Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2013

Commitments and Contingencies Disclosure [Abstract]

Schedule of capital lease activity

The tables below summarize our capital lease activity:

	Years Ended December 31,
	2013		2012
	(Dollars in millions)
Assets acquired through capital leases	$	12	209
Depreciation expense	136		150
Cash payments towards capital leases	119		113

	December 31,
	2013		2012
	(Dollars in millions)
Assets included in property, plant and equipment	$	877	$	893
Accumulated depreciation	338		229

Schedule of future annual minimum payments under capital lease arrangements

The future annual minimum payments under capital lease arrangements as of December 31, 2013 were as follows:

	Future Minimum Payments
	(Dollars in millions)
Capital lease obligations:
2014	$	144
2015	111
2016	75
2017	70
2018	68
2019 and thereafter	308
Total minimum payments	776
Less: amount representing interest and executory costs	(206		)
Present value of minimum payments	570
Less: current portion	(109		)
Long-term portion	$	461

Schedule of future rental commitments for operating leases

At December 31, 2013, our future rental commitments for operating leases were as follows:

	Future Minimum Payments
	(Dollars in millions)
2014	$	297
2015	274
2016	252
2017	232
2018	209
2019 and thereafter	1,391
Total future minimum payments (1)	$	2,655

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(1) Minimum payments have not been reduced by minimum sublease rentals of $104 million due in the future under non-cancelable subleases.