Net Income Per Common Share (Tables)

6 Months Ended

Jun. 30, 2013

Earnings Per Share [Abstract]

Calculations For Basic And Diluted Earnings Per Share

The table shows calculations for basic and diluted earnings per share:

(Dollars in millions except share data in thousands)	Three months ended June 30,				Six months ended June 30,
	2013		2012		2013		2012
Numerator:
Net income—basic and diluted	$	110	$	32	$	264	$	118
Denominator:
Weighted-average common shares outstanding	163,512		162,425		163,323		162,351
Effect of stock-based awards:
Stock options	1,239		419		1,098		375
Nonvested shares	691		670		730		602
Adjusted weighted-average shares	165,442		163,514		165,151		163,328
Earnings per share:
Basic	$	0.67	$	0.20	$	1.62	$	0.73
Diluted	0.66		0.20		1.60		0.72
Number of anti-dilutive stock-based awards	340		6,059		393		6,072