Fair Value Measurements (Fair Value Option Disclosures) (Details) - USD ($)
$ in Millions |
3 Months Ended |
9 Months Ended |
|
Sep. 30, 2016 |
Sep. 30, 2015 |
Sep. 30, 2016 |
Sep. 30, 2015 |
Dec. 31, 2015 |
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
| Assets, unpaid principal balance (UPB) |
$ 3,318
|
|
$ 3,318
|
|
$ 2,585
|
| Total assets at fair value |
3,432
|
|
3,432
|
|
2,652
|
| Assets, fair value over/(under) UPB |
114
|
|
114
|
|
67
|
| Litigation settlement |
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
| Litigation settlement payment amount |
|
|
118
|
|
|
| Additional payments | Litigation settlement |
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
| Litigation settlement payment amount |
|
|
118
|
|
|
| Nonperforming |
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
| Assets, unpaid principal balance (UPB) |
20
|
|
20
|
|
22
|
| Total assets at fair value |
14
|
|
14
|
|
10
|
| Assets, fair value over/(under) UPB |
(6)
|
|
(6)
|
|
(12)
|
| Performing |
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
| Assets, unpaid principal balance (UPB) |
3,298
|
|
3,298
|
|
2,563
|
| Total assets at fair value |
3,418
|
|
3,418
|
|
2,642
|
| Assets, fair value over/(under) UPB |
120
|
|
120
|
|
79
|
| Loans held-for-sale |
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
| Assets, unpaid principal balance (UPB) |
3,219
|
|
3,219
|
|
2,452
|
| Total assets at fair value |
3,352
|
|
3,352
|
|
2,541
|
| Assets, fair value over/(under) UPB |
133
|
|
133
|
|
89
|
| Loans held-for-sale | Nonperforming |
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
| Assets, unpaid principal balance (UPB) |
2
|
|
2
|
|
1
|
| Total assets at fair value |
2
|
|
2
|
|
0
|
| Assets, fair value over/(under) UPB |
0
|
|
0
|
|
(1)
|
| Loans held-for-sale | Performing |
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
| Assets, unpaid principal balance (UPB) |
3,217
|
|
3,217
|
|
2,451
|
| Total assets at fair value |
3,350
|
|
3,350
|
|
2,541
|
| Assets, fair value over/(under) UPB |
133
|
|
133
|
|
90
|
| Loans held-for-investment |
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
| Assets, unpaid principal balance (UPB) |
99
|
|
99
|
|
133
|
| Total assets at fair value |
80
|
|
80
|
|
111
|
| Assets, fair value over/(under) UPB |
(19)
|
|
(19)
|
|
(22)
|
| Loans held-for-investment | Nonperforming |
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
| Assets, unpaid principal balance (UPB) |
18
|
|
18
|
|
21
|
| Total assets at fair value |
12
|
|
12
|
|
10
|
| Assets, fair value over/(under) UPB |
(6)
|
|
(6)
|
|
(11)
|
| Loans held-for-investment | Performing |
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
| Assets, unpaid principal balance (UPB) |
81
|
|
81
|
|
112
|
| Total assets at fair value |
68
|
|
68
|
|
101
|
| Assets, fair value over/(under) UPB |
(13)
|
|
(13)
|
|
(11)
|
| Litigation settlement |
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
| Liabilities, unpaid principal balance |
(118)
|
|
(118)
|
|
(118)
|
| Liabilities, fair value |
(60)
|
|
(60)
|
|
(84)
|
| Liabilities, fair value over/(under) UPB |
58
|
|
58
|
|
$ 34
|
| Net gain on loan sales | Loans held-for-sale |
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
| Changes in fair value, gain (loss) |
151
|
$ 134
|
440
|
$ 276
|
|
| Other noninterest income (expense) | Loans held-for-investment |
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
| Changes in fair value, gain (loss) |
0
|
(1)
|
0
|
(35)
|
|
| Other noninterest income (expense) | Long-term debt |
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
| Changes in fair value, gain (loss) |
0
|
3
|
0
|
28
|
|
| Other noninterest income (expense) | Litigation settlement |
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
| Changes in fair value, gain (loss) |
0
|
0
|
0
|
(2)
|
|
| Interest income on loans | Loans held-for-investment |
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
| Changes in fair value, gain (loss) |
0
|
1
|
(2)
|
4
|
|
| Other noninterest income | Litigation settlement |
|
|
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
|
|
|
| Changes in fair value, gain (loss) |
$ 24
|
$ 0
|
$ 24
|
$ 2
|
|