Share Owners' Equity (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Increase (Decrease) in Share Owners' Equity
Balance	$ 401	$ 564
Reissuance of common stock	$ 2	$ 2
Reissuance of common stock (in shares)	200,000	200,000
Stock compensation	$ 4	$ 1
Stock compensation (in shares)	300,000	800,000
Net earnings (loss)	$ (91)	$ 55
Other comprehensive income (loss)	(52)	(536)
Dividends declared		(8)
Other	(2)	(2)
Balance	$ 262	$ 76
Authorization of common stock
Shares of common stock issued (including treasury shares)	250,000,000	250,000,000	250,000,000
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01	$ 0.01
Shares of common stock issued (including treasury shares)	189,796,000	189,210,000	189,305,000
Treasury shares	31,884,000	32,639,000	31,911,000
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	3,129	3,130
Reissuance of common stock	(2)	(3)
Stock compensation	4	1
Other	19
Balance	3,150	3,128
Treasury Stock
Increase (Decrease) in Share Owners' Equity
Balance	(714)	(733)
Reissuance of common stock	4	5
Other	(2)	(2)
Balance	(712)	(730)
Retained Earnings (Loss)
Increase (Decrease) in Share Owners' Equity
Balance	152	(89)
Net earnings (loss)	(97)	50
Dividends declared		(8)
Other	(19)
Balance	36	(47)
Accumulated Other Comprehensive Loss.
Increase (Decrease) in Share Owners' Equity
Balance	(2,272)	(1,843)
Other comprehensive income (loss)	(48)	(527)
Balance	(2,320)	(2,370)
Non-controlling Interests
Increase (Decrease) in Share Owners' Equity
Balance	104	97
Net earnings (loss)	6	5
Other comprehensive income (loss)	(4)	(9)
Balance	$ 106	$ 93