Pensions and Postretirement Benefits (Tables)

12 Months Ended

Dec. 31, 2011

Pensions and Postretirement Benefits [Abstract]

Change in projected benefit obligations

	Net Actuarial Loss			Prior Service Cost			Total
							Before Tax			Tax		After Tax
	(Dollars in millions)
Amounts Recognized in Accumulated Other Comprehensive Income (Loss):
Unrecognized (loss) at December 31, 2009	$	(1,371.1	)	$	(21.4	)	$	(1,392.5	)	$	524.2	$	(868.3	)
Amount recognized in net periodic benefit cost		120.9			6.4			127.3
Amount due to remeasurements		(59.8	)		(3.2	)		(63.0	)
Foreign currency gain / (loss)		1.8			(0.2	)		1.6
Unrecognized (loss) at December 31, 2010	$	(1,308.2	)	$	(18.4	)	$	(1,326.6	)	$	495.1	$	(831.5	)
Amount recognized in net periodic benefit cost		62.2			5.3			67.5
Amount due to remeasurements		(418.5	)		(1.0	)		(419.5	)
Amount due to settlement and curtailment		0.6			1.2			1.8
Foreign currency gain / (loss)		1.0			0.1			1.1
Unrecognized (loss) at December 31, 2011	$	(1,662.9	)	$	(12.8	)	$	(1,675.7	)	$	617.1	$	(1,058.6	)

Aggregate defined benefit plans with accumulated benefit obligation

	U.S. Plans						U.K. Plans						Other Plans
	2011			2010			2011			2010			2011			2010
	(Dollars in millions)
Change in Projected Benefit Obligations
Projected benefit obligation at beginning of year	$	3,091.4		$	2,906.4		$	705.4		$	678.7		$	149.8		$	117.8
Service cost		49.1			46.3			17.1			15.6			7.4			4.9
Interest cost		171.2			168.5			42.0			39.0			8.4			7.1
Amendments		3.2			0.1			—			—			0.2			3.1
Actuarial (gains) losses		238.1			159.2			108.1			10.4			27.0			15.9
Participant contributions		—			—			0.3			0.3			2.4			2.5
Curtailments		0.1			—			—			—			—			—
Settlements		(1.1	)		—			—			—			(0.7	)		—
Special termination benefits		4.0			—			0.7			0.1			—			—
Foreign currency translation		—			—			(4.8	)		(22.6	)		(4.1	)		3.0
Other		—			—			—			—			0.5			—
Benefits paid		(190.0	)		(189.1	)		(14.3	)		(16.1	)		(4.0	)		(4.5	)
Projected benefit obligation at end of year	$	3,366.0		$	3,091.4		$	854.5		$	705.4		$	186.9		$	149.8
Accumulated Benefit Obligation at the End of Year	$	3,181.3		$	2,942.9		$	718.4		$	589.8		$	159.3		$	120.7
Weighted Average Assumptions Used to Determine Benefit Obligations as of December 31
Discount rate		5.03	%		5.67	%		5.00	%		5.81	%		4.38	%		5.19	%
Rate of compensation increase		4.10	%		4.10	%		3.75	%		3.75	%		3.43	%		3.40	%
Change in Plan Assets
Fair value of plan assets at beginning of year	$	2,574.9		$	2,070.1		$	702.4		$	633.5		$	98.6		$	80.5
Actual return on plan assets		213.7			290.1			22.6			73.4			(2.9	)		9.0
Settlements		(1.3	)		—			—			—			(0.8	)		—
Participant contributions		—			—			0.3			0.3			2.4			2.5
Company contributions		44.0			403.8			34.4			32.8			13.0			7.5
Foreign currency translation		—			—			(2.8	)		(21.5	)		(2.1	)		3.6
Other		—			—			—			—			0.3			—
Benefits paid		(190.0	)		(189.1	)		(14.3	)		(16.1	)		(4.0	)		(4.5	)
Fair value of plan assets at end of year	$	2,641.3		$	2,574.9		$	742.6		$	702.4		$	104.5		$	98.6
Funded Status (Underfunded)	$	(724.7	)	$	(516.5	)	$	(111.9	)	$	(3.0	)	$	(82.4	)	$	(51.2	)
Amounts Recognized in the Balance Sheet Consist of:
Prepaid pension	$	—		$	—		$	—		$	—		$	0.4		$	0.7
Accrued expenses — current liability		(14.1	)		(14.2	)		—			—			(1.0	)		(0.5	)
Pension obligation — non-current liability		(710.6	)		(502.3	)		(111.9	)		(3.0	)		(81.8	)		(51.4	)
Net asset (liability) recognized	$	(724.7	)	$	(516.5	)	$	(111.9	)	$	(3.0	)	$	(82.4	)	$	(51.2	)
Accumulated other comprehensive income (loss) — before tax	$	(1,349.0	)	$	(1,178.7	)	$	(227.4	)	$	(81.2	)	$	(79.0	)	$	(44.7	)

Aggregate defined benefit plans with projected benefit obligation

	U.S. Plans				U.K. Plans				Other Plans
	2011		2010		2011		2010		2011		2010
	(Dollars in millions)
Aggregate fair value of plan assets	$	2,641.3	$	2,574.9	$	—	$	—	$	102.7	$	9.2
Aggregate projected benefit obligation	$	3,366.0	$	3,091.4	$	1.0	$	0.1	$	185.5	$	37.8
Aggregate accumulated benefit obligations	$	3,181.3	$	2,942.9	$	0.4	$	0.1	$	158.4	$	33.9

Projected benefit obligation exceeding the fair value of plan assets

	U.S. Plans				U.K. Plans				Other Plans
	2011		2010		2011		2010		2011		2010
	(Dollars in millions)
Aggregate fair value of plan assets	$	2,641.3	$	2,574.9	$	742.6	$	702.5	$	103.4	$	90.2
Aggregate projected benefit obligation	$	3,366.0	$	3,091.4	$	854.5	$	705.4	$	186.2	$	142.1
Aggregate accumulated benefit obligations	$	3,181.3	$	2,942.9	$	718.4	$	589.8	$	158.8	$	113.4

Net periodic benefit cost of pensions

	U.S. Plans									U.K. Plans									Other Plans
	2011			2010			2009			2011			2010			2009			2011			2010			2009
	(Dollars in millions)
Components of Net Periodic Benefit Cost (Income):
Service cost	$	49.1		$	46.3		$	42.9		$	17.1		$	15.6		$	16.0		$	7.4		$	4.9		$	3.9
Interest cost		171.2			168.5			171.9			42.0			39.0			37.2			8.4			7.1			6.6
Expected return on plan assets		(209.6	)		(187.6	)		(174.2	)		(61.4	)		(52.5	)		(42.6	)		(8.4	)		(7.0	)		(5.2	)
Amortization of prior service cost		5.9			7.0			7.3			(0.6	)		(0.6	)		(0.6	)		0.4			0.1			0.9
Amortization of actuarial (gain) loss		59.5			116.8			105.1			0.1			2.6			7.4			2.6			1.5			1.3
Gross periodic benefit cost (income)		76.1			151.0			153.0			(2.8	)		4.1			17.4			10.4			6.6			7.5
Settlement (gain)/loss		0.4			—			—			—			—			—			0.3			—			(0.4	)
Curtailment (gain)/loss		1.4			—			—			—			—			—			—			—			—
Net benefit cost (income)	$	77.9		$	151.0		$	153.0		$	(2.8	)	$	4.1		$	17.4		$	10.7		$	6.6		$	7.1
Special termination benefit charge	$	4.0		$	—		$	—		$	0.7		$	0.1		$	1.2		$	—		$	—		$	—
Weighted Average Assumptions Used to Determine Net Periodic Benefit Costs for the Years Ended December 31
Discount rate 1/1-6/6		5.67	%		5.90	%		6.47	%		5.81	%		5.88	%		5.88	%		5.20	%		5.75	%		6.17	%
Discount rate 6/7-10/5		5.63	%		5.90	%		6.47	%		5.81	%		5.88	%		5.88	%		5.20	%		5.75	%		6.17	%
Discount rate 10/6-12/31		5.63	%		5.90	%		6.47	%		5.81	%		5.88	%		5.88	%		5.17	%		5.75	%		6.17	%
Expected long-term return on assets		8.25	%		8.75	%		8.75	%		8.25	%		8.50	%		8.50	%		8.08	%		8.32	%		8.12	%
Rate of compensation increase		4.10	%		4.10	%		4.10	%		3.75	%		3.75	%		3.75	%		3.41	%		3.38	%		3.31	%

Expected pension benefit payments

Year	U.S. Plans		U.K. Plans		Other Plans
	(Dollars in millions)
2012	$	199.9	$	11.6	$	4.3
2013		208.4		13.3		4.9
2014		203.1		15.0		5.4
2015		206.8		16.9		6.8
2016		209.8		19.1		7.9
2017 to 2021		1,138.2		135.9		50.2

Classes and FV levels for the Global Plans' assets

	December 31, 2011											December 31, 2010
	Total			Level 1			Level 2			Level 3		Total			Level 1			Level 2			Level 3
	(Dollars in millions)
Investments at FV
Derivatives	$	8.5		$	8.5		$	—		$	—	$	(4.0	)	$	(4.0	)	$	—		$	—
Short term investments
Commingled money market funds		176.8			—			176.8			—		139.6			—			139.6			—
Commingled collateral held under securities lending agreements		9.4			—			9.4			—		65.0			—			65.0			—
Commingled fixed income funds		23.2			—			23.2			—		12.5			—			12.5			—
Commercial paper and other		—			—			—			—		2.5			—			2.5			—
Equity
Common stock/REITs		956.7			956.7			—			—		1,262.1			1,262.1			—			—
Common stock — loaned		(9.7	)		(9.7	)		—			—		(49.5	)		(49.5	)		—			—
Commingled equity funds		570.9			—			570.9			—		751.1			—			751.1			—
Fixed Income
U.S. treasuries		161.6			161.6			—			—		66.5			66.5			—			—
Government, corporate and asset backed obligations		584.6			—			584.6			—		438.7			—			438.7			—
U.S. government securities — loaned		—			—			—			—		(1.2	)		(1.2	)		—			—
Corporate obligations — loaned		(0.2	)		—			(0.2	)		—		(13.2	)		—			(13.2	)		—
Commingled fixed income funds		532.7			—			532.7			—		448.4			—			448.4			—
Real Estate Commingled Funds		281.2			—			—			281.2		201.7			—			—			201.7
Commingled Commodity Funds		92.1			—			92.1			—		24.8			—			24.8			—
Asset Allocation Commingled Funds and Absolute Return Commingled Funds		74.9			—			74.9			—		1.7			—			1.7			—
Guaranteed Investment Contracts		3.4			—			3.4			—		3.4			—			3.4			—
Securities on Loan		9.9			9.7			0.2			—		63.9			50.7			13.2			—
Total Investments		3,476.0		$	1,126.8		$	2,068.0		$	281.2		3,414.0		$	1,324.6		$	1,887.7		$	201.7
Other Assets
Cash		18.0											18.6
Net receivables/payables related to investment transactions		4.5											9.0
Obligations under securities lending agreements		(10.1	)										(65.7	)
Global plan assets	$	3,488.4										$	3,375.9

Change in FV of Level 3 investments

	Real Estate
	(Dollars in millions)
FV December 31, 2009	$	125.9
Acquisitions		70.2
Dispositions		(7.8	)
Realized Gain (Loss)		0.1
Change in FV		13.3
FV December 31, 2010		201.7
Acquisitions		58.7
Realized Gain (Loss)		1.5
Change in FV		19.3
FV December 31, 2011	$	281.2

Target allocation and actual asset allocation for US pension plans

Asset Category	Target Allocation 2012			Actual Allocation At December 31,  2011			Actual Allocation At December 31,  2010
Equities – U.S. Large Cap		15-35	%		24	%		31	%
Equities – U.S. Mid Cap		3-8	%		4	%		7	%
Equities – U.S. Small Cap		1-6	%		2	%		4	%
Equities – Developed International & Emerging Markets		10-20	%		15	%		20	%
Equities – Total		35-65	%		45	%		62	%
Real Estate		0-10	%		8	%		5	%
Commodities		2-4	%		3	%		1	%
Equities & Alternatives – Total		45-70	%		56	%		68	%
Fixed Income		30-60	%		43	%		31	%
Cash		0-2	%		1	%		1	%
Total		100	%		100	%		100	%

Target allocation and actual asset allocation for UK pension plans

Asset Category	Target Allocation 2012		Actual Allocation At December 31,  2011		Actual Allocation At December 31,  2010
Equities – U.K.		14-17%		17%		30%
Equities – Global		27-33%		26%		27%
Absolute Return		9-11%		10%		0%
Real Estate		8-12%		10%		9%
Fixed Income		32-39%		36%		31%
Cash		0%		1%		3%
Total		100%		100%		100%

Change in projected benefit obligations

	2011			2010
	(Dollars in millions)
Change in Projected Benefit Obligations
Projected benefit obligation at beginning of year	$	326.6		$	331.5
Service cost		1.1			1.1
Interest cost		15.7			17.4
Amendments		(2.4	)		—
Actuarial (gains) losses		0.6			3.7
Foreign currency translation/Other		(0.1	)		0.1
Gross benefits paid		(31.0	)		(30.4	)
Federal subsidy received		3.5			3.2
Projected benefit obligation at end of year	$	314.0		$	326.6
Weighted-Average Assumptions used to Determine Benefit Obligations as of December 31
Discount rate		4.67	%		5.29	%
Initial health care rate of increase		7.50	%		7.50	%
Ultimate health care rate of increase		5.00	%		5.00	%
Year ultimate trend reached		2018			2017
Change in Plan Assets
Fair value of plan assets at beginning of year	$	—		$	—
Company contributions		31.0			30.4
Gross benefits paid		(31.0	)		(30.4	)
Fair value of plan assets at end of year	$	—		$	—
Funded Status (Underfunded)	$	(314.0	)	$	(326.6	)
Amounts Recognized in the Balance Sheet Consist of:
Accrued expenses — current liability	$	(27.8	)	$	(29.7	)
Postretirement benefits other than pensions — non-current liability		(286.2	)		(296.9	)
Net liability recognized	$	(314.0	)	$	(326.6	)
Accumulated other comprehensive income (loss) — before tax	$	(20.3	)	$	(22.0	)

Net periodic postretirement benefit cost for other than pensions

	Year Ended December 31,
	2011			2010			2009
	(Dollars in millions)
Components of Net Periodic Benefit Cost:
Service cost	$	1.1		$	1.1		$	1.4
Interest cost		15.6			17.4			19.6
Amortization of prior service cost		(0.4	)		(0.1	)		(0.2	)
Recognized net actuarial (gain) loss		—			—			—
Net periodic benefit cost	$	16.3		$	18.4		$	20.8
Weighted-Average Assumptions used to Determine Net Periodic Benefit Cost
Discount rate		5.29	%		5.55	%		6.38	%
Initial health care rate of increase		7.50	%		7.30	%		7.80	%
Ultimate health care rate of increase		5.00	%		5.00	%		5.00	%
Year ultimate trend reached		2017			2015			2015

Impact of a one-percentage point change in the assumed health care cost trend rate

	One Percentage Point Increase		One Percentage Point Decrease
	(Dollars in millions)
Increase (Decrease) in
Total of service and interest cost components in 2011	$	0.8	$	(0.7	)
Accumulated postretirement benefit obligation as of December 31, 2011	$	17.7	$	(15.9	)

Expected postretirement benefit payments other than pensions

Year	Expected Employer Payments		Medicare Subsidy			Net Payments
	(Dollars in millions)
2012	$	32.0	$	(3.6	)	$	28.4
2013		32.1		(3.8	)		28.3
2014		32.0		(3.9	)		28.1
2015		31.7		(4.0	)		27.7
2016		31.2		(4.1	)		27.1
2017 to 2021		144.5		(22.0	)		122.5