Consolidating Financial Information (Details 2) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Cash Flows from Operating Activities:
Total Cash Flows from Operating Activities	$ (462)	$ (451)
Cash Flows from Investing Activities:
Capital Expenditures	(493)	(490)
Asset Dispositions (Note 3)	7	9
Government Grants Received	4	0
Increase in Restricted Cash	(8)	(18)
Short Term Securities Acquired	(60)	(21)
Short Term Securities Redeemed	48	4
Capital Contributions and Loans Incurred	0	0
Capital Redemptions and Loans Paid	0	0
Other Transactions	0	4
Total Cash Flows from Investing Activities	(502)	(512)
Cash Flows from Financing Activities:
Short Term Debt and Overdrafts Incurred	29	34
Short Term Debt and Overdrafts Paid	(51)	(42)
Long Term Debt Incurred	2,115	2,266
Long Term Debt Paid	(639)	(1,810)
Common Stock Issued	5	0
Preferred Stock Dividends Paid	(15)	(15)
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	(8)	(27)
Debt Related Costs and Other Transactions	(16)	(63)
Total Cash Flows from Financing Activities	1,420	343
Effect of Exchange Rate Changes on Cash and Cash Equivalents	(173)	4
Net Change in Cash and Cash Equivalents	283	(616)
Cash and Cash Equivalents at Beginning of the Period	2,281	2,772
Cash and Cash Equivalents at End of the Period	2,564	2,156
Parent Company
Cash Flows from Operating Activities:
Total Cash Flows from Operating Activities	(439)	12
Cash Flows from Investing Activities:
Capital Expenditures	(128)	(111)
Asset Dispositions (Note 3)	2	1
Government Grants Received	0
Increase in Restricted Cash	0	0
Short Term Securities Acquired	0	0
Short Term Securities Redeemed	0	0
Capital Contributions and Loans Incurred	(61)	(55)
Capital Redemptions and Loans Paid	214	19
Other Transactions		4
Total Cash Flows from Investing Activities	27	(142)
Cash Flows from Financing Activities:
Short Term Debt and Overdrafts Incurred	0	0
Short Term Debt and Overdrafts Paid	(71)	0
Long Term Debt Incurred	900	800
Long Term Debt Paid	(7)	(756)
Common Stock Issued	5
Preferred Stock Dividends Paid	(15)	(15)
Capital Contributions and Loans Incurred	170	150
Capital Redemptions and Loans Paid	(203)	0
Intercompany Dividends Paid	0	0
Transactions with Minority Interests in Subsidiaries	0	(17)
Debt Related Costs and Other Transactions	(16)	(63)
Total Cash Flows from Financing Activities	763	99
Effect of Exchange Rate Changes on Cash and Cash Equivalents	0	0
Net Change in Cash and Cash Equivalents	351	(31)
Cash and Cash Equivalents at Beginning of the Period	802	916
Cash and Cash Equivalents at End of the Period	1,153	885
Guarantor Subsidiaries
Cash Flows from Operating Activities:
Total Cash Flows from Operating Activities	(52)	(21)
Cash Flows from Investing Activities:
Capital Expenditures	(9)	(7)
Asset Dispositions (Note 3)	0	0
Government Grants Received	0
Increase in Restricted Cash	0	0
Short Term Securities Acquired	0	0
Short Term Securities Redeemed	0	0
Capital Contributions and Loans Incurred	0	0
Capital Redemptions and Loans Paid	0	0
Other Transactions		0
Total Cash Flows from Investing Activities	(9)	(7)
Cash Flows from Financing Activities:
Short Term Debt and Overdrafts Incurred	4	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	58	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	62	0
Effect of Exchange Rate Changes on Cash and Cash Equivalents	(4)	1
Net Change in Cash and Cash Equivalents	(3)	(27)
Cash and Cash Equivalents at Beginning of the Period	68	112
Cash and Cash Equivalents at End of the Period	65	85
Non-Guarantor Subsidiaries
Cash Flows from Operating Activities:
Total Cash Flows from Operating Activities	39	(381)
Cash Flows from Investing Activities:
Capital Expenditures	(360)	(374)
Asset Dispositions (Note 3)	5	8
Government Grants Received	4
Increase in Restricted Cash	(8)	(18)
Short Term Securities Acquired	(60)	(21)
Short Term Securities Redeemed	48	4
Capital Contributions and Loans Incurred	(170)	(150)
Capital Redemptions and Loans Paid	203	0
Other Transactions		0
Total Cash Flows from Investing Activities	(338)	(551)
Cash Flows from Financing Activities:
Short Term Debt and Overdrafts Incurred	96	34
Short Term Debt and Overdrafts Paid	(51)	(42)
Long Term Debt Incurred	1,215	1,466
Long Term Debt Paid	(632)	(1,054)
Common Stock Issued	0
Preferred Stock Dividends Paid	0	0
Capital Contributions and Loans Incurred	3	55
Capital Redemptions and Loans Paid	(214)	(19)
Intercompany Dividends Paid	(6)	(59)
Transactions with Minority Interests in Subsidiaries	(8)	(10)
Debt Related Costs and Other Transactions	0	0
Total Cash Flows from Financing Activities	403	371
Effect of Exchange Rate Changes on Cash and Cash Equivalents	(169)	3
Net Change in Cash and Cash Equivalents	(65)	(558)
Cash and Cash Equivalents at Beginning of the Period	1,411	1,744
Cash and Cash Equivalents at End of the Period	1,346	1,186
Consolidating Entries and Eliminations
Cash Flows from Operating Activities:
Total Cash Flows from Operating Activities	(10)	(61)
Cash Flows from Investing Activities:
Capital Expenditures	4	2
Asset Dispositions (Note 3)	0	0
Government Grants Received	0
Increase in Restricted Cash	0	0
Short Term Securities Acquired	0	0
Short Term Securities Redeemed	0	0
Capital Contributions and Loans Incurred	231	205
Capital Redemptions and Loans Paid	(417)	(19)
Other Transactions		0
Total Cash Flows from Investing Activities	(182)	188
Cash Flows from Financing Activities:
Short Term Debt and Overdrafts Incurred	(71)	0
Short Term Debt and Overdrafts Paid	71	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	(231)	(205)
Capital Redemptions and Loans Paid	417	19
Intercompany Dividends Paid	6	59
Transactions with Minority Interests in Subsidiaries	0	0
Debt Related Costs and Other Transactions	0	0
Total Cash Flows from Financing Activities	192	(127)
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