Fair Value Measurement - Changes in Level 3 Recurring Measurements (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Net derivative receivables:
Fair value, beginning balance	$ (4,437,000,000)	$ (3,110,000,000)	$ (3,796,000,000)	$ (4,250,000,000)
Total realized/unrealized gains/(losses)	(1,004,000,000)	385,000,000	(926,000,000)	1,935,000,000
Purchases	240,000,000	701,000,000	482,000,000	1,595,000,000
Sales	(206,000,000)	(664,000,000)	(938,000,000)	(2,018,000,000)
Settlements	(342,000,000)	406,000,000	(556,000,000)	498,000,000
Transfers into level 3	(166,000,000)	(164,000,000)	(406,000,000)	(386,000,000)
Transfers (out of) level 3	923,000,000	60,000,000	1,148,000,000	240,000,000
Fair value, ending balance	(4,992,000,000)	(2,386,000,000)	(4,992,000,000)	(2,386,000,000)
Change in unrealized gains/(losses) related to financial instruments held	$ (1,062,000,000)	164,000,000	$ (2,237,000,000)	736,000,000
Level 3 Rollforward Supplemental Data [Abstract]
Level 3 assets as a percentage of total firm assets at fair value	2.00%		2.00%		3.00%
Level 3 liabilities as a percentage of total firm liabilities at fair value	15.00%		15.00%		15.00%
Deposits
Liabilities:
Fair value, beginning balance	$ 4,066,000,000	4,305,000,000	$ 4,169,000,000	4,142,000,000
Total realized/unrealized (gains)/losses	0	(84,000,000)	241,000,000	(125,000,000)
Purchases	0	0	0	0
Sales	0	0	0	0
Issuances	153,000,000	517,000,000	580,000,000	1,272,000,000
Settlements	(188,000,000)	(170,000,000)	(504,000,000)	(425,000,000)
Transfers into level 3	12,000,000	1,000,000	12,000,000	2,000,000
Transfers (out of) level 3	(407,000,000)	(129,000,000)	(862,000,000)	(426,000,000)
Fair value, ending balance	3,636,000,000	4,440,000,000	3,636,000,000	4,440,000,000
Change in unrealized (gains)/losses related to financials instruments held	16,000,000	(82,000,000)	250,000,000	(115,000,000)
Short-term borrowings
Liabilities:
Fair value, beginning balance	2,052,000,000	2,209,000,000	1,523,000,000	1,665,000,000
Total realized/unrealized (gains)/losses	24,000,000	(47,000,000)	142,000,000	(229,000,000)
Purchases	0	0	0	0
Sales	0	0	0	0
Issuances	949,000,000	713,000,000	2,637,000,000	2,783,000,000
Settlements	(1,040,000,000)	(885,000,000)	(2,265,000,000)	(2,245,000,000)
Transfers into level 3	17,000,000	6,000,000	85,000,000	61,000,000
Transfers (out of) level 3	(1,000,000)	(25,000,000)	(121,000,000)	(64,000,000)
Fair value, ending balance	2,001,000,000	1,971,000,000	2,001,000,000	1,971,000,000
Change in unrealized (gains)/losses related to financials instruments held	28,000,000	(31,000,000)	74,000,000	26,000,000
Total debt and equity instruments
Liabilities:
Fair value, beginning balance	45,000,000	43,000,000	50,000,000	39,000,000
Total realized/unrealized (gains)/losses	0	36,000,000	0	28,000,000
Purchases	(5,000,000)	(6,000,000)	(12,000,000)	(68,000,000)
Sales	25,000,000	19,000,000	41,000,000	95,000,000
Issuances	0	0	0	0
Settlements	1,000,000	(2,000,000)	1,000,000	(1,000,000)
Transfers into level 3	2,000,000	7,000,000	9,000,000	9,000,000
Transfers (out of) level 3	0	(1,000,000)	(21,000,000)	(6,000,000)
Fair value, ending balance	68,000,000	96,000,000	68,000,000	96,000,000
Change in unrealized (gains)/losses related to financials instruments held	0	36,000,000	(1,000,000)	11,000,000
Accounts payable and other liabilities
Liabilities:
Fair value, beginning balance	92,000,000	8,000,000	10,000,000	13,000,000
Total realized/unrealized (gains)/losses	(6,000,000)	1,000,000	(7,000,000)	0
Purchases	(71,000,000)	0	(79,000,000)	(6,000,000)
Sales	4,000,000	0	94,000,000	1,000,000
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into level 3	0	3,000,000	1,000,000	4,000,000
Transfers (out of) level 3	0	0	0	0
Fair value, ending balance	19,000,000	12,000,000	19,000,000	12,000,000
Change in unrealized (gains)/losses related to financials instruments held	(2,000,000)	1,000,000	4,000,000	0
Beneficial interests issued by consolidated VIEs
Liabilities:
Fair value, beginning balance	0	1,000,000	1,000,000	39,000,000
Total realized/unrealized (gains)/losses	0	0	(1,000,000)	0
Purchases	0	0	0	0
Sales	0	0	0	0
Issuances	0	0	0	0
Settlements	0	0	0	(38,000,000)
Transfers into level 3	0	0	0	0
Transfers (out of) level 3	0	0	0	0
Fair value, ending balance	0	1,000,000	0	1,000,000
Change in unrealized (gains)/losses related to financials instruments held	0	0	0	0
Long-term debt
Liabilities:
Fair value, beginning balance	21,863,000,000	17,632,000,000	19,418,000,000	16,125,000,000
Total realized/unrealized (gains)/losses	187,000,000	194,000,000	1,915,000,000	(396,000,000)
Purchases	0	0	0	0
Sales	0	0	0	0
Issuances	2,230,000,000	3,551,000,000	6,929,000,000	9,792,000,000
Settlements	(1,758,000,000)	(1,809,000,000)	(5,675,000,000)	(6,195,000,000)
Transfers into level 3	49,000,000	59,000,000	522,000,000	653,000,000
Transfers (out of) level 3	(222,000,000)	(219,000,000)	(760,000,000)	(571,000,000)
Fair value, ending balance	22,349,000,000	19,408,000,000	22,349,000,000	19,408,000,000
Change in unrealized (gains)/losses related to financials instruments held	89,000,000	192,000,000	2,010,000,000	(576,000,000)
Debit valuation adjustment for fair value option financial liabilities
Level 3 Rollforward Supplemental Data [Abstract]
Unrealized (gains)/losses on liabilities recorded in OCI	(62,000,000)	123,000,000	108,000,000	0
Interest rate
Net derivative receivables:
Fair value, beginning balance	(544,000,000)	489,000,000	(38,000,000)	264,000,000
Total realized/unrealized gains/(losses)	88,000,000	236,000,000	(575,000,000)	576,000,000
Purchases	39,000,000	28,000,000	86,000,000	83,000,000
Sales	(15,000,000)	(22,000,000)	(102,000,000)	(77,000,000)
Settlements	53,000,000	(101,000,000)	174,000,000	(234,000,000)
Transfers into level 3	10,000,000	68,000,000	22,000,000	40,000,000
Transfers (out of) level 3	50,000,000	(7,000,000)	114,000,000	39,000,000
Fair value, ending balance	(319,000,000)	691,000,000	(319,000,000)	691,000,000
Change in unrealized gains/(losses) related to financial instruments held	(15,000,000)	216,000,000	(694,000,000)	498,000,000
Credit
Net derivative receivables:
Fair value, beginning balance	(232,000,000)	(24,000,000)	(107,000,000)	(35,000,000)
Total realized/unrealized gains/(losses)	(65,000,000)	(19,000,000)	(209,000,000)	19,000,000
Purchases	3,000,000	1,000,000	16,000,000	3,000,000
Sales	(3,000,000)	0	(5,000,000)	(7,000,000)
Settlements	(23,000,000)	47,000,000	(13,000,000)	22,000,000
Transfers into level 3	3,000,000	6,000,000	7,000,000	5,000,000
Transfers (out of) level 3	0	16,000,000	(6,000,000)	20,000,000
Fair value, ending balance	(317,000,000)	27,000,000	(317,000,000)	27,000,000
Change in unrealized gains/(losses) related to financial instruments held	(68,000,000)	(15,000,000)	(169,000,000)	7,000,000
Foreign exchange
Net derivative receivables:
Fair value, beginning balance	(193,000,000)	(245,000,000)	(297,000,000)	(396,000,000)
Total realized/unrealized gains/(losses)	(653,000,000)	(56,000,000)	(840,000,000)	184,000,000
Purchases	2,000,000	29,000,000	13,000,000	42,000,000
Sales	(1,000,000)	(7,000,000)	(18,000,000)	(15,000,000)
Settlements	(1,000,000)	(49,000,000)	294,000,000	(46,000,000)
Transfers into level 3	6,000,000	(2,000,000)	(19,000,000)	(114,000,000)
Transfers (out of) level 3	(1,000,000)	28,000,000	26,000,000	43,000,000
Fair value, ending balance	(841,000,000)	(302,000,000)	(841,000,000)	(302,000,000)
Change in unrealized gains/(losses) related to financial instruments held	(657,000,000)	(54,000,000)	(815,000,000)	42,000,000
Equity
Net derivative receivables:
Fair value, beginning balance	(2,560,000,000)	(2,578,000,000)	(2,225,000,000)	(3,409,000,000)
Total realized/unrealized gains/(losses)	(382,000,000)	(94,000,000)	328,000,000	688,000,000
Purchases	174,000,000	643,000,000	335,000,000	1,467,000,000
Sales	(118,000,000)	(635,000,000)	(573,000,000)	(1,919,000,000)
Settlements	(377,000,000)	622,000,000	(1,062,000,000)	1,043,000,000
Transfers into level 3	(203,000,000)	(251,000,000)	(418,000,000)	(324,000,000)
Transfers (out of) level 3	(2,000,000)	16,000,000	147,000,000	177,000,000
Fair value, ending balance	(3,468,000,000)	(2,277,000,000)	(3,468,000,000)	(2,277,000,000)
Change in unrealized gains/(losses) related to financial instruments held	(362,000,000)	(121,000,000)	(1,193,000,000)	31,000,000
Commodity
Net derivative receivables:
Fair value, beginning balance	(908,000,000)	(752,000,000)	(1,129,000,000)	(674,000,000)
Total realized/unrealized gains/(losses)	8,000,000	318,000,000	370,000,000	468,000,000
Purchases	22,000,000	0	32,000,000	0
Sales	(69,000,000)	0	(240,000,000)	0
Settlements	6,000,000	(113,000,000)	51,000,000	(287,000,000)
Transfers into level 3	18,000,000	15,000,000	2,000,000	7,000,000
Transfers (out of) level 3	876,000,000	7,000,000	867,000,000	(39,000,000)
Fair value, ending balance	(47,000,000)	(525,000,000)	(47,000,000)	(525,000,000)
Change in unrealized gains/(losses) related to financial instruments held	40,000,000	138,000,000	634,000,000	158,000,000
Total mortgage-backed securities
Assets:
Fair value, beginning balance	668,000,000	583,000,000	624,000,000	378,000,000
Total realized/unrealized gains/(losses)	(71,000,000)	2,000,000	(84,000,000)	8,000,000
Purchases	429,000,000	14,000,000	849,000,000	400,000,000
Sales	(112,000,000)	(34,000,000)	(382,000,000)	(153,000,000)
Settlements	(45,000,000)	(20,000,000)	(117,000,000)	(75,000,000)
Transfers into level 3	0	110,000,000	31,000,000	180,000,000
Transfers (out of) level 3	(29,000,000)	(36,000,000)	(81,000,000)	(119,000,000)
Fair value, ending balance	840,000,000	619,000,000	840,000,000	619,000,000
Change in unrealized gains/(losses) related to financial instruments held	(71,000,000)	0	(116,000,000)	6,000,000
Mortgage-backed securities, U.S. GSEs and government agencies
Assets:
Fair value, beginning balance	617,000,000	478,000,000	549,000,000	307,000,000
Total realized/unrealized gains/(losses)	(71,000,000)	2,000,000	(111,000,000)	5,000,000
Purchases	424,000,000	14,000,000	747,000,000	348,000,000
Sales	(104,000,000)	(28,000,000)	(272,000,000)	(126,000,000)
Settlements	(45,000,000)	(17,000,000)	(83,000,000)	(56,000,000)
Transfers into level 3	0	83,000,000	1,000,000	92,000,000
Transfers (out of) level 3	(10,000,000)	(3,000,000)	(20,000,000)	(41,000,000)
Fair value, ending balance	811,000,000	529,000,000	811,000,000	529,000,000
Change in unrealized gains/(losses) related to financial instruments held	(70,000,000)	0	(116,000,000)	3,000,000
Mortgage-backed securities, Residential - nonagency
Assets:
Fair value, beginning balance	42,000,000	87,000,000	64,000,000	60,000,000
Total realized/unrealized gains/(losses)	0	1,000,000	25,000,000	1,000,000
Purchases	2,000,000	0	83,000,000	45,000,000
Sales	(3,000,000)	(6,000,000)	(86,000,000)	(19,000,000)
Settlements	0	(3,000,000)	(20,000,000)	(6,000,000)
Transfers into level 3	0	18,000,000	15,000,000	58,000,000
Transfers (out of) level 3	(17,000,000)	(20,000,000)	(57,000,000)	(62,000,000)
Fair value, ending balance	24,000,000	77,000,000	24,000,000	77,000,000
Change in unrealized gains/(losses) related to financial instruments held	(1,000,000)	1,000,000	(1,000,000)	4,000,000
Mortgage-backed securities, Commercial - nonagency
Assets:
Fair value, beginning balance	9,000,000	18,000,000	11,000,000	11,000,000
Total realized/unrealized gains/(losses)	0	(1,000,000)	2,000,000	2,000,000
Purchases	3,000,000	0	19,000,000	7,000,000
Sales	(5,000,000)	0	(24,000,000)	(8,000,000)
Settlements	0		(14,000,000)	(13,000,000)
Transfers into level 3	0	9,000,000	15,000,000	30,000,000
Transfers (out of) level 3	(2,000,000)	(13,000,000)	(4,000,000)	(16,000,000)
Fair value, ending balance	5,000,000	13,000,000	5,000,000	13,000,000
Change in unrealized gains/(losses) related to financial instruments held	0	(1,000,000)	1,000,000	(1,000,000)
Total debt and equity instruments
Assets:
Fair value, beginning balance	4,369,000,000	4,543,000,000	4,168,000,000	5,370,000,000
Total realized/unrealized gains/(losses)	(69,000,000)	72,000,000	109,000,000	(157,000,000)
Purchases	760,000,000	452,000,000	2,224,000,000	2,632,000,000
Sales	(539,000,000)	(421,000,000)	(1,606,000,000)	(2,520,000,000)
Settlements	(195,000,000)	(276,000,000)	(687,000,000)	(828,000,000)
Transfers into level 3	280,000,000	330,000,000	816,000,000	976,000,000
Transfers (out of) level 3	(223,000,000)	(472,000,000)	(641,000,000)	(1,245,000,000)
Fair value, ending balance	4,383,000,000	4,228,000,000	4,383,000,000	4,228,000,000
Change in unrealized gains/(losses) related to financial instruments held	(112,000,000)	(7,000,000)	(10,000,000)	(269,000,000)
Total debt instruments
Assets:
Fair value, beginning balance	3,911,000,000	3,849,000,000	3,635,000,000	4,385,000,000
Total realized/unrealized gains/(losses)	(73,000,000)	22,000,000	95,000,000	53,000,000
Purchases	715,000,000	433,000,000	2,141,000,000	2,486,000,000
Sales	(514,000,000)	(373,000,000)	(1,498,000,000)	(2,372,000,000)
Settlements	(180,000,000)	(239,000,000)	(624,000,000)	(752,000,000)
Transfers into level 3	234,000,000	246,000,000	673,000,000	887,000,000
Transfers (out of) level 3	(212,000,000)	(452,000,000)	(541,000,000)	(1,201,000,000)
Fair value, ending balance	3,881,000,000	3,486,000,000	3,881,000,000	3,486,000,000
Change in unrealized gains/(losses) related to financial instruments held	(119,000,000)	1,000,000	(44,000,000)	(30,000,000)
U.S. Treasury, GSEs and government agencies
Assets:
Fair value, beginning balance	0	0	0	1,000,000
Total realized/unrealized gains/(losses)	0	0	0	0
Purchases	0	0	0	0
Sales	0	0	0	0
Settlements	0	0	0	0
Transfers into level 3	0	0	0	0
Transfers (out of) level 3	0	0	0	(1,000,000)
Fair value, ending balance	0	0	0	0
Change in unrealized gains/(losses) related to financial instruments held	0	0	0	0
Obligations of U.S. states and municipalities
Assets:
Fair value, beginning balance	680,000,000	736,000,000	689,000,000	744,000,000
Total realized/unrealized gains/(losses)	(2,000,000)	8,000,000	12,000,000	(3,000,000)
Purchases	27,000,000	26,000,000	85,000,000	107,000,000
Sales	(77,000,000)	(70,000,000)	(152,000,000)	(70,000,000)
Settlements	(1,000,000)	(1,000,000)	(7,000,000)	(79,000,000)
Transfers into level 3	0	0	0	0
Transfers (out of) level 3	0	0	0	0
Fair value, ending balance	627,000,000	699,000,000	627,000,000	699,000,000
Change in unrealized gains/(losses) related to financial instruments held	(2,000,000)	7,000,000	13,000,000	(3,000,000)
Non-U.S. government debt securities
Assets:
Fair value, beginning balance	190,000,000	183,000,000	155,000,000	78,000,000
Total realized/unrealized gains/(losses)	(1,000,000)	(9,000,000)	(2,000,000)	(19,000,000)
Purchases	40,000,000	44,000,000	228,000,000	395,000,000
Sales	(74,000,000)	(29,000,000)	(231,000,000)	(213,000,000)
Settlements	0	(2,000,000)	0	(2,000,000)
Transfers into level 3	3,000,000	1,000,000	14,000,000	18,000,000
Transfers (out of) level 3	(12,000,000)	(24,000,000)	(18,000,000)	(93,000,000)
Fair value, ending balance	146,000,000	164,000,000	146,000,000	164,000,000
Change in unrealized gains/(losses) related to financial instruments held	(1,000,000)	(9,000,000)	3,000,000	(18,000,000)
Corporate debt securities
Assets:
Fair value, beginning balance	562,000,000	274,000,000	334,000,000	312,000,000
Total realized/unrealized gains/(losses)	45,000,000	(2,000,000)	74,000,000	(6,000,000)
Purchases	56,000,000	156,000,000	340,000,000	297,000,000
Sales	(167,000,000)	(87,000,000)	(236,000,000)	(227,000,000)
Settlements	0	(4,000,000)	(53,000,000)	(15,000,000)
Transfers into level 3	17,000,000	82,000,000	96,000,000	249,000,000
Transfers (out of) level 3	(29,000,000)	(24,000,000)	(71,000,000)	(215,000,000)
Fair value, ending balance	484,000,000	395,000,000	484,000,000	395,000,000
Change in unrealized gains/(losses) related to financial instruments held	3,000,000	(3,000,000)	15,000,000	(1,000,000)
Loans
Assets:
Fair value, beginning balance	1,778,000,000	1,986,000,000	1,706,000,000	2,719,000,000
Total realized/unrealized gains/(losses)	(44,000,000)	17,000,000	95,000,000	58,000,000
Purchases	152,000,000	188,000,000	609,000,000	1,223,000,000
Sales	(82,000,000)	(146,000,000)	(416,000,000)	(1,680,000,000)
Settlements	(132,000,000)	(199,000,000)	(408,000,000)	(528,000,000)
Transfers into level 3	211,000,000	48,000,000	509,000,000	422,000,000
Transfers (out of) level 3	(137,000,000)	(361,000,000)	(349,000,000)	(681,000,000)
Fair value, ending balance	1,746,000,000	1,533,000,000	1,746,000,000	1,533,000,000
Change in unrealized gains/(losses) related to financial instruments held	(46,000,000)	3,000,000	44,000,000	(22,000,000)
Asset-backed securities
Assets:
Fair value, beginning balance	33,000,000	87,000,000	127,000,000	153,000,000
Total realized/unrealized gains/(losses)	0	6,000,000	0	15,000,000
Purchases	11,000,000	5,000,000	30,000,000	64,000,000
Sales	(2,000,000)	(7,000,000)	(81,000,000)	(29,000,000)
Settlements	(2,000,000)	(13,000,000)	(39,000,000)	(53,000,000)
Transfers into level 3	3,000,000	5,000,000	23,000,000	18,000,000
Transfers (out of) level 3	(5,000,000)	(7,000,000)	(22,000,000)	(92,000,000)
Fair value, ending balance	38,000,000	76,000,000	38,000,000	76,000,000
Change in unrealized gains/(losses) related to financial instruments held	(2,000,000)	3,000,000	(3,000,000)	8,000,000
Equity securities
Assets:
Fair value, beginning balance	147,000,000	288,000,000	232,000,000	295,000,000
Total realized/unrealized gains/(losses)	(14,000,000)	20,000,000	(28,000,000)	(1,000,000)
Purchases	10,000,000	6,000,000	33,000,000	99,000,000
Sales	(10,000,000)	(48,000,000)	(92,000,000)	(108,000,000)
Settlements	0		(22,000,000)	(1,000,000)
Transfers into level 3	46,000,000	82,000,000	142,000,000	86,000,000
Transfers (out of) level 3	(9,000,000)	(19,000,000)	(95,000,000)	(41,000,000)
Fair value, ending balance	170,000,000	329,000,000	170,000,000	329,000,000
Change in unrealized gains/(losses) related to financial instruments held	(16,000,000)	(18,000,000)	(21,000,000)	11,000,000
Other
Assets:
Fair value, beginning balance	311,000,000	406,000,000	301,000,000	690,000,000
Total realized/unrealized gains/(losses)	18,000,000	30,000,000	42,000,000	(209,000,000)
Purchases	35,000,000	13,000,000	50,000,000	47,000,000
Sales	(15,000,000)	0	(16,000,000)	(40,000,000)
Settlements	(15,000,000)	(37,000,000)	(41,000,000)	(75,000,000)
Transfers into level 3	0	2,000,000	1,000,000	3,000,000
Transfers (out of) level 3	(2,000,000)	(1,000,000)	(5,000,000)	(3,000,000)
Fair value, ending balance	332,000,000	413,000,000	332,000,000	413,000,000
Change in unrealized gains/(losses) related to financial instruments held	23,000,000	10,000,000	55,000,000	(250,000,000)
Total available-for-sale securities
Assets:
Fair value, beginning balance	0	148,000,000	1,000,000	277,000,000
Total realized/unrealized gains/(losses)	0	0	0	1,000,000
Purchases	1,000,000	0	1,000,000	0
Sales	0	0	0	0
Settlements	0	(86,000,000)	(1,000,000)	(216,000,000)
Transfers into level 3	0	0	0	0
Transfers (out of) level 3	0	0	0	0
Fair value, ending balance	1,000,000	62,000,000	1,000,000	62,000,000
Change in unrealized gains/(losses) related to financial instruments held	0	0	0	1,000,000
Level 3 Rollforward Supplemental Data [Abstract]
Realized gains/(losses) recorded in income	0	0	0	0
Unrealized gains/(losses) recorded in OCI	0	0	0	1,000,000
Mortgage-backed securities
Assets:
Fair value, beginning balance	0	1,000,000	1,000,000	1,000,000
Total realized/unrealized gains/(losses)	0	0	0	0
Purchases	1,000,000	0	1,000,000	0
Sales	0	0	0	0
Settlements	0	0	(1,000,000)	0
Transfers into level 3	0	0	0	0
Transfers (out of) level 3	0	0	0	0
Fair value, ending balance	1,000,000	1,000,000	1,000,000	1,000,000
Change in unrealized gains/(losses) related to financial instruments held	0	0	0	0
Asset-backed securities
Assets:
Fair value, beginning balance	0	147,000,000	0	276,000,000
Total realized/unrealized gains/(losses)	0	0	0	1,000,000
Purchases	0	0	0	0
Sales	0	0	0	0
Settlements	0	(86,000,000)	0	(216,000,000)
Transfers into level 3	0	0	0	0
Transfers (out of) level 3	0	0	0	0
Fair value, ending balance	0	61,000,000	0	61,000,000
Change in unrealized gains/(losses) related to financial instruments held	0	0	0	1,000,000
Loans
Assets:
Fair value, beginning balance	5,000,000	159,000,000	122,000,000	276,000,000
Total realized/unrealized gains/(losses)	0	(1,000,000)	4,000,000	(5,000,000)
Purchases	0	1,000,000	0	123,000,000
Sales	0	0	0	0
Settlements	(4,000,000)	(19,000,000)	(125,000,000)	(180,000,000)
Transfers into level 3	0	0	0	0
Transfers (out of) level 3	0	0	0	(74,000,000)
Fair value, ending balance	1,000,000	140,000,000	1,000,000	140,000,000
Change in unrealized gains/(losses) related to financial instruments held	0	(1,000,000)	0	(5,000,000)
Mortgage servicing rights
Assets:
Fair value, beginning balance	5,093,000,000	6,241,000,000	6,130,000,000	6,030,000,000
Total realized/unrealized gains/(losses)	(447,000,000)	98,000,000	(1,572,000,000)	576,000,000
Purchases	388,000,000	291,000,000	1,250,000,000	770,000,000
Sales	(359,000,000)	(2,000,000)	(687,000,000)	(401,000,000)
Settlements	(256,000,000)	(195,000,000)	(702,000,000)	(542,000,000)
Transfers into level 3	0	0	0	0
Transfers (out of) level 3	0	0	0	0
Fair value, ending balance	4,419,000,000	6,433,000,000	4,419,000,000	6,433,000,000
Change in unrealized gains/(losses) related to financial instruments held	(447,000,000)	98,000,000	(1,572,000,000)	576,000,000
Other assets
Assets:
Fair value, beginning balance	861,000,000	1,225,000,000	927,000,000	1,265,000,000
Total realized/unrealized gains/(losses)	(56,000,000)	(160,000,000)	(152,000,000)	(210,000,000)
Purchases	19,000,000	2,000,000	170,000,000	49,000,000
Sales	(72,000,000)	0	(160,000,000)	(16,000,000)
Settlements	(6,000,000)	(7,000,000)	(33,000,000)	(28,000,000)
Transfers into level 3	0	3,000,000	1,000,000	4,000,000
Transfers (out of) level 3	0	0	(7,000,000)	(1,000,000)
Fair value, ending balance	746,000,000	1,063,000,000	746,000,000	1,063,000,000
Change in unrealized gains/(losses) related to financial instruments held	$ (56,000,000)	$ (160,000,000)	$ (145,000,000)	$ (217,000,000)