Consolidating Financial Information (Details 2) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Mar. 31, 2012	Jun. 30, 2012	Jun. 30, 2011
Cash Flows from Operating Activities:
Total Cash Flows from Operating Activities			$ (451)	$ (669)
Cash Flows from Investing Activities:
Capital expenditures			(490)	(532)
Asset dispositions			9	100
Capital contributions			0
Increase in restricted cash			(18)	(51)
Other Transactions			(13)	0
Total Cash Flows from Investing Activities			(512)	(483)
Cash Flows from Financing Activities:
Short term debt and overdrafts incurred			34	64
Short term debt and overdrafts paid			(42)	(54)
Long term debt incurred			2,266	1,890
Long term debt paid			(1,810)	(1,432)
Proceeds from issuance of preferred stock			0	485
Preferred stock dividends paid	(7)	(7)	(15)	0
Common stock issued			0	7
Capital contributions and loans			0
Capital redemptions and loans			0
Intercompany dividends paid			0	0
Transactions with minority interests in subsidiaries			(27)	(14)
Debt related costs and other transactions			(63)	(19)
Total Cash Flows from Financing Activities			343	927
Effect of exchange rate changes on cash and cash equivalents			4	24
Net Change in Cash and Cash Equivalents			(616)	(201)
Cash and Cash Equivalents at Beginning of the Period		2,772	2,772	2,005
Cash and Cash Equivalents at End of the Period	2,156		2,156	1,804
Parent Company [Member]
Cash Flows from Operating Activities:
Total Cash Flows from Operating Activities			162	(337)
Cash Flows from Investing Activities:
Capital expenditures			(111)	(118)
Asset dispositions			1	98
Capital contributions			0
Increase in restricted cash			0	0
Other Transactions			4
Total Cash Flows from Investing Activities			(106)	(20)
Cash Flows from Financing Activities:
Short term debt and overdrafts incurred			0	0
Short term debt and overdrafts paid			0	(6)
Long term debt incurred			800	0
Long term debt paid			(756)	(350)
Proceeds from issuance of preferred stock				485
Preferred stock dividends paid			(15)
Common stock issued				7
Capital contributions and loans			(55)
Capital redemptions and loans			19
Intercompany dividends paid			0	0
Transactions with minority interests in subsidiaries			(17)	0
Debt related costs and other transactions			(63)	(2)
Total Cash Flows from Financing Activities			(87)	134
Effect of exchange rate changes on cash and cash equivalents			0	0
Net Change in Cash and Cash Equivalents			(31)	(223)
Cash and Cash Equivalents at Beginning of the Period		916	916	792
Cash and Cash Equivalents at End of the Period	885		885	569
Guarantor Subsidiaries [Member]
Cash Flows from Operating Activities:
Total Cash Flows from Operating Activities			(17)	15
Cash Flows from Investing Activities:
Capital expenditures			(7)	(13)
Asset dispositions			0	0
Capital contributions			0
Increase in restricted cash			0	0
Other Transactions			0
Total Cash Flows from Investing Activities			(7)	(13)
Cash Flows from Financing Activities:
Short term debt and overdrafts incurred			0	0
Short term debt and overdrafts paid			0	(2)
Long term debt incurred			0	0
Long term debt paid			0	0
Proceeds from issuance of 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	0
Total Cash Flows from Financing Activities			0	(2)
Effect of exchange rate changes on cash and cash equivalents			1	1
Net Change in Cash and Cash Equivalents			(23)	1
Cash and Cash Equivalents at Beginning of the Period		108	108	38
Cash and Cash Equivalents at End of the Period	85		85	39
Non-Guarantor Subsidiaries [Member]
Cash Flows from Operating Activities:
Total Cash Flows from Operating Activities			(447)	(233)
Cash Flows from Investing Activities:
Capital expenditures			(374)	(401)
Asset dispositions			8	2
Capital contributions			(38)
Increase in restricted cash			(18)	(51)
Other Transactions			(17)
Total Cash Flows from Investing Activities			(439)	(450)
Cash Flows from Financing Activities:
Short term debt and overdrafts incurred			34	64
Short term debt and overdrafts paid			(42)	(46)
Long term debt incurred			1,466	1,890
Long term debt paid			(1,054)	(1,082)
Proceeds from issuance of preferred stock				0
Preferred stock dividends paid			0
Common stock issued				0
Capital contributions and loans			93
Capital redemptions and loans			(19)
Intercompany dividends paid			(147)	(114)
Transactions with minority interests in subsidiaries			(10)	(14)
Debt related costs and other transactions			0	(17)
Total Cash Flows from Financing Activities			321	681
Effect of exchange rate changes on cash and cash equivalents			3	23
Net Change in Cash and Cash Equivalents			(562)	21
Cash and Cash Equivalents at Beginning of the Period		1,748	1,748	1,175
Cash and Cash Equivalents at End of the Period	1,186		1,186	1,196
Consolidating Entries and Eliminations [Member]
Cash Flows from Operating Activities:
Total Cash Flows from Operating Activities			(149)	(114)
Cash Flows from Investing Activities:
Capital expenditures			2	0
Asset dispositions			0	0
Capital contributions			38
Increase in restricted cash			0	0
Other Transactions			0
Total Cash Flows from Investing Activities			40	0
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 preferred stock				0
Preferred stock dividends paid			0
Common stock issued				0
Capital contributions and loans			(38)
Capital redemptions and loans			0
Intercompany dividends paid			147	114
Transactions with minority interests in subsidiaries			0	0
Debt related costs and other transactions			0	0
Total Cash Flows from Financing Activities			109	114
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	0
Cash and Cash Equivalents at End of the Period	$ 0		$ 0	$ 0