Derivative Financial Insturments (Details - Hedge accounting) (Designated as Hedging Instrument [Member], USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011
Other Long Term Investments Designated As Accounting Hedges [Member]
Designated As Accounting Hedges Interest Rate Foreign Currency And Combinations [Line Items]
Derivative Fair Value	$ 5		$ 10
Other Long Term Investments Designated As Accounting Hedges [Member] | Interest Rate Swap [Member]
Designated As Accounting Hedges Interest Rate Foreign Currency And Combinations [Line Items]
Derivative Fair Value	4		7
Other Long Term Investments Designated As Accounting Hedges [Member] | Interest And Foreign Currency Swaps [Member]
Designated As Accounting Hedges Interest Rate Foreign Currency And Combinations [Line Items]
Derivative Fair Value	0		0
Other Long Term Investments Designated As Accounting Hedges [Member] | Foreign Currency Swap [Member]
Designated As Accounting Hedges Interest Rate Foreign Currency And Combinations [Line Items]
Derivative Fair Value	1		3
Accounts Payable Accrued Expenses And Other Liabilities Designated As Accounting Hedge [Member]
Designated As Accounting Hedges Interest Rate Foreign Currency And Combinations [Line Items]
Derivative Fair Value	31		30
Accounts Payable Accrued Expenses And Other Liabilities Designated As Accounting Hedge [Member] | Interest Rate Swap [Member]
Designated As Accounting Hedges Interest Rate Foreign Currency And Combinations [Line Items]
Derivative Fair Value	0		0
Accounts Payable Accrued Expenses And Other Liabilities Designated As Accounting Hedge [Member] | Interest And Foreign Currency Swaps [Member]
Designated As Accounting Hedges Interest Rate Foreign Currency And Combinations [Line Items]
Derivative Fair Value	13		11
Accounts Payable Accrued Expenses And Other Liabilities Designated As Accounting Hedge [Member] | Foreign Currency Swap [Member]
Designated As Accounting Hedges Interest Rate Foreign Currency And Combinations [Line Items]
Derivative Fair Value	18		19
Other Comprehensive Income [Member]
Designated As Accounting Hedges Interest Rate Foreign Currency And Combinations [Line Items]
Derivative, Gain (Loss) on Derivative, Net	(8)		(3)
Other Comprehensive Income [Member] | Interest Rate Swap [Member]
Designated As Accounting Hedges Interest Rate Foreign Currency And Combinations [Line Items]
Derivative, Gain (Loss) on Derivative, Net	(3)		(3)
Other Comprehensive Income [Member] | Interest And Foreign Currency Swaps [Member]
Designated As Accounting Hedges Interest Rate Foreign Currency And Combinations [Line Items]
Derivative, Gain (Loss) on Derivative, Net	(2)		1
Other Comprehensive Income [Member] | Foreign Currency Swap [Member]
Designated As Accounting Hedges Interest Rate Foreign Currency And Combinations [Line Items]
Derivative, Gain (Loss) on Derivative, Net	(3)	[1]	(1)	[1]
Notional Hedged [Member]
Designated As Accounting Hedges Interest Rate Foreign Currency And Combinations [Line Items]
Notional Amount of Derivatives	255		332
Notional Hedged [Member] | Interest Rate Swap [Member]
Designated As Accounting Hedges Interest Rate Foreign Currency And Combinations [Line Items]
Notional Amount of Derivatives	58		134
Notional Hedged [Member] | Interest And Foreign Currency Swaps [Member]
Designated As Accounting Hedges Interest Rate Foreign Currency And Combinations [Line Items]
Notional Amount of Derivatives	64		64
Notional Hedged [Member] | Foreign Currency Swap [Member]
Designated As Accounting Hedges Interest Rate Foreign Currency And Combinations [Line Items]
Notional Amount of Derivatives	$ 133		$ 134

[1] Other comprehensive income for foreign currency swaps excludes amounts required to adjust future policy benefits for the run-off settlement annuity business.