Consolidating Financial Information (Details 2) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Cash Flows from Operating Activities:
Total Cash Flows from Operating Activities	$ (937)	$ (754)
Cash Flows from Investing Activities:
Capital expenditures	(271)	(276)
Asset dispositions	5	0
Government grants received	4	0
Increase in restricted cash	(23)	(21)
Capital contributions and loans incurred	0	0
Capital redemptions and loans paid	0	0
Other transactions	2	2
Total Cash Flows from Investing Activities	(283)	(295)
Cash Flows from Financing Activities:
Short term debt and overdrafts incurred	30	57
Short term debt and overdrafts paid	(24)	(31)
Long term debt incurred	1,558	1,107
Long term debt paid	(78)	(783)
Common stock issued	2	0
Preferred stock dividends paid	(7)	(7)
Capital contributions and loans incurred	0	0
Capital redemptions and loans paid	0	0
Intercompany dividends paid	0	0
Transactions with minority interests in subsidiaries	(4)	(3)
Debt related costs and other transactions	(15)	(14)
Total Cash Flows from Financing Activities	1,462	326
Effect of exchange rate changes on cash and cash equivalents	(137)	34
Net Change in Cash and Cash Equivalents	105	(689)
Cash and Cash Equivalents at Beginning of the Period	2,281	2,772
Cash and Cash Equivalents at End of the Period	2,386	2,083
Parent Company
Cash Flows from Operating Activities:
Total Cash Flows from Operating Activities	(597)	(209)
Cash Flows from Investing Activities:
Capital expenditures	(75)	(73)
Asset dispositions	0
Government grants received	0
Increase in restricted cash	0	(1)
Capital contributions and loans incurred	0	(30)
Capital redemptions and loans paid	208	19
Other transactions	0	4
Total Cash Flows from Investing Activities	133	(81)
Cash Flows from Financing Activities:
Short term debt and overdrafts incurred	0	0
Short term debt and overdrafts paid	(96)	0
Long term debt incurred	900	700
Long term debt paid	(5)	(653)
Common stock issued	2
Preferred stock dividends paid	(7)	(7)
Capital contributions and loans incurred	170	50
Capital redemptions and loans paid	(203)	0
Intercompany dividends paid	0	0
Transactions with minority interests in subsidiaries	0	0
Debt related costs and other transactions	(15)	(14)
Total Cash Flows from Financing Activities	746	76
Effect of exchange rate changes on cash and cash equivalents	0	0
Net Change in Cash and Cash Equivalents	282	(214)
Cash and Cash Equivalents at Beginning of the Period	802	916
Cash and Cash Equivalents at End of the Period	1,084	702
Guarantor Subsidiaries
Cash Flows from Operating Activities:
Total Cash Flows from Operating Activities	(2)	(18)
Cash Flows from Investing Activities:
Capital expenditures	(5)	(5)
Asset dispositions	0
Government grants received	0
Increase in restricted cash	0	0
Capital contributions and loans incurred	0	0
Capital redemptions and loans paid	0	0
Other transactions	0	0
Total Cash Flows from Investing Activities	(5)	(5)
Cash Flows from Financing Activities:
Short term debt and overdrafts incurred	8	0
Short term debt and overdrafts paid	0	0
Long term debt incurred	0	0
Long term debt paid	0	0
Common stock issued	0
Preferred stock dividends paid	0	0
Capital contributions and loans incurred	0	0
Capital redemptions and loans paid	0	0
Intercompany dividends paid	0	0
Transactions with minority interests in subsidiaries	0	0
Debt related costs and other transactions	0	0
Total Cash Flows from Financing Activities	8	0
Effect of exchange rate changes on cash and cash equivalents	(2)	1
Net Change in Cash and Cash Equivalents	(1)	(22)
Cash and Cash Equivalents at Beginning of the Period	68	112
Cash and Cash Equivalents at End of the Period	67	90
Non-Guarantor Subsidiaries
Cash Flows from Operating Activities:
Total Cash Flows from Operating Activities	(334)	(523)
Cash Flows from Investing Activities:
Capital expenditures	(192)	(198)
Asset dispositions	5
Government grants received	4
Increase in restricted cash	(23)	(20)
Capital contributions and loans incurred	(170)	(50)
Capital redemptions and loans paid	203	0
Other transactions	2	(2)
Total Cash Flows from Investing Activities	(171)	(270)
Cash Flows from Financing Activities:
Short term debt and overdrafts incurred	118	57
Short term debt and overdrafts paid	(24)	(31)
Long term debt incurred	658	407
Long term debt paid	(73)	(130)
Common stock issued	0
Preferred stock dividends paid	0	0
Capital contributions and loans incurred	0	30
Capital redemptions and loans paid	(208)	(19)
Intercompany dividends paid	(3)	(4)
Transactions with minority interests in subsidiaries	(4)	(3)
Debt related costs and other transactions	0	0
Total Cash Flows from Financing Activities	464	307
Effect of exchange rate changes on cash and cash equivalents	(135)	33
Net Change in Cash and Cash Equivalents	(176)	(453)
Cash and Cash Equivalents at Beginning of the Period	1,411	1,744
Cash and Cash Equivalents at End of the Period	1,235	1,291
Consolidating Entries and Eliminations
Cash Flows from Operating Activities:
Total Cash Flows from Operating Activities	(4)	(4)
Cash Flows from Investing Activities:
Capital expenditures	1	0
Asset dispositions	0
Government grants received	0
Increase in restricted cash	0	0
Capital contributions and loans incurred	170	80
Capital redemptions and loans paid	(411)	(19)
Other transactions	0	0
Total Cash Flows from Investing Activities	(240)	61
Cash Flows from Financing Activities:
Short term debt and overdrafts incurred	(96)	0
Short term debt and overdrafts paid	96	0
Long term debt incurred	0	0
Long term debt paid	0	0
Common stock issued	0
Preferred stock dividends paid	0	0
Capital contributions and loans incurred	(170)	(80)
Capital redemptions and loans paid	411	19
Intercompany dividends paid	3	4
Transactions with minority interests in subsidiaries	0	0
Debt related costs and other transactions	0	0
Total Cash Flows from Financing Activities	244	(57)
Effect of exchange rate changes on cash and cash equivalents	0	0
Net Change in Cash and Cash Equivalents	0	0
Cash and Cash Equivalents at Beginning of the Period	0	0
Cash and Cash Equivalents at End of the Period	$ 0	$ 0