Consolidating Financial Information (Details 2) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Cash Flows from Operating Activities:
Total Cash Flows from Operating Activities	$ (939)	$ (298)
Cash Flows from Investing Activities:
Capital Expenditures	(634)	(734)
Asset Dispositions	6	8
Decrease (Increase) in Restricted Cash	6	3
Short Term Securities Acquired	(72)	(89)
Short Term Securities Redeemed	82	81
Capital Contributions and Loans Incurred	0	0
Capital Redemptions and Loans Paid	0	0
Other Transactions	7	6
Total Cash Flows from Investing Activities	(605)	(725)
Cash Flows from Financing Activities:
Short Term Debt and Overdrafts Incurred	52	30
Short Term Debt and Overdrafts Paid	(24)	(89)
Long Term Debt Incurred	1,739	2,152
Long Term Debt Paid	(1,054)	(660)
Common Stock Issued	41	16
Common Stock Repurchased	(97)	(1)
Common Stock Dividends Paid	(43)	0
Preferred Stock Dividends Paid	(15)	(22)
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	(36)	(10)
Debt Related Costs and Other Transactions	0	(16)
Total Cash Flows from Financing Activities	563	1,400
Effect of Exchange Rate Changes on Cash and Cash Equivalents	(271)	(158)
Net Change in Cash and Cash Equivalents	(1,252)	219
Cash and Cash Equivalents at Beginning of the Period	2,996	2,281
Cash and Cash Equivalents at End of the Period	1,744	2,500
Parent Company
Cash Flows from Operating Activities:
Total Cash Flows from Operating Activities	(957)	(362)
Cash Flows from Investing Activities:
Capital Expenditures	(203)	(132)
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	459	214
Other Transactions	1	0
Total Cash Flows from Investing Activities	48	23
Cash Flows from Financing Activities:
Short Term Debt and Overdrafts Incurred	23	0
Short Term Debt and Overdrafts Paid	0	(53)
Long Term Debt Incurred	501	900
Long Term Debt Paid	(507)	(8)
Common Stock Issued	41	16
Common Stock Repurchased	(97)	(1)
Common Stock Dividends Paid	(43)	0
Preferred Stock Dividends Paid	(15)	(22)
Capital Contributions and Loans Incurred	452	170
Capital Redemptions and Loans Paid	(244)	(364)
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	111	622
Effect of Exchange Rate Changes on Cash and Cash Equivalents	0	0
Net Change in Cash and Cash Equivalents	(798)	283
Cash and Cash Equivalents at Beginning of the Period	1,269	802
Cash and Cash Equivalents at End of the Period	471	1,085
Guarantor Subsidiaries
Cash Flows from Operating Activities:
Total Cash Flows from Operating Activities	(11)	(34)
Cash Flows from Investing Activities:
Capital Expenditures	(14)	(12)
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	(13)	(12)
Cash Flows from Financing Activities:
Short Term Debt and Overdrafts Incurred	0	(11)
Short Term Debt and Overdrafts Paid	(6)	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)	47
Effect of Exchange Rate Changes on Cash and Cash Equivalents	(3)	(2)
Net Change in Cash and Cash Equivalents	(33)	(1)
Cash and Cash Equivalents at Beginning of the Period	94	68
Cash and Cash Equivalents at End of the Period	61	67
Non-Guarantor Subsidiaries
Cash Flows from Operating Activities:
Total Cash Flows from Operating Activities	71	135
Cash Flows from Investing Activities:
Capital Expenditures	(420)	(600)
Asset Dispositions	3	6
Decrease (Increase) in Restricted Cash	6	3
Short Term Securities Acquired	(72)	(89)
Short Term Securities Redeemed	82	81
Capital Contributions and Loans Incurred	(452)	(170)
Capital Redemptions and Loans Paid	244	364
Other Transactions	6	6
Total Cash Flows from Investing Activities	(603)	(399)
Cash Flows from Financing Activities:
Short Term Debt and Overdrafts Incurred	52	94
Short Term Debt and Overdrafts Paid	(41)	(89)
Long Term Debt Incurred	1,238	1,252
Long Term Debt Paid	(547)	(652)
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	(459)	(214)
Intercompany Dividends Paid	(39)	(27)
Transactions with Minority Interests in Subsidiaries	(36)	(10)
Debt Related Costs and Other Transactions	0	0
Total Cash Flows from Financing Activities	379	357
Effect of Exchange Rate Changes on Cash and Cash Equivalents	(268)	(156)
Net Change in Cash and Cash Equivalents	(421)	(63)
Cash and Cash Equivalents at Beginning of the Period	1,633	1,411
Cash and Cash Equivalents at End of the Period	1,212	1,348
Consolidating Entries and Eliminations
Cash Flows from Operating Activities:
Total Cash Flows from Operating Activities	(42)	(37)
Cash Flows from Investing Activities:
Capital Expenditures	3	10
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	(703)	(578)
Other Transactions	0	0
Total Cash Flows from Investing Activities	(37)	(337)
Cash Flows from Financing Activities:
Short Term Debt and Overdrafts Incurred	(23)	(53)
Short Term Debt and Overdrafts Paid	23	53
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	703	578
Intercompany Dividends Paid	39	27
Transactions with Minority Interests in Subsidiaries	0	0
Debt Related Costs and Other Transactions	0	0
Total Cash Flows from Financing Activities	79	374
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