Derivative Financial Instruments (Details - Hedge accounting) (Designated As Hedging Instrument [Member], USD $) In Millions, unless otherwise specified													3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended
	Sep. 30, 2012 Other Long Term Investments Designated As Accounting Hedges [Member] Interest Rate Swap [Member]	Dec. 31, 2011 Other Long Term Investments Designated As Accounting Hedges [Member] Interest Rate Swap [Member]	Sep. 30, 2012 Other Long Term Investments Designated As Accounting Hedges [Member] Interest And Foreign Currency Swaps [Member]	Dec. 31, 2011 Other Long Term Investments Designated As Accounting Hedges [Member] Interest And Foreign Currency Swaps [Member]	Sep. 30, 2012 Other Long Term Investments Designated As Accounting Hedges [Member] Foreign Currency Swap [Member]	Dec. 31, 2011 Other Long Term Investments Designated As Accounting Hedges [Member] Foreign Currency Swap [Member]	Sep. 30, 2012 Accounts Payable Accrued Expenses And Other Liabilities Designated As Accounting Hedge [Member] Interest Rate Swap [Member]	Dec. 31, 2011 Accounts Payable Accrued Expenses And Other Liabilities Designated As Accounting Hedge [Member] Interest Rate Swap [Member]	Sep. 30, 2012 Accounts Payable Accrued Expenses And Other Liabilities Designated As Accounting Hedge [Member] Interest And Foreign Currency Swaps [Member]	Dec. 31, 2011 Accounts Payable Accrued Expenses And Other Liabilities Designated As Accounting Hedge [Member] Interest And Foreign Currency Swaps [Member]	Sep. 30, 2012 Accounts Payable Accrued Expenses And Other Liabilities Designated As Accounting Hedge [Member] Foreign Currency Swap [Member]	Dec. 31, 2011 Accounts Payable Accrued Expenses And Other Liabilities Designated As Accounting Hedge [Member] Foreign Currency Swap [Member]	Sep. 30, 2012 Other Comprehensive Income [Member] Interest Rate Swap [Member]	Sep. 30, 2011 Other Comprehensive Income [Member] Interest Rate Swap [Member]	Sep. 30, 2012 Other Comprehensive Income [Member] Interest Rate Swap [Member]	Sep. 30, 2011 Other Comprehensive Income [Member] Interest Rate Swap [Member]	Sep. 30, 2012 Other Comprehensive Income [Member] Interest And Foreign Currency Swaps [Member]	Sep. 30, 2011 Other Comprehensive Income [Member] Interest And Foreign Currency Swaps [Member]	Sep. 30, 2012 Other Comprehensive Income [Member] Interest And Foreign Currency Swaps [Member]	Sep. 30, 2011 Other Comprehensive Income [Member] Interest And Foreign Currency Swaps [Member]	Sep. 30, 2012 Other Comprehensive Income [Member] Foreign Currency Swap [Member]	Sep. 30, 2011 Other Comprehensive Income [Member] Foreign Currency Swap [Member]	Sep. 30, 2012 Other Comprehensive Income [Member] Foreign Currency Swap [Member]	Sep. 30, 2011 Other Comprehensive Income [Member] Foreign Currency Swap [Member]	Sep. 30, 2012 Notional Hedged [Member] Interest Rate Swap [Member]	Dec. 31, 2011 Notional Hedged [Member] Interest Rate Swap [Member]	Sep. 30, 2012 Notional Hedged [Member] Interest And Foreign Currency Swaps [Member]	Dec. 31, 2011 Notional Hedged [Member] Interest And Foreign Currency Swaps [Member]	Sep. 30, 2012 Notional Hedged [Member] Foreign Currency Swap [Member]	Dec. 31, 2011 Notional Hedged [Member] Foreign Currency Swap [Member]
Designated As Accounting Hedges Interest Rate Foreign Currency And Combinations [Line Items]
Derivative Fair Value	$ 5	$ 7	$ 0	$ 0	$ 2	$ 3	$ 0	$ 0	$ 12	$ 11	$ 20	$ 19
Derivative Gain Loss On Derivative Net													(1)	0	(2)	(2)	(2)	9	(1)	4	(3)	10	(1)	0
Notional Amount Of Derivatives																									$ 60	$ 134	$ 64	$ 64	$ 134	$ 134