Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2020

Earnings Per Share [Abstract]

Schedule Of Earnings Per Share Basic And Diluted By Common Class [Table Text Block]

The following table sets forth the computation of basic and diluted earnings per share on net income (in millions, except per share information):

	2020		2019		2018
Earnings:
Net income (numerator for basic and diluted calculations)	$	415	$	870	$	716
Shares:
Weighted average outstanding shares (denominator for basic calculations)	65.4		62.7		63.7
Equivalent shares from outstanding stock awards	0.4		1.2		1.4
Diluted shares (denominator for diluted calculations)	65.8		63.9		65.1
Earnings per share:
Basic	$	6.35	$	13.88	$	11.25
Diluted	6.31		13.62		11.00