Net Income Per Common Share (Tables)

6 Months Ended

Jun. 30, 2016

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 June 30,				Six months ended June 30,
	2016		2015		2016		2015
Numerator:
Net income—basic and diluted	$	123	$	176	$	311	$	304
Denominator:
Basic weighted-average common shares outstanding	164.5		164.1		164.4		164.1
Effect of share-based awards:
Stock options	1.1		0.9		1.1		0.9
Nonvested shares	0.9		0.5		0.8		0.5
Diluted weighted-average shares	166.5		165.5		166.3		165.5
Earnings per share:
Basic	$	0.75	$	1.07	$	1.89	$	1.85
Diluted	0.74		1.06		1.87		1.84
Number of anti-dilutive share-based awards:	0.3		0.7		0.4		0.7