Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Reconciliation (Details)

v2.4.0.6
Fair Value Measurements - Reconciliation (Details) (USD $)
In Millions, unless otherwise specified
 3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Dec. 31, 2011
Reconciliation of all assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs Level(3)          
Gross Sales $ 15 $ 218 $ 113 $ 452  
Reclassification of trading account assets - corporate securities, trading loans and other to trading account assets - mortgage trading loans and ABS     900    
Derivative assets 57,865   57,865   73,023
Fair Value, Measurements, Recurring [Member]
          
Reconciliation of all assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs Level(3)          
Derivative assets 57,865 [1]   57,865 [1]   73,023 [1]
Derivative liabilities 51,369 [1]   51,369 [1]   59,520 [1]
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
          
Reconciliation of all assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs Level(3)          
Derivative assets 9,983 [1] 16,000 9,983 [1] 16,000 14,366 [1]
Derivative liabilities 7,023 [1] 9,800 7,023 [1] 9,800 8,500 [1]
Corporate securities, trading loans and other [Member]
          
Reconciliation of all assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs Level(3)          
Consolidation of VIEs          [2]  
Balance, beginning (143) [2] (63) [2] (114) [2] (7) [2]  
Gains (Losses) in Earnings 4 [2] 2 [2] 4 [2] 2 [2]  
Gross Purchases 17 [2] 18 [2] 72 [2] 94 [2]  
Gross Sales (45) [2] (3) [2] (114) [2] (135) [2]  
Gross Transfers into Level 3   (24) [2] (65) [2] (24) [2]  
Gross Transfers out of Level 3 (2) [2]   (52) [2]    
Balance, ending (165) [2] (70) [2] (165) [2] (70) [2]  
Short-term Debt [Member]
          
Reconciliation of all assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs Level(3)          
Consolidation of VIEs    [2],[3]      [2],[3]    [2],[3]  
Balance, beginning 0 [2],[3] (744) [2],[3] 0 [2],[3] (706) [2],[3]  
Gains (Losses) in Earnings 0 [2],[3] 58 [2],[3] 0 [2],[3] (24) [2],[3]  
Gains (Losses) in OCI    [2],[3]    [2],[3]    [2],[3]    [2],[3]  
Gross Purchases    [2],[3]    [2],[3]    [2],[3]    [2],[3]  
Gross Sales (232) [2],[3]    [2],[3] (232) [2],[3] 0 [2],[3]  
Gross Issuances    [2],[3]    [2],[3]    [2],[3]    [2],[3]  
Gross Settlements 0 [2],[3] 19 [2],[3] 0 [2],[3] 63 [2],[3]  
Gross Transfers into Level 3    [2],[3]    [2],[3]    [2],[3]    [2],[3]  
Gross Transfers out of Level 3      [2],[3]      [2],[3]  
Balance, ending (232) [2],[3] (667) [2],[3] (232) [2],[3] (667) [2],[3]  
Accrued Liabilities [Member]
          
Reconciliation of all assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs Level(3)          
Consolidation of VIEs          [2],[3]  
Balance, beginning (2) [2],[3] (777) [2],[3] (14) [2],[3] (828) [2],[3]  
Gains (Losses) in Earnings 0 [2],[3] 0 [2],[3] 4 [2],[3] 64 [2],[3]  
Gains (Losses) in OCI    [2],[3]    [2],[3]    [2],[3]    [2],[3]  
Gross Purchases    [2],[3]    [2],[3] 5 [2],[3]    [2],[3]  
Gross Sales    [2],[3]    [2],[3]    [2],[3] (4) [2],[3]  
Gross Issuances (7) [2],[3]    [2],[3] (7) [2],[3] (9) [2],[3]  
Gross Settlements    [2],[3] 3 [2],[3]    [2],[3] 3 [2],[3]  
Gross Transfers into Level 3    [2],[3]    [2],[3]    [2],[3]    [2],[3]  
Gross Transfers out of Level 3    [2],[3] 761 [2],[3] (3) [2],[3] (761) [2],[3]  
Balance, ending (9) [2],[3] (13) [2],[3] (9) [2],[3] (13) [2],[3]  
Long-term Debt [Member]
          
Reconciliation of all assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs Level(3)          
Consolidation of VIEs          [2],[3]  
Balance, beginning (2,388) [2],[3] (3,324) [2],[3] (2,943) [2],[3] (2,986) [2],[3]  
Gains (Losses) in Earnings (91) [2],[3] 388 [2],[3] (239) [2],[3] 245 [2],[3]  
Gains (Losses) in OCI    [2],[3]    [2],[3]    [2],[3]    [2],[3]  
Gross Purchases 70 [2],[3] 125 [2],[3] 188 [2],[3] 340 [2],[3]  
Gross Sales 0 [2],[3] (17) [2],[3] (33) [2],[3] (72) [2],[3]  
Gross Issuances (115) [2],[3] (218) [2],[3] (253) [2],[3] (467) [2],[3]  
Gross Settlements 391 [2],[3] 366 [2],[3] 1,099 [2],[3] 754 [2],[3]  
Gross Transfers into Level 3 (531) [2],[3] (679) [2],[3] (1,569) [2],[3] (1,709) [2],[3]  
Gross Transfers out of Level 3 (374) [2],[3] (702) [2],[3] (1,460) [2],[3] (1,238) [2],[3]  
Balance, ending (2,290) [2],[3] (2,657) [2],[3] (2,290) [2],[3] (2,657) [2],[3]  
Trading Account Assets [Member]
          
Reconciliation of all assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs Level(3)          
Balance, beginning 10,263 [2] 13,970 [2] 11,455 [2] 15,459 [2]  
Consolidation of VIEs          [2]  
Gains (Losses) in Earnings 202 [2] (356) [2] 415 [2] 1,111 [2]  
Gains (Losses) in OCI    [2]    [2]    [2]    [2]  
Gross Purchases 1,203 [2] 1,287 [2] 4,247 [2] 6,996 [2]  
Gross Sales (1,251) [2] (2,230) [2] (4,931) [2] (10,220) [2]  
Gross Issuances    [2]    [2]    [2]    [2]  
Gross Settlements (238) [2] (666) [2] (1,209) [2] (1,531) [2]  
Gross Transfers into Level 3 166 [2] 665 [2] 1,098 [2] 1,604 [2]  
Gross Transfers out of Level 3 (390) [2] (435) [2] (1,120) [2] (1,184) [2]  
Balance, ending 9,955 [2] 12,235 [2] 9,955 [2] 12,235 [2]  
Corporate securities, trading loans and other [Member]
          
Reconciliation of all assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs Level(3)          
Balance, beginning 4,459 [2],[3] 7,452 [2],[3] 6,880 [2],[3],[4] 7,751 [2],[3]  
Consolidation of VIEs          [2],[3]  
Gains (Losses) in Earnings 69 [2],[3] (219) [2],[3] 192 [2],[3],[4] 456 [2],[3]  
Gains (Losses) in OCI    [2],[3]    [2],[3]    [2],[3],[4]    [2],[3]  
Gross Purchases 750 [2],[3] 1,084 [2],[3] 1,995 [2],[3],[4] 4,664 [2],[3]  
Gross Sales (848) [2],[3] (757) [2],[3] (3,498) [2],[3],[4] (5,294) [2],[3]  
Gross Issuances    [2],[3]    [2],[3]    [2],[3],[4]    [2],[3]  
Gross Settlements (101) [2],[3] (561) [2],[3] (846) [2],[3],[4] (1,080) [2],[3]  
Gross Transfers into Level 3 158 [2],[3] 635 [2],[3] 315 [2],[3],[4] 1,450 [2],[3]  
Gross Transfers out of Level 3 (314) [2],[3] (142) [2],[3] (865) [2],[3],[4] (455) [2],[3]  
Balance, ending 4,173 [2],[3] 7,492 [2],[3] 4,173 [2],[3] 7,492 [2],[3]  
Equity securities [Member]
          
Reconciliation of all assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs Level(3)          
Balance, beginning 597 [2] 608 [2] 544 [2] 557 [2]  
Consolidation of VIEs          [2]  
Gains (Losses) in Earnings 15 [2] (8) [2] 24 [2] 57 [2]  
Gains (Losses) in OCI    [2]    [2]    [2]    [2]  
Gross Purchases 43 [2] 103 [2] 167 [2] 278 [2]  
Gross Sales (12) [2] (92) [2] (159) [2] (284) [2]  
Gross Issuances    [2]    [2]    [2]    [2]  
Gross Settlements (9) [2] (25) [2] 27 [2] (140) [2]  
Gross Transfers into Level 3 5 [2] 11 [2] 38 [2] 131 [2]  
Gross Transfers out of Level 3 (66) [2] 0 [2] (68) [2] (2) [2]  
Balance, ending 573 [2] 597 [2] 573 [2] 597 [2]  
Non-U.S. sovereign debt [Member]
          
Reconciliation of all assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs Level(3)          
Balance, beginning 389 [2] 391 [2] 342 [2] 243 [2]  
Consolidation of VIEs          [2]  
Gains (Losses) in Earnings 7 [2] (17) [2] 5 [2] 68 [2]  
Gains (Losses) in OCI    [2]    [2]    [2]    [2]  
Gross Purchases 30 [2] 3 [2] 338 [2] 125 [2]  
Gross Sales (112) [2] (3) [2] (359) [2] (18) [2]  
Gross Issuances    [2]    [2]    [2]    [2]  
Gross Settlements (4) [2]    [2] (4) [2] (3) [2]  
Gross Transfers into Level 3    [2] 1 [2]    [2] 4 [2]  
Gross Transfers out of Level 3 (7) [2] 0 [2] (19) [2] (44) [2]  
Balance, ending 303 [2] 375 [2] 303 [2] 375 [2]  
Mortgage trading loans and ABS [Member]
          
Reconciliation of all assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs Level(3)          
Balance, beginning 4,818 [2] 5,519 [2] 3,689 [2],[4] 6,908 [2]  
Consolidation of VIEs          [2]  
Gains (Losses) in Earnings 111 [2] (112) [2] 194 [2],[4] 530 [2]  
Gains (Losses) in OCI    [2]    [2]    [2],[4]    [2]  
Gross Purchases 380 [2] 97 [2] 1,747 [2],[4] 1,929 [2]  
Gross Sales (279) [2] (1,378) [2] (915) [2],[4] (4,624) [2]  
Gross Issuances    [2]    [2]    [2],[4]    [2]  
Gross Settlements (124) [2] (80) [2] (386) [2],[4] (308) [2]  
Gross Transfers into Level 3 3 [2] 18 [2] 745 [2],[4] 19 [2]  
Gross Transfers out of Level 3 (3) [2] (293) [2] (168) [2],[4] (683) [2]  
Balance, ending 4,906 [2] 3,771 [2] 4,906 [2] 3,771 [2]  
Derivative assets [Member]
          
Reconciliation of all assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs Level(3)          
Balance, beginning 4,601 [2],[5] 5,418 [2],[6] 5,866 [2],[5] 7,745 [2],[6]  
Consolidation of VIEs          [2],[6]  
Gains (Losses) in Earnings (256) [2],[5] 3,211 [2],[6] 17 [2],[5] 5,456 [2],[6]  
Gains (Losses) in OCI    [2],[5]    [2],[6]    [2],[5]    [2],[6]  
Gross Purchases 78 [2],[5] 154 [2],[6] 791 [2],[5] 1,040 [2],[6]  
Gross Sales (211) [2],[5] (200) [2],[6] (833) [2],[5] (1,460) [2],[6]  
Gross Issuances    [2],[5]    [2],[6]    [2],[5]    [2],[6]  
Gross Settlements (918) [2],[5] (2,950) [2],[6] (2,228) [2],[5] (7,010) [2],[6]  
Gross Transfers into Level 3 (350) [2],[5] 285 [2],[6] (283) [2],[6] 625 [2],[6]  
Gross Transfers out of Level 3 16 [2],[5] 374 [2],[6] (370) [2],[6] (104) [2],[6]  
Balance, ending 2,960 [2],[5] 6,292 [2],[6] 2,960 [2],[5] 6,292 [2],[6]  
Available-for-sale debt securities [Member]
          
Reconciliation of all assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs Level(3)          
Balance, beginning 5,816 [2] 13,462 [2] 8,012 [2] 15,873 [2]  
Consolidation of VIEs          [2]  
Gains (Losses) in Earnings 7 [2] (62) [2] (3) [2] (47) [2]  
Gains (Losses) in OCI 21 [2] 0 [2] 88 [2]    [2]  
Gross Purchases 600 [2] 4,448 [2] 1,556 [2] 6,725 [2]  
Gross Sales (63) [2] (2,206) [2] (448) [2] (2,628) [2]  
Gross Issuances    [2]    [2]    [2]    [2]  
Gross Settlements (82) [2] (1,112) [2] (2,135) [2] (5,795) [2]  
Gross Transfers into Level 3    [2] 1 [2]    [2] 412 [2]  
Gross Transfers out of Level 3 0 [2] (769) [2] (771) [2] (778) [2]  
Balance, ending 6,299 [2] 13,762 [2] 6,299 [2] 13,762 [2]  
Agency [Member]
          
Reconciliation of all assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs Level(3)          
Balance, beginning   0 [2] 37 [2] 4 [2]  
Consolidation of VIEs          [2]  
Gains (Losses) in Earnings      [2]    [2]    [2]  
Gains (Losses) in OCI      [2]    [2]    [2]  
Gross Purchases   13 [2]    [2] 13 [2]  
Gross Sales      [2]    [2] 0 [2]  
Gross Issuances      [2]    [2]    [2]  
Gross Settlements      [2] (4) [2]    [2]  
Gross Transfers into Level 3      [2]    [2]    [2]  
Gross Transfers out of Level 3   0 [2] (33) [2] (4) [2]  
Balance, ending   13 [2]   13 [2]  
Agency-collateralized mortgage obligations [Member]
          
Reconciliation of all assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs Level(3)          
Balance, beginning   55 [2]      
Consolidation of VIEs          [2]  
Gains (Losses) in Earnings      [2]      [2]  
Gains (Losses) in OCI      [2]      [2]  
Gross Purchases      [2]   56 [2]  
Gross Sales      [2]      [2]  
Gross Issuances      [2]      [2]  
Gross Settlements      [2]   (1) [2]  
Gross Transfers into Level 3      [2]      [2]  
Gross Transfers out of Level 3      [2]      [2]  
Balance, ending   55 [2]   55 [2]  
Non-Agency Residential MBS [Member]
          
Reconciliation of all assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs Level(3)          
Balance, beginning 1 [2] 1,094 [2] 860 [2] 1,468 [2]  
Consolidation of VIEs          [2]  
Gains (Losses) in Earnings   (41) [2] (69) [2] (86) [2]  
Gains (Losses) in OCI    [2] 52 [2] 19 [2] 24 [2]  
Gross Purchases    [2] 9 [2]    [2] 11 [2]  
Gross Sales 0 [2] (3) [2] (305) [2] (293) [2]  
Gross Issuances    [2]    [2]    [2]    [2]  
Gross Settlements    [2] (32) [2] (2) [2] (321) [2]  
Gross Transfers into Level 3    [2] 1 [2]    [2] 277 [2]  
Gross Transfers out of Level 3 0 [2]    [2] (502) [2]    [2]  
Balance, ending 1 [2] 1,080 [2] 1 [2] 1,080 [2]  
Non-Agency Commercial MBS [Member]
          
Reconciliation of all assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs Level(3)          
Balance, beginning 24 [2] 18 [2] 40 [2] 19 [2]  
Consolidation of VIEs          [2]  
Gains (Losses) in Earnings    [2]    [2]    [2]    [2]  
Gains (Losses) in OCI    [2]    [2]    [2]    [2]  
Gross Purchases    [2] 17 [2]    [2] 17  
Gross Sales    [2]    [2] (11) [2]    [2]  
Gross Issuances    [2]    [2]    [2]    [2]  
Gross Settlements (1) [2]    [2] (6) [2] (1) [2]  
Gross Transfers into Level 3    [2]    [2]    [2]    [2]  
Gross Transfers out of Level 3    [2]    [2]    [2]    [2]  
Balance, ending 23 [2] 35 [2] 23 [2] 35 [2]  
Non-U.S. Securities [Member]
          
Reconciliation of all assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs Level(3)          
Balance, beginning   88 [2]   3 [2]  
Consolidation of VIEs          [2]  
Gains (Losses) in Earnings      [2]      [2]  
Gains (Losses) in OCI      [2]      [2]  
Gross Purchases      [2]      [2]  
Gross Sales      [2]      [2]  
Gross Issuances      [2]      [2]  
Gross Settlements      [2]      [2]  
Gross Transfers into Level 3      [2]   88 [2]  
Gross Transfers out of Level 3   (88) [2]   (91) [2]  
Balance, ending      [2]      [2]  
Corporate Bond [Member]
          
Reconciliation of all assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs Level(3)          
Balance, beginning 93 [2] 224 [2] 162 137 [2]  
Consolidation of VIEs          [2]  
Gains (Losses) in Earnings   (4) [2] (2) [2] (2) [2]  
Gains (Losses) in OCI    [2] (1) [2]    [2] (2) [2]  
Gross Purchases    [2] 162 [2] (2) [2] 248 [2]  
Gross Sales    [2] (9) [2]    [2] (16) [2]  
Gross Issuances    [2]    [2]    [2]    [2]  
Gross Settlements    [2]    [2] (38) [2]    [2]  
Gross Transfers into Level 3    [2]    [2]    [2] 7 [2]  
Gross Transfers out of Level 3    [2] (8) [2] (27) [2] (8) [2]  
Balance, ending 93 [2] 364 [2] 93 [2] 364 [2]  
Other taxable securities [Member]
          
Reconciliation of all assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs Level(3)          
Balance, beginning 4,558 [2] 10,374 [2] 4,265 [2] 13,018 [2]  
Consolidation of VIEs          [2]  
Gains (Losses) in Earnings   (25) [2] 7 [2] 27 [2]  
Gains (Losses) in OCI 28 [2] (42) [2] 51 [2] 20 [2]  
Gross Purchases 600 [2] 2,068 [2] 1,558 [2] 3,518 [2]  
Gross Sales    [2] (2,187) [2]    [2] (2,240) [2]  
Gross Issuances    [2]    [2]    [2]    [2]  
Gross Settlements (65) [2] (846) [2] (551) [2] (5,001) [2]  
Gross Transfers into Level 3    [2]    [2]    [2] 2 [2]  
Gross Transfers out of Level 3 0 [2]    [2] (209) [2] (2) [2]  
Balance, ending 5,121 [2] 9,342 [2] 5,121 [2] 9,342 [2]  
Tax-exempt securities [Member]
          
Reconciliation of all assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs Level(3)          
Balance, beginning 1,140 [2] 1,609 [2] 2,648 [2] 1,224 [2]  
Consolidation of VIEs          [2]  
Gains (Losses) in Earnings 7 [2] 8 [2] 61 [2] 14 [2]  
Gains (Losses) in OCI (7) [2] (9) [2] 18 [2] (42) [2]  
Gross Purchases    [2] 2,179 [2]    [2] 2,862 [2]  
Gross Sales (63) [2] (7) [2] (132) [2] (79) [2]  
Gross Issuances    [2]    [2]    [2]    [2]  
Gross Settlements (16) [2] (234) [2] (1,534) [2] (471) [2]  
Gross Transfers into Level 3    [2]    [2]    [2] 38 [2]  
Gross Transfers out of Level 3    [2] (673) [2]    [2] (673) [2]  
Balance, ending 1,061 [2] 2,873 [2] 1,061 [2] 2,873 [2]  
Loans and leases [Member]
          
Reconciliation of all assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs Level(3)          
Balance, beginning 1,635 [2],[3],[7] 9,597 [2],[3],[7] 2,744 [2],[3],[7] 3,321 [2],[3],[7]  
Consolidation of VIEs       5,194 [2],[3],[7]  
Gains (Losses) in Earnings 69 [2],[3],[7] (209) [2],[3],[7] 284 [2],[3],[7] 0 [2],[3],[7]  
Gains (Losses) in OCI    [2],[3],[7]    [2],[3],[7]    [2],[3],[7]    [2],[3],[7]  
Gross Purchases 317 [2],[3],[7]    [2],[3],[7] 317 [2],[3],[7] 21 [2],[3],[7]  
Gross Sales (150) [2],[3],[7] 0 [2],[3],[7] (1,308) [2],[3],[7] (376) [2],[3],[7]  
Gross Issuances    [2],[3],[7] 451 [2],[3],[7]    [2],[3],[7] 3,118 [2],[3],[7]  
Gross Settlements (65) [2],[3],[7] (194) [2],[3],[7] (229) [2],[3],[7] (1,638) [2],[3],[7]  
Gross Transfers into Level 3 450 [2],[3],[7]    [2],[3],[7] 450 [2],[3],[7] 5 [2],[3],[7]  
Gross Transfers out of Level 3 (3) [2],[3],[7] (4,345) [2],[3],[7] (5) [2],[3],[7] (4,345) [2],[3],[7]  
Balance, ending 2,253 [2],[3],[7] 5,300 [2],[3],[7] 2,253 [2],[3],[7] 5,300 [2],[3],[7]  
Mortgage servicing rights [Member]
          
Reconciliation of all assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs Level(3)          
Balance, beginning 5,708 [2],[7] 12,372 [2],[7] 7,378 [2],[7] 14,900 [2],[7]  
Consolidation of VIEs          [2],[7]  
Gains (Losses) in Earnings (360) [2],[7] (3,860) [2],[7] (1,297) [2],[7] (6,060) [2],[7]  
Gains (Losses) in OCI    [2],[7]    [2],[7]    [2],[7]    [2],[7]  
Gross Purchases    [2],[7]    [2],[7]    [2],[7]    [2],[7]  
Gross Sales (15) [2],[7] (218) [2],[7] (113) [2],[7] (452) [2],[7]  
Gross Issuances 100 [2],[7] 251 [2],[7] 268 [2],[7] 1,502 [2],[7]  
Gross Settlements (346) [2],[7] (665) [2],[7] (1,149) [2],[7] (2,010) [2],[7]  
Gross Transfers into Level 3    [2],[7]    [2],[7]    [2],[7]    [2],[7]  
Gross Transfers out of Level 3    [2],[7]    [2],[7]    [2],[7]    [2],[7]  
Balance, ending 5,087 [2],[7] 7,880 [2],[7] 5,087 [2],[7] 7,880 [2],[7]  
Loans held-for-sale [Member]
          
Reconciliation of all assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs Level(3)          
Balance, beginning 2,741 [2],[3] 4,012 [2],[3] 3,387 [2],[3] 4,140 [2],[3]  
Consolidation of VIEs          [2],[3]  
Gains (Losses) in Earnings 86 [2],[3] (142) [2],[3] 265 [2],[3] 43 [2],[3]  
Gains (Losses) in OCI    [2],[3]    [2],[3]    [2],[3]    [2],[3]  
Gross Purchases 596 [2],[3] 15 [2],[3] 606 [2],[3] 138 [2],[3]  
Gross Sales (19) [2],[3] (200) [2],[3] (40) [2],[3] (443) [2],[3]  
Gross Issuances    [2],[3]    [2],[3]    [2],[3]    [2],[3]  
Gross Settlements (104) [2],[3] (112) [2],[3] (330) [2],[3] (704) [2],[3]  
Gross Transfers into Level 3 13 [2],[3] 61 [2],[3] 57 [2],[3] 502 [2],[3]  
Gross Transfers out of Level 3    [2],[3] (4) [2],[3] (632) [2],[3] (46) [2],[3]  
Balance, ending 3,313 [2],[3] 3,630 [2],[3] 3,313 [2],[3] 3,630 [2],[3]  
Other assets [Member]
          
Reconciliation of all assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs Level(3)          
Balance, beginning 3,136 [2],[8] 4,549 [2],[9] 4,235 [2],[8] 6,922 [2],[9]  
Consolidation of VIEs          [2],[9]  
Gains (Losses) in Earnings 24 [2],[8] 54 [2],[9] (110) [2],[8] 356 [2],[9]  
Gains (Losses) in OCI    [2],[8]    [2],[9]    [2],[8]    [2],[9]  
Gross Purchases 40 [2],[8] 1,703 [2],[9] 89 [2],[8] 1,875 [2],[9]  
Gross Sales (183) [2],[8] (290) [2],[9] (950) [2],[8] (1,486) [2],[9]  
Gross Issuances    [2],[8]    [2],[9]    [2],[8]    [2],[9]  
Gross Settlements (39) [2],[8] (266) [2],[9] (275) [2],[8] (659) [2],[9]  
Gross Transfers into Level 3    [2],[8]    [2],[9]    [2],[8] 375 [2],[9]  
Gross Transfers out of Level 3    [2],[8]    [2],[9] (11) [2],[8] (1,633) [2],[9]  
Balance, ending $ 2,978 [2],[8] $ 5,750 [2],[9] $ 2,978 [2],[8] $ 5,750 [2],[9]  
[1] For further disaggregation of derivative assets and liabilities, see Note 3 – Derivatives.
[2] Assets (liabilities). For assets, increase / (decrease) to Level 3 and for liabilities, (increase) / decrease to Level 3.
[3] Amounts represent items that are accounted for under the fair value option.
[4] During the nine months ended September 30, 2012, approximately $900 million was reclassified from Trading account assets - Corporate securities, trading loans and other to Trading account assets - Mortgage trading loans and ABS. In the table above, this reclassification is presented as a sale of Trading account assets - Corporate securities, trading loans and other and as a purchase of Trading account assets - Mortgage trading loans and ABS.
[5] Net derivatives include derivative assets of $10.0 billion and derivative liabilities of $7.0 billion.
[6] Net derivatives include derivative assets of $16.0 billion and derivative liabilities of $9.8 billion.
[7] Issuances represent loan originations and mortgage servicing rights retained following securitizations or whole loan sales.
[8] Other assets is primarily comprised of net monoline exposure to a single counterparty and private equity investments.
[9] Other assets is primarily comprised of AFS marketable equity securities.