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FAIR VALUE MEASUREMENTS (Details - Gains or losses recorded related to the eligible instruments) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Sep. 30, 2012
Sep. 30, 2010
Jun. 30, 2015
Jun. 30, 2014
Fair Value, Option, Quantitative Disclosures            
Fair Value Options Changes in Fair Value Gain (loss) $ 709 $ 494     $ 918 $ 1,239
Fair value option credit risk gains (losses)     $ 5 $ (22) 11 11
Fair Value Option | Other long-term debt            
Fair Value, Option, Quantitative Disclosures            
Fair Value Options Changes in Fair Value Gain (loss) 131 (135)     55 (209)
Fair Value Option | Other liabilities            
Fair Value, Option, Quantitative Disclosures            
Fair Value Options Changes in Fair Value Gain (loss) 0 (2)     (3) (6)
Fair Value Option | Mortgage and other loans receivable, net of allowance            
Fair Value, Option, Quantitative Disclosures            
Fair Value Options Changes in Fair Value Gain (loss) 0 0     0 0
Fair Value Option | Bond and equity securities            
Fair Value, Option, Quantitative Disclosures            
Fair Value Options Changes in Fair Value Gain (loss) 460 611     601 1,277
Fair Value Option | Alternative investments            
Fair Value, Option, Quantitative Disclosures            
Fair Value Options Changes in Fair Value Gain (loss) 118 18     263 172
Fair Value Option | Other, Including Short term investments            
Fair Value, Option, Quantitative Disclosures            
Fair Value Options Changes in Fair Value Gain (loss) $ 0 $ 2     $ 2 $ 5