Consolidating Financial Information (Details 2) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Cash Flows from Operating Activities:
Total Cash Flows from Operating Activities	$ (1,134)	$ (462)
Cash Flows from Investing Activities:
Capital Expenditures	(441)	(493)
Asset Dispositions	5	7
Decrease (Increase) in Restricted Cash	3	(8)
Short Term Securities Acquired	(41)	(60)
Short Term Securities Redeemed	46	48
Capital Contributions and Loans Incurred	0	0
Capital Redemptions and Loans Paid	0	0
Other Transactions	7	4
Total Cash Flows from Investing Activities	(421)	(502)
Cash Flows from Financing Activities:
Short Term Debt and Overdrafts Incurred	18	29
Short Term Debt and Overdrafts Paid	(24)	(51)
Long Term Debt Incurred	1,314	2,115
Long Term Debt Paid	(823)	(639)
Common Stock Issued	31	5
Common Stock Repurchased	(65)	0
Common Stock Dividends Paid	(26)	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	(34)	(8)
Debt Related Costs and Other Transactions	0	(16)
Total Cash Flows from Financing Activities	376	1,420
Effect of Exchange Rate Changes on Cash and Cash Equivalents	(180)	(173)
Net Change in Cash and Cash Equivalents	(1,359)	283
Cash and Cash Equivalents at Beginning of the Period	2,996	2,281
Cash and Cash Equivalents at End of the Period	1,637	2,564
Parent Company
Cash Flows from Operating Activities:
Total Cash Flows from Operating Activities	(1,112)	(439)
Cash Flows from Investing Activities:
Capital Expenditures	(148)	(128)
Asset Dispositions	2	2
Decrease (Increase) in Restricted Cash	0	0
Short Term Securities Acquired	0	0
Short Term Securities Redeemed	0	0
Capital Contributions and Loans Incurred	(211)	(61)
Capital Redemptions and Loans Paid	364	214
Other Transactions	1	0
Total Cash Flows from Investing Activities	8	27
Cash Flows from Financing Activities:
Short Term Debt and Overdrafts Incurred	3	0
Short Term Debt and Overdrafts Paid	(6)	(71)
Long Term Debt Incurred	401	900
Long Term Debt Paid	(405)	(7)
Common Stock Issued	31	5
Common Stock Repurchased	(65)	0
Common Stock Dividends Paid	(26)	0
Preferred Stock Dividends Paid	(15)	(15)
Capital Contributions and Loans Incurred	452	170
Capital Redemptions and Loans Paid	(209)	(203)
Intercompany Dividends Paid	0	0
Transactions with Minority Interests in Subsidiaries	0	0
Debt Related Costs and Other Transactions	0	(16)
Total Cash Flows from Financing Activities	161	763
Effect of Exchange Rate Changes on Cash and Cash Equivalents	0	0
Net Change in Cash and Cash Equivalents	(943)	351
Cash and Cash Equivalents at Beginning of the Period	1,269	802
Cash and Cash Equivalents at End of the Period	326	1,153
Guarantor Subsidiaries
Cash Flows from Operating Activities:
Total Cash Flows from Operating Activities	(15)	(52)
Cash Flows from Investing Activities:
Capital Expenditures	(9)	(9)
Asset Dispositions	1	0
Decrease (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	0
Total Cash Flows from Investing Activities	(8)	(9)
Cash Flows from Financing Activities:
Short Term Debt and Overdrafts Incurred	6	4
Short Term Debt and Overdrafts Paid	0	0
Long Term Debt Incurred	0	0
Long Term Debt Paid	0	0
Common Stock Issued	0	0
Common Stock Repurchased	0	0
Common Stock Dividends Paid	0	0
Preferred Stock Dividends Paid	0	0
Capital Contributions and Loans Incurred	0	58
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	6	62
Effect of Exchange Rate Changes on Cash and Cash Equivalents	0	(4)
Net Change in Cash and Cash Equivalents	(17)	(3)
Cash and Cash Equivalents at Beginning of the Period	94	68
Cash and Cash Equivalents at End of the Period	77	65
Non-Guarantor Subsidiaries
Cash Flows from Operating Activities:
Total Cash Flows from Operating Activities	31	39
Cash Flows from Investing Activities:
Capital Expenditures	(286)	(360)
Asset Dispositions	2	5
Decrease (Increase) in Restricted Cash	3	(8)
Short Term Securities Acquired	(41)	(60)
Short Term Securities Redeemed	46	48
Capital Contributions and Loans Incurred	(452)	(170)
Capital Redemptions and Loans Paid	209	203
Other Transactions	6	4
Total Cash Flows from Investing Activities	(513)	(338)
Cash Flows from Financing Activities:
Short Term Debt and Overdrafts Incurred	18	96
Short Term Debt and Overdrafts Paid	(27)	(51)
Long Term Debt Incurred	913	1,215
Long Term Debt Paid	(418)	(632)
Common Stock Issued	0	0
Common Stock Repurchased	0	0
Common Stock Dividends Paid	0	0
Preferred Stock Dividends Paid	0	0
Capital Contributions and Loans Incurred	211	3
Capital Redemptions and Loans Paid	(364)	(214)
Intercompany Dividends Paid	(36)	(6)
Transactions with Minority Interests in Subsidiaries	(34)	(8)
Debt Related Costs and Other Transactions	0	0
Total Cash Flows from Financing Activities	263	403
Effect of Exchange Rate Changes on Cash and Cash Equivalents	(180)	(169)
Net Change in Cash and Cash Equivalents	(399)	(65)
Cash and Cash Equivalents at Beginning of the Period	1,633	1,411
Cash and Cash Equivalents at End of the Period	1,234	1,346
Consolidating Entries and Eliminations
Cash Flows from Operating Activities:
Total Cash Flows from Operating Activities	(38)	(10)
Cash Flows from Investing Activities:
Capital Expenditures	2	4
Asset Dispositions	0	0
Decrease (Increase) in Restricted Cash	0	0
Short Term Securities Acquired	0	0
Short Term Securities Redeemed	0	0
Capital Contributions and Loans Incurred	663	231
Capital Redemptions and Loans Paid	(573)	(417)
Other Transactions	0	0
Total Cash Flows from Investing Activities	92	(182)
Cash Flows from Financing Activities:
Short Term Debt and Overdrafts Incurred	(9)	(71)
Short Term Debt and Overdrafts Paid	9	71
Long Term Debt Incurred	0	0
Long Term Debt Paid	0	0
Common Stock Issued	0	0
Common Stock Repurchased	0	0
Common Stock Dividends Paid	0	0
Preferred Stock Dividends Paid	0	0
Capital Contributions and Loans Incurred	(663)	(231)
Capital Redemptions and Loans Paid	573	417
Intercompany Dividends Paid	36	6
Transactions with Minority Interests in Subsidiaries	0	0
Debt Related Costs and Other Transactions	0	0
Total Cash Flows from Financing Activities	(54)	192
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