XML 51 R67.htm IDEA: XBRL DOCUMENT v2.4.0.6
Fair Value Measurement - Nonrecurring Basis (Details 3) (USD $)
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Fair Value, Measurements, Nonrecurring [Member]
Dec. 31, 2011
Fair Value, Measurements, Nonrecurring [Member]
Sep. 30, 2012
Fair Value, Measurements, Nonrecurring [Member]
Level 2 [Member]
Dec. 31, 2011
Fair Value, Measurements, Nonrecurring [Member]
Level 2 [Member]
Sep. 30, 2012
Fair Value, Measurements, Nonrecurring [Member]
Level 3 [Member]
Dec. 31, 2011
Fair Value, Measurements, Nonrecurring [Member]
Level 3 [Member]
Assets and liabilities measured at fair value on a nonrecurring basis                    
Total assets at fair value on a nonrecurring basis         $ 4,100 $ 5,300 $ 381 $ 369 $ 3,700 $ 4,900
Fair Value, Option, Changes in Fair Value, Gain (Loss) $ (1,100) $ (623) $ (1,900) $ 1,800