Share Owners' Equity (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Increase (Decrease) in Share Owners' Equity
Balance	$ 564	$ 900
Reissuance of common stock	$ 2	$ 5
Reissuance of common stock (in shares)	200,000	100,000
Treasury shares purchased		$ (38)
Treasury shares purchased (in shares)		2,100,000
Stock compensation	$ 1	$ 4
Stock compensation (in shares)	800,000	500,000
Net earnings	$ 55	$ 84
Other comprehensive income (loss)	(536)	60
Dividends declared	(8)
Other	(2)	(5)
Balance	$ 76	$ 1,010
Authorization of common stock
Common stock, shares authorized	250,000,000
Common stock, par value (in dollars per share)	$ 0.01
Shares of common stock issued (including treasury shares)	189,210,000	188,348,000	188,447,000
Treasury stock, shares	32,639,000	33,117,000	32,573,000
Common Stock
Increase (Decrease) in Share Owners' Equity
Balance	$ 2	$ 2
Balance	2	2
Capital in Excess of Par Value
Increase (Decrease) in Share Owners' Equity
Balance	3,130	3,124
Reissuance of common stock	(3)	2
Stock compensation	1	4
Balance	3,128	3,130
Treasury Stock
Increase (Decrease) in Share Owners' Equity
Balance	(733)	(705)
Reissuance of common stock	5	3
Treasury shares purchased		(38)
Other	(2)	(5)
Balance	(730)	(745)
Retained Earnings (accumulated deficit)
Increase (Decrease) in Share Owners' Equity
Balance	(89)	333
Net earnings	50	79
Dividends declared	(8)
Balance	(47)	412
Accumulated Other Comprehensive Loss.
Increase (Decrease) in Share Owners' Equity
Balance	(1,843)	(1,968)
Other comprehensive income (loss)	(527)	57
Balance	(2,370)	(1,911)
Non-controlling Interests
Increase (Decrease) in Share Owners' Equity
Balance	97	114
Net earnings	5	5
Other comprehensive income (loss)	(9)	3
Balance	$ 93	$ 122