Quarterly Financial Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2012

Quarterly Financial Data (Unaudited)

Schedule of quarterly financial information

	Quarterly Financial Data
	Successor
	First Quarter		Second Quarter		Third Quarter		Fourth Quarter		Twelve Months Total
	(Dollars in millions)
2012
Operating revenues	$	2,260		2,195		2,183		2,210		8,848
Operating income		466		455		459		525		1,905
Income tax expense (benefit)		136		113		133		160		542
Net income (loss)		218		178		212		241		849

	Quarterly Financial Data
	Predecessor		Successor
	First Quarter		Second Quarter		Third Quarter		Fourth Quarter		Nine Months Total
	(Dollars in millions)
2011
Operating revenues	$	2,268		2,231		2,190		2,214		6,635
Operating income		638		370		412		417		1,199
Income tax expense (benefit)		191		116		118		115		349
Net income (loss)		299		165		199		179		543