Income Taxes (Details - Unrecognized Tax Benefits) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2009
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized tax benefits, beginning of period	$ 330	$ 333	$ 492
Additions based on tax positions related to prior years	5	12	10
Additions based on tax positions related to current year	2	0	0
Reductions based on tax positions related to prior years	(304)	(14)	(163)
Settlements with taxing authorities	(3)	0	(5)
Statute of limitations lapses	(1)	(1)	(1)
Unrecognized tax benefits, end of period	29	330	333
Unrecognized tax benefits, period increase (decrease)	(301)
Unrecognized Tax Benefits (Textuals) [Abstract]
Unrecognized tax benefits that would favorably impact the tax rate	18
Debt Conversion, Original Debt, Amount				$ 1,700
Significant change in unrecognized tax benefits is reasonably possible, estimated range of change, upper bound	4
Income tax examination, penalties and interest accrued	13	21
Income tax examination penalties and interest accrued period increase decrease	(8)	$ 1	$ 5
Tax Years 2007, 2009 and 2010 [Member]
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Reductions based on tax positions related to prior years	$ (303)
Hong Kong [Member] | Earliest Tax Year [Member]
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Open tax years by major tax jurisdiction	2008
Hong Kong [Member] | Latest Tax Year [Member]
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Open tax years by major tax jurisdiction	2015
United Kingdom [Member] | Earliest Tax Year [Member]
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Open tax years by major tax jurisdiction	2013
United Kingdom [Member] | Latest Tax Year [Member]
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Open tax years by major tax jurisdiction	2015
United States [Member] | Earliest Tax Year [Member]
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Open tax years by major tax jurisdiction	2012
United States [Member] | Latest Tax Year [Member]
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Open tax years by major tax jurisdiction	2015
Various States [Member] | Earliest Tax Year [Member]
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Open tax years by major tax jurisdiction	2007
Various States [Member] | Latest Tax Year [Member]
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Open tax years by major tax jurisdiction	2015