on assets		8.25	%		8.25	%		8.25	%		8.25	%		8.07	%		8.08	%
Rate of compensation increase		4.10	%		4.10	%		3.75	%		3.75	%		3.43	%		3.40	%

Net periodic postretirement benefit cost for other than pensions

	Three Months Ended March 31,
	2012		2011
	(Dollars in millions)
Service cost	$	0.3	$	0.3
Interest cost		3.4		4.2
Amortization of prior service cost		—		—
Amortization of actuarial (gain) loss		—		—
Net periodic benefit cost	$	3.7	$	4.5

The following table provides the assumptions used to determine the net periodic postretirement benefit cost.

	Three Months Ended March 31,
	2012	2011
Discount rate	4.67%	5.29%
Healthcare trend rate	7.5% in 2012 to 5% in 2018	7.5% in 2011 to 5% in 2017