Consolidated Statements Of Changes in Equity (USD $) In Millions, except Share data	Total	Common Stock	Treasury Stock	Additional Paid-in Capital	(Accumulated Deficit) / Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Noncontrolling Interests	Parent Company
Beginning Balance at Dec. 31, 2009		$ 7	$ (126)	$ 6,868	$ 650	$ (2,724)	$ 4,205
Beginning Balance (Shares) at Dec. 31, 2009		677,200,000	9,500,000
Net income (loss)	1,059	0	0	0	9	0	1,050
Change in fair value of available-for-sale securities, net of income tax	(5)	0	0	0	0	(5)	0	(5)
Foreign currency translation adjustments, net of income tax	610	0	0	0	0	486	124	486
Change in unfunded pension obligation, net of income tax	(88)	0	0	0	0	(22)	(66)	(22)
Change in derivative fair value, including a reclassification to earnings, net of income tax	(80)	0	0	0	0	(80)	0	(80)
Other comprehensive income (loss)	437							379
Total comprehensive income	1,496							388
Cumulative effect of consolidation of entities under variable interest entity accounting guidance		0	0	0	47	38	(15)
Cumulative effect of deconsolidation of entities under variable interest entity accounting guidance		0	0	0	1	0	0
Capital contributions from noncontrolling interests		0	0	0	0	0	35
Distributions to noncontrolling interests		0	0	0	0	0	(1,220)
Disposition of businesses		0	0	0	0	0	208
Issuance of common stock		1	0	1,566	0	0	0
Issuance of common stock (shares)		125,500,000	0
Acquisition of treasury stock		0	(99)	0	0	0	0
Acquisition of treasury stock (shares)		0	(8,400,000)
Issuance of common stock under benefit plans and exercise of stock options, net of income tax		0	9	35	0	0	0
Issuance of common stock under benefit plans and exercise of stock options, net of income tax (shares)		2,200,000	(600,000)
Changes in the carrying amount of redeemable stock of subsidiaries		0	0	0	7	0	0
Acquisition of subsidiary shares from noncontrolling interests		0	0	(25)	0	0	5
Ending Balance at Dec. 31, 2010		8	(216)	8,444	620	(2,383)	3,940
Ending Balance (Shares) at Dec. 31, 2010		804,900,000	17,300,000
Net income (loss)	1,530	0	0	0	58	0	1,472
Change in fair value of available-for-sale securities, net of income tax	(1)	0	0	0	0	(1)	0	(1)
Foreign currency translation adjustments, net of income tax	(296)	0	0	0	0	(143)	(153)	(143)
Change in unfunded pension obligation, net of income tax	(210)	0	0	0	0	(41)	(169)	(41)
Change in derivative fair value, including a reclassification to earnings, net of income tax	(242)	0	0	0	0	(190)	(52)	(190)
Other comprehensive income (loss)	(749)							(375)
Total comprehensive income	781							(317)
Capital contributions from noncontrolling interests		0	0	0	0	0	8
Distributions to noncontrolling interests		0	0	0	0	0	(1,254)
Disposition of businesses		0	0	0	0	0	27
Issuance of common stock		0	0	0	0	0	0
Issuance of common stock (shares)		0	0
Acquisition of treasury stock		0	(279)	0	0	0	0
Acquisition of treasury stock (shares)	24,790,384	0	(25,500,000)
Issuance of common stock under benefit plans and exercise of stock options, net of income tax		0	6	44	0	0	0
Issuance of common stock under benefit plans and exercise of stock options, net of income tax (shares)		2,700,000	(400,000)
Stock compensation		0	0	0	0	0	0
Net gain on sale of subsidiary shares to noncontrolling interests	19
Sale of subsidiary shares to noncontrolling interests		0	0	19	0	0	16
Acquisition of subsidiary shares from noncontrolling interests	0	0	0	0	0	0	2
Ending Balance at Dec. 31, 2011	9,729	8	(489)	8,507	678	(2,758)	3,783
Ending Balance (Shares) at Dec. 31, 2011		807,600,000	42,400,000
Net income (loss)	(357)	0	0	0	(912)	0	555
Change in fair value of available-for-sale securities, net of income tax	0							0
Foreign currency translation adjustments, net of income tax	(210)	0	0	0	0	(90)	(120)	(90)
Change in unfunded pension obligation, net of income tax	(564)	0	0	0	0	(125)	(439)	(125)
Change in derivative fair value, including a reclassification to earnings, net of income tax	43	0	0	0	0	53	(10)	53
Other comprehensive income (loss)	(731)							(162)
Total comprehensive income	(1,088)							(1,074)
Capital contributions from noncontrolling interests		0	0	0	0	0	30
Distributions to noncontrolling interests		0	0	0	0	0	(802)
Disposition of businesses		0	0	0	0	0	44
Acquisition of treasury stock		0	(301)	0	0	0	0
Acquisition of treasury stock (shares)		0	(24,800,000)
Issuance of common stock under benefit plans and exercise of stock options, net of income tax		0	10	37	0	0	0
Issuance of common stock under benefit plans and exercise of stock options, net of income tax (shares)		3,100,000	(800,000)
Net gain on sale of subsidiary shares to noncontrolling interests	7
Common Stock Dividends		0	0	(30)	(30)	0	0
Sale of subsidiary shares to noncontrolling interests		0	0	7	0	0	5
Acquisition of subsidiary shares from noncontrolling interests	4	0	0	4	0	0	(13)
Ending Balance at Dec. 31, 2012	$ 7,514	$ 8	$ (780)	$ 8,525	$ (264)	$ (2,920)	$ 2,945
Ending Balance (Shares) at Dec. 31, 2012		810,700,000	66,400,000