Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Numerator:
Net earnings (loss) attributable to the Company	$ 328	$ (575)	$ 278	$ (430)
Denominator (in thousands):
Denominator for basic earnings per share - weighted average shares outstanding (in shares)	157,073,000	155,536,000	156,650,000	155,083,000
Effect of dilutive securities:
Stock options and other (in shares)	2,226,000		1,788,000
Denominator for diluted earnings per share - adjusted weighted average shares outstanding (in shares)	159,299,000	155,536,000	158,438,000	155,083,000
Basic earnings per share:
Net earnings (loss) from continuing operations attributable to the Company (in dollars per share)	$ 2.09	$ (3.69)	$ 1.77	$ (2.77)
Loss from discontinued operations (in dollars per share)				(0.01)
Net earnings (loss) (in dollars per share)	2.09	(3.69)	1.77	(2.78)
Diluted earnings per share:
Net earnings (loss) from continuing operations attributable to the Company (in dollars per share)	2.06	(3.69)	1.76	(2.77)
Loss from discontinued operations (in dollars per share)				(0.01)
Net earnings (loss) (in dollars per share)	$ 2.06	$ (3.69)	$ 1.76	$ (2.78)
Weighted average shares of common stock attributable to options not included in diluted earnings per share (in shares)	1,564,207	2,446,932	2,616,538	1,848,974