Consolidating Financial Information (Details 2) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Cash Flows from Operating Activities:
Total Cash Flows from Operating Activities	$ (754)	$ (433)
Cash Flows from Investing Activities:
Capital expenditures	(276)	(284)
Asset dispositions	0	2
Capital contributions	0
Increase in restricted cash	(21)	(68)
Other Transactions	2	0
Total Cash Flows from Investing Activities	(295)	(350)
Cash Flows from Financing Activities:
Short term debt and overdrafts incurred	57	16
Short term debt and overdrafts paid	(31)	(21)
Long term debt incurred	1,107	917
Long term debt paid	(783)	(423)
Proceeds from Issuance of Convertible Preferred Stock	0	485
Preferred stock dividends paid	(7)	0
Common stock issued	0	4
Capital contributions and loans	0
Capital redemptions and loans	0
Intercompany dividends paid	0	0
Transactions with minority interests in subsidiaries	(3)	(4)
Debt related costs and other transactions	(14)	0
Total Cash Flows from Financing Activities	326	974
Effect of exchange rate changes on cash and cash equivalents	34	19
Net Change in Cash and Cash Equivalents	(689)	210
Cash and Cash Equivalents at Beginning of the Period	2,772	2,005
Cash and Cash Equivalents at End of the Period	2,083	2,215
Parent Company [Member]
Cash Flows from Operating Activities:
Total Cash Flows from Operating Activities	(159)	(115)
Cash Flows from Investing Activities:
Capital expenditures	(73)	(74)
Asset dispositions		0
Capital contributions	0
Increase in restricted cash	(1)	(1)
Other Transactions	4
Total Cash Flows from Investing Activities	(70)	(75)
Cash Flows from Financing Activities:
Short term debt and overdrafts incurred	0	0
Short term debt and overdrafts paid	0	(3)
Long term debt incurred	700	0
Long term debt paid	(653)	0
Proceeds from Issuance of Convertible Preferred Stock		485
Preferred stock dividends paid	(7)
Common stock issued		4
Capital contributions and loans	(30)
Capital redemptions and loans	19
Intercompany dividends paid	0	0
Transactions with minority interests in subsidiaries	0	0
Debt related costs and other transactions	(14)
Total Cash Flows from Financing Activities	15	486
Effect of exchange rate changes on cash and cash equivalents	0	0
Net Change in Cash and Cash Equivalents	(214)	296
Cash and Cash Equivalents at Beginning of the Period	916	792
Cash and Cash Equivalents at End of the Period	702	1,088
Guarantor Subsidiaries [Member]
Cash Flows from Operating Activities:
Total Cash Flows from Operating Activities	(19)	(1)
Cash Flows from Investing Activities:
Capital expenditures	(5)	(8)
Asset dispositions		0
Capital contributions	0
Increase in restricted cash	0	0
Other Transactions	0
Total Cash Flows from Investing Activities	(5)	(8)
Cash Flows from Financing Activities:
Short term debt and overdrafts incurred	0	0
Short term debt and overdrafts paid	0	(5)
Long term debt incurred	0	0
Long term debt paid	0	0
Proceeds from Issuance of Convertible Preferred Stock		0
Preferred stock dividends paid	0
Common stock issued		0
Capital contributions and loans	0
Capital redemptions and loans	0
Intercompany dividends paid	0	0
Transactions with minority interests in subsidiaries	0	0
Debt related costs and other transactions	0
Total Cash Flows from Financing Activities	0	(5)
Effect of exchange rate changes on cash and cash equivalents	1	0
Net Change in Cash and Cash Equivalents	(23)	(14)
Cash and Cash Equivalents at Beginning of the Period	108	38
Cash and Cash Equivalents at End of the Period	85	24
Non-Guarantor Subsidiaries [Member]
Cash Flows from Operating Activities:
Total Cash Flows from Operating Activities	(572)	(259)
Cash Flows from Investing Activities:
Capital expenditures	(198)	(199)
Asset dispositions		2
Capital contributions	(8)
Increase in restricted cash	(20)	(67)
Other Transactions	(2)
Total Cash Flows from Investing Activities	(228)	(264)
Cash Flows from Financing Activities:
Short term debt and overdrafts incurred	57	16
Short term debt and overdrafts paid	(31)	(13)
Long term debt incurred	407	917
Long term debt paid	(130)	(423)
Proceeds from Issuance of Convertible Preferred Stock		0
Preferred stock dividends paid	0
Common stock issued		0
Capital contributions and loans	38
Capital redemptions and loans	(19)
Intercompany dividends paid	(4)	(61)
Transactions with minority interests in subsidiaries	(3)	(4)
Debt related costs and other transactions	0
Total Cash Flows from Financing Activities	315	432
Effect of exchange rate changes on cash and cash equivalents	33	19
Net Change in Cash and Cash Equivalents	(452)	(72)
Cash and Cash Equivalents at Beginning of the Period	1,748	1,175
Cash and Cash Equivalents at End of the Period	1,296	1,103
Consolidating Entries and Eliminations [Member]
Cash Flows from Operating Activities:
Total Cash Flows from Operating Activities	(4)	(58)
Cash Flows from Investing Activities:
Capital expenditures	0	(3)
Asset dispositions		0
Capital contributions	8
Increase in restricted cash	0	0
Other Transactions	0
Total Cash Flows from Investing Activities	8	(3)
Cash Flows from Financing Activities:
Short term debt and overdrafts incurred	0	0
Short term debt and overdrafts paid	0	0
Long term debt incurred	0	0
Long term debt paid	0	0
Proceeds from Issuance of Convertible Preferred Stock		0
Preferred stock dividends paid	0
Common stock issued		0
Capital contributions and loans	(8)
Capital redemptions and loans	0
Intercompany dividends paid	4	61
Transactions with minority interests in subsidiaries	0	0
Debt related costs and other transactions	0
Total Cash Flows from Financing Activities	(4)	61
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