Severance and Leased Real Estate (Tables)

12 Months Ended

Dec. 31, 2014

Restructuring and Related Activities [Abstract]

Schedule of changes in accrued liabilities for severance expenses and leased real estate

Changes in our accrued liabilities for severance expenses and leased real estate were as follows:

	Severance			Real Estate
	(Dollars in millions)
Balance at December 31, 2012	$	17		131
Accrued to expense	31			—
Payments, net	(31		)	(16	)
Reversals and adjustments	—			(2	)
Balance at December 31, 2013	17			113
Accrued to expense	87			1
Payments, net	(78		)	(16	)
Reversals and adjustments	—			(2	)
Balance at December 31, 2014	$	26		96