Net Income Per Common Share (Tables)

3 Months Ended

Mar. 31, 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 March 31,
	2013		2012
Numerator:
Net income—basic and diluted	$	154	$	86
Denominator:
Weighted-average common shares outstanding	163,133		162,277
Effect of stock-based awards:
Nonvested shares	783		541
Stock options	1,008		327
Adjusted weighted-average shares	164,924		163,145
Earnings per share:
Basic	$	0.95	$	0.53
Diluted	0.94		0.53
Number of anti-dilutive stock-based awards	2,056		6,215