Net Income Per Common Share (Tables)

9 Months Ended

Sep. 30, 2021

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,
	2021		2020		2021		2020
Numerator:
Net income—basic and diluted	$	153	$	484	$	1,476	$	167
Denominator:
Basic weighted-average common shares outstanding	161.1		160.9		161.1		161.3
Effect of share-based awards:
Stock options	1.2		0.5		1.1		0.7
Nonvested shares	0.6		0.6		0.6		0.5
Diluted weighted-average shares	162.9		162.0		162.8		162.5
Earnings per share:
Basic	$	0.95	$	3.01	$	9.16	$	1.03
Diluted	$	0.94	$	2.99	$	9.07	$	1.03
Number of anti-dilutive share-based awards	0.4		1.4		0.9		1.4