Net Income Per Common Share (Tables)

9 Months Ended

Sep. 30, 2014

Earnings Per Share [Abstract]

Calculations For Basic And Diluted Earnings Per Share

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

(In millions except per share data)	Three months ended September 30,				Nine months ended September 30,
	2014		2013		2014		2013
Numerator:
Net income—basic and diluted	$	183	$	131	$	358	$	395
Denominator:
Basic weighted-average common shares   outstanding	163.5		163.7		163.5		163.5
Effect of stock-based awards:
Stock options	0.9		1.2		0.9		1.1
Nonvested shares	0.6		0.7		0.6		0.7
Adjusted diluted weighted-average shares	165.0		165.6		165.0		165.3
Earnings per share:
Basic	$	1.12	$	0.80	$	2.19	$	2.42
Diluted	1.11		0.79		2.17		2.39
Number of anti-dilutive share-based awards	0.7		0.3		0.7		0.4