Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2020

Earnings Per Share [Abstract]

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

The following table presents approximate amounts of stock options and performance contingent shares excluded from the calculation of common equivalent shares (in thousands):

	Three months ended March 31,
	2020	2019
Excluded from common equivalent shares:
Stock options	1,060	544
Performance contingent shares	150	109

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

	Three months ended March 31,
	2020			2019
Earnings:
Net income (loss)	$	(88	)	$	170
Shares:
Weighted average outstanding shares	62			63
Equivalent shares from outstanding stock options	1			1
Denominator for diluted calculation	63			64
Earnings per share:
Basic	$	(1.41	)	$	2.70
Diluted	$	(1.41	)	$	2.65