Derivative Financial Instruments (Details - Hedge accounting) (Designated As Hedging Instrument [Member], USD $) In Millions, unless otherwise specified													3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended
	Jun. 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]	Jun. 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]	Jun. 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]	Jun. 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]	Jun. 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]	Jun. 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]	Jun. 30, 2012 Other Comprehensive Income [Member] Interest Rate Swap [Member]	Jun. 30, 2011 Other Comprehensive Income [Member] Interest Rate Swap [Member]	Jun. 30, 2012 Other Comprehensive Income [Member] Interest Rate Swap [Member]	Jun. 30, 2011 Other Comprehensive Income [Member] Interest Rate Swap [Member]	Jun. 30, 2012 Other Comprehensive Income [Member] Interest And Foreign Currency Swaps [Member]	Jun. 30, 2011 Other Comprehensive Income [Member] Interest And Foreign Currency Swaps [Member]	Jun. 30, 2012 Other Comprehensive Income [Member] Interest And Foreign Currency Swaps [Member]	Jun. 30, 2011 Other Comprehensive Income [Member] Interest And Foreign Currency Swaps [Member]	Jun. 30, 2012 Other Comprehensive Income [Member] Foreign Currency Swap [Member]	Jun. 30, 2011 Other Comprehensive Income [Member] Foreign Currency Swap [Member]	Jun. 30, 2012 Other Comprehensive Income [Member] Foreign Currency Swap [Member]	Jun. 30, 2011 Other Comprehensive Income [Member] Foreign Currency Swap [Member]	Jun. 30, 2012 Notional Hedged [Member] Interest Rate Swap [Member]	Dec. 31, 2011 Notional Hedged [Member] Interest Rate Swap [Member]	Jun. 30, 2012 Notional Hedged [Member] Interest And Foreign Currency Swaps [Member]	Dec. 31, 2011 Notional Hedged [Member] Interest And Foreign Currency Swaps [Member]	Jun. 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	$ 6	$ 7	$ 0	$ 0	$ 4	$ 3	$ 0	$ 0	$ 11	$ 11	$ 17	$ 19
Derivative Gain Loss On Derivative Net													(1)	0	(1)	(2)	2	(2)	0	(5)	5	(6)	2	(10)
Notional Amount Of Derivatives																									$ 120	$ 134	$ 64	$ 64	$ 134	$ 134