Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Recurring Fair Value Inputs (Details)

v3.2.0.727
Fair Value Measurements - Recurring Fair Value Inputs (Details) - USD ($)
6 Months Ended 12 Months Ended
Jun. 30, 2015
Dec. 31, 2014
Mar. 31, 2015
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2013
Fair Value Inputs, Assets, Quantitative Information [Line Items]            
Long-term debt $ (32,920,000,000) $ (36,404,000,000)        
Net derivative asset (351,000,000) (920,000,000) $ (1,081,000,000) $ (1,035,000,000) $ (839,000,000) $ (224,000,000)
Recurring            
Fair Value Inputs, Assets, Quantitative Information [Line Items]            
Assets, fair value 673,800,000,000 660,229,000,000        
Long-term debt (32,920,000,000) (36,404,000,000)        
Recurring | Level 3            
Fair Value Inputs, Assets, Quantitative Information [Line Items]            
Assets, fair value 21,273,000,000 22,262,000,000        
Long-term debt (2,716,000,000) (2,362,000,000)        
Net derivative asset (351,000,000) (920,000,000)        
Recurring | Level 3 | Loans held-for-sale            
Fair Value Inputs, Assets, Quantitative Information [Line Items]            
Assets, fair value 660,000,000 173,000,000        
Recurring | Level 3 | Loans and leases            
Fair Value Inputs, Assets, Quantitative Information [Line Items]            
Assets, fair value 2,000,000,000 2,000,000,000        
Recurring | Level 3 | Credit derivatives            
Fair Value Inputs, Assets, Quantitative Information [Line Items]            
Net derivative asset $ (265,000,000) $ 22,000,000        
Recurring | Level 3 | Credit derivatives | Income Approach Valuation Technique            
Fair Value Inputs [Abstract]            
Default rate 1.00% 4.00%        
Loss severity   35.00%        
Recurring | Level 3 | Credit derivatives | Minimum | Income Approach Valuation Technique            
Fair Value Inputs [Abstract]            
Yield 0.00% 0.00%        
Prepayment speed 3.00% 3.00%        
Loss severity 20.00%          
Upfront points 0.00% 0.00%        
Spread to index   0.25%        
Credit correlation 26.00% 24.00%        
Recurring | Level 3 | Credit derivatives | Maximum | Income Approach Valuation Technique            
Fair Value Inputs [Abstract]            
Yield 26.00% 25.00%        
Prepayment speed 20.00% 20.00%        
Default rate 4.00%          
Loss severity 40.00%          
Upfront points 1.00% 1.00%        
Spread to index   4.50%        
Credit correlation 99.00% 99.00%        
Recurring | Level 3 | Credit derivatives | Weighted Average | Income Approach Valuation Technique            
Fair Value Inputs [Abstract]            
Yield 15.00% 14.00%        
Prepayment speed 17.00% 11.00%        
Default rate 3.00%          
Loss severity 35.00%          
Upfront points 0.75% 0.65%        
Spread to index   1.19%        
Credit correlation 51.00% 51.00%        
Recurring | Level 3 | Equity derivatives            
Fair Value Inputs, Assets, Quantitative Information [Line Items]            
Net derivative asset $ (1,209,000,000) $ (1,560,000,000)        
Recurring | Level 3 | Equity derivatives | Minimum | Income Approach Valuation Technique            
Fair Value Inputs [Abstract]            
Equity correlation 20.00% 20.00%        
Long-dated equity volatilities 4.00% 6.00%        
Recurring | Level 3 | Equity derivatives | Maximum | Income Approach Valuation Technique            
Fair Value Inputs [Abstract]            
Equity correlation 98.00% 98.00%        
Long-dated equity volatilities 91.00% 69.00%        
Recurring | Level 3 | Equity derivatives | Weighted Average | Income Approach Valuation Technique            
Fair Value Inputs [Abstract]            
Equity correlation 65.00% 65.00%        
Long-dated equity volatilities 23.00% 24.00%        
Recurring | Level 3 | Commodity contracts            
Fair Value Inputs, Assets, Quantitative Information [Line Items]            
Net derivative asset $ 151,000,000 $ 141,000,000        
Recurring | Level 3 | Commodity contracts | Minimum | Income Approach Valuation Technique            
Fair Value Inputs [Abstract]            
Long-dated equity volatilities 17.00% 16.00%        
Natural gas forward price $ 2 $ 2        
Correlation 66.00% 82.00%        
Recurring | Level 3 | Commodity contracts | Maximum | Income Approach Valuation Technique            
Fair Value Inputs [Abstract]            
Long-dated equity volatilities 131.00% 98.00%        
Natural gas forward price $ 7 $ 7        
Correlation 93.00% 93.00%        
Recurring | Level 3 | Commodity contracts | Weighted Average | Income Approach Valuation Technique            
Fair Value Inputs [Abstract]            
Long-dated equity volatilities 40.00% 35.00%        
Natural gas forward price $ 5 $ 5        
Correlation 84.00% 90.00%        
Recurring | Level 3 | Interest rate derivatives            
Fair Value Inputs, Assets, Quantitative Information [Line Items]            
Net derivative asset $ 972,000,000 $ 477,000,000        
Recurring | Level 3 | Interest rate derivatives | Minimum | Income Approach Valuation Technique            
Fair Value Inputs [Abstract]            
Correlation (IR/IR) 21.00% 11.00%        
Long-dated volatilities (IR) 0.00% 0.00%        
Correlation (FX/IR) (25.00%) (48.00%)        
Long-dated inflation rates 0.00% 0.00%        
Recurring | Level 3 | Interest rate derivatives | Maximum | Income Approach Valuation Technique            
Fair Value Inputs [Abstract]            
Correlation (IR/IR) 99.00% 99.00%        
Long-dated volatilities (IR) 2.00% 2.00%        
Correlation (FX/IR) 40.00% 40.00%        
Long-dated inflation rates 4.00% 3.00%        
Recurring | Level 3 | Interest rate derivatives | Weighted Average | Income Approach Valuation Technique            
Fair Value Inputs [Abstract]            
Correlation (IR/IR) 46.00% 55.00%        
Long-dated volatilities (IR) 1.00% 1.00%        
Correlation (FX/IR) (8.00%) (5.00%)        
Long-dated inflation rates 2.00% 1.00%        
Recurring | Level 3 | Mortgage trading loans and ABS            
Fair Value Inputs, Assets, Quantitative Information [Line Items]            
Assets, fair value $ 2,200,000,000 $ 2,100,000,000        
Recurring | Level 3 | Corporate securities, trading loans and other            
Fair Value Inputs, Assets, Quantitative Information [Line Items]            
Assets, fair value 3,300,000,000 3,300,000,000        
Recurring | Level 3 | Non-U.S. sovereign debt            
Fair Value Inputs, Assets, Quantitative Information [Line Items]            
Assets, fair value 468,000,000 574,000,000        
Recurring | Level 3 | Other taxable securities, substantially all asset-backed securities            
Fair Value Inputs, Assets, Quantitative Information [Line Items]            
Assets, fair value 677,000,000 1,700,000,000        
Recurring | Level 3 | Tax-exempt securities            
Fair Value Inputs, Assets, Quantitative Information [Line Items]            
Assets, fair value 584,000,000 599,000,000        
Recurring | Level 3 | Instruments backed by residential real estate assets            
Fair Value Inputs, Assets, Quantitative Information [Line Items]            
Assets, fair value $ 2,180,000,000 $ 2,030,000,000        
Recurring | Level 3 | Instruments backed by residential real estate assets | Minimum | Income and Market Approach Technique            
Fair Value Inputs [Abstract]            
Yield 0.00% 0.00%        
Prepayment speed 0.00% 0.00%        
Default rate 0.00% 2.00%        
Loss severity 0.00% 26.00%        
Recurring | Level 3 | Instruments backed by residential real estate assets | Maximum | Income and Market Approach Technique            
Fair Value Inputs [Abstract]            
Yield 25.00% 25.00%        
Prepayment speed 33.00% 35.00%        
Default rate 14.00% 15.00%        
Loss severity 80.00% 100.00%        
Recurring | Level 3 | Instruments backed by residential real estate assets | Weighted Average | Income and Market Approach Technique            
Fair Value Inputs [Abstract]            
Yield 5.00% 6.00%        
Prepayment speed 12.00% 14.00%        
Default rate 6.00% 7.00%        
Loss severity 40.00% 34.00%        
Recurring | Level 3 | Instruments backed by residential real estate assets | Loans held-for-sale            
Fair Value Inputs, Assets, Quantitative Information [Line Items]            
Assets, fair value $ 660,000,000 $ 173,000,000        
Recurring | Level 3 | Instruments backed by residential real estate assets | Loans and leases            
Fair Value Inputs, Assets, Quantitative Information [Line Items]            
Assets, fair value 1,485,000,000 1,374,000,000        
Recurring | Level 3 | Instruments backed by residential real estate assets | Mortgage trading loans and ABS | Trading Securities            
Fair Value Inputs, Assets, Quantitative Information [Line Items]            
Assets, fair value 35,000,000 483,000,000        
Recurring | Level 3 | Commercial loans, debt securities and other            
Fair Value Inputs, Assets, Quantitative Information [Line Items]            
Assets, fair value $ 6,205,000,000 $ 7,203,000,000        
Recurring | Level 3 | Commercial loans, debt securities and other | Minimum | Income and Market Approach Technique            
Fair Value Inputs [Abstract]            
Yield 0.00% 0.00%        
Enterprise value/EBITDA multiple   0        
Prepayment speed 5.00% 1.00%        
Default rate 1.00% 1.00%        
Loss severity 25.00% 25.00%        
Duration            
Price (in usd per share) $ 0 $ 0        
Recurring | Level 3 | Commercial loans, debt securities and other | Maximum | Income and Market Approach Technique            
Fair Value Inputs [Abstract]            
Yield 29.00% 40.00%        
Enterprise value/EBITDA multiple   30        
Prepayment speed 30.00% 30.00%        
Default rate 5.00% 5.00%        
Loss severity 50.00% 40.00%        
Duration 4 years 5 years        
Price (in usd per share) $ 138 $ 107        
Recurring | Level 3 | Commercial loans, debt securities and other | Weighted Average | Income and Market Approach Technique            
Fair Value Inputs [Abstract]            
Yield 10.00% 9.00%        
Enterprise value/EBITDA multiple   6        
Prepayment speed 15.00% 12.00%        
Default rate 4.00% 4.00%        
Loss severity 38.00% 38.00%        
Duration 3 years 3 years        
Price (in usd per share) $ 66 $ 76        
Recurring | Level 3 | Commercial loans, debt securities and other | Loans and leases            
Fair Value Inputs, Assets, Quantitative Information [Line Items]            
Assets, fair value $ 485,000,000 $ 609,000,000        
Recurring | Level 3 | Commercial loans, debt securities and other | Mortgage trading loans and ABS | Trading Securities            
Fair Value Inputs, Assets, Quantitative Information [Line Items]            
Assets, fair value 2,124,000,000 1,580,000,000        
Recurring | Level 3 | Commercial loans, debt securities and other | Corporate securities, trading loans and other | Trading Securities            
Fair Value Inputs, Assets, Quantitative Information [Line Items]            
Assets, fair value 2,959,000,000 3,224,000,000        
Recurring | Level 3 | Commercial loans, debt securities and other | Non-U.S. sovereign debt | Trading Securities            
Fair Value Inputs, Assets, Quantitative Information [Line Items]            
Assets, fair value 468,000,000 574,000,000        
Recurring | Level 3 | Commercial loans, debt securities and other | Other taxable securities, substantially all asset-backed securities | Available-for-sale Securities            
Fair Value Inputs, Assets, Quantitative Information [Line Items]            
Assets, fair value 169,000,000 1,216,000,000        
Recurring | Level 3 | Auction rate securities            
Fair Value Inputs, Assets, Quantitative Information [Line Items]            
Assets, fair value $ 1,459,000,000 $ 1,096,000,000        
Recurring | Level 3 | Auction rate securities | Minimum | Income and Market Approach Technique            
Fair Value Inputs [Abstract]            
Price (in usd per share) $ 44 $ 60        
Recurring | Level 3 | Auction rate securities | Maximum | Income and Market Approach Technique            
Fair Value Inputs [Abstract]            
Price (in usd per share) 105 100        
Recurring | Level 3 | Auction rate securities | Weighted Average | Income and Market Approach Technique            
Fair Value Inputs [Abstract]            
Price (in usd per share) $ 98 $ 95        
Recurring | Level 3 | Auction rate securities | Corporate securities, trading loans and other | Trading Securities            
Fair Value Inputs, Assets, Quantitative Information [Line Items]            
Assets, fair value $ 367,000,000 $ 46,000,000        
Recurring | Level 3 | Auction rate securities | Other taxable securities, substantially all asset-backed securities | Available-for-sale Securities            
Fair Value Inputs, Assets, Quantitative Information [Line Items]            
Assets, fair value 508,000,000 451,000,000        
Recurring | Level 3 | Auction rate securities | Tax-exempt securities | Available-for-sale Securities            
Fair Value Inputs, Assets, Quantitative Information [Line Items]            
Assets, fair value $ 584,000,000 $ 599,000,000        
Recurring | Level 3 | Structured liabilities | Minimum | Income Approach Valuation Technique            
Fair Value Inputs [Abstract]            
Equity correlation 20.00% 20.00%        
Long-dated equity volatilities 4.00% 6.00%        
Long-dated volatilities (IR) 1.00% 0.00%        
Recurring | Level 3 | Structured liabilities | Maximum | Income Approach Valuation Technique            
Fair Value Inputs [Abstract]            
Equity correlation 98.00% 98.00%        
Long-dated equity volatilities 91.00% 69.00%        
Long-dated volatilities (IR) 1.00% 2.00%        
Recurring | Level 3 | Structured liabilities | Weighted Average | Income Approach Valuation Technique            
Fair Value Inputs [Abstract]            
Equity correlation 65.00%          
Long-dated equity volatilities 23.00%          
Recurring | Level 3 | Structured liabilities | Long-term debt            
Fair Value Inputs, Assets, Quantitative Information [Line Items]            
Long-term debt $ (2,716,000,000) $ (2,362,000,000)        
Recurring | Level 3 | Structured liabilities | Long-term debt | Weighted Average | Income Approach Valuation Technique            
Fair Value Inputs [Abstract]            
Equity correlation   65.00%        
Long-dated equity volatilities   24.00%        
Long-dated volatilities (IR)   1.00%