Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2012

Commitments and Contingencies

Summary of the entity's capital lease activity

	Successor				Predecessor
	Year Ended December 31, 2012		Nine Months Ended December 31, 2011		Three Months Ended March 31, 2011		Year Ended December 31, 2010
	(Dollars in millions)
Assets acquired through capital leases	$	12		8		28		202
Depreciation expense		93		73		20		51
Cash payments towards capital leases		77		59		18		45

	Successor
	December 31, 2012		December 31, 2011
Assets included in property, plant and equipment	$	399		401
Accumulated depreciation		156		75

Schedule of future annual minimum payments under capital lease arrangements

	Future Minimum Payments
	(Dollars in millions)
Capital lease obligations:
2013	$	88
2014		73
2015		43
2016		10
2017		6
2018 and thereafter		24
Total minimum payments		244
Less: amount representing interest and executory costs		(39	)
Present value of minimum payments		205
Less: current portion		(75	)
Long-term portion	$	130

Schedule of future minimum payments under operating leases

	Future Minimum Payments
	(Dollars in millions)
Operating leases:
2013	$	177
2014		149
2015		124
2016		102
2017		94
2018 and thereafter		575
Total future minimum payments(1)	$	1,221

(1)

Minimum payments have not been reduced by minimum sublease rentals of $106 million due in the future under non-cancelable subleases.