Share Owners' Equity (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Increase (Decrease) in Share Owners' Equity
Balance	$ 416	$ 524	$ 279	$ 771
Issuance of common stock		$ 1	$ 5	$ 1
Issuance of common stock (in shares)	1,225	6,928	504,635	39,107
Reissuance of common stock	$ 3	$ 1	$ 7	$ 3
Reissuance of common stock (in shares)	49,234	75,383	183,836	132,842
Treasury shares purchased				$ (100)
Treasury shares purchased (in shares)		599,760		4,109,256
Stock compensation	$ 4	$ 3	$ 9	$ 11
Net earnings	109	45	182	120
Other comprehensive income (loss)	(74)	29	(24)	(191)
Distributions to noncontrolling interests		(12)		(12)
Acquisitions of noncontrolling interest				(12)
Balance	$ 458	$ 591	$ 458	591
Payments for Repurchase of Common Stock				$ 100
Common Stock, Number of Shares, Par Value and Other Disclosures
Common stock, shares authorized	250,000,000		250,000,000
Common stock, par value (in dollars per share)	$ 0.01		$ 0.01
Shares of common stock issued (including treasury shares)	185,417,000	184,462,000	185,417,000	184,462,000	184,481,000
Treasury stock, shares	23,335,000	23,694,000	23,335,000	23,694,000	23,519,000
Common Stock
Increase (Decrease) in Share Owners' Equity
Balance	$ 2	$ 2	$ 2	$ 2
Balance	2	2	2	2
Capital in Excess of Par Value
Increase (Decrease) in Share Owners' Equity
Balance	3,074	3,056	3,064	3,066
Issuance of common stock		1	5	1
Stock compensation	4	3	9	11
Acquisitions of noncontrolling interest				(18)
Balance	3,078	3,060	3,078	3,060
Treasury Stock
Increase (Decrease) in Share Owners' Equity
Balance	(569)	(578)	(573)	(480)
Reissuance of common stock	3	1	7	3
Treasury shares purchased				(100)
Balance	(566)	(577)	(566)	(577)
Retained Earnings (Loss)
Increase (Decrease) in Share Owners' Equity
Balance	(238)	(369)	(305)	(440)
Net earnings	105	40	172	111
Balance	(133)	(329)	(133)	(329)
Accumulated Other Comprehensive Loss
Increase (Decrease) in Share Owners' Equity
Balance	(1,971)	(1,710)	(2,017)	(1,494)
Other comprehensive income (loss)	(62)	33	(16)	(183)
Balance	(2,033)	(1,677)	(2,033)	(1,677)
Non-controlling Interests
Increase (Decrease) in Share Owners' Equity
Balance	118	123	108	117
Net earnings	4	5	10	9
Other comprehensive income (loss)	(12)	(4)	(8)	(8)
Distributions to noncontrolling interests		(12)		(12)
Acquisitions of noncontrolling interest				6
Balance	$ 110	$ 112	$ 110	$ 112